Details and Remedies for Fault Trips
Fault trip memory..... The cause of the trip can be saved in parameter n12 to n15.
The details on the latest trip and the three prior trips are saved even if the power is turned
OFF. ( The details of the shipment inspection are saved when the unit is shipped.)
Display
SC1
䊶
Instantaneous overcurrent during
acceleration or abnormal heating
of heat sink fins
䊶
Check for an output short-circuit or ground faul
䊶
Check the ambient temperature
䊶
Increase the acceleration time
SC2
䊶
Instantaneous overcurrent during
constant speed or abnormal heating
of heat sink fins
䊶
Check for output short-circuit or ground fault
䊶
Check ambient temperature
䊶
Eliminate excessive changes in load
SC3
䊶
Instantaneous overcurrent during
deceleration or abnormal heating
of heat sink fins
䊶
Check for output short-circuit or ground fault
䊶
Check ambient temperature
䊶
Increase the deceleration time
OC1
䊶
Overcurrent during acceleration
䊶
Check for an open output phase and
Eliminate sudden changes in load
䊶
Increase the acceleration and deceleration times
䊶
Adjust the torque boost level
䊶
Check the restart in inertia
䊶
Do not switch the electromagnetic
contactor at the load side
OC2
䊶
Overcurrent during constant speed
OC3
䊶
Overcurrent during deceleration
OU1
䊶
Excessive internal DC voltage during
acceleration
䊶
Increase the acceleration time
OU2
䊶
Excessive internal DC voltage during
constant speed
OU3
䊶
Excessive internal DC voltage during
deceleration
䊶
Increase the deceleration time
䊶
Eliminate excessive changes in load
LU
䊶
Power supply voltage drops to less
than 85% of rating
䊶
Measure the power supply voltage and Check
output open-phase
䊶
Consider using the instantaneous power
failure restart function
OL
䊶
An output current exceeding 125%
of the electronic thermal setting current
or 140% or more of the inverter rated
current (3.6A) occurs for more than 1 minute.
䊶
Check the electronic thermal setting current
䊶
Check and adjust the torque boost level
䊶
Reduce the load
AU
䊶
The abnormal stop command was sent.
䊶
Check the communication processing of controller
OP
䊶
The power supply was applied while
the run signal was ON
䊶
The run signal was turned ON while
setting data in the stopped mode, and
the mode was returned to the operation
mode with the MODE button
䊶
Timeover was detected
䊶
The communication connector was
removed during the operation
䊶
Check the start mode (parameter P23)
䊶
Check the run signal when the data is being set.
䊶
Check the communication setting and wirings
䊶
Reduce the noise around the inverter
Details and cause of fault
Remedies
89
Содержание AAD03011
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