Troubleshooting - Miller Electric A.B.B. Robot Interface Gas Control Hub And Spindle Owner's Manual

5-5. Troubleshooting

Trouble
No arc voltage control.
Robot moves when welding wire is
stuck.
Wire speed (IPM) meter goes to zero.
Unit does not operate.
No meter display.
No wire feed.
Wire feeds at maximum only.
Y Disconnect power before troubleshooting
Check and secure output control connections (see Section 2-4).
Check and secure arc sensing connections (see Section 2-7).
Check robot command voltage at Isolation Board PC5. Command voltage should be 0-10 vdc between
sockets Y (common) and Z at RC17.
Check robot peak command current at Isolation Board PC5. Peak command current should be 0-10 vdc
between sockets R and S (common) at RC17.
Check wire stick connection from robot for leads connected to sockets H and N at RC17.
Check robot command voltage at Motor Board PC2. Signal should be 0-10 vdc between pins K and B
(common) at RC5.
Have nearest Factory Factory Authorized Service Station check motor board PC2.
Check and replace main fuse F1 (see Section 5-3).
Have nearest Factory Factory Authorized Service Station check display board PC4.
Check motor overload circuit breaker CB1 and reset (see Section 5-3).
Check input signal from robot to Motor Board PC2. Signal should be 0-10 vdc between pins K and B (com-
mon) on RC5.
Check and replace relay CR1 if necessary.
Have nearest Factory Factory Authorized Service Station check display board PC2.
Have nearest Factory Factory Authorized Service Station check tach board PC7 (see motor/drive
assembly Owner's Manual).
Remedy
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