Rockwell Automation 2361 Armature Pulse Transformer Board Replacement - Manual (Page 3)

Armature-Pulse Transformer Board Replacement (for 1250, 1650, and 3000A 1395 DC Drives) 3
Preliminary Steps Before replacing the armature-pulse transformer board, shut off
the drive power, wait five minutes for voltage to discharge, open
the bridge bay door, and remove the Lexan™ shielding.
Removing an Armature-Pulse
Transformer Board 1. Using a voltmeter, test the voltage across the three phases,
then across the armature-pulse transformer board terminals.
2. Disconnect the connector at J2 (red and white SCR leads).
3. Disconnect the connector at J1 (gate interface wires).
4. Push in the tabs of the nylon mounting posts and remove the
board.
!
ATTENTION: If there is any voltage present,
remove the source of the voltage and check for
voltages again before proceeding to the next step.
J1
J2
1
2
J1
J2
3