Details And Remedies For Fault Trips; Fault Trip Memory - Panasonic AAD03011 Instruction Manual

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