
LED Error Codes
Status LED STM
e STM drive+motor includes red and green LEDs to indicate status. When the motor is enabled, the green LED
ashes slowly. When the green LED is solid, the motor is disabled. Conditions and errors are indicated by combina-
tions of red and green “ashes” as follows:
Code Condition
solid green no alarm, motor disabled
flashing green(slow) no alarm, motor enabled
1 red, 1 green motor stall (optional encoder only)*
1 red, 2 green
move attempted while drive disabled
2 red, 1 green
ccw limit
2 red, 2 green cw limit
3 red, 1 green drive overheating*
3 red, 2 green internal voltage out of range*
4 red, 1 green power supply overvoltage*
4 red, 2 green power supply undervoltage
5 red, 1 green over current / short circuit*
6 red, 1 green open motor winding*
7 red, 1 green serial communication error
flashing green(fast)
Q Program running
*ese errors are faults and will disable the motor. ey also cause the output to activate if it is so congured.
47
STM23 Hardware Manual
920-0021F
2/14/2012
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