VFD66 Series Condenser Fan Speed Controls
VFD66 Series Condenser Fan Speed Controls
VFD66 Series Condenser Fan Speed Controls
Isolated Input Circuitry Permits application with 0-5 VDC or 0-10 VDC
controllers, sensors, transducers, and
Johnson Controls System 350 controls
Simultaneous Acceptance Allows use on dual refrigeration circuits
of Two Similar Inputs cooled by a single fan
Compact Design Provides installation ease and flexibility
Three-Phase, 208/230, or Handle three-phase motors ranging up to
400/460 VAC Models 10.6 amperes at 208/230 VAC or 5.5 amperes
at 400/460 VAC
Few End-User Settings Provide fast and easy installation and setup
IMPORTANT: The VFD66 Series Condenser Fan stabilize the condenser head pressures, which helps
Speed Controls are intended to control equipment optimize compressor operation and can reduce wear
under normal operating conditions. Where failure or and extend compressor life
malfunction of a VFD66 control could lead to an eliminate the condenser fan short-cycling, which can
abnormal operating condition that could cause reduce motor repair and replacement costs
personal injury or damage to the equipment or other
property, other devices (limit or safety controls), or stabilize evaporator temperatures, which can extend
systems (alarm or supervisory) intended to warn of refrigerated product life and provide more consistent
or protect against failure or malfunction of the comfort cooling
VFD66 control must be incorporated into and
maintained as part of the control system. Mounting
The VFD66 control accepts input signals from a variety
of pressure transducers, temperature sensors, and
! CAUTION: Risk of Property Damage.
low-voltage controllers to provide continuous response The VFD66 control can generate and dissipate
to changing condenser load conditions. significant heat. Mount the control on a metal,
concrete, or cinderblock mounting surface. Mounting
The VFD66 control allows the system to:
the VFD66 control on surfaces made of wood or
maintain optimum condenser head pressure in low other heat-sensitive material may result in damage
ambient temperature conditions to the mounting surface.
eliminate short-cycling in low ambient temperatures or Observe the following the guidelines when mounting a
changing load conditions VFD66 control:
match the condenser fan speed to the load on the Mount the VFD66 control on a vertical surface with the
condenser, which increases the efficiency of the heat sink fins oriented vertically and the conduit holes
refrigeration system. This can reduce electricity cost facing down.
and help maintain a constant evaporator temperature.
Provide a minimum of 4 in. (102 mm) clearance
around the heat sink.
Terminal
Diagnostic Access Ensure that output power wiring between the VFD66
Light-Emitting Cover
control and the motor does not exceed 50 ft (15 m).
Diodes (LEDs)
Mount the VFD66 control indoors, in a location
6-1/4 protected from explosive vapors, corrosive gas, water,
(159) and dust.
4-3/4
(120)
Ambient air temperature and installation altitude affect
the maximum output rating of the VFD66 controls (see
De-Rating the VFD66 Control for
Terminal
Cover High Temperatures and High Altitudes).
Screw
7 4-5/8
7-1/2 (177) Heat (117)
(190) Sink
7-1/4
(184)
Ground
Connection Terminals Potentiometers
Route wiring from input devices
through this conduit entry hole.
24V
SN
!
C
V
I
Commissioning
Table 6: Mode Selections According to Input Device
Input Device Input Type Input Mode J2 Jumper J3 Jumper J7 Jumper
Position Position Position1
Any2 None
2
Manual Installed Installed NA
A350P Temperature Standard Installed Removed Removed
P352PN Pressure Standard Installed Removed Removed
P35AG-9200 Pressure Standard Installed Removed Installed
3
Any 0-5 VDC Devices Any Standard Installed Removed Installed
3
Any 0-10 VDC Devices Any Standard Installed Removed Removed
P499 or Other Electronic Pressure Electronic Pressure Removed Removed or Removed or Installed4
4
Pressure Transducer Transducer Installed
1. J7 jumper position depends on the input device connected.
2. Setting the input mode to manual ignores any connected input devices.
3. Input type varies with device.
4. Transducer may provide 0-5 VDC or 0-10 VDC signal. A 0-10 VDC transducer must be separately powered. Note that
a non-ratiometric transducer generates more error than ratiometric transducers.
Operation Troubleshooting
The VFD66 controls feature two diagnostic LEDs: If the VFD66 control provides reduced output voltage
POWER and ALARM. (See Figure 14.) and frequency, see Undervoltage Operation. If the
VFD66 control operates in another unexpected
The POWER LED illuminates when power is applied to
manner, see Undervoltage Operation.
the VFD66 controls. When power is disconnected from
the VFD66 controls, this LED remains illuminated
Undervoltage Operation
while the power supply capacitors discharge. If the
motor is not running when power is removed, the LED If the supply voltage drops below 60% of nominal, the
may remain illuminated for up to 5 minutes, while the VFD66 control stops the motor until the voltage returns
capacitors discharge. to or rises above 60%.
