CMMT-ST-C8-1C-...

-S0
Servo drive

Manual | Assembly,
Installation

8154442
2021-04b
[8154444]
Translation of the original instructions

AKULON®, BISS®, CiA®, EtherCAT®, EtherNet/IP®, PI PROFIBUS PROFINET®, PHOENIX CONTACT® are
registered trademarks of the respective trademark owners in certain countries.
Table of contents
1 About this document . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.1 Target group . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.2 Applicable documents. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.3 Product variants. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.4 Product labelling. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
1.5 Specified standards. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2 Safety. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.1 Safety instructions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.2 Intended use. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2.2.1 Range of application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2.2.2 Permissible components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2.3 Training of qualified personnel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2.4 CE marking. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2.5 Safety engineering approval . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2.6 UL/CSA certification. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
3 Additional information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
4 Product overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
4.1 Scope of delivery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
4.2 System structure. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
4.2.1 Product design . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
4.2.2 Overview of connection technology . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
5 Transport and storage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
6 Assembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
6.1 Mounting clearances. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
6.2 Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
7 Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
7.1 Safety. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
7.2 EMC-compliant installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
7.3 Connection example. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
7.4 Interfaces. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
7.4.1 [X1A], inputs and outputs for the higher-order PLC . . . . . . . . . . . . . . . . . . . . . . 23
7.4.2 [X1C], reference switch/limit switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
7.4.3 [X2], encoder interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
7.4.4 [X18], standard Ethernet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
7.4.5 [XF1 IN] and [XF2 OUT], real-time Ethernet (RTE) port 1 and 2 . . . . . . . . . . . . . 31
7.5 Motor connection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
7.6 Load and logic power supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
7.7 Cross-wiring of several servo drives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
8 Malfunctions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
8.1 Diagnostics via LED . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
8.1.1 Device status displays . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
8.1.2 Interface status [X18] . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
8.1.3 Device and interface status, EtherCAT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

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 8.1.4 Device and interface status, ProfiNet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
8.1.5 Device and interface status, EtherNet/IP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
9 Disassembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
10 Technical data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
10.1 Technical data, general . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
10.2 Technical data, electrical . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
10.2.1 Load and logic power supply [X9] . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
10.2.2 Power specifications, motor connection [X6] . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
10.2.3 Encoder interfaces [X2] . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
10.2.4 Digital inputs and outputs [X1A] . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
10.2.5 Reference switch [X1C] . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
10.2.6 Standard Ethernet [X18], parameterisation interface . . . . . . . . . . . . . . . . . . . . 55
10.2.7 Real-time Ethernet [XF1 IN], [XF2 OUT] . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
10.3 Characteristic curves. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
10.4 Technical data UL/CSA certification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56

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About this document

1 About this document

1.1 Target group
The document is targeted towards individuals who perform assembly, installation and service work on
the product.

1.2 Applicable documents

All available documents for the product è www.festo.com/sp.

The user documentation for the product also includes the following documents:
Identifier Table of contents

Operating instructions for the Installation, safety sub-function

product
Manuals for the product Detailed description of assembly, installation
Detailed description of safety sub-function
Manual/online help plug-in Plug-in:
– Functions and operation of the software
– Initial commissioning wizard
Firmware functions:
– Configuration and parameterisation
– Operating modes and operational functions
– Diagnostics and optimisation
Bus protocol/control:
– Device profile
– Controller and parameterisation
Festo Automation Suite online – Function of the Festo Automation Suite
help – Management and integration of device-specific plug-ins
Tab. 1: User documentation for the product

1.3 Product variants

The product is available in 3 fieldbus variants. The following order code indicates the equipment
features of the product variant.
Characteristic Order code Type

Servo drive CMMT- Servo drive, series T

Motor type ST- Stepper motor or EC motor
Nominal current C8- 8A
Nominal input voltage 1C- 24 … 48 V DC

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About this document

Characteristic Order code Type

Bus protocol/control EC- EtherCAT

EP- EtherNet/IP
PN- PROFINET
Safety function S0 Basic safety
Tab. 2: Product variants CMMT-ST-... (e.g. CMMT-ST-C8-1C-EC-S0)
This documentation refers to the following version:
– Servo drive CMMT-ST-...-S0, revision 1 and higher, see product labelling.
This is the first available revision.
• For later revisions of the product, check whether updated documentation is available è 3 Addi-
tional information.

1.4 Product labelling

• Observe the specifications on the product.
The product labelling is located on the right side of the device. The product labelling enables identifi-
cation of the product and shows the following information:
Product labelling (example) Meaning

CMMT-ST-C8-1C-EC-S0 Order code

8084005 MM-YYYY:XX SNM Rev 01SNW Part number, serial number (manufacturing
month, manufacturing year, plant number),
revision
Main input: 1x 24 … 48 V DC 8 A Technical data for the power supply (PELV fixed
power supply)
Motor out: 4x 0 … input V AC 0 … 20 kHz 8 ARMS Technical data for the motor output (output
300 W voltage, output frequency, nominal current,
nominal output power)
TAMB: max. 50 °C Ambient temperature (TAMB)
IP20 PD2 Degree of protection, pollution degree
MAC-ID: XF1 IN XX-XX-XX-XX-XX-XX First MAC address of the device for RTE com-
munication XF1 IN, also represented as a bar-
code
R-R-FTO-KC-2018-1092 KC mark certificate (test mark for Korea)
01/205/5696.00/19 TÜV certificate number
Data matrix code, 123456789AB Product key as a data matrix code and an 11-
character alphanumeric code
Festo SE & Co. KG Manufacturer

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Safety

Product labelling (example) Meaning

DE-73734 Esslingen Manufacturer’s address

Made in Germany Country of origin Germany
Tab. 3: Product labelling (example)
Warning symbol on the front of the product
The following warning symbol is applied to the front of the product (CMMT-ST-...-EC shown as
example):

1 Attention! Hot surface

Fig. 1: Warning symbol on the front of the

product
General meaning Meaning for the CMMT-ST

Attention! Hot surface Metallic housing parts of the device can reach high temperatures during
operation.
Tab. 4: Meaning of the warning symbol

1.5 Specified standards

Version

EN 60204-1:2018-09 EN 61800-3:2004+A1:2012
EN 61131-2:2007 EN 61800-5-2:2017
Tab. 5: Standards specified in the document

2 Safety
2.1 Safety instructions
General safety instructions
– Assembly and installation should only be carried out by qualified personnel.
– Only use the product if it is in perfect technical condition.
– Only use the product in original status without unauthorised modifications.

Festo — CMMT-ST-C8-1C-...-S0 — 2021-04b 7

Safety

– Do not carry out repairs on the product. If defective, replace the product immediately.
– Observe labelling on the product.
– This product can generate high frequency malfunctions, which may make it necessary to implement
interference suppression measures in residential areas.
– Take into consideration the ambient conditions at the location of use.
The safety function might fail and malfunctions might occur if you do not comply with the parame-
ters required for the ambient and connection conditions.
– Never remove or insert a plug when the power is switched on.
– Install the product in a suitable control cabinet. The minimum degree of protection required for the
control cabinet is IP54.
– Prior to commissioning, ensure that the resulting movements of the connected actuator technology
cannot endanger anyone.
– During commissioning: systematically check all control functions and the communication and signal
interface between controller and servo drive.
– Keep the documentation in a safe place throughout the entire product lifecycle.
If damage is caused by unauthorised manipulation or any use other than the intended use, the
guarantee will be invalidated and the manufacturer will not be liable for damages.
If damage is caused by using unauthorised software or firmware with the device, the warranty is
invalidated, and the manufacturer is not liable for damages.

