Figure 19.
1000 hp AFD motor connection detail
Input Power and Control Wiring
AFDK-SVU01C-EN
37
Installing Remote-Mounted Output Wiring
WARNING
Hazardous Voltage w/Capacitors!
Disconnect all electric power, including remote
disconnects and discharge all motor start/run
capacitors before servicing. Follow proper lockout/
tagout procedures to ensure the power cannot be
inadvertently energized. For variable frequency drives
or other energy storing components provided by Trane
or others, refer to the appropriate manufacturer’s
literature for allowable waiting periods for discharge of
capacitors. Verify with an appropriate voltmeter that all
capacitors have discharged. Failure to disconnect
power and discharge capacitors before servicing could
result in death or serious injury.
For additional information regarding the safe discharge of
capacitors, see PROD-SVB06A-EN
NOTICE
Load Side Wiring!
The electrical wiring from the drive output to the motor
must be routed through the magnetic cores. The cores
are used to protect the motor bearings. Failure to route
the wires through the cores could result in bearing
damage.
1. Turn off, lock out, and tag the input power to the drive.
2. Remove the output wiring access panel from the top
right of the drive enclosure. Refer to
,
the exact location and dimensions of the output wiring
access panels.
NOTICE
Equipment Failure!
Do not cut holes in Adaptive Frequency™ Drive
enclosure. Debris falling inside of Adaptive Frequency
Drive could cause failure of electronic components.
Failure to follow this precaution could result in
damaged equipment.
3. Once removed, drill the wire routing holes in the panel.
These wire routing holes are the only entry points for
input power wiring into the cabinet.
4. Install the appropriate conduit hubs.
5. Reinstall the cabinet’s top panel.
6. Install shorting busbars on compressor motor
terminals; refer to
“Installing Shorting Busbars,” p. 35
.
7. Connect the motor power leads to the AFD terminals U,
V, and W.
describes the cable ranges of the
output lugs on the drive. Motor leads must be routed
through the magnetic choke provided. The choke may
be reinstalled in the vertical position for easier wire
installation.
Output power wiring should be only copper
conductors and should be sized according to
applicable codes.
Important:
Power connections should be re-torqued
after the first three to six months of
operation and on an annual basis thereafter.
