sect.

50 0910435
rev. 2020/02/17

TTD ™ Series
Configurable Fault Annunciator
The TTD product is a solid-state fault annunciator and
shut-down control system designed to protect engines,
pumps, compressors and associated equipment. The
TTD model accepts 48 sensor inputs from normally
open and/or normally closed sensors. Each of the 48
inputs can be configured for shutdown or alarm only.
Any input can be locked out by one of the two start-run
timers or configured as Class C, ESD or ignore. The
annunciator provides for both closing of a fuel valve
and grounding of an ignition after a time delay.
Incorporated in the TTD non-volatile memory:
• Run Hours/Elapsed Time Meter (hours roll over at
99,999)
• Last 10 shutdowns with associated run hours
• Last four alarms with associated run hours
• Selectable Modbus RTU slave RS232/RS485 serial
communications
• Selectable baud rates
Optional Features:
• Pre/Post lube timed functionality
• Tachometer with overspeed and underspeed
setpoints and running hours
• Lubricator no-flow detection for up to four proximity
switches
With the TTD series, the display head is common to Display Head
all configurations allowing fewer spare parts required to
be maintained in the field. Its user-selectable templates The display head shows operational and configuration
provide ease of retrofit by selecting configuration of data. Configuration parameters are entered via keypad
existing annunciators via display keypad or download or downloaded from MConfig software.
from a computer with Windows-based MConfig™ The display head will accept digital inputs directly on
installed. the back of the unit. Power is provided to the display
head via a direct Phoenix connector. The display head
Power Supply contains the microprocessor, LCD, membrane keys for
configuring the sensors inputs and the sensor input
The power input and control output terminals terminal blocks.
are mounted on the plug-in power supply (PSU- The TTD LCD annunciates any fault from the sensor
2). Power supplies also include an RS485/RS232 inputs, displays engine speed and run hours/elapsed
serial communication port (MODBUS RTU slave) time meter. Other features for the TTD are: built-in test
to interface with microcontrollers, PCs, PLCs and/ mode function to check the sensor circuits without
or communication and control systems. The serial causing a fault shutdown; pre-lubrication and post-
communication provides read and write register lubrication timers; and onboard backup battery to retain
capability and selectable baud rate up to 38,400. the fault display after shutdown on ignition powered
All power supply models are reverse polarity protected units.
and can be powered by 10-32vdc or 90-400vdc
negative ground CD ignition. The TTD annunciator is
fully operable with the internal battery. The external DC
power enables communications support (MODBUS
slave) and turns on the display backlight.

