Ice-Irb Relay Board Quick Reference - MCi iControl User Manual

Troubleshooting

ICE-IRB Relay Board Quick Reference

The Relay Board is an integral part of the iBox. The three system relays mounted on the board
are socketed and can be separately replaced. There are also six fuses protecting the 110VDC and
120VAC iBox output buses that may be replaced. Electrically, the Relay Board is between the
iBox processor and the motor and brake field modules inside the iPower Box. The SB and 3 ter-
minals are accessible through the front of the iBox and bypass the safety string when "jump-
ered" together. If a jumper is placed, it "times out" automatically after 15 minutes.
Figure 6.7 ICE-IRB Relay Board
6-100 Manual # 42-02-2222
Testpoints:
3.3V, 5.0V, 15V
Power Bus Fuses
250VAC,
Bussman MDQ or
Littelfuse Type 313
Motor Driver Relay
Brake Driver Relay
Safety Relay
MCE PN# 27-01-0000
(3 places)
TM Triac