Johnson Controls Penn VFD68D Series Service manual

VFD68 Variable Frequency Drives Technical Bulletin
1
Refer to the QuickLIT website for the most up-to-date version of this document.
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
North American Emissions Compliance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
United States . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Canada . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Agency Standards Compliance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Agency Standards Compliance for VFD68Bxx and VFD68Cxx Drives . . . . . . . . . . . . . . . . . 5
Agency Standards Compliance for VFD68Dxx Drives. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Checking the Rating Plate. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Selecting a Motor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Selecting a VFD68 Drive for Controlling Multiple Motors . . . . . . . . . . . . . . . . . . . . . . . . 7
Selecting a VFD68 Drive for Use with Single-Phase Supplied Power. . . . . . . . . . . . . . . 7
Location Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Dimensions for VFD68Bxx and VFD68Cxx Drives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Dimensions for VFD68Dxx Drives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Mounting the VFD68Bxx and VFD68Cxx Drives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Mounting the VFD68Dxx Drives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Wiring. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Terminal Screw Torque Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Branch Circuit Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Short Circuit Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
High-Voltage Wire Size and Maximum Wire Length. . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Selecting the Correct VFD68 Drive for Your Fan Motor. . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
VFD68 Variable Frequency Drives
Technical Bulletin
VFD68Bxx, VFD68Cxx, VFD68Dxx Part No. 24-7664-3051, Rev. C
Issued October 2017

VFD68 Variable Frequency Drives Technical Bulletin
2
Calculating the Maximum Wire Length . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
High-Voltage Wiring Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Making High-Voltage Wiring Connections on VFD68Bxx and VFD68Cxx Drives . . . . . . . . 24
Making High-Voltage Wiring Connections on VFD68Dxx Drives. . . . . . . . . . . . . . . . . . . . . 26
Low-Voltage Wiring Connections. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Making Low-Voltage Wiring Connections on VFD68Bxx and VFD68Cxx Drives . . . . . . . . 28
Making Low-Voltage Wiring Connections on VFD68Dxx Drives . . . . . . . . . . . . . . . . . . . . . 31
Input Wiring Connections. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Setup and Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Correspondences Between Digital and Actual Characters . . . . . . . . . . . . . . . . . . . . . . 38
VFD68Bxx and VFD68Cxx Operation Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Operation Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
RUN, MON, PRM LEDs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
VFD68Dxx Drives Operation Panel. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Mode of Operation Icons . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Display Code . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
VFD68Bxx and VFD68Cxx Drive Basic and Advanced Parameters . . . . . . . . . . . . . . . 43
VFD68Dxx Drive Parameters. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
Frequency and Motor Speed. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
Parameter Setting Calculations for Motor Speed vs. Pressure. . . . . . . . . . . . . . . . . . . 49
Calculating C x Parameters for VFD68Bxx and VFD68Cxx Models . . . . . . . . . . . . . . . . . 49
Calculating Parameters 902 to 905 for VFD68Dxx Models . . . . . . . . . . . . . . . . . . . . . . . . 51
PWM Frequency, Audible Motor Noise, and EMI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
Adjusting the Default Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
VFD68Bxx and VFD68Cxx Drives. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
VFD68Dxx Drives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
Configuring Manual Motor Speed Control in PU Mode . . . . . . . . . . . . . . . . . . . . . . . . . 56
VFD68Bxx and VFD68Cxx Drives. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
VFD68Dxx Drives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
Configuring EXT Mode Using Analog Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57

VFD68 Variable Frequency Drives Technical Bulletin
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VFD68Bxx and VFD68Cxx Drives. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
VFD68Dxx Drives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
Causes and Corrective Actions For Each Error Message . . . . . . . . . . . . . . . . . . . . . . . . . . 61
Warning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
Alarm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
Fault. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
Resetting the VFD68 Drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69
Reset Option 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69
Reset Option 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69
Manually Stopping the Motor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69
Restarting the Motor After It Has Stopped . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
VFD68Bxx and VFD68Cxx Drives. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
VFD68Dxx Drives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
Advanced Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71
Technical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
VFD68Bxx or VFD68Cxx Variable Frequency Drive (230 or 460 VAC) . . . . . . . . . . . . . 76
VFD68Dxx Variable Frequency Drive (575 VAC). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
Appendix 1: Check Fault History. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78
Appendix 2: Additional VFD68 Drive Application Examples. . . . . . . . . . . . . . . . . . 80
VFD68Bxx and VFD68Cxx Drives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80
VFD68Dxx Drives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85
Appendix 3: Password Functions (P.296, P.297) . . . . . . . . . . . . . . . . . . . . . . . . . . . 88
Parameter Reading and Writing Restriction Level . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88
Password Lock and Unlock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89
Lock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89
Unlock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89
Appendix 4: VFD68Bxx and VFD68Cxx ModBus RTU RS485 Communications Bus Speci-
fications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90
Communication Specification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92

