Rockwell Automation 8520 9/Series CNC Integration Maintenance Manual Documentation Set - Manual (Page 798)

Section 15B
Replacement Procedures
15B-42
9. MATCH JUMPERS on the new servo amplifier logic board(s) to the
settings on the board(s) being replaced. Amplifier jumper settings are
listed starting on page 13A-16.
ATTENTION: Jumper settings configure the amplifier to
match the specific application. Failure to match jumper settings
on the new servo amplifier may result in damage to the
amplifier, servomotors, or machine.
10. Turn ON power to the control and servo amplifier.
The servo amplifier power section includes the entire servo amplifier
chassis and all components mounted beneath the servo amplifier logic
board. Replacement requires removal of the servo amplifier from the
cabinet.
To replace the servo amplifier power section on a servo amplifier:
1. Turn OFF all power to the control and the servo amplifier.
ATTENTION: To guard against electrical shock hazards, never
make connections or disconnections at the ac distribution
network unless the main ac disconnect switch is open (off) and
locked.
Important: The use of a ground strap is recommended to prevent static
discharge to any of the sensitive electronic components on the servo
amplifier logic board(s).
2. Remove the servo amplifier from the cabinet as discussed earlier in
this section.
3. Carefully label and disconnect all wires and connectors to the logic
board(s).
Important: Labeling is essential since some connectors are the same size
and could be accidentally interchanged.
4. Disconnect the chassis ground wire from the logic board(s). If the
ground wire is soldered to the logic board, it will have to be
disconnected at the chassis, just to the left of TB1.
15B.26
Replacing the Power
Section on the Digital Servo
Amplifier