In order to consistently bring you the highest quality, full-featured products, we reserve the right to change our specifications and designs at any time.
FW MURPHY product names and the FW MURPHY logo are proprietary trademarks. This document, including textual matter and illustrations, is copyright
protected with all rights reserved. (c) 2020 FW MURPHY. A copy of our typical warranty may be viewed or printed by going to www.fwmurphy.com/warranty.
Specifications
Power Requirements: Communication Ports: 1
PSU-2: 10-32 VDC, 10 W (max); 90-400 VDC CD Ignition, 750 uA A single bi-color (green/red) LED is provided to give visual indication
@ 100 VDC (max) of active transmit and receive traffic. Only one connection will be
On-Board Backup Power: Lithium battery, 6 VDC, 1300 mAh. active at any time.
Digital Inputs: 48 (aka channels) Interface: Factory configured for RS485; field-selectable for 3-wire
Sensor Types: Discrete input, N.O./N.C., non-incendive RS232 or RS485
Magnetic Pickup Input: Baud/Stop Bit Selections: 9600, 19.2K, 38.4K†;N,8,1;N,8,2
One Magnetic Pickup Sensor Input: 3.6 - 120 VAC, 2-10 kHz. Protocol: MODBUS RTU
Outputs: Connection: There are two screw terminal connectors for RS485.
IGN: 0.4 A @ 400 VDC* for 5 seconds There are two screw terminal connectors for RS232. There is one
0.15 A @ 400 VDC(*) cont. duty screw terminal common for both ports labeled as GND.
RLY: 0.5 A @ 48 VDC cont. duty Third-Party Approvals:
FV- : 0.5 A @ 400 VDC(*) cont. duty TTD-H, PSU-2: CSA Class I, Division 2, Groups B, C and D
ALR: 0.5 A @ 48 VDC cont. duty TTD-H: IEC 60529 - IP66 (NEMA 4 & 4 X equivalent)
AUX: 0.5 A @ 48 VDC cont. duty Intuitive Display Icons: Display status and assist in setup and
Operator Interface: operation. The appropriate icon will turn on to indicate unit status or
Display Type: LCD, Static, 80 segment, custom text with LED navigation through the setup features.
backlight RUN – Run mode
Display Viewable Area: ~ 2.79 x 1 in. (71.04 mm x 25.4 mm) RPM – Screen Value
Display Contrast: Automatic HOURS – Screen Value
Display Backlight: Yellow (Normal Operation); Red (Shutdown) TYPE – Channel Type Configuration
(Backlight will only be available when unit is powered by DC) LOW BATT – Low Battery Warning (displayed when condition
Voltage Level Monitor: Monitor and display voltage level of DC exists)
supply, CD ignition and internal battery HISTORY – Shutdown History
Keypad: 6 switches: Ridge Embossed, Metal Dome, Tactile 14 Oz. TEST – Test Mode
Trip Force LUBE – Pre-lubrication Timer
Enclosure Cutout: 5.50 x 5.50 in. (133 mm) POSTLUBE – Post-lubrication Timer
Operating, Storage and Viewable Temperature: SHUTDOWN – Stop Mode
-40° F - 185° F (-40° C to 85° C) ALARM – Alarm(s) Warning (displayed when condition exists)
VTachometer Accuracy: ±0.5% of the display reading or ±1 SETPOINT – Edit Set-point Value
RPM, whichever is greater SETUP – Setup Menu(s)
Resettable Hourmeter Range: 0 to 99999 hrs.
Non-Resettable Hourmeter Range: 0 to 99999 hrs. * CSA approved for 250 VDC maximum
Hourmeter Accuracy: ±1 hour per year †
38.4 K baud will not be available when IGN input is selected as the
source for RPM calculations. When MPU is selected, this feature is
available for selection.

Dimensions
Display Head

Power Supply (PSU-2)

TTD System

TTD-H Display Head

TTD Intuitive Display Icons

The TTD system features a static LCD (A)

with backlight (external DC is required). The
applicable icon and number (B, C and D) will
be displayed to clarify the display readings or
alert the operator to an operating condition.
How to Order

Options listed below. All configurations may not be available. Call your sales representative or FW Murphy for more
information.

TTD – 2 – T – L-N
Base Model
Auxiliary Pre / Post Lube Functionality
PSU-2: CSA Class I, Division 2,
2 = Groups B, C and D, Direct Mounted With:
L-N = • Auxiliary Pre / Post Lube
• No-Flow Detection
Tachometer with Overspeed Functionality Without:
Blank = • Auxiliary Pre / Post Lube
T = With (Tachometer with Overspeed) • No-Flow Detection
Blank = Without (Tachometer with Overspeed)

2 T L-N Approximate Shipping Weight and Dimensions

TTD-2 X
Model Weight Dimension
TTD-2-T X X
TTD-2 5 lb. 4 oz. 15 x 15 x 15 in.
TTD-2-L-N X X
TTD-2-T 5 lb. 1 oz. 10 x 12 x 12-1/4
TTD-2-T-L-N X X X

Part Number Description Notes

50700597 TTD-H Display Head
50700596 PSU-2 Div 2 Power Supply
50700594 PSU-2-T Div 2 Power Supply w/ Tach
Replacement Parts
50700944 PSU-2-L-N Div 2 Power Supply w/Pre/Post Lube and No-Flow
and Assemblies
50700942 PSU-2-T-L-N Div 2 Power Supply w/ Tach, Pre/Post Lube and No-Flow
00005125 Backup Lithium Battery, 6VCD, 1200mAh
50000774 Ignition Choke Filter

Approximate Shipping Weight and Dimensions

Model Weight Dimension
TTD-H Display Head 2 lbs. 4oz. 8 x 8 x 8 in.
All PSU Div 2 Power Supply 7 oz. 5 x 5 x 3 in.