Safety instructions for the safety sub-functions of the product è Manual Safety sub-function.

2.2 Intended use

The servo drive CMMT-ST is intended to supply power to and to regulate a stepper motor or an EC
motor. The integrated electronics permit regulation of torque (current), rotational speed and position.
Use exclusively:
– in perfect technical condition
– in its original condition, without unauthorised modifications
– within the limits of the product defined by the technical data è Technical data
– in an industrial environment

Intended use of the safety sub-functions for the product è Manual Safety sub-function.

2.2.1 Range of application

The device is intended for use in an industrial environment.
The device is intended to be installed in a control cabinet. The minimum degree of protection required
for the control cabinet is IP54.
2.2.2 Permissible components
Supported motors:
– Stepper motors
– EC motors

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Safety

The servo drive supports motors with or without an integrated holding brake (electrical spring-oper-
ated brake). The holding brake is actuated automatically by the controller enable of the servo drive.
The actuation concept is based on the assumption that a drive that is already stationary is being held.
The actuation system is not designed for decelerating a moving drive. If a moving drive is decelerated,
this can cause excessive wear on the brake.
Motor configuration Behaviour following removal of controller enable

Motor without holding brake The drive can move freely.

Motor with holding brake The holding brake is applied and holds the motor and axis in
position.
Tab. 6: Example: removal of controller enable
The holding brake must be designed for the load torque to be stopped. Detailed information about
brake control è Online help for the CMMT-ST plug-in.
Supported encoders:
– BiSS-C encoders
– Incremental encoders
Additional information è www.festo.com/catalogue.

2.3 Training of qualified personnel

The product may be installed and commissioned only by a qualified electrical engineer who is familiar
with:
– The installation, operation and maintenance of electrical control systems
– The applicable regulations for operating safety-related systems
Work on safety-related systems may only be carried out by qualified personnel trained in safety
engineering.

2.4 CE marking
The product has the CE marking.
The product-related EU directives and standards are listed in the declaration of conformity
è www.festo.com/sp.

2.5 Safety engineering approval

The product is a safety device in accordance with the EC Machinery Directive. For details of the
safety-oriented standards and test values that the product complies with and fulfils, see è Manual
Safety sub-function, Technical data, safety engineering. Please note that compliance with the listed
standards is limited to the CMMT-ST-...-S0.

2.6 UL/CSA certification

Technical data and environmental conditions may be subject to change in order to comply with
Underwriters Laboratories Inc. (UL) certification requirements for the USA and Canada.
Deviating values è 10.4 Technical data UL/CSA certification.

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Product overview

3 Additional information
– Contact the regional Festo contact if you have technical problems è www.festo.com.
– Accessories and spare parts è www.festo.com/catalogue.

Firmware, software or configuration files è www.festo.com/sp.

4 Product overview
4.1 Scope of delivery
Component Number

Servo drive CMMT-ST-... 1

Assortment of plugs NEKM-C-22 1
H-rail clamp (premounted) 1
Operating instructions CMMT-ST-... 1
Tab. 7: Scope of delivery
Below are some examples of the available accessories:
– Patch cable for linkage of the RTE interface

Up-to-date information on the accessories è www.festo.com/catalogue.

4.2 System structure

The servo drive CMMT-ST is a 1-axis servo drive for controlling a stepper motor or an EC motor with
connected mechanisms, e.g. a Festo axis. The device is controlled by a higher-level controller using
the bus protocol EtherCAT, EtherNet/IP or PROFINET, depending on the product version, via a real-time
Ethernet interface.
The device can be parameterised via a PC using either the real-time Ethernet interface or the separate
standard Ethernet interface.
The device is an extra-low-voltage controller. The load and logic power supply must be provided by a
PELV fixed power supply.

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Product overview

Fig. 2: System structure (example)

1 Servo drive CMMT-ST 4 PC with Ethernet connection for parameteri-

2 Stepper motor or EC motor with drive sation
5 Bus/network
3 Fixed power supply (or supplies) for logic
and load voltage (PELV)

4.2.1 Product design

The device has a compact design. The connections are on the front, top and bottom of the device as
pin header, socket strip or RJ45 bushing.
The ventilation slots on the bottom, top and left side of the device ensure sufficient air flow for cooling
the device.
The metal housing parts form the cooling elements. Heat is also dissipated to the surroundings via the
cooling elements. The device does not have a fan.

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Product overview

3
Fig. 3: Servo drive CMMT-ST

1 Top 4 Cooling element (metal housing parts, top,

2 Front side bottom left side and back of housing)
5 Ventilation slots
3 Bottom

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Product overview

Fig. 4: Elements on the back

1 top hole for wall mounting 4 bottom slot for wall mounting
2 Retaining screw for t-rail clamp 5 Hood (right side of housing)
3 T-rail clamp

There is a hole at the back on top and a slot for wall mounting at the bottom. The t-rail clamp is
mounted in the centre of the back.

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Product overview

1 2

Fig. 5: Bottom

1 Ventilation slots 2 Bottom of the CMMT-ST

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Transport and storage

4.2.2 Overview of connection technology

2
3
1
4

10

Fig. 6: Connections of the CMMT-ST (example CMMT-ST-C8-1C-EC)

1 Functional earth marking 7 [X2] Encoder connection

2 Functional earth connection 8 [X6] Motor connection
3 [XF2 OUT] RTE interface port 2 9 [X1C] Connection for the reference switch or
4 [XF1 IN] RTE interface port 1 limit switch
10 [X9] Load and logic voltage (underneath)
5 [X18] Standard Ethernet
6 [X1A] I/O interface

5 Transport and storage

– Protect the product during transport and storage from excessive stress factors. Excessive stress
factors include:
– Mechanical stresses
– Impermissible temperatures

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Assembly

– Moisture
– Aggressive atmospheres
– Store and transport the product in its original packaging or installed in the control cabinet. The
original packaging offers sufficient protection from typical stresses.

6 Assembly
Dimensions

Fig. 7: Dimensions [mm]

6.1 Mounting clearances

The series CMMT-ST servo drives can be connected in series.
With effective output currents > 4.5 A mounting clearances may be required on both sides to allow
dissipation of the heat generated during operation by allowing sufficient air flow.

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Assembly

Detailed information about the required mounting clearances and any derating that may be necessary
as a function of the ambient temperature è Fig. 15
The table below shows the mounting clearances for standard output currents and ambient tempera-
tures.
Examples Ambient operating temperature
30 °C 40 °C 50 °C

Continuous, constant Mounting clearances

output current in con-
trolled operation [A]
4 0 mm 0 mm 0 mm
5 3 mm
6 10 mm
7 3 mm impermissible
8 15 mm
Tab. 8: Required mounting clearances (examples)
In order for the device to reach its specified service life, the maximum housing interior temperature
must be restricted. The specified derating serves to restrict the housing interior temperature.
The necessary clearances are determined by the temperature in the control cabinet and the required
effective current. The Festo PositioningDrives software can be used to calculate the effective current.
If the clearances are insufficient, the device will be switched off by the I²t or temperature monitoring
function of the power stage. The maximum device current can be parameterised in the plug-in regard-
less of the nominal current of the connected motor è online help for the CMMT-ST plug-in.
In the cases below, the required effective current that will cause the device to heat up is lower than
the nominal current of the device:
– In closed-loop operation
– In open-loop operation, if the device is running in intermittent duty

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Assembly

Fig. 8: Effective current timing graph (example)

Name Description

Ieff Effective current

Iset Set current
IH Holding current
positioning motion Traversing movement
example open-loop operation Example of open-loop operation
example closed-loop operation Example of closed-loop operation
Tab. 9: Legend for effective current timing graph

6.2 Installation
The servo drive is intended to be installed in a control cabinet with at least IP54 degree of protection.
The servo drive can be screwed onto the backwall of the control cabinet or mounted on an H-rail.