VFD68 Variable Frequency Drives Technical Bulletin
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Outline. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92
Message Format. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93
Query. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93
Normal Response . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93
Error Response . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93
Broadcast. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93
Message Frame (Protocol) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94
Communication Method. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94
Protocol Details . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94
Message Format Types. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96
Read Holding Register Data (H03 or 03). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96
Write Holding Register Data (H06 or 06). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98
Function Diagnosis (H08 or 08). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99
Write Multiple Holding Register Data (H10 or 16) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100
Read Holding Register Access Log (H46 or 70) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101
Error Response . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102
Message Data Mistake Detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102
Modbus Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103
P.343 Communication Error Count . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 106
Output Terminal LF: Alarm Output (Communication Error Warnings). . . . . . . . . . . . 106
Appendix 5: EMC Line Filter Selection Chart . . . . . . . . . . . . . . . . . . . . . . . . . . . . 107

VFD68 Variable Frequency Drives
5
VFD68 Variable Frequency Drives
Introduction
The VFD68 Variable Frequency Drives are designed to provide three-phase motor speed control in a variety of
HVACR applications. The VFD68 drives are factory-configured for condenser fan speed control on HVACR
condensing units. You can quickly and easily reconfigure the VFD68 drives to control variable speed pumps in
cooling and heating applications, or to drive variable speed supply fans in VAV applications.
Note: The VFD68 drive cannot drive motors in conveyor systems or robotic applications.
Do not attempt to install, operate, maintain, or inspect the VFD68 drive until you have read through this
document carefully and can use the equipment correctly. Do not use this product until you fully
understand the equipment, safety information, and instructions.
North American Emissions Compliance
United States
Canada
Agency Standards Compliance
Agency Standards Compliance for VFD68Bxx and VFD68Cxx Drives
• North America: cULus Listed; UL 508C, USA File: NMMS.E244421; Canada File: NMMS7.E244421
• Europe: CE Mark – Conforms to the provisions of the Low Voltage Directive and the EMC Directive when
an EMC-compliant line filter is attached to the power supply.1
• Australia: Regulatory Compliance Mark (RCM)
IMPORTANT: Use this VFD68 Variable Frequency Drive only as an operating control. Where failure or
malfunction of the VFD68 Drive could lead to personal injury or property damage to the controlled equipment
or other property, additional precautions must be designed into the control system. Incorporate and maintain
other devices, such as supervisory or alarm systems or safety or limit controls, intended to warn of or protect
against failure or malfunction of the VFD68 Drive.
IMPORTANT : Utiliser ce VFD68 Variable Frequency Drive uniquement en tant que dispositif de régulation.
Lorsqu'une défaillance ou un dysfonctionnement du VFD68 Drive risque de provoquer des blessures ou
d'endommager l'équipement contrôlé ou un autre équipement, la conception du système de contrôle doit
intégrer des dispositifs de protection supplémentaires. Veiller dans ce cas à intégrer de façon permanente
d'autres dispositifs, tels que des systèmes de supervision ou d'alarme, ou des dispositifs de sécurité ou de
limitation, ayant une fonction d'avertissement ou de protection en cas de défaillance ou de
dysfonctionnement du VFD68 Drive.
This equipment has been tested and found to comply with the limits for a Class A digital device pursuant to
Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful
interference when this equipment is operated in a commercial environment. This equipment generates, uses,
and can radiate radio frequency energy and, if not installed and used in accordance with the instruction manual,
may cause harmful interference to radio communications. Operation of this equipment in a residential area may
cause harmful interference, in which case users will be required to correct the interference at their own expense.
This Class (A) digital apparatus meets all the requirements of the Canadian Interference-Causing Equipment
Regulations.
Cet appareil numérique de la Classe (A) respecte toutes les exigences du Règlement sur le matériel brouilleur
du Canada.
1. For more information, see Appendix 5: EMC Line Filter Selection Chart on page 107.

