Operating Instructions

Fault Codes
Digital Keypad
335 | 443
Action time
Immediately act
Fault treatment parameter
N/A
Reset method
Hardware failure and cannot reset. Cycle the power.
Reset condition
N/A
Record
Yes
Cause
Corrective Actions
STO2 and SCM2 short circuit lines are not
connected
Re-connect the short circuit lines
Hardware failure
● Ensure all the wiring is correct.
● If STL1 fault still exists after cycling the power, return to the factory for repair.
ID*
Display on LCD Keypad
Fault Name
Fault Descriptions
78
STO Loss 3 (STL3)
STO1–SCM1 and STO2–SCM2 internal loop detection error
Action and Reset
Action level
Hardware detection
Action time
Immediately act
Fault treatment parameter
N/A
Reset method
Hardware failure and cannot reset. Cycle the power.
Reset condition
N/A
Record
Yes
Cause
Corrective Actions
STO1 and SCM1, or STO2 and SCM2
short circuit lines are not connected
Reconnect the short circuit lines
Hardware failure
● Ensure all the wiring is correct.
● If STL1 fault still exists after cycling the power, return to the factory for repair.
ID*
Display on LCD Keypad
Fault Name
Fault Descriptions
79
U-phase over-current
before run (Aoc)
U-phase short circuit detected when the output wiring detection is
performed before the drive runs.
Action and Reset
Action level
300% of the rated current
Action time
Immediately act
Fault treatment parameter
N/A
Reset method
Manual reset
Reset condition
Reset in five seconds after the fault clears
Record
Yes
Cause
Corrective Actions
Incorrect wiring for the motor
Check if the motor’s internal wiring and the UVW wiring of the drive output terminal are correct.
Short-circuit at motor output due to poor
insulation wiring
Check the motor cable and remove causes of the short circuits, or replace the cable before turning
on the power.