VFD68 Variable Frequency Drives Product Bulletin 5
Selecting a Motor
Required Motor Specifications
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, 50/60 Hz
• 460 VAC, 50/60 Hz
• 575 VAC, 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.
Multiple Motors
A VFD68 drive can control multiple motors wired in
parallel; however, the sum of the Full Load Amperes
(FLA) ratings for the motors must not exceed the
maximum output current rating of the VFD68 drive,
including any de-rating due to altitude. Refer to the
VFD68 Variable Frequency Drive Technical Bulletin
(Part No. 24-7664-3051) for de-rating information.
If three-phase power is not available as supply power
for the VFD68 drive, refer to the VFD68 Variable
Frequency Drive Technical Bulletin
(Part No. 24-7664-3051).
Ordering Information
Use Figure 4 and Table 4 to select the desired model of
VFD68 Drive. For example, a VFD68BGG would be
rated for 230 VAC ±10% and 2 horsepower. See
Table 5 through Table 7 for available production
models.
.
IMPORTANT: When selecting the motor, do not
exceed the maximum output current rating of the
VFD68 drive.
IMPORTANT: Do not control both single-phase
and three-phase motors with the same VFD68 drive.
Figure 4: VFD68 Drive Model
VFD68
-
2C
Voltage
Kilowatts
(Horsepower)
Dimensions
H x W x D
FIG:VFD68_slctn
Table 4: VFD68 Drive Model Information
Voltage kW (Horsepower) Dimensions, H x W x D, mm (in.)
B
200
–240 VAC, 50/60 Hz
0.1 (1/8) 128 x 68 x 81 (5 x 2-11/16 x 3-3/16)
C
400–480 VAC, 50/60 Hz
0.2 (1/4) 128 x 68 x 113 (5 x 2-11/16 x 4-7/16)
D 575 VAC, 50 Hz 0.4 (1/2) 128 x 68 x 133 (5 x 2-11/16 x 5-1/4)
F 0.75 (1) 128 x 108 x 130 (5 x 4-1/4 x 5-1/8)
G 1.5 (2) 128 x 108 x 136 (5 x 4-1/4 x 5-5/16)
H 2.2 (3) 128 x 108 x 156 (5 x 4-1/4 x 6-1/8)
J 3.7 (5) 128 x 108 x 166 (5 x 4-1/4 x 6-1/2)
K 5.5 (7-1/2) 128 x 170 x 142 (5 x 6-11/16 x 5-5/8)
L 7.5 (10) 150 x 220 x 155 (5-15/16 x 8-11/16 x 6-1/8)
M 11 (15) 150 x 140 x 136 (5-15/16 x 5-1/2 x 5-5/16)
N 15 (20) 150 x 220 x 148 (5-15/16 x 8-11/16 x 5-13/16)
P 260 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.
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