VFD68 Variable Frequency Drives
6
Agency Standards Compliance for VFD68Dxx Drives
• North America: cULus Listed; UL 508C, USA File: NMMS.E244421; Canada File: NMMS7.E244421
Installation
Checking the Rating Plate
Before you install the VFD, check the rating plate on the side to verify that the voltage, kW (horsepower), and
output current ratings are correct for your application. See Figure 1, Table 1, and Selecting the Correct VFD68
Drive for Your Fan Motor on page 20.
For example, a VFD68BGG would be rated for 200–240 VAC and 2 horsepower.
Table 1: VFD68 Drive Model Information
Voltage kW (Horsepower) Dimensions, H x W x D, mm (in.)
B200–240 VAC, 50/60 Hz 0.1 (1/8) 128 x 68 x 81 (5 x 2-11/16 x 3-3/16)
C400–480 VAC, 50/60 Hz 0.2 (1/4) 128 x 68 x 113 (5 x 2-11/16 x 4-7/16)
D575 VAC, 60 Hz 0.4 (1/2) 128 x 68 x 133 (5x 2-11/16 x 5-1/4)
F0.75 (1) 128 x 108 x 130 (5 x 4-1/4 x 5-1/8)
G1.5 (2) 128 x 108 x 136 (5 x 4-1/4 x 5-5/16)
H2.2 (3) 128 x 108 x 156 (5 x 4-1/4 x 6-1/8)
J3.7 (5) 128 x 108 x 166 (5 x 4-1/4 x 6-1/2)
K5.5 (7-1/2) 128 x 170 x 142 (5 x 6-11/16 x 5-5/8)
L7.5 (10) 150 x 220 x 155 (5-15/16 x 8-11/16 x 6-1/8)
M11 (15) 150 x 140 x 136 (5-15/16 x 5-1/2 x 5-5/16)
N15 (20) 150 x 220 x 148 (5-15/16 x 8-11/16 x 5-13/16)
P260 x 220 x 190 (10-1/4 x 8-11/16 x 7-1/2)
IMPORTANT: Frequently starting and stopping the VFD shortens the lifespan of the VFD68 drive. In
applications where the drive will start or stop frequently, select a VFD which has an output current rating that
is 1.5 to 2 times greater than the FLA current rating of the three-phase motor.
Figure 1: Rating Plate
Rating plate
VFD model
Input rating
Output rating
Serial number
DATE:XXXX-XX
Production year and month
Johnson Controls
VFD68
-2C
Voltage
Kilowatts
(Horsepower)
Dimensions
H x W x D
FIG:VFD68_rtng_plt
SERIAL :
OUTPUT : XXXX
INPUT : XXXX
MODEL

VFD68 Variable Frequency Drives
7
Selecting a Motor
Motors used with the VFD68 drive must:
• be AC induction three-phase motors that are UL Recognized and CSA Certified, or equivalent
• be rated for: 230 VAC at 50/60 Hz; 460 VAC at 50/60 Hz; or 575 VAC at 60 Hz
• have an Inverter Rating (460 VAC motors)
• have Insulation Class F or better
The VFD68 drive is intended for use with variable speed motors that are rated for 40:1 operation.
Selecting a VFD68 Drive for Controlling Multiple Motors
A VFD68 drive can control multiple motors; however, the sum of the Full Load Amperes (FLA) ratings for the
motors must not exceed the maximum output amperage rating of the VFD68 drive, including any de-rating due
to altitude. See Table 3 on page 9 for de-rating information.
Selecting a VFD68 Drive for Use with Single-Phase Supplied Power
When using a single-phase power supply, the VFD68 drive requires more single-phase power to create
three-phase power for the motor. Therefore, you must select a VFD68 drive with a higher maximum output
current rating as follows:
• R = Current (Ampere) rating of the controlled single-phase motor (or sum of ratings, if using multiple
motors)
• 2*R = minimum required output current for VFD68 drive
Select a VFD68 drive such that Maximum Output Current (Ampere) > 2*R (see Table 2).
IMPORTANT: When selecting the motor, do not exceed the maximum ampere rating of the
VFD68 drive.
IMPORTANT: Do not control both single-phase and three-phase motors with the same VFD68 drive.
Table 2: Maximum Current Output by VFD68 Drive Model
VFD68Bxx
Models Maximum Output
Current
(Amperes)
VFD68Cxx
Models Maximum Output
Current
(Amperes)
VFD68Dxx
Models Maximum Output
Current
(Amperes)
VFD68BBB 0.8 VFD68CDF 1.2 VFD68DFM 1.7
VFD68BCB 1.4 VFD68CFF 2.2 VFD68DGM 2.7
VFD68BDC 2.5 VFD68CGG 3.6 VFD68DHM 4.0
VFD68BFD 4.2 VFD68CHH 5.0 VFD68DJN 6.1
VFD68BGG 7.0 VFD68CJJ 8.0 VFD68DKN 9.0
VFD68BHG 10.0 VFD68CKL 12.0 VFD68DLN 12.0
VFD68BJK 16.5 VFD68CLL 16.0
VFD68BKL 23.8 VFD68CMP 23.0
VFD68BLL 31.8 VFD68CNP 29.5
VFD68BMP 45.0
VFD68BNP 58.0

VFD68 Variable Frequency Drives
8
Location Considerations
Observe the following location guidelines:
• Ensure that the mounting surface can support the VFD, mounting hardware, and any user-supplied panel
or enclosure.
• Mount the VFD on flat, even surfaces.
• Allow sufficient space for wires and connections.
• Do not mount the VFD on surfaces that are prone to vibration or in locations where radio frequency or
electromagnetic emissions may cause interference.
• Do not install the VFD in an airtight enclosure.
• Do not install heat-generating devices that may cause the temperature to exceed the ambient operating
limit in the same enclosure as the modules.
The VFD68 drive has been approved for use in an enclosure. Approval tests were conducted under the
conditions in Table 3.
When mounting the VFD68 drive in an enclosure, ensure that the specified space around the drive is
maintained, and that the ambient conditions are within the specified limits.
!
WARNING: Risk of Fire or Electric Shock.
Install the device in an environment relatively free of contaminants such as dust, condensation, or
chemical agents. A dirty or damp environment may cause an electric arc across contaminated
terminals.
AVERTISSEMENT : Risque de décharge électrique ou incendie.
Installer l'appareil dans un environnement présentant une quantité réduite de contaminants tels que
de la poussière, de la condensation ou des agents chimiques. Un environnement pollué ou humide
risque d'entraîner la formation d'un arc électrique entre des bornes contaminées.
!
CAUTION: Risk of Property Damage.
The VFD68 Drive can generate and dissipate significant heat. Mount the VFD68 Drive on a metal,
concrete, or cinder block mounting surface. Mounting the VFD68 Drive on surfaces made of wood
or other heat-sensitive material may result in damage to the mounting surface.
MISE EN GARDE : Risque de dégâts matériels.
Le VFD68 Drive peut générer et émettre une chaleur importante. Installer le VFD68 Drive sur une
surface de montage en métal, en béton ou en parpaings. L'installation du VFD68 Drive sur une
surface en bois ou composée de matériaux sensibles à la chaleur risque d'endommager la surface
de montage.
IMPORTANT: The VFD68 Drive is intended to be mounted in an enclosure that only allows access
by trained and authorized personnel, and that prevents the ingress of contamination. It is designed for
use in an environment classified as pollution degree 2 in accordance with IEC 60664-1. This means that
only dry, non-conducting contamination is acceptable.

VFD68 Variable Frequency Drives
9
Table 3: Environmental Considerations
Surrounding Air
Temperature1
1. Surrounding air temperature is a temperature measured at a measurement position in an enclosure. Ambient air
temperature is a temperature outside an enclosure. The VFD68 is designed to operate above 50°C by following the
maximum output current derating limits show in Table 4 and Table 5 and Figure 2.
-40 to 50°C (-40 to 122°F)
as measured 5 cm from the VFD
Ambient Humidity 90% RH or less (Non-condensing)
Storage Temperature -40 to 65°C (-40 to 149°F)
Atmosphere Indoors (no corrosive and flammable gases, oil mist, dust and dirt.)
Altitude Limit2: Below 1,000 m (3,280 ft) above sea level
2. Altitude limit given is for standard operation of the VFD. For operation at higher altitudes, derate by 3% for each 500 m
(1,640.4 ft), up to a maximum of 2,500 m (8,202 ft) (91% derating).
Vibration Limit: 5.9 m/s2(19.4 ft/s2)or less at 10–55 Hz (directions of x, y, z axes)
Table 4: Maximum Current Output Derating above 50°C by VFD68Bxx Drive Model
VFD68Bxx Models Rated Capacity
kW (HP) Maximum Output Current at 50°C
(Amperes)
Maximum Output
Current at 60°C
(Amperes)
Maximum Output
Current at 70°C
(Amperes)
VFD68BBB 0.1 (1/8) 0.8 0.6 0.5
VFD68BCB 0.2 (1/4) 1.4 1.1 0.9
VFD68BDC 0.4 (1/2) 2.5 2.1 1.7
VFD68BFD 0.75 (1) 4.2 3.5 2.9
VFD68BGG 1.5 (2) 7.0 5.9 4.9
VFD68BHG 2.2 (3) 10.0 8.5 7.0
VFD68BJK 3.7 (5) 16.5 14.0 11.5
VFD68BKL 5.5 (7-1/2) 23.8 20.2 16.6
VFD68BLL 7.5 (10) 31.8 27.0 22.2
VFD68BMP 11 (15) 45.0 38.2 31.5
VFD68BNP 15 (20) 58.0 49.3 40.6
VFD68
x = Measurement Position
5 cm
(
2 in.)
5 cm
(2 in.)
5 cm
(2 in.)
x
x
x
FIG:temp_loc_diag