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Assembly

Assembly instructions
– Always install the device vertically in the control cabinet (mains supply line [X9] underneath).
– Maintain minimum distances and mounting clearance to guarantee sufficient air flow. The ambient
air in the control cabinet must be able to flow through the device from bottom to top without
hindrance. Detailed information about the required mounting clearances and any power reduction
that may be necessary as a function of the ambient temperature è Fig. 15.
– Take into account the required clearance for the wiring (connecting cables of the device must be
routed from above, from below and from the front).
– Do not mount any temperature-sensitive components near the device. The device can become very
hot during operation (switch-off temperature of the temperature monitoring function è Technical
data).
– When mounting on an H-rail: use a DIN mounting rail TH 35-7.5 or TH 35-15 in accordance with
EN 60715.
– When mounting on the backwall of the control cabinet: screw the device on vertically and flat to the
mounting surface.
Mounting the H-rail clamp
• If the H-rail clamp is not premounted, screw it on using the original screw on the back è Fig. 4.
Mounting on an H-rail
1. Attach the device by hooking the top of the H-rail clamp onto the H-rail from above.
2. Press the lower part of the device onto the H-rail until the H-rail clamp clicks into place on the
H-rail.

Fig. 9: Mounting on an H-rail

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Installation

Wall mounting
The backwall of the device has a hole at the top and a cutout at the bottom. The device is screwed
vertically and flat to the mounting surface using the hole and the cutout.
1. If an H-rail clamp is mounted on the back, remove it.
2. Mount the servo drive on the backwall of the control cabinet with suitable screws while complying
with the assembly instructions.

7 Installation
7.1 Safety
WARNING
Danger of burns from hot housing surfaces.
Metallic housing parts can reach high temperatures during operation.
Contact with metal housing parts can cause burn injuries.
• Do not touch metallic housing parts.
• After the power supply is switched off, let the device cool down to room temperature.

7.2 EMC-compliant installation

A non-EMC-compliant installation can lead to signal interference on the encoder, motor or communica-
tion cables.

Cable lengths and cable shield

– Only use suitable cables that fulfil the requirements of standard EN 60204-1.
– Comply with maximum permissible cable lengths.
Connection Max. cable length [m] Cable shield

[X1A] Inputs/outputs for the higher- 25 Not required

order PLC
[X1C] Inputs/outputs for the refer- 25
ence/limit switches
[X2] Encoder 251) Not required but twisted in
pairs2)
[X6] Motor phase connection 25 Not required but twisted in
pairs2)
[X9] Logic power supply and load 30 Not required
voltage supply
[X18] Standard Ethernet 30 Double shielded (CAT 5)
[XF1 IN] RTE (port 1)
[XF2 OUT] RTE (port 2)
1) Adhere to the maximum permissible cable length for the encoder used.
2) Shielded cables from Festo can be used. The shield can only be connected on the motor side.
Tab. 10: Cable lengths and cable shield

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Installation

Laying cables
Comply with general guidelines for EMC-compliant installation, e.g.:
– Do not run signal cables parallel to power cables.
– Comply with required minimum distances between signal cables and power cables dependent on
the installation conditions. Signal cables must be physically separated from the power cables to the
maximum possible extent.
– Wherever possible, avoid crossing signal cables with power cables or running them at only a 90°
angle in relation to one another.
The encoder cable is e.g. a signal line and the motor cable is a power cable. These lines must therefore
be installed separately.

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Installation

7.3 Connection example

Fig. 10: Connection example

1 BiSS-C or incremental encoder 4 PELV fixed power supply for load voltage
2 EC motor or stepper motor supply (24 V … 48 V)

3 PELV fixed power supply for logic voltage

(24 V)

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Installation

7.4 Interfaces
7.4.1 [X1A], inputs and outputs for the higher-order PLC
The I/O interface [X1A] is located on the front of the device. This interface features:
– 2 freely configurable digital outputs (parameterisable switching logic, PNP logic or NPN logic)
– 2 freely configurable digital inputs (parameterisable switching logic, PNP logic or NPN logic)
– 1 digital input for the power stage enable and reset error functions; whether or not the function
will be used can be parameterised in the plug-in (parameterisable switching logic, PNP logic or NPN
logic)
– 2 inputs for the circuitry of the safety sub-function STO (#STO-A, #STO-B)
– 2 contacts for the circuitry of the diagnostic contact of the safety sub-function STO (STA-C1, STA-C2)
Detailed information on the circuitry of the product safety sub-functions can be found in the
è Manual Safety sub-function è 1.2 Applicable documents.
The functional inputs and outputs of this I/O interface are used for coupling to a higher-order PLC,
for example. The devices connected to the CMMT-ST all need to have the same switching logic (PNP/
NPN). The configuration
PNP and NPN logic
– PNP logic means that a potential is switched.
– NPN logic means that earth is switched.
The required switching logic can be parameterised using the CMMT-ST plug-in è online help for the
CMMT-ST plug-in.
Signal Level Input Outlet

logic 0 0V internal via pull-down resistor internal via pull-down resistor

logic 1 24 V – via high-side driver (delivers cur-
rent)
Tab. 11: PNP logic

Signal Level Input Outlet

logic 0 24 V internal via pull-up resistor internal via pull-up resistor

logic 1 0V – via low-side driver (consumes cur-
rent)
Tab. 12: NPN logic

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Installation

Connection examples

Fig. 11: Connection example, PNP logic

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Installation

Fig. 12: Connection example, NPN logic

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Installation

[X1A] Pin Function Description Mating plug

labelling

1 + 24 V, + 24 V DC output (fused) 1
out
2 #STO-A Control input Safe torque off, STO-A
channel A
3 #STO-B Control input Safe torque off, STO-B
channel B
4 STA-C1 Diagnostic contact STA Safe STA
5 STA-C2 torque off acknowledge

6 CTRL-EN Power stage enable/acknowledge 6

error
7 Basic in configurable input 7
01
8 Basic in configurable input 8
02
9 Basic out configurable output 9
01
10 Basic out configurable output 10
02
Tab. 13: Inputs and outputs for the higher-order PLC
The inputs and outputs are configured using the CMMT-ST plug-in è online help for the CMMT-ST
plug-in.
The signals of inputs STO-A/B are low active, so they are marked with #.
Mating plug requirements

Identifier based on Phoenix Contact DFMC 1.5/5-ST-3.5

included in assortment of plugs NEKM-C-22
(enclosed with the product)
Signal contacts 10 (10-pin, 2-row)
Nominal current 8A
Pitch 3.5 mm
Strip length 10 mm
UL Use Group D
Tab. 14: Mating plug requirements

Requirements for the connecting cable

Shielding not required

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Installation

Requirements for the connecting cable

Min. conductor cross section incl. wire end sleeve with plastic 0.2 mm2
sleeve1)
Max. conductor cross section incl. plastic wire end sleeve 1.5 mm2
Max. length 25 m
1) The conductor cross section used must be suitable for the expected currents. If flexible flying leads are used with plastic wire end
sleeves, minimum cross sections of 0.14 mm² are possible.
Tab. 15: Requirements for the connecting cable

7.4.2 [X1C], reference switch/limit switch

The connection [X1C] is located on the front of the device and is used to connect the reference switch
or a limit switch. The switching logic of the input can be parameterised (PNP logic or NPN logic).
[X1C] Pin Function Description Mating plug
labelling

1 +24 V, out + 24 V DC output (fused) +

2 REF/IN Reference signal/limit switch IN
signal
3 0 V/GND Reference potential, reference -
switch

Tab. 16: Connection for the reference switch/limit switch

Mating plug requirements

Identifier based on Phoenix Contact FK-MCP 1.5/3-ST-3.5

included in assortment of plugs NEKM-C-22
(enclosed with the product)
Signal contacts 3
Nominal current 8A
Pitch 3.5 mm
Strip length 9 mm
UL Use Group D
Tab. 17: Mating plug requirements

Cable requirements

Shielding not required

Min. conductor cross section incl. wire end sleeve with plastic 0.14 mm2
sleeve1)

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Installation

Cable requirements

Max. conductor cross section incl. plastic wire end sleeve 1.5 mm2
Max. length 25 m
1) The conductor cross section used must be suitable for the expected currents.
Tab. 18: Cable requirements

7.4.3 [X2], encoder interface

The encoder interface [X2] is located on the front side of the device. Communication with the encoder
is performed via this interface. The encoder signals are received, and the encoder is supplied with
voltage.
The following encoders are supported:
– Incremental encoders with AB signals (quadrature encoder)
– Absolute encoders with BiSS C protocol
[X2] Pin Function Description Mating plug
labelling

1 A_IN A signal input 1

2 B_IN B signal input 2
3 IDX_IN Index signal input 3
4 +5 V 5 V encoder supply 4
5 #A_IN A signal input, inverse 5
6 #B_IN B signal input, inverse 6
7 #IDX_IN Index signal input, inverse 7
8 GND Reference potential of encoder 8
supply
Tab. 19: Incremental encoders with AB signals (quadrature encoder)

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Installation

[X2] Pin Function Description Mating plug

labelling

1 – – 1
2 MA+ Clock line BiSS C, output 2
3 SLO+ Data transmission line BiSS C, 3
input
4 +5 V 5 V encoder supply 4
5 – – 5
6 MA– Clock line BiSS C, output inverse 6
7 SLO– Data transmission line BiSS C, 7
input inverse
8 GND Reference potential of encoder 8
supply
Tab. 20: Absolute encoders with BiSS C protocol

Mating plug requirements

Identifier based on Phoenix Contact DFMC 1.5/4-ST-3.5

included in assortment of plugs NEKM-C-22
(enclosed with the product)
Number of pins 8
Nominal current 8A
Pitch 3.5 mm
Strip length 10 mm
UL Use Group D
Tab. 21: Mating plug requirements

Requirements for the connecting cable

Shielding Not required but twisted in pairs1)

Min. cable cross section2) 0.2 mm2
Max. conductor cross section 1.5 mm2
Max. length 25 m
1) Festo screened cables can be used. The shield can only be connected on the motor side.
2) The conductor cross section used must be suitable for the expected currents. If flexible flying leads are used with plastic wire end
sleeves, minimum cross sections of 0.14 mm² are possible.
Tab. 22: Requirements for the connecting cable

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Installation

7.4.4 [X18], standard Ethernet

The interface [X18] is located on the front of the device. The following can be performed via the
interface [X18] using the commissioning software:
– Diagnostics
– Parameterisation
– Controller
– firmware update
The interface fulfils the requirements of standard IEEE 802.3:2012. The interface is galvanically
isolated and intended for use with limited cable lengths.
The connection [X18] is designed as an RJ45 bushing. 2 LEDs are integrated into the RJ45 bushing. The
green LED lights up if the interface is activated. The yellow LED flashes when communication activity is
detected.
Standard Ethernet
[X18] Pin Function Description

1 TX+ Transmitted data+

2 TX- Transmitted data-
3 RX+ Received data+
4 n. c. not connected
5 n. c.
6 RX- Received data-
7 n. c. not connected
8 n. c.
Hou FE The housing is used as a support for the cable shield and is
sing connected to the FE.
Tab. 23: Standard Ethernet

Mating plug requirements

Design VS-08-RJ45-5-Q/IP20 from Phoenix Contact or

compatible
Number of pins 8
Shielded Yes
Degree of protection IP20
Tab. 24: Mating plug requirements

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Installation

Requirements for the connecting cable

Characteristics CAT 5, patch cable, double shielded

Max. cable length 30 m
Tab. 25: Requirements for the connecting cable
The following connections are possible via the Ethernet interface:
Connections Description

Point-to-point connection The device is connected directly to the PC via an

Ethernet cable.
Network connection The device is connected to an Ethernet network.
Tab. 26: Options for connection
The device supports the following methods of IP configuration (based on IPv4):
Methods Description

Obtain IP address automatically (DHCP client) The device obtains its IP configuration from a
DHCP server in the network. This method is suit-
able for networks in which a DHCP server already
exists.
Fixed IP configuration The device uses a fixed IP configuration.
The IP configuration of the device can be perma-
nently assigned manually. However, the device
can only be addressed if the assigned IP configu-
ration matches the IP configuration of the PC.
Factory setting: 192.168.0.1
Tab. 27: Options for IP configuration
Shield support requirements
• Connect the cable shield to the plug housings on both sides.
Possible connections
• Connect CMMT to your network via a hub/switch or directly to the PC.
7.4.5 [XF1 IN] and [XF2 OUT], real-time Ethernet (RTE) port 1 and 2
The real-time Ethernet interface [XF1 IN] and [XF2 OUT] is located on the top of the device. The inter-
face permits RTE communication. The following protocols are supported, depending on the product
version:
Product variant Supported protocol

CMMT-ST-...-EC EtherCAT
CMMT-ST-...-EP EtherNet/IP
CMMT-ST-...-PN PROFINET
Tab. 28: Supported protocol

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Installation

The physical level of the interface fulfils the requirements according to IEEE 802.3:2012-00. The
interface is galvanically isolated and intended for use with limited cable lengths.
2 LEDs are integrated into the RJ45 bushings. The behaviour of the LEDs depends on the bus protocol.
Both LEDs are not always used.
Real-time Ethernet (RTE) port 1 and port 2
[XF2 OUT] and Pin Function Description
[XF1 IN]

1 TX+ Transmitted data+

2 TX- Transmitted data-
3 RX+ Received data+
4 n. c. not connected
5 n. c.
6 RX- Received data-
7 n. c. not connected
8 n. c.
Hou FE The housing is used as a support for the cable shield and is
sing connected to the FE.
Tab. 29: [XF1 IN] and [XF2 OUT], RTE port 1 and 2

Mating plug requirements

Design VS-08-RJ45-5-Q/IP20 from Phoenix Contact or

compatible
Number of pins 8
Shielded Yes
Degree of protection IP20
Tab. 30: Mating plug requirements

Requirements for the connecting cable

Characteristics CAT 5, patch cable, double shielded

Max. cable length 30 m
Tab. 31: Requirements for the connecting cable
Shield support requirements
• Connect the cable shield to the plug housings on both sides.

7.5 Motor connection

The connection [X6] is located on the front of the device. The following functions are carried out via the
connection [X6]:

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Installation

– Supply motor coils with current

– Actuate optional holding brake of the motor
As a rule, the brakes used are holding brakes. This means the brakes are well suited to keeping the
motor at a standstill. The holding brake must be designed for the load torque to be stopped. Holding
brakes are not usually suitable for braking moving masses or loads.
• Check that the holding brake used is suitable for the application.
The servo drive controls the output for the holding brake automatically. Information about brake
control è Online help for the CMMT-ST plug-in.
Pin allocation for connecting a stepper motor:
[X6] Pin Function Description Mating plug
labelling

1 A String A A
2 A/ String A/ A/
3 B String B B
4 B/ String B/ B/
5 Br+ Brake +24 V Br+
6 Br-/0 V Brake 0 V Br-

Tab. 32: Motor phase connection for connecting a stepper motor

Pin allocation for connecting an EC motor:
[X6] Pin Function Description Mating plug
labelling

1 U Phase U A
2 V Phase V A/
3 W Phase W B
4 reserved do not connect B/
5 Br+ Brake +24 V Br+
6 Br-/0 V Brake 0 V Br-

Tab. 33: Motor phase connection for connecting an EC motor

Mating plug requirements

Identifier Based on Phoenix Contact FKC 2.5/6-ST-5.08

included in assortment of plugs NEKM-C-22
(enclosed with the product)

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Installation

Mating plug requirements

Signal contacts 6
Nominal current CE: 12 A
cUL: 10 A1)
Pitch 5.08 mm
Strip length 10 mm
UL Use Group D
1) Only 10 A is permitted for the cUL approval.
Tab. 34: Mating plug requirements

Requirements for the connecting cable

Shielding Not required but twisted in pairs1)

Min. cable cross section2) incl. wire end sleeve 0.2 mm2
with plastic sleeve
Max. conductor cross section without wire end 2.5 mm2
sleeve
Max. length 25 m
1) Festo screened cables can be used. The shield can only be connected on the motor side.
2) The conductor cross section used must be suitable for the expected currents.
Tab. 35: Requirements for the connecting cable
Festo offers prefabricated motor cables as accessories è www.festo.com/catalogue.

7.6 Load and logic power supply

The connection [X9] is located underneath the device.
The control unit and power unit of the device are supplied with electrical power separately via the
connection [X9].
– Supply of the control unit with 24 V DC (logic power supply)
– Supply of the power unit with 24 V DC to 48 V DC (load voltage supply)
The load and logic power supply features internal overcurrent protection. The internal overcurrent
protection device cannot be reset!
Power supply

WARNING
Risk of injury due to electric shock.
• For the electrical power supply with extra-low voltages, use only PELV circuits that guarantee a
reinforced isolation from the mains network.
• Observe IEC 60204-1/EN 60204-1.

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Installation

Power supply

[X9] Pin Function Description Mating plug

labelling

1 + 48 V Power supply for the load circuit 48 V

24 V DC to 48 V DC
2 0V Reference potential for the load 0V
and logic voltage
3 +24 V Power supply for the logic circuit 24 V
24 V DC

Tab. 36: Power supply

Mating plug requirements

Identifier Based on Phoenix Contact FKC 2.5/3-ST-5.08

included in assortment of plugs NEKM-C-22
(enclosed with the product)
Signal contacts 3
Nominal current CE: 12 A
cUL: 10 A1)
Pitch 5.08 mm
Strip length 10 mm
UL Use Group D
1) Only 10 A is permitted for the cUL approval.
Tab. 37: Mating plug requirements

Requirements for the connecting cable

Shielding not required

Min. cable cross section1) incl. wire end sleeve with plastic sleeve 0.2 mm2
Max. conductor cross section incl. plastic wire end sleeve 2.5 mm2
Max. length 30 m
1) The conductor cross section used must be suitable for the expected currents.
Tab. 38: Requirements for the connecting cable

7.7 Cross-wiring of several servo drives

Cross-wiring enables a device compound to be created.

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Malfunctions

• When cross-wiring configurable inputs/outputs, observe the current rating of the cables and the
mating plugs.
Whether cross-wiring of the diagnostic contact is permissible depends on the required safety classifi-
cation.
The diagnostic contact must be evaluated separately for EC motors with the classification SIL 3, cat.
3, PL e. It is not permissible to cross-wire the diagnostic contact. In all other cases, the following rules
apply when cross-wiring several servo drives:
– Wire inputs #STO-A and #STO-B in parallel in each case.
– Wire diagnostic contacts STA-C1/C2 in series in each case.
– Wire the diagnostic contacts of a maximum of 10 servo drives in series. The maximum cable length
applies to the entire line, from the safety relay unit to the final device.

Example of cross-wiring è Manual Safety sub-function.

Mixed cross-wiring of diagnostic contacts and diagnostic outputs is not recommended.

The connections for the load and logic power supply can be cross-wired to create a device compound.
Twin wire end sleeves or double mating plugs can be used for cross-wiring.
According to the mating plug data sheet, conductor cross sections of maximum 2x 1 mm² per contact
are possible using twin wire end sleeves. With the double mating plug TFKC 2.5/3-ST-5.08 from
Phoenix Contact, conductor cross sections of maximum 2x 1.5 mm² per contact are possible.
Cross-wiring Twin wire end sleeve Double mating plug
TFKC 2.5/3-ST-5.08

Max. conductor cross section 1 mm² 1.5 mm²

per cable (2)
Max. permissible current with 19 A 24 A, according to mating plug
heat-resistant cable data sheet max. 10 A for cUL
Tab. 39: Max. permissible current
Recommendation:
– Insert a suitable fuse for line protection. The rated current of the fuse must be less than or equal to
the permissible current rating of the selected conductor cross section.
– The number of devices that can be cross-wired depends on the current consumption of the devices.

8 Malfunctions
8.1 Diagnostics via LED
The device has LEDs for displaying status information on the top and in the RJ45 bushings [XF1 IN],
[XF2 OUT] and [X18].
The following image shows an example of the LEDs on the front of product variant CMMT-ST-...-EC. The
functions of the RTE network status LEDs 2 differ by product version.

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Malfunctions

1 Device status LEDs (4x)

2 RTE network status LEDs (example)
3 Ethernet status LEDs

Fig. 13: LEDs on the front

8.1.1 Device status displays

LED Designation Brief description

Status LED Indicates the general device status

Power LED Indicates the status of the power supply
Safety LED Indicates the status of the safety equipment
Application status LED Indicates the identification sequence and is
reserved for future extensions
Tab. 40: Device status LEDs (status, power, safety and application status LEDs)
LED test
After the device is switched on, it runs through an initialisation phase. When the initialisation phase is
complete, the device performs an LED test. During the LED test, the 4 device status LEDs are activated
simultaneously. The 4 device status LEDs light up yellow for approx. 300 ms.

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Malfunctions

Status LED, display of the device status

LED Meaning

Flashe An error is present.

s red
Flashe A warning is present, or the servo drive is currently performing a firmware update.
s
yellow
Illumi- The servo drive is in the initialisation phase.
nated
yellow
Flashe The servo drive is ready, and the power stage is switched off (Ready).
s
green
Illumi- The power stage and the closed-loop controller are enabled.
nated
green
Tab. 41: Status LED
Power LED, status of the power supply

LED Meaning

yellow The logic power supply is present, but the load voltage supply is not present or is
light currently being measured.
green The load voltage supply and the logic power supply are present.
light
Tab. 42: Power LED
Safety LED, functional status of the safety engineering
Malfunctions of the safety sub-function are detected and displayed in the functional device. The
following are detected:
– Safety sub-function STO requested via 1 channel (discrepancy monitoring)
– Plausibility check of STO channel switch-off
Malfunctions are externally reported by the functional part, including via the additional communica-
tion interfaces (bus, commissioning software).
LED Meaning

Flashe Error in the safety part, or a safety condition has been violated.
s red

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Malfunctions

LED Meaning

Illumi- The safety sub-function has been requested and is active.

nated
yellow
Illumi- Ready, no safety sub-function has been requested.
nated
green
Tab. 43: Safety LED
Application status

LED Meaning

Flashe Identification sequence active (for optical identification of the device in a network),
s which can be activated via the parameterisation software
alter-
nately
betwe
en
red,
yellow
and
green
Flashe Reserved for future extensions
s
yellow
Lights
up
yellow
Flashe
s
green
Lights
up
green
Tab. 44: Application status LED
Special function of the start program (bootloader) during firmware updates
When the bootloader starts the update procedure, the status LED flashes yellow at half-second
intervals. The power LED, safety LED and application status LED remain dark.
If an error occurs during a firmware update, the status LED flashes red at one-second intervals. The
frequency of flashing corresponds to the error number specified in the following table. After flashing,
there is a pause of 3 s. Then the procedure repeats.

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Malfunctions

Error number Description

1 The start program has detected a CRC error in the firmware after switching on.
2 The start program has detected a CRC error in the start program after switching on.
3 The start program is supposed to update the firmware but has detected an error in
the system update file.
4 The start program is supposed to update itself and the firmware but has detected a
defective start program in the system update file.
5 The start program cannot access the file system or the system update file, or the
system update file is defective.
Tab. 45: Error messages of the start program (bootloader)

8.1.2 Interface status [X18]

LEDs at [X18]; connection status of the Ethernet interface

LED Meaning (upper LED)

Off Interface is deactivated.

Lights Interface is activated.

up
green
Tab. 46: Upper LED at [X18]

LED Meaning (lower LED)

Off No communication activity

Flashe Communication activity detected.

s
yellow
Tab. 47: Lower LED at [X18]

8.1.3 Device and interface status, EtherCAT

EtherCAT LED displays (CMMT-ST-...-EC only)
Together with the 2 LEDs on the top, the Run LED and the Error LED on the front display the bus/
network status.
EtherCAT, Run LED; operating status

LED Meaning Remedy

Off The device is in the Init status (initialisa- –

tion).

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Malfunctions

LED Meaning Remedy

Flashe The device is in the pre-operational –

s status.
green
Flashe The device is in the safe-operational –
s status.
green1
)

Lights The device is in the operational status –

up (normal operating status).
green
1) Single flash: single short flashing (1x flash, pause, 1x flash, etc.)
Tab. 48: Run LED
EtherCAT, error LED; error status

LED Meaning Remedy

Off No error –

Flashe Invalid configuration, general configura- Eliminate configuration error.

s red tion error, a status change specified by
the master is not possible.
Flashe Local error, the slave device applica- –
s red1) tion has independently changed the
EtherCAT status. This can have the fol-
lowing causes:
– A host watchdog time-out has
occurred.
– Synchronisation error, the device
switches automatically to the safe-
operational status.
Flashe A process data watchdog time-out has –
s red2) occurred.
1) Single flash: single short flashing (1x flash, pause, 1x flash, etc.)
2) Double flash: double short flash (2x flash, pause, 2x flash, etc.)
Tab. 49: Error LED
EtherCAT, LINK/ACTIVITY LED; connection status at XF1 IN and XF2 OUT

LED Meaning Remedy

Off No network connection Check network connection.

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Malfunctions

LED Meaning Remedy

Flicker Data traffic activity (traffic). –

s
green
(appro
x.
10 Hz)
Lights Network connection is OK (link). –
up
green
Tab. 50: LED at XF1 IN and XF2 OUT

8.1.4 Device and interface status, ProfiNet

PROFINET LED displays (CMMT-ST-...-PN only)
Together with the 4 LEDs on the top, the NF LED on the front displays the bus/network status.
PROFINET, NF LED; bus error

LED Meaning Remedy

Off No error –

Flashe Network error Check network configuration and net-

s red – No data transmission work connection.
(2 Hz) – No configuration
– No network connection or network
connection is malfunctioning
Tab. 51: NF LED
PROFINET, LEDs at XF1 IN and XF2 OUT; connection status, data traffic

LED Meaning of the green LED Remedy

Off No network connection Check network connection.

Lights Network connection is OK (link). –

up
green
Tab. 52: Green LED at XF1 IN and XF2 OUT

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Malfunctions

LED Meaning of the yellow LED Remedy

Off No data traffic –

Flashe Data traffic activity (traffic). –

s/
lights
up
yellow
1)

1) The LED flashes during the transmission of an Ethernet packet. If packets are constantly being transmitted, the flashing changes to a
steady light.
Tab. 53: Yellow LED at XF1 IN and XF2 OUT

8.1.5 Device and interface status, EtherNet/IP

EtherNet/IP LED displays (CMMT-ST-...-EP only)
Together with the 4 LEDs on the top (Link/Activity), the MS LED and NS LED on the front display the
bus/network status.
EtherNet/IP, MS LED; module status

LED Meaning Remedy

Off Logic voltage supply lacking. Check logic voltage supply.

Flashe Device is not configured. Perform configuration.

s
green
Lights Normal operating status –
up
green
Flashe Device performs a self-test. –
s red/
green
Flashe Rectifiable error, possibly a configura- Check configuration.
s red tion error
Lights Error cannot be rectified Contact Festo Service è www.festo.com.
up red
Tab. 54: MS LED
EtherNet/IP, NS LED; network status

LED Meaning Remedy

Off The device is switched off or has no IP Switch on device or check IP address.
address.

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Malfunctions

LED Meaning Remedy

Flashe The device has an IP address but no CIP Eliminate configuration error.
s connection.
green It may be that the device is not assigned
to a master/scanner.
Lights Normal operating status. –
up The device is online and has a CIP con-
green nection.
Flashe Device performs a self-test. –
s red/
green
Flashe One or more I/O connections are in the Check the physical connection to the
s red time-out status. master/scanner.
Lights The IP address of the device has already Check and correct IP addresses in the
up red been assigned. network.
Tab. 55: NS LED
EtherNet/IP, LED at XF1 IN and XF2 OUT; connection status, data traffic

LED Meaning of the green LED Remedy

Off No network connection Check network connection.

Lights Network connection is OK (link). –

up
green
Tab. 56: Green LED at XF1 IN and XF2 OUT

LED Meaning of the yellow LED Remedy

Off No data traffic –

Flicker Data traffic activity. –

s
yellow
Tab. 57: Yellow LED at XF1 IN and XF2 OUT

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Technical data

9 Disassembly
WARNING
Danger of burns from hot housing surfaces.
Metallic housing parts can reach high temperatures during operation.
Contact with metal housing parts can cause burn injuries.
• Do not touch metallic housing parts.
• After the power supply is switched off, let the device cool down to room temperature.

Disassemble in reverse order of installation.

Before disassembly
1. Switch off the power supply at the main switch.
2. Secure the system against accidental reactivation.
3. Allow the device cool down to room temperature.
4. Disconnect all electrical cables.
Disassembly for wall mounting
• Loosen retaining screws (2x) and remove the device from the mounting surface.
Disassembly for H-rail mounting
• Carefully tilt the servo drive upwards and remove it from the H-rail.

Fig. 14: Disassembly from the H-rail

10 Technical data

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Technical data

10.1 Technical data, general

Product conformity

CE marking (declaration of con- in accordance with EU EMC Directive1)

formity è www.festo.com/sp) In accordance with EU Machinery Directive
in accordance with EU RoHS Directive
1) The component is intended for operation in the industrial sector.
Tab. 58: Product conformity

General technical data

Type ID code CMMT-ST

Type of mounting Mounting plate, attached with screws
H-rail mounting
Mounting position vertical, free convection with unhindered air flow from bottom to
top
Dimensions (H*W*D) è 6 Assembly
Product weight [kg] Approx. 0.35
Displays – Device status display: 4 LEDs
– Bus-specific status:
– CMMT-ST-...-EC: 2 LEDs (Run, Error)
– CMMT-ST-...-EP: 2 LEDs (MS, NS)
– CMMT-ST-...-PN: 1 LED (NF)
– RTE network status LEDs [X1F IN], [X1F OUT]:
– CMMT-ST-...-EC: 2 LEDs
– CMMT-ST-...-EP: 4 LEDs
– CMMT-ST-...-PN: 4 LEDs
– Ethernet status LEDs [X18]: 2 LEDs
Parameterisation interface – [X18], Ethernet; parameterisation and configuration via com-
missioning software
– [XF1 IN], [XF2 OUT], RT Ethernet; parameterisation and config-
uration via bus protocol
RT Ethernet protocol CMMT-ST-...-EC: EtherCAT
CMMT-ST-...-EP: EtherNet/IP
CMMT-ST-...-PN: PROFINET
Tab. 59: General technical data

Ambient conditions, transport in original packaging or in control cabinet

Transport temperature [°C] −25 … +70

Relative humidity [%] 5 … 95 (non-condensing)

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Technical data

Ambient conditions, transport in original packaging or in control cabinet

Max. transportation [d] 56 at 70 °C

duration
Permissible altitude [m] 12000 (above sea level) for 12 h
Vibration resistance Vibration test and free fall in packaging in accordance with
EN 61800-2
Tab. 60: Ambient conditions, transport

Ambient conditions, storage in original packaging or in control cabinet

Storage temperature [°C] −25 … +55

Relative humidity [%] 5 … 95 (non-condensing)
Permissible altitude [m] 3000 (above sea level)
Tab. 61: Ambient conditions, storage

Ambient conditions, operation

Ambient temperature [°C] 0 … +50

Cooling Through ambient air in the control cabinet
Relative humidity [%] 5 … 90 (non-condensing)
No corrosive media permitted near the device
Permissible setup alti- [m] 0 … 2000
tude above sea level Operation above 2000 m is not permitted!
Degree of protection IP20
Use in a control cabinet with at least IP54, design as “closed
electrical operating area” in accordance with EN 61800-5-1,
Chap. 3.5
Protection class III (safety extra-low voltage)
Overvoltage category I
Contamination level 2
Vibration resistance in accord- EN 61800-5-1 and EN 61800-2
ance with
Shock resistance in accordance EN 61800-2
with
EMC in accordance with EN 61800-5-2
Tab. 62: Ambient conditions, operation

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Technical data

Service life

Service life of the [h] 25000

device at rated load Dependent on the required current and the ambient tempera-
ture in compliance with the necessary mounting clearances and
derating è Fig. 15
Tab. 63: Service life

Materials

Housing Hood: plastic Akulon K223-KMV6

Cooling profile: sheet steel
Tab. 64: Materials

10.2 Technical data, electrical

10.2.1 Load and logic power supply [X9]

Electrical data, load power supply [X9], pin 1

Voltage range [V DC] 24 – 15 % … 48 + 15 %

Nominal operating [V DC] 24 … 48
voltage
Nominal current [A] 8
Peak current [A] 10 for 3 s
Nominal power [W] 300 at 48 V
Load efficiency [%] 96.5 at nominal power 300 W
Short circuit current [A] 5000
rating (SCCR)
Protective functions – Protection against polarity reversal
– Overcurrent protection input (15 A fuse, cannot be reset)
– Adjustable protection against feedback on intermediate circuit
rise
Tab. 65: Load power supply

Electrical data, logic power supply [X9], pin 3

Logic voltage range [V DC] 24 ± 15 %

Nominal voltage [V DC] 24
Current consumption [A] 1
(without holding brake)
Current consumption [A] 2
(with holding brake)

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Technical data

Electrical data, logic power supply [X9], pin 3

Logic efficiency [%] 82

Protective functions – Protection against polarity reversal
– Overvoltage protection (from approx. 32 V)
– Overcurrent protection input (4 A fuse, cannot be reset)
– Overcurrent protection + 24 V DC output [X1A] pin 1 and [X1C]
pin 1 (0.5 A fuse, can be reset, PTC)
Tab. 66: Logic supply

10.2.2 Power specifications, motor connection [X6]

Power specifications during operation

Nominal output current [A] 8

Tab. 67: Power specifications during operation
Any derating that may be necessary as a function of the ambient temperature è Fig. 15.
The CMMT-ST does not have any built-in electronic overload and overtemperature protection functions
for the motor. An I²t monitoring function can be parameterised for the motor current in order to protect
the motor, using the device-specific plug-in, for example.
Power unit temperature monitoring (parameterisable)

Warning [°C] 85
Shutdown [°C] > 95
Tab. 68: Temperature monitoring

Output of holding brake at [X6]

Design High-side switch

Max. continuous [A] 1 (parameterisable holding current reduction)
output current
Max. voltage drop from [V DC] 1
+ 24 V input at con-
nection [X9] to brake
output at [X6]
Protective functions Short-circuit and overload-protected
Tab. 69: Output of holding brake at [X6]

10.2.3 Encoder interfaces [X2]

Digital incremental encoder at [X2]

Parameterisable no. of 1 … 262144 periods/revolution (18 bit)

encoder pulses

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Technical data

Digital incremental encoder at [X2]

Angle resolution/inter- 4-fold evaluation as 4 steps (2 bits) per period

polation
Tracking signals A/B/N RS422/485
Input impedance [Ω] 120 (differential input)
A/B/N
Output supply [V] 5.25
[A] Max. 0.5, unregulated (no Sense cable)
Support: mechanical No
multiturn encoder
Support: battery-buf- No
fered multiturn
encoder
Support: encoder No
parameter memory
Encoder signal moni- No, no direct encoder signal monitoring
toring
Protective function No overload protection
Tab. 70: Digital incremental encoder at [X2]

Absolut encoder with BiSS C protocol

Supply [V] 5.25

[A] 0.5
Resolution can be parameterised - default: 16 bit
Support: mechanical No
multiturn encoder
Support: battery-buf- No
fered multiturn
encoder
Support: encoder Yes
parameter memory
Encoder signal moni- Yes
toring
Protective function No overload protection
Tab. 71: Encoder with BiSS-C protocol

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Technical data

10.2.4 Digital inputs and outputs [X1A]

Control inputs #STO-A and #STO-B at [X1A]

Nominal voltage [V DC] 24 (relative to 0 V at X9)

Permissible voltage [V DC] –3 … 30
range1)
Max. input voltage, [V] 28.8
high level (UH max)
Min. input voltage, [V] 20
high level (UH min)
Max. input voltage, low [V] 5
level (UL max)
Min. input voltage, low [V] –3
level (UL min)
Max. input current with [mA] 15
high level (IH max)
Min. input current with [mA] 8
high level (IH min)
Max. input current with [mA] 0.5
low level (IL max)
Tolerance for low test pulses
Tolerated low test [ms] 1
pulses (tSTO,TP) up to
max.
Min. time between low [ms] 50
test pulses
Tolerance for high test pulses2)
Tolerated high test [ms] 1
pulses (tSTO,TP) up to
max.
Min. time between [ms] 50
high test pulses at
USTO-A/B < UL max
1) Each channel has a separate overvoltage monitor for the power supply at the input. If the voltage at the input exceeds the permissible
maximum value, the channel is shut down.
2) High test pulses must never occur simultaneously at inputs #STO-A and #STO-B, but only with a time offset.
Tab. 72: Control inputs #STO-A and #STO-B at [X1A]

Diagnostic contact STA at [X1A]

Design Potential-free contact

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Technical data

Diagnostic contact STA at [X1A]

Voltage range [V DC] 18 … 30

Max. current [mA] 100 (not short-circuit proof )
Max. internal resist- [Ω] <6
ance
Off-state current (con- [µA] <2
tact open)
Closing reaction time [ms] . 80 (typ. 20)
tSTA,Rise
Opening reaction time [ms] ≤ 50 (typ. 30)
tSTA,Fall
Galvanic isolation Via optocoupler
Protective functions Overvoltage-resistant up to 60 V DC
Tab. 73: Diagnostic contact STA-C1/C2 at [X1A]

