Errors And Protective Functions; About Errors (Definitions) - Mitsubishi Electric FR-S540E-0.4K-EC Instruction Manual

7.

ERRORS AND PROTECTIVE FUNCTIONS

7.1 About errors (definitions)

When an alarm occurs in the inverter, the protective function is activated to bring the
inverter to an alarm stop and the PU display automatically changes to any of the
following error (alarm) indications.
For details, refer to the separately available instruction manual (detailed).
(1) Major failures
Operation
Panel
Indication
Overcurrent shut-off
(OC1)
during acceleration
Overcurrent shut-off
(OC2)
during constant speed
Overcurrent shut-off
(OC3)
during deceleration
Regenerative
overvoltage shut-off
(OV1)
during acceleration
Regenerative
overvoltage shut-off
(OV2)
during constant speed
Regenerative
overvoltage shut-off
(OV3)
during deceleration or
stop
Motor overload shut-off
(Electronