Johnson Controls VFD66 Series Product/Technical Bulletin
Condenser fan speed controls
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- Quick start commissioning manual (3 pages) ,
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VFD66 Series Condenser Fan Speed Controls
The VFD66 Series Condenser Fan Speed Controls
regulate the speed of 3-phase condenser fan motors in
refrigeration and Heating, Ventilating, and Air
Conditioning (HVAC) systems by varying the
frequency and voltage of the power supplied to the
motor.
The VFD66 control accepts an input signal from the
P35 Pressure Transducer, P399 Electronic Pressure
Transducer, System 350
controls, or any other device that provides a 0-5 VDC
or 0-10 VDC analog output signal.
The application-specific design of the VFD66 control
provides a simple interface, which makes the control
easy to understand and operate.
Isolated Input Circuitry
Simultaneous Acceptance
of Two Similar Inputs
Compact Design
Three-Phase, 208/230, or
400/460 VAC Models
Few End-User Settings
© 2002 Johnson Controls, Inc.
Code No. LIT-125467
Part No. 24-7664-1555, Rev. D
pressure or temperature
Features and Benefits
Product/Technical Bulletin
Figure 1: VFD66 Condenser Fan Speed Control,
NEMA 4 and NEMA 1 Enclosures
Permits application with 0-5 VDC or 0-10 VDC
controllers, sensors, transducers, and
Johnson Controls System 350 controls
Allows use on dual refrigeration circuits
cooled by a single fan
Provides installation ease and flexibility
Handle three-phase motors ranging up to
10.6 amperes at 208/230 VAC or 5.5 amperes
at 400/460 VAC
Provide fast and easy installation and setup
VFD66
Issue Date
November 19, 2002
www.johnsoncontrols.com
1
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Table of Contents
Related Manuals for Johnson Controls VFD66 Series
Summary of Contents for Johnson Controls VFD66 Series
- Page 1 VFD66 Issue Date November 19, 2002 VFD66 Series Condenser Fan Speed Controls The VFD66 Series Condenser Fan Speed Controls regulate the speed of 3-phase condenser fan motors in refrigeration and Heating, Ventilating, and Air Conditioning (HVAC) systems by varying the frequency and voltage of the power supplied to the motor.
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Page 2: Installation
NEMA 4 enclosures. 3 conduit openings 1/2-in. trade size 1/4-in. (6 mm) mounting screws, 7/8-in. (22 mm) actual size 4 places Figure 3: Small VFD66 NEMA 4 Enclosure Dimensions VFD66 Series Condenser Fan Speed Controls Product/Technical Bulletin... - Page 3 1/2-in. trade size 4 places 7/8-in. (22 mm) actual size Figure 4: Large VFD66 NEMA 4 Enclosure Dimensions Table 2: Pressure Transducers, Temperature Controls, and Other Accessories for VFD66 Series Controls Product Code Description Information Number P35AG-9200R Pressure Transducer...
- Page 4 WARNING: Risk of Electrical Shock. Figure 5). The printed wiring board and its components are at AC line voltage. Direct or indirect contact with line voltage can result in personal injury or death. VFD66 Series Condenser Fan Speed Controls Product/Technical Bulletin...
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Page 5: Electrical Rating
0-5 VDC Power Supply First signal input Second signal input* Common Alarm Output for User-Installed 100 mA at 24 VAC/30 VDC Switch contact Alarm Device Switch contact See Adjusting the Control Settings. VFD66 Series Condenser Fan Speed Controls Product/Technical Bulletin... - Page 6 600 volts. Maximum terminal tightening torque for all VFD66 Figure 7: Wiring P399 Transducers to VFD66 controls electrical terminals is 5 lb·in (0.565 N·m). Terminal Block 3 VFD66 Series Condenser Fan Speed Controls Product/Technical Bulletin...
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Page 7: Setup And Adjustments
Failure to follow these precautions can Compliance (CE mark): result in personal injury or death. • 72/23/EEC (Low Voltage Directive) Control settings are established by positioning • 89/336/EEC (EMC Directive) six jumpers and adjusting two potentiometers. VFD66 Series Condenser Fan Speed Controls Product/Technical Bulletin... - Page 8 Jumper blocks J5 and J6 have jumpers installed on the two middle pins of each jumper block. These jumpers activate the internal potentiometers. Moving the jumpers from the factory-installed position disables the internal potentiometers. VFD66 Series Condenser Fan Speed Controls Product/Technical Bulletin...
- Page 9 7.05 amperes of current draw because De-Rated De-Rated of high altitude. Altitude Maximum Maximum Multiplier = Output De-rated Maximum Output Amperes = 7.5 Amperes x Output Amperes Amperes 0.94 = 7.05 Amperes VFD66 Series Condenser Fan Speed Controls Product/Technical Bulletin...
- Page 10 VFD66 controls are used with this mode. The input In Curve C, the minimum motor speed (P1) is set at device determines the setpoint and proportional band. 0% of maximum motor speed and the position of P2 has no effect. VFD66 Series Condenser Fan Speed Controls Product/Technical Bulletin...
- Page 11 Removed 200-350 psi Removed Installed 120-330 psi 38-150 psi 0-750 psi P399CAA-1C P399CAC-1C Removed Removed 300-525 psi Removed Installed 16-44% of range 5-20% of range Unknown Other Removed Removed 40-70% of range VFD66 Series Condenser Fan Speed Controls Product/Technical Bulletin...
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Page 12: Operation
VFD66 control adjusts the output voltage and frequency to avoid damaging the motor. The VFD66 control adjusts the output frequency to match the available input power. (See Figure 17 and Figure 18.) VFD66 Series Condenser Fan Speed Controls Product/Technical Bulletin... - Page 13 0-5 VDC 0-10 VDC the VFD66 control only (J7 jumper uses 0-5 VDC and the removed) motor reaches full speed when the input signal is at 5 VDC. VFD66 Series Condenser Fan Speed Controls Product/Technical Bulletin...
- Page 14 To reset a locked-out VFD66 control, follow the procedure below: 1. Disconnect power from the VFD66 control. 2. Wait 5 minutes to allow the internal capacitors to fully discharge. 3. Reapply power to the VFD66 control. VFD66 Series Condenser Fan Speed Controls Product/Technical Bulletin...
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Page 15: Selecting A Motor
FLA. Required Motor Specifications 3. Adjust the VFD66 control’s current rating for Motors used with the VFD66 Series Controls must: temperature and altitude. See De-Rating the VFD66 Control for High Temperatures and High •... -
Page 16: Repairs And Replacement
Repairs and Replacement Field repairs of the VFD66 control should not be made. For a replacement VFD66 control or input devices, contact your local Johnson Controls/PENN distributor. VFD66 Series Condenser Fan Speed Controls Product/Technical Bulletin... -
Page 17: Technical Specifications
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.