VFD68 Variable Frequency Drives
10
Table 5: Maximum Current Output Derating above 50°C by VFD68Cxx Drive Model
VFD68Bxx Models Rated Capacity
kW (HP) Maximum Output Current at 50°C
(Amperes)
Maximum Output
Current at 60°C
(Amperes)
Maximum Output
Current at 70°C
(Amperes)
VFD68CDF 0.4 (1/2) 1.2 1.0 0.8
VFD68CFF 0.75 (1) 2.2 1.8 1.5
VFD68CGG 1.5 (2) 3.6 3.0 2.5
VFD68CHH 2.2 (3) 5.0 4.2 3.5
VFD68CJJ 3.7 (5) 8.0 6.8 5.6
VFD68CKL 5.5 (7-1/2) 12.0 10.2 8.4
VFD68CLL 7.5 (10) 16.0 13.6 11.2
VFD68CMP 11 (15) 23.0 19.6 16.1
VFD68CNP 15 (20) 29.5 25.0 20.6
Table 6: Maximum Current Output Derating above 50°C by VFD68Dxx Drive Model
VFD68Dxx Models Rated Capacity
kW (HP) Maximum Output Current at 50°C
(Amperes)
Maximum Output
Current at 60°C
(Amperes)
Maximum Output
Current at 70°C
(Amperes)
VFD68DFM 0.75 (1) 1.7 1.4 1.1
VFD68DGM 1.5 (2) 2.7 2.3 1.8
VFD68DHM 2.2 (3) 4.0 3.4 2.8
VFD68DJN 3.7 (5) 6.1 5.1 4.2
VFD68DKN 5.5 (7.5) 9.0 7.6 6.3
VFD68DLN 7.5 (10) 12.0 10.2 8.4
Figure 2: VFD68Bxx, VFD68Cxx, and VFD68Dxx Maximum Current Output Derating above 50°C


VFD68 Variable Frequency Drives
11
Dimensions for VFD68Bxx and VFD68Cxx Drives
Table 7: Three-Phase 230 VAC Models, mm (in.)
VFD Model HH1 WW1 D
VFD68BBB 128 (5.04) 118 (4.65) 68 (2.68) 56 (2.20) 80.5 (3.17)
VFD68BCB
VFD68BDC 112.5 (4.43)
VFD68BFD 132.5 (5.22)
VFD68BGG 108 (4.25) 96 (3.78) 135.5 (5.34)
VFD68BHG
VFD68BJK 170 (6.69) 158 (6.22) 142.5 (5.61)
VFD68BKL 150 (5.91) 138 (5.43) 220 (8.66) 208 (8.19) 155 (6.10)
VFD68BLL
VFD68BMP 260 (10.23) 244 (9.61) 220 (8.66) 195 (7.68) 190 (7.48)
VFD68BNP
Table 8: Three-Phase 460 VAC Models, mm (in.)
VFD Model HH1 WW1 D
VFD68CDF 128 (5.04) 118 (4.65) 108 (4.25) 96 (3.78) 129.5 (5.10)
VFD68CFF
VFD68CGG 135.5 (5.34)
VFD68CHH 155.5 (6.12)
VFD68CJJ 165.5 (6.52)
VFD68CKL 150 (5.91 138 (5.43) 220 (8.66) 208 (8.19) 155 (6.10)
VFD68CLL
VFD68CMP 260 (10.23) 244 (9.61) 220 (8.66) 195 (7.68) 190 (7.48)
VFD68CNP
Figure 3: Dimensions for VFD68 Drives, 230–460 VAC Models

VFD68 Variable Frequency Drives
12
Dimensions for VFD68Dxx Drives
Table 9: Dimensions for VFD68Dxx Drives, mm (in.)
VFD Model H H1 W W1 D
VFD68DFM 150 (5-15/16) 138 (5-7/16) 140 (5-1/2) 128 (5-1/16) 136 (5-3/8)
VFD68DGM
VFD68DHM
VFD68DJN 228 (8-11/16) 208 (8-3/16) 148 (5-13/16)
VFD68DKN
VFD68DLN
Figure 4: Dimensions for VFD68Dxx Drives, mm (in.)

VFD68 Variable Frequency Drives
13
Mounting
Mounting the VFD68Bxx and VFD68Cxx Drives
1. Loosen the screws on the front cover and remove the cover (Figure 5).
2. Remove the high-voltage wiring cover at the bottom of the VFD68 drive (Figure 6).
Figure 5: Loosen the Cover Screws and Remove the Front Cover
Cover
Screws
Cover
Screw
1)
1) 2)
2)
Cover
Latch
FIG:cvr_rmvl
Figure 6: Remove the High-Voltage Wiring Cover
Guide
Guide
Wiring
Cover
Guide
Guide
Wiring
Cover
!
Warning: Risk of Electric Shock
FIG:RMV_CVR