Digital inputs without safety inputs at [X1A]

Specification Based on type 3 to EN 61131-2; deviating current consumption

Nominal voltage [V DC] 24
Permissible voltage [V DC] −3 … 30
range
Min. input current in [mA] 1.5
transition range (IT min)
Logic PNP NPN
Max. input voltage [V] 30 5
(UH max), high level
Min. input voltage [V] Typically 11 Typically 0
(UH min), high level max. 13
Max. input voltage [V] 5 30
(UL max), low level
Min. input voltage [V] –3 11
(UL min), low level
Max. input current [mA] 15 –4
(IH max) with high level
Min. input current [mA] 5 –10
(IH min) with high level
Max. input current [mA] 15 3.43
(IL max) with low level

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Technical data

Digital inputs without safety inputs at [X1A]

Data for inputs Basic In 1 and Basic In 2 (Capture)

Delay time in the hard- [µs] <2
ware
Min. permissible pulse [µs] 10
length (high or low)
Time resolution/accu- [µs] <1
racy (high or low)
Data for the input CTRL-EN (power stage enable/acknowledge error)
Delay time in the hard- [µs] < 10
ware
Tab. 74: Digital inputs without safety inputs – part 1

Digital outputs at [X1A] (X1A.9 and X1A.10)

Design PNP operation: high-side switch

NPN operation: low-side switch
Characteristics – Freely configurable
– Not galvanically isolated
Voltage range [V DC] 0 … 30
Permissible output cur- [mA] 100
rent
Max. voltage loss [V] <3
Protective function – Short-circuit proof
– Feedback-proof
– Overvoltage-resistant up to 60 V
– Automatic switch-off in event of excessive temperature
Tab. 75: Digital outputs at [X1A]

Voltage for supplying external components at [X1A.1]

Output voltage [V DC] +24 (internal logic voltage)

Use Supply of potential-free outputs of the PLC, e.g. a potential-free
relay contact for the CTRL-EN input
Max. output current [mA] 100
Protective function – Short circuit to 0 V
– Feedback-proof
Tab. 76: Voltage for supplying external components at [X1A]

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Technical data

10.2.5 Reference switch [X1C]

Digital inputs for the reference switch/limit switch

Specification Based on type 3 to EN 61131-2; deviating current consumption

Nominal voltage [V DC] 24
Permissible voltage [V DC] −3 … 30
range
Min. input current in [mA] 1.5
transition range (IT min)
Logic PNP NPN
Delay time in the hard- [µs] < 30 < 4000
ware during switch-on
Delay time in the hard- [µs] < 4000 < 30
ware during switch-off
Max. input voltage [V] 30 5
(UH max), high level
Min. input voltage [V] Typically 11 Typically 0
(UH min) high level Max. 13
Max. input voltage [V] 5 30
(UL max), low level
Min. input voltage [V] –3 11
(UL min), low level
Max. input current [mA] 15 –4
(IH max), high level
Min. input current [mA] 5 –10
(IH min), high level
Max. input current [mA] 15 3.43
(IL max), low level
Tab. 77: Digital Input for Reference Switch/Limit Switch

Voltage for supply of external components at [X1C.1]

Output voltage [V DC] +24 (internal logic voltage)

Use Supply of axis peripheral modules, e. g. reference or limit switch
Max. output current [mA] 100
Protective function – Short circuit to 0 V
– Feedback-proof
Tab. 78: Voltage for Supply of External Components at [X1C]

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Technical data

10.2.6 Standard Ethernet [X18], parameterisation interface

Standard Ethernet [X18], parameterisation interface

Design To IEEE 802.3:2012-001)

Connection design RJ45
Transmission rate [Mbit/s] 10/100 (full/half duplex)
Supported protocols TCP/IP
IP address set at fac- 192.168.0.1
tory (presetting)
1) Restriction: The interface is galvanically isolated and intended for use with limited cable lengths.
Tab. 79: Standard Ethernet [X18]

10.2.7 Real-time Ethernet [XF1 IN], [XF2 OUT]

Real-time Ethernet [XF1 IN], [XF2 OUT]

Design RTE communication, physical level in accordance with

IEEE 802.3: 2012-001)
Bus connection design RJ45
[XF1 IN]
Bus connection design RJ45
[XF2 OUT]
Max. transmission rate [Mbit/s] 100
Bus protocol EtherCAT: CMMT-ST-...-EC
Protocol – CoE (CANopen over EtherCAT)
– EoE (Ethernet over EtherCATEtherCAT)
– FoE (File Access over EtherCAT)
Communication profile – CiA 402
Bus protocol EtherNet/IP: CMMT-ST-...-EP
Protocol – Implicit messaging
– Explicit messaging
Bus protocol PROFINET: CMMT-ST-...-PN
Protocol – PROFINET RT
– PROFINET IRT
Drive profile – PROFIdrive
1) Restriction: the interface is galvanically isolated and intended for use with limited cable lengths.
Tab. 80: Real-time Ethernet [XF1 IN], [XF2 OUT]

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Technical data

10.3 Characteristic curves

Required power reduction
Mounting clearances may be required at output currents > 4.6 A to ensure the device reaches its
specified service life. The required mounting clearances depend on the ambient temperature and the
output current.
Mounting clearances from 0 mm are possible for a device compound consisting of several servo drives
CMMT-ST. The following characteristic curves show the maximum permissible effective currents for the
lateral mounting clearances 0 mm, 3 mm, 10 mm and 15 mm.

Fig. 15: Power reduction as a function of the ambient temperature and mounting clearance

1 Mounting clearance 15 mm 3 Mounting clearance 3 mm

2 Mounting clearance 10 mm 4 Mounting clearance 0 mm

10.4 Technical data UL/CSA certification

In combination with the UL inspection mark on the product, the information in this section must also
be observed in order to comply with the certification conditions of Underwriters Laboratories Inc. (UL)
for USA and Canada.
UL/CSA certification information

Product category code NMMS / NMMS7 (Power Conversion Equipment)

File number E331130_Vol-3_Sec-1

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Technical data

UL/CSA certification information

Considered standards UL 61800-5-1 Adjustable Speed Electrical Power Drive Systems

CSA C22.2 No. 274-17 – Adjustable Speed Drive
UL mark

UL control number 4PU8

Tab. 81: UL/CSA certification information

Electrical Data and Ambient Conditions UL

Overvoltage category II
Pollution degree 2 (or better)
Protection class Class III (SELV/PELV)
Installation site for indoor use only
Max. installation height 2000 m
SCCR (short circuit current rating) 5000 A
Tab. 82: Electrical Data and Ambient Conditions UL/CSA
– Use 60/75 °C copper conductors only:
– [X6], motor connection
– [X9], load and logic voltage
– Use in an environment with pollution degree 2 (or better).
– Maximum surrounding air temperature: 50 °C
– With correct parameterisation of the nominal motor current, the motor is protected against over-
loading by the I²t monitoring function.
– For the load voltage supply, the use of a suitable fuse is recommended in accordance with the
following table.
Fuse requirements

Overcurrent protective device UL Listed JDDZ class K5

Max. permissible rated [A] 30
current
Min. short circuit cur- [kA] 5
rent rating SCCR of
mains fuse
Min. rated voltage [V DC] 125
Tab. 83: Fuse requirements for load voltage supply
Example: Littelfuse NLN 30, Bussmann NON-30

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 Copyright:
Festo SE & Co. KG
73734 Esslingen
Ruiter Straße 82
Deutschland

Phone:
+49 711 347-0

Internet:
© 2021 all rights reserved to Festo SE & Co. KG www.festo.com