Rockwell Automation Liqui-Flo AC Power Modules - Manual (Page 42)

4-2 LiquiFlo AC Power Modules, Hardware Reference Version 6.4
In order to maintain a flat mounting surface and to ensure that bolt tightness
is maintained, use flat washers and split-ring lock washers under the bolt
heads. Refer to table 3.2 and figures 3.1 to 3.3 for drive mounting
dimensions. Use the following user-supplied mounting bolts and washers on
C-frame drives: 1/2”-13, UN/UNC-2A, Grade 2.
Step 7. For M/N 50LW4060, 50LR4060, 64LW4060, and 64LR4060, remove the
eyebolts and the chain between them.
For M/N 41L4060, 41LR4060, and 120L4060, remove the clevis clamps and
chain between them.
4.1.1 Verifying the Drive’s Watts Loss Rating
When mounting the drive inside of an enclosure, you should determine the watts loss
rating of the drive from table 2.1. This table lists the typical full load power loss watts
value at 2 kHz (rated carrier frequency). Ensure that the enclosure is adequately
ventilated with 0
°
to 40
°
C ambient air based on the drive’s watts loss rating.
4.2 Determining Input, Motor Output, Ground, and
Control Wire Routing for the Drive
All wiring should be installed in conformance with the applicable local, national, and
international codes (e.g., NEC/CEC). Signal wiring, control wiring, and power wiring
must be routed in separate conduits to prevent interference with drive operation. Use
grommets, when hubs are not provided, to guard against wire chafing. Figures 4.1,
4.2, and 4.3 show the wire routing, grounding terminal, and power terminal strips of
the B-frame, C-frame, and D-frame LiquiFlo drives.
Do not route more than three sets of motor leads through a single conduit. This will
minimize cross-talk that could reduce the effectiveness of noise reduction methods. If
more than three drive/motor connections per conduit are required, shielded cable
must be used. If possible, each conduit should contain only one set of motor leads.
!
ATTENTION: Do not route signal and control wiring with power wiring in
the same conduit. This can cause interference with drive operation.
Failure to observe this precaution could result in damage to, or
destruction of, the equipment.
!
ATTENTION: Unused wires in conduit must be grounded at both ends
to avoid a possible shock hazard caused by induced voltages. Also, if a
drive sharing a conduit is being serviced or installed, all drives using this
conduit should be disabled to eliminate the possible shock hazard from
cross-coupled motor leads. Failure to observe these precautions could
result in bodily injury.