VFD68 Variable Frequency Drives
14
Mount the VFD vertically (Figure 7) in an acceptable NEMA-rated enclosure on a non-flammable surface.
When you drill mounting holes and mount the VFD, ensure that you do not allow metal chips or other material
to enter the VFD housing.
See Figure 8 and Table 10 for mounting space requirements.
Table 10: Required Clearance
Dimension 3.7 kW (5 HP) or Less 5.5–7.5 kW (7-1/2–10 HP)
A100 mm (4 in.) or more 100 mm (4 in.) or more
B10 mm (7/16 in.) or more 50 mm (2 in.) or more
C
Figure 7: Mount the VFD68 Drive
2 to 10 HP, 230 VAC
1/2 to 10 HP, 460 VAC
1/8 to 1 HP, 230 VAC
Front cover
Wiring cover
Front cover
Wiring cover
FIG:VFD68_instll
Figure 8: Required Clearance for Mounting Inside an Enclosure
5.5 to 7.5 kW (7-1/2 to 10 HP)
FIG:clrnc_rqrd
Side
VFD
3.7 kW (5 HP) or Less
C
A
A
Front
VFD VFD
BB B
AA
AA
Side
Front
VFD VFD VFD
AAA
AAA
BBBC

VFD68 Variable Frequency Drives
15
Mounting the VFD68Dxx Drives
1. To remove the front cover, push down on the hooks at Position A and Position B and pull the front cover
away from the VFD68 drive, using the hooks at Position C as supporting points (Figure 9).
2. Remove the high-voltage wiring cover at the bottom of the VFD68 drive by pulling in the direction of
Arrow A (Figure 10).
Mount the VFD vertically in an acceptable NEMA-rated enclosure on a non-flammable surface. When you drill
the mounting holes and mount the VFD, ensure that you do not allow metal chips or other material to enter the
VFD housing.
Figure 9: Release the Hooks and Remove the Front Cover
Figure 10: Remove the High-Voltage Wiring Cover
Wiring Hole

VFD68 Variable Frequency Drives
16
See Figure 11 and Table 11 for mounting space requirements.
Wiring
Table 11: Required Clearance
Dimension 3.7 kW (5 HP) or Less 5.5 to 7.5 kW(7-1/2 to 10 HP)
A100 mm (4 in.) or more 100 mm (4 in.) or more
B10 mm (7/16 in.) or more 50 mm (2 in.) or more
C
!
WARNING: Risk of Electric Shock.
Disconnect the power supply before making electrical connections. Contact with components
carrying hazardous voltage can cause electric shock and may result in severe personal injury or
death.
AVERTISSEMENT: Risque de décharge électrique.
Débrancher l'alimentation avant de réaliser tout branchement électrique. Tout contact avec des
composants porteurs de tensions dangereuses risque d'entraîner une décharge électrique et de
provoquer des blessures graves, voire mortelles.
!
WARNING: Risk of Electric Shock.
Do not touch any exposed metal parts with anything other than properly insulated tools or insulated
probes of the digital voltage meter. Failure to use properly insulated tools and probes may result in
severe personal injury or death.
AVERTISSEMENT: Risque de décharge électrique.
Ne jamais toucher une partie métallique exposée avec tout élément autre que des outils
correctement isolés ou les sondes isolées du voltmètre numérique. L'utilisation d'outils et de sondes
incorrectement isolés risque de provoquer des blessures graves, voire mortelles.
Figure 11: Required Clearance for Mounting Inside an Enclosure
5.5 to 7.5 kW (7-1/2 to 10 HP)
FIG:clrnc_rqrd
Side
VFD
3.7 kW (5 HP) or Less
C
A
A
Front
VFD VFD
BB B
AA
AA
Side
Front
VFD VFD VFD
AAA
AAA
BBBC

