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Input Power and Control Wiring
Wire Sizing
Care should be taken to see that all interconnection wiring
and ground wiring is sized and installed in conformance
with the National Electrical Code (NEC), the National Fire
Protection Association (NFPA), or the Canadian Electrical
Code (CEC) as applicable, and other appropriate local
codes. Refer to controller and motor nameplates for
electrical data.
WARNING
Hazardous Voltage/Improper Grounding!
Hazardous voltage due to improperly grounded
electrical components could result in death or serious
injury. The motor controller has a chassis ground that
must be connected to an earth ground.
Grounding the Cabinet
Note: Follow Applicable Codes! The user is responsible
for conforming to all applicable, local, national, and
international codes. Failure to observe this
precaution could result in damage to, or
destruction of, the equipment.
Use the following steps to ground the AFDG (remote-
mounted) cabinet:
1. Open the left-hand enclosure door of the drive. The
grounding stud is located just above and to the left of
the breaker.
2. Run a suitable earth ground (completed by field) to the
cabinet's ground connection point. The grounding lug
is capable of accepting up to 4/0 AWG wire. Tighten the
ground connections to 375 in·lb (42.4 N·m).
Note: The AFDU (unit-mounted) ships grounded to the
chiller.
WARNING
Proper Field Wiring and Grounding
Required!
Failure to follow code could result in death or serious
injury. All field wiring MUST be performed by qualified
personnel. Improperly installed and grounded field
wiring poses FIRE and ELECTROCUTION hazards. To
avoid these hazards, you MUST follow requirements for
field wiring installation and grounding as described in
NEC and your local/state electrical codes.
NOTICE
Equipment Damage!
Failure to follow instructions below could result in
damage to equipment. Do not route signal and control
wiring with power wiring in the same conduit. This can
interfere with drive operation.
20
Table 4.
AFDG (remote-mounted) component list (see
Figure 8, p. 21
2A1
Starter module, located on the front door, behind the small
panel
2A2
Adaptive frequency drive
2A3
Starter power supply
2A10
Starter drive fault input, located on the front door, behind
the small panel
2A11
Speed signal output, located on the front door, behind the
small panel
2F1,2,3
Control power primary fusing
2F4
Control power secondary fusing
2F22
Adaptive frequency drive supplemental fusing
2K1
Start contactor
2K2
Run contactor
2K11
Oil pump interlock relay
2Q1
Line potential main circuit breaker
2T1,2,3
Line current transformer
2T5
Control power transformer
2X1,2
Starter panel terminal blocks
for drive component layout)
AFDG-SVU01L-EN
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