Rockwell Automation 1336T Master/Slave Parallel AC Drv - Manual (Page 16)

1336 FORCE-5.19 – August, 2000
2-4 Mounting and Wiring Your 1336 FORCE Master/Slave Drive
User Enables
The hardware user enables (jumper J8 on the PLC Comm Board)
must be set identically on both the Master and Slave drives. Set
jumper J8 to either 24V or 120V (depending on your application) on
both drives.
Fault Signals
The external fault signals must be interconnected between the master
and slave drives.
Motor Setup
When installing and wiring the motor, the motor connections Must be
split between the drives. The special motor supplied with a 1336T
Master/Slave drive has separate isolated windings and terminal box
connections to facilitate this split.
Ground the stator ground lead at the ground pad located in the motor
terminal box as shown in the following figure. The Reliance motor
used in this example has two tapped motor frame ground pads located
diagonally on opposite sides of the motor. Ground the motor to PE
Safety ground as required by local code.
Run a separate lead from the
PE ground on the power terminal block (TB1) of each drive to a
separate motor frame ground pad terminal point.
For additional information on grounding requirements for FORCE
drives refer to the 1336T User manual (1336 FORCE 5.12).
When using this motor, remember that both inverters must be in
phase, and both inverters must operate at all times with identical
voltage, frequency and power output. A check for continuity between
the winding sets must be made before connection to the drives. The
winding sets MUST be open (i.e. no continuity between the master
windings and the slave windings).
The phasing must be matched for both drives. This is accomplished
by running each motor winding separately from the drive using the
phase rotation routine as described in the Start-up section of this
manual.