Mitsubishi FR-E520-0.1KN Instruction Manual page 159

FR-PU04 Indication
Name
Description
Check point
Corrective action
Note: 1 Resetting the inverter initializes the internal heat integrating data of the
electronic overcurrent protection.
FR-PU04 Indication
Name
Description
Check point
Corrective action
FR-PU04 Indication
Name
Description
Check point
Corrective action
Note: 2 This function is activated only when the optional brake resistor is connected.
FR-PU04 Indication
Name
Description
Check point
Corrective action
Inv. Overload
Inverter overload shut-off (electronic overcurrent protection)
(Note 1)
If a current of more than 150% of the rated output current
flows and overcurrent shut-off does not occur (200% or less),
inverse-time characteristics cause the electronic overcurrent
protection to be activated to stop the inverter output in order
to protect the output transistors.
Check the motor for use under overload.
Reduce the load weight.
H/Sink O/Temp
Fin overheat
If the cooling fin overheats, the overheat sensor is actuated
to stop the inverter output.
• Check for too high ambient temperature.
• Check for cooling fin clogging.
Set the ambient temperature to within the specifications.
Br. Cct. Fault (Note)
Brake transistor alarm detection (Note 2)
If a brake transistor fault occurs due to excessively large
regenerative energy from the motor, for example, that fault is
detected to stop the inverter output. In this case, the inverter
power must be switched off immediately.
Check for improper braking duty.
Change the inverter.
Please contact your sales representative.
Ground Fault
Output side ground fault overcurrent protection
This function stops the inverter output if a ground fault
overcurrent flows due to a ground fault which occurred in the
inverter's output (load) side. Use Pr. 249 "ground fault
detection at start" to set whether the protective function is to
be activated or not.
Check for a ground fault in the motor and connection cable.
Remedy the ground fault portion.
143
PROTECTIVE FUNCTIONS
5