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Error 122
Error Message Displayed to user
E122
Condition
M3 stride position sensing error.
Cause
•
Bad cables and connectors
•
Bad ECB or motor
•
Failed limit switch(es)
Remedy
•
Check cabling and connections.
•
Do motors move?
•
No - 1) Replace ECB, 2) Replace motor.
•
Yes - Verify limit switches functional and properly positioned.
•
If motor is turning and position error is occurring there must be a problem with feedback signal or detection circuit.
•
Test - swap M2 and M3 connectors at ECB, re-power equipment, if new error 122 occurs - problem with ECB, if error 121 occurs -
problem with motor / encoder.
•
To check M3 feedback measure ECB P4 pin 6(+) to pin 5(-) as motor moves 5V should toggle up and down.
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