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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.
4.2.1 Replacing Conduit Plugs
The plastic plugs installed in the conduit hub of all NEMA 4x/12 and NEMA 12 drives
must be replaced with NPT connectors or hole plugs having a similar enclosure rating.
Seal all threaded connections.
4.3 Grounding the Drive
Use the following steps to ground the drive:
Step 1. Remove the drive's cover. On 200-400 HP drives, open the outer cabinet
Step 2. Run a suitable equipment grounding conductor unbroken from the drive's
Step 3. Connect a suitable grounding conductor to the motor frame, the remote
Step 4. Reattach the drive's cover. On 200-400 HP drives, close the outer cabinet
4-2
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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.
ATTENTION: The user is responsible for conforming with all applicable
local, national, and international codes. Failure to observe this precaution
!
could result in damage to, or destruction of, the equipment.
door.
ground terminal to the motor's ground terminal and then to earth ground. See
figures 4.1 to 4.7, 5.1, and 5.2.
control station (if used), and the transformer. Run each conductor unbroken
to earth ground.
When adding more than one grounding conductor wire to a single chassis
ground, twist the conductors together.
door.
GV3000/SE AC Drive Hardware Reference, Version 6.06
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