VFD68 Variable Frequency Drives
17
!
WARNING: Risk of Electric Shock.
To avoid possible electric shock, wait at least 10 minutes after the AC supply power has been
disconnected from the VFD68 Drive before servicing the device. The VFD68 Drive remains
electrically charged for a period of time after power is removed. Failure to wait until the VFD68 Drive
fully discharges could cause electric shock, personal injury, or death.
AVERTISSEMENT: Risque de décharge électrique.
Afin d'éviter tout risque de décharge électrique, attendre au moins 10 minutes après la déconnexion
de l'alimentation CA du VFD68 Drive pour intervenir sur l'appareil. Le VFD68 Drive reste chargé
électriquement pendant un certain temps après la coupure de son alimentation. Le non-respect du
délai de décharge électrique complète du VFD68 Drive peut entraîner une décharge électrique
provoquant des blessures graves, voire mortelles.
!
CAUTION: Risk of Property Damage.
Do not apply power to the system before checking all wiring connections. Short circuited or
improperly connected wires may result in permanent damage to the equipment.
MISE EN GARDE: Risque de dégâts matériels.
Ne pas mettre le système sous tension avant d'avoir vérifié tous les raccords de câblage. Des fils
formant un court-circuit ou connectés de façon incorrecte risquent d'endommager irrémédiablement
l'équipement.
!
CAUTION: Risk of Property Damage.
Do not run low-voltage cable in the same conduit or wiring troughs with high-voltage wires. Running
low-and high-voltage wires in the same conduit or wiring troughs may damage the equipment or
cause system malfunction.
MISE EN GARDE: Risque de dégâts matériels.
Ne pas faire courir un câble basse tension dans les mêmes gaines ou goulottes électriques que des
câbles haute tension. L'installation de fils basse tension et haute tension dans les mêmes gaines ou
goulottes électriques risque d'endommager l'équipement ou de provoquer des dysfonctionnements
du système.
IMPORTANT: Use copper conductors only. Make all wiring in accordance with local, national, and regional
regulations.
IMPORTANT: Do not exceed the VFD68 drive's electrical ratings. Exceeding the drive's electrical ratings
can result in permanent damage to the drive and void any warranty.
IMPORTANT: Run all low-voltage wiring and cables separate from all high-voltage wiring. Shielded cable is
strongly recommended for input (sensor) and analog output cables that are exposed to high electromagnetic or
radio frequency noise.
IMPORTANT: Electrostatic discharge can damage VFD68 drives. Use proper electrostatic discharge (ESD)
precautions during installation and servicing to avoid damaging VFD68 drives.
IMPORTANT: Do not connect supply power to the VFD68 drive before finishing wiring and checking all
wiring connections. Short circuits or improperly connected wires can result in damage to the drive and void any
warranty.

VFD68 Variable Frequency Drives
18
Precautions
Before you apply power to the VFD68 drive and controlled motor, always recheck the following items:
• Connect the VFD only to three-phase induction motors. Connecting the VFD to other electrical equipment
may cause damage.
• Applying power to the output terminals (U, V, W) of the VFD will damage the VFD. Never connect supply
power to the drive’s output terminals.
• If you wire multiple motors to the VFD output, run separate wires to each motor. Do not use daisy-chain
wiring.
• Do not install a power factor correction capacitor, surge suppressor, or capacitor type filter on the VFD
output side. These devices can cause the VFD to trip, or they can damage the capacitor and surge
suppressor.
• A high voltage charge remains in the VFD electronic components for a short time after the power is
switched off.
Wait at least 10 minutes after the power supply has been switched off to allow the electric charge and heat
to dissipate. Using a voltmeter, make sure that the voltage across the main circuit terminals P/+ and N/- of
the VFD is no more than 30 VDC.
• A short circuit or earth (ground) fault on the VFD output side can damage the VFD.
- Check the insulation resistance of the circuit before you operate the VFD; repeated short circuits may
damage the VFD. These short circuits may be caused by peripheral circuit inadequacy, an earth
(ground) fault due to wiring inadequacy, or reduced motor insulation resistance.
- Check the ground (to-earth) insulation and phase-to-phase insulation of the VFD output side before
applying power.
Carefully check the motor insulation resistance, especially when the VFD is used with an old motor or
a motor located in unfavorable conditions.
• Do not exceed the permissible voltage to the VFD I/O signal circuits.
Application of a voltage higher than the permissible voltage to the VFD I/O signal circuits, or applying
voltage of opposite polarity, may damage the I/O devices.
• Do not short circuit the +VDC excitation voltage outputs (terminals 10 and PC) to common
(terminals: 5 and SD). Shorting the excitation voltage outputs to common may damage the VFD.
• Prevent VFD-generated EMI from causing functional problems.
- Do not run the low-voltage signal cables and the high-voltage power cables in parallel with each other,
and do not bundle them together.
- Run low-voltage signal cables as far away as possible from high-voltage power cables.
- Use shielded cables for the low-voltage signal cables. Connect the sensor cable shield at only one
point and that one point is the same terminal as the sensor's common wire.
- Install a ferrite core on the signal cable (for example, ZCAT3035-1330 TDK).

