6Ć1
6.0 INSTALLING OUTPUT POWER WIRING
This chapter provides instructions on wiring output contactors, motor overload protection, and output
wiring to the motor.
6.1 Installing Output Contactors (Optional)
Output contactors provide a positive means of disconnecting the motor from the drive. If the
application requires the use of output contactors, contact Reliance Electric for assistance.
6.2 Installing Mechanical Motor Overload Protection (Optional)
To provide the motor with overload protection, the NEC requires that a motor thermostat, internal to
the motor, be installed or an electronic thermal motor overload relay, sized to protect the motor, be
installed between the motor and the drive's output terminals.
The Motor Overload Enable parameter (P.040) can be used in place of the electronic thermal motor
overload relays in single motor applications. Note, however, that temperature measuring devices
integral to the motor are the best way to thermally protect AĆC motors under all conditions. Parameter
P.040 must be enabled to provide overload protection. Refer to the GV3000 Programming Manual
(D2Ć3339) for more information.
In multiple motor applications (volts/hertz regulation only), each motor must have its own
userĆsupplied overload protection.
6.3 Installing Output Wiring from the Drive Output Terminals to the
Motor
Use the following steps to connect the AĆC output power wiring from the drive to the motor:
Step 1. Wire the threeĆphase AĆC output power motor leads by routing them according to drive
type. Refer to figures 4.1 to 4.6. Tables 3.3 to 3.7 contain the recommended power wiring
sizes.
On 1Ć5 HP drives, route the motor leads through the bottom right opening of the drive base.
On 7.5Ć25 HP drives, route the motor leads through the bottom right opening of the drive
base.
On 25Ć60 HP drives, route the motor leads through the middle bottom opening of the drive
base.
On 60Ć100 HP drives, route the motor leads through the bottom right opening of the cover.
On 100Ć150 HP drives, route the motor leads through the three leftĆmost bottom openings
of the cover. Route the ground wire through the opening to the right of the motor leads.
CAUTION:
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.
Note that in applications using GV3000 drives (75 HP and above), induced electrical noise
may result when the motor output leads from two or more drives are run together in the
same conduit. It is recommended that separate conduit be run from each drive to the motor
it is operating.
StockCheck.com
Downloaded from StockCheck.com