The ALARM LED indicates fault conditions and If the supply voltage is between 60% and 100% of
provides diagnostic information. Constant illumination nominal, the VFD66 control adjusts the output voltage
of this LED indicates that the motor is overloaded and and frequency to avoid damaging the motor. The
the VFD66 control shuts down the motor. VFD66 control adjusts the output frequency to match
the available input power. (See Figure 15 and
When the ALARM LED flashes, the VFD66 control has Figure 16.)
shut down the motor. The number of times the ALARM
LED flashes indicates the cause of the fault.
(See Troubleshooting.)
POWER ALARM
LED LED
(Green) (Red)
Table 13: Pressure Transducers, Temperature Controls, and Other Accessories for VFD66 Series Controls
Product Code Description Accessory Information
Number
P35AG-9200R Pressure Transducer Refer to P35 Pressure Transducer and VFD66 Control
0-350 psi range Application Note (LIT-121418) for more information.
P499RAP-101K One Electronic Pressure Transducer Product code numbers ending in K are P499 kit models that
P499RCP-101K (0-100 psi range) and one include one P499 transducer model and one
WHA-PKD3-200C Wire Harness WHA-PKD3-200C (6-1/2 ft [2 m]) wiring harness.
P499RAP-102K One Electronic Pressure Transducer To order a single P499 transducer model (without a WHA-
(0-200 psi range) and one PKD3-200C wiring harness), replace the K with a C at the
WHA-PKD3-200C Wire Harness end of the P499 product code number.
P499RAP-105K One Electronic Pressure Transducer P499RAP type models are 0-5 VDC ratiometric pressure
(0-500 psi range) and transducers with an 1/8 in. #27 NPT male/external thread
P499RCP-105K
WHA-PKD3-200C Wire Harness (Style 49) fitting.
P499RAP-107K One Electronic Pressure Transducer, P499RCP type models are 0-5 VDC ratiometric pressure
(0-750 psi range) and one transducers with a 1/4 in. SAE 45º Flare female/internal
P499RCP-107K
WHA-PKD3-200C Wire Harness thread (7/16-20UNF) with valve depressor (Style 47) fitting.
WHA-PKD3-200C Wire Harness with pigtail leads, Refer to the P499 Series Electronic Pressure Transducers
6-1/2 ft (2 m) Product/Technical Bulletin (LIT-12011190) for more
information on P499 pressure transducer models and the
WHA-PKD3-400C Wire Harness with pigtail leads, 13 ft associated wire harnesses.
(4 m)
WHA-PKD3-600C Wire Harness with pigtail leads,
19-5/8 ft (6 m)
A350PS-1C Proportional Plus Integral Refer to the System 350TM A350P Electronic Proportional
Temperature Control Plus Integral Temperature Control Product/Technical
Bulletin (LIT-930020) for more information.
A350PS-1C Proportional Plus Integral Pressure Refer to the System 350TM P352PN Electronic Proportional
Control Plus Integral Pressure Controls for PSI Applications
Product/Technical Bulletin (LIT-930044) for more
information.
VFD66-CVR-1C External Potentiometer Replacement Refer to the Installing the External Potentiometer
Cover Replacement Cover Application Note (LIT-121419) for more
information.
E 0-5 VDC or 0-10 VDC Dual Analog Input Signal with Alarm Output
1. Maximum output ampere ratings. See De-Rating the VFD66 Control for High Temperatures and
High Altitudes for temperature and altitude effects on VFD66 control ratings.
Emissions Compliance FCC (US), DOC (Canada), based on EU testing with Emissions Compliance items installed,
shown in Figure 8.
EU Directive Compliance (CE mark); 72/23/EEC (Low Voltage Directive) and 89/336/EEC
(EMC Directive) compliance with Emissions Compliance items installed, shown in Figure 8.
Input Devices Johnson Controls/PENN (A350P, P35, P352P, P499, Performer Rack Controllers)
Johnson Controls Metasys® system (AHU, DME, DX9100, UNT, VAV)
Also works with rack controllers, electronic pressure transducers, and other 0-5 VDC or
0-10 VDC input signal devices made by various manufacturers.
Dimensions (H x W x D) See Figure 2.
Shipping Weight NEMA 1 Enclosure models – 5.6 lb (2.5 kg)
NEMA 1 Enlcosure models with Optional Alarm Board – 5.8 lb (2.6 kg)
The performance specifications are nominal and conform to acceptable industry standards. For application at conditions beyond these
specifications, consult Johnson Controls/PENN Refrigeration Application Engineering at 1-800-275-5676. Johnson Controls, Inc. shall not be
liable for damages resulting from misapplication or misuse of its products.
Building Efficiency
507 E. Michigan Street, Milwaukee, WI 53202
Metasys® and Johnson Controls® are registered trademarks of Johnson Controls, Inc.
All other marks herein are the marks of their respective owners. © 2010 Johnson Controls, Inc.