VFD68 Variable Frequency Drives
19
Terminal Screw Torque Specifications
Tighten the terminal screw to the specified torque. Overtightening the terminal screws may damage the
terminal blocks and screw threads. Loose terminal screw connections can result in a short circuit or
malfunction.
Branch Circuit Protection
Integral solid-state short circuit protection does not provide branch circuit protection. The installer must provide
branch circuit protection in accordance with the National Electrical Code for the U.S. or the Canadian Electrical
Code for Canada and any additional codes.
As specified, UL Class T fuses (or any faster acting fuse with the appropriate rating) or Listed UL 489 Molded
Case Circuit Breaker (MCCB) must be employed in accordance with Table 15 and Table 16.
Table 12: Torque Specifications for VFD66Bxx Drives
Rated Capacity, kW (HP) Terminal Screw Size1
1. The terminal screw size indicates the terminal size for R/L1, S/L2, T/L3, U, V, W, PR, P/+, N/-, P1, and earthing
(grounding). The terminal screw size for earthing (grounding) appears in parenthesis if it is a different size.
Tightening Torque, N•m (lb•in.)
0.1–0.75 (1/8–1) M3.5 1.2 (10.6)
1.5–3.7 (2–5) M4 1.5 (13.3)
5.5–11 (7.5–15) M5 2.5 (22.2)
15 (20) M6 (M5) 4.4 (39)
Table 13: Torque Specifications for VFD68Cxx Drives
Rated Capacity, kW (HP) Terminal Screw Size1
1. The terminal screw size indicates the terminal size for R/L1, S/L2, T/L3, U, V, W, PR, P/+, N/-, P1, and earthing
(grounding). The terminal screw size for earthing (grounding) appears in parenthesis if it is a different size.
Tightening Torque, N•m (lb•in.)
0.4–11 (1/2–15) M4 1.5 (13.3)
15 (20) M5 2.5 (22)
Table 14: Torque Specifications for VFD68Dxx Drives
Rated Capacity, kW (HP) Terminal Screw Size1
1. The terminal screw size indicates the terminal size for R/L1, S/L2, T/L3, U, V, W, PR, P/+, N/-, P1 and a screw for
earthing (grounding).
Tightening Torque, N•m
0.75–7.5 (1–10) M4 1
Table 15: VFD68Bxx Drives Electrical Ratings
230 VAC kW (HP)
0.1
(1/8) 0.2 (1/4) 0.4 (1/2) 0.75 (1) 1.5 (2) 2.2 (3) 3.7 (5) 5.5 (7.5) 7.5 (10) 11 (15) 15 (20)
Rated fuse voltage (V) 240 V or more
Fuse maximum
allowable rating (A)
(without power factor
improving reactor)1
1. Maximum allowable rating by US National Electrical Code. Exact size must be chosen for each installation.
15 15 15 20 30 40 60 70 80 150 175
Molded case circuit
breaker (MCCB)
Maximum allowable
rating (A)1
15 15 15 15 20 25 40 60 80 110 150

VFD68 Variable Frequency Drives
20
Short Circuit Ratings
The VFD68 drives meet the requirements for their respective rating categories (Table 18).
High-Voltage Wire Size and Maximum Wire Length
Use UL Listed copper stranded wire with insulation rated at 75°C (167°F) for wiring the high-voltage supply to
the drive (R/L1, S/L2, T/L3) and wiring the high-voltage drive output (U, V, W) to the motor.
Selecting the Correct VFD68 Drive for Your Fan Motor
1. Determine the maximum current consumption from the motor ratings label.
2. Select the appropriate table for your motor’s current type.
• For 230 VAC motors, see Table 19.
• For 460 VAC motors, see Table 20.
• For 575 VAC motors, see Table 21.
Table 16: VFD68Cxx Electrical Ratings
460 VAC kW (HP)
0.4
(1/2) 0.75 (1) 1.5 (2) 2.2 (3) 3.7 (5) 5.5 (7.5) 7.5 (10) 11 (15) 15 (20)
Rated fuse voltage (V) 480 V or more
Fuse maximum allowable rating (A)
(without power factor improving
reactor)1
6 1015203040708090
Molded case circuit breaker
(MCCB) Maximum allowable rating
(A)1
15 15 15 15 20 30 40 50 70
1. Maximum allowable rating by US National Electrical Code. Exact size must be chosen for each installation.
Table 17: VFD68Dxx Drives Electrical Ratings
575 VAC kW (HP)
0.75 (1) 1.5 (2) 2.2 (3) 3.7 (5) 5.5 (7.5) 7.5 (10)
Rated fuse voltage (V) 575 V or more
Fuse maximum allowable rating (A)
(without power factor improving
reactor)1
6 A 10 A 15 A 20 A 30 A 40 A
Molded case circuit breaker
(MCCB) maximum allowable rating
(A)1
5 A 10 A 15 A 20 A 30 A 30 A
1. Maximum allowable rating by US National Electrical Code. Exact size must be chosen for each installation.
Table 18: VFD68 Drives Short Circuit Ratings
Rating Category Suitable for use in a circuit capable of delivering not more than
VFD68Bxx Drives (230 VAC Class) 100 kA rms symmetrical amperes, 264 V maximum
VFD68Cxx Drives (460 VAC Class) 100 kA rms symmetrical amperes, 528 V maximum
VFD68Dxx Drives (575 VAC Class) 100 kA rms symmetrical amperes, 600 V maximum
IMPORTANT: Use copper conductors only. Make all wiring in accordance with local, national, and
regional regulations.