![](/images/new-backgrounds/1044771/447715x1.webp)
Opening the VFD Access Door
WARNING
Before removing the drive enclosure, open access door and verify that the DC bus voltage has dropped to zero by checking the terminals behind the access door. Failure to observe this precaution could result in severe bodily injury or loss of life.
1.Using recommended screwdriver = 6.4 mm (0.25 in.) flat or T20 star, open access door. See Fig. 2.
2.Check to be sure that the voltage between DC+ and DC- and from each DC terminal to the chassis is zero before proceeding. See Fig. 3.
Drive Assembly Catalog Number — See Fig. 4 for an example Catalog Number.
Components and Physical Data — The Allen- Bradley PF755 Frame 6 drive is used for the
The
See Fig. 7 for the dimensions of Frames 6 and 7.
Fig. 2 — Opening Access Door
A19-1831
1 L1 L2 L3 | I |
LOCKOUT/TAGOUT
O
2 | 0V |
|
DC BUS TEST | DC+ DC– |
TERMINALS |
|
LOCATED INSIDE |
|
ACCESS DOOR |
|
0V | MULTIMETER |
A19-1842
21P 1 0248
21P PF755 VFD
Voltage Rating
1– 460 to 480 v, 60 Hz
2– 380 to 415 v, 50 Hz
3 – 380 to 400 v, 60 Hz 4– 401 to 439 v, 60 Hz
PF755 Full Load Amp Rating (Maximum Continuous Amps)* 0248 – 248 0361 – 361
0477 – 477
*For Carrier applications, maximum continuous amp ratings are 230, 335, and 445.
Fig. 3 — Check DC Bus Terminals
A19-1814
3 - 3 - 0 - 0 - C
Customer
C– Carrier
Meter Package
0 – No Meter Package
1– Analog Meter Package
Input Reactor
0 – No Input Reactor
1– 3% Input Line Reactor
Disconnect/Breaker Options
3 – 65 KAIC Capacity Breaker
4– 100 KAIC Capacity Breaker
Drive Assembly
3 – Unit Mount NEMA 1 Liquid Cooled
Fig. 4 — Drive Assembly Catalog Number Nomenclature
3