Table of Contents
Advertisement
Operation Panel
Indication
Name
Motor overload shut-off (electronic thermal overcurrent protection) (*1)
The electronic overcurrent protection in the inverter detects motor overheat
due to overload or reduced cooling capability during low-speed operation
Description
to stop the inverter output. When a multi-pole motor or two or more motors
are run, provide a thermal relay in the output side of the inverter.
Protection from burning due to motor temperature rise
Check point
Check the motor for use under overload.
• Reduce the load weight.
• For the constant-torque motor, change the Pr. 71 setting to the constant-
Corrective action
Error code
H31
Operation Panel
Indication
Name
Inverter overload shut-off (electronic thermal overcurrent protection) (*1)
If a current not less than 150% of the rated output current flows and
overcurrent cut-off does not occur (200% or less), inverse-time
Description
characteristics cause the electronic overcurrent protection to be activated
to stop the inverter output in order to protect the output transistors.
Output transistor protection from overheat
Check point
Check the motor for use under overload.
Corrective action Reduce the load weight.
Error code
H30
*1. Resetting the inverter initializes the internal heat integrating data of the electronic
overcurrent protection.
Operation Panel
Indication
Name
Fin overheat
If the cooling heatsink overheats, the overheat sensor is actuated to stop the
Description
inverter output.
• Check for too high ambient temperature.
• Check for cooling heatsink clogging.
Check point
• Check that the cooling fan is not at a stop.
Set the ambient temperature to within the specifications.
Corrective action
Change the cooling fan.
Error code
H40
Operation Panel
Indication
Name
Start-time ground fault overcurrent protection
This function stops the inverter output if a ground fault overcurrent flows
Description
due to a ground fault that occurred in 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.
Error code
H80
THM
torque motor setting.
THT
FIN
GF
FR-PU04 Motor Overload
FR-PU04 Inv. Overload
FR-PU04 H/Sink O/Temp
FR-PU04 Ground Fault
157
Errors (Alarms)
6
Advertisement
Table of Contents
