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Errors (Alarms)
*2. Functions only when any of Pr. 60 to Pr. 63 (input terminal function selection)
is set to OH.
Operation Panel Indication
GF FR-PU04 Ground Fault
Name
Start-time output side ground fault overcurrent protection
Description
This function stops the inverter output if a ground fault overcurrent
flows due to a ground fault which occurred on the inverter's output
(load) side. Made valid when Pr. 40 "start-time ground fault
detection selection" = "1".
Check point
Check for a ground fault in the motor and connection cable.
Corrective action
Remedy the ground fault portion.
Operation Panel Indication
OHT FR-PU04 OH Fault
Name
External thermal relay (*2)
Description
If the external thermal relay provided for motor overheat protection
or the internally mounted temperature relay in the motor switches
on (contacts open), the inverter output is stopped. If the relay
contacts are reset automatically, the inverter will not restart unless
it is reset.
Check point
• Check for motor overheating.
• Check that the value of 7 (OH signal) is set correctly in any of Pr.
60 to Pr. 63 (input terminal function selection).
Corrective action Reduce the load and operating duty.
Operation Panel Indication
OLT FR-PU04 Stll Prev STP
Name
Stall prevention (overload)
Description
The running frequency has fallen to 0 by stall prevention operation
activated. OL appears while stall prevention is being activated.
Check point
Check the motor for use under overload.
Corrective action Reduce the load weight.
Operation Panel Indication
OPT FR-PU04 Option Fault
Name
Communication error
Description
Stops the inverter output if a setting error or connection (connector)
fault occurs during use of RS-485 communication function.
Check point Check that the connector is plugged securely.
Corrective action
Make connection securely.
Please contact your sales representative.
Operation Panel Indication
PE FR-PU04 Corrupt Memory
Name
Parameter storage device alarm
Description
A fault occurred in parameters stored
(example: E
2
PROM fault).
Check point
Check for too many number of parameter write times.
Corrective action
Please contact your sales representative.