Rockwell Automation Liqui-Flo AC Power Modules - Manual (Page 55)

Installing Output Power Wiring 6-1
C
HAPTER
6
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, local, national, and international codes
(e.g., NEC/CEC) may require one of the following:
• a motor thermostat be installed internal to the motor
• a mechanical 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 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 AC
motors under all conditions. Parameter P.040 must be enabled to provide overload
protection. Refer to the LiquiFlo Software Start-Up and Reference manual for more
information.
In multiple motor applications (V/Hz regulation only), each motor must have its own
user-supplied overload and branch circuit protection.