Operating Instructions

Fault Codes
Digital Keypad
334 | 443
Cause
Corrective Actions
Any of the motor parameters in parameter
group 5 may be incorrect
Check the motor parameters
Overload
Decrease the load
Any of the setting value of Pr.07-29, 07-
30, and 10-29 is improper
Check the setting of oSL protection function related parameters
ID*
Display on LCD Keypad
Fault Name
Fault Descriptions
72
STO Loss 1 (STL1)
STO1–SCM1 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 short circuit lines are not
connected
Re-connect the short circuit line
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
76
STO (STo)
Safety Torque Off function active
Action and Reset
Action level
Hardware detection
Action time
Immediately act
Fault treatment parameter
N/A
Reset method
Auto
When Pr.06-44=1 and after STo error is cleared, it automatically resets.
Manual
When Pr.06-44=0 and after STo error is cleared, reset it manually.
Reset condition
Reset only after the STo error is cleared.
Record
Yes
Cause
Corrective Actions
The switch action of STO1/SCM1 and
STO2/SCM2 (OPEN)
Reset the switch (ON) and cycle the power
ID*
Display on LCD Keypad
Fault Name
Fault Descriptions
77
STO Loss 2 (STL2)
STO2–SCM2 internal loop detection error
Action and Reset
Action level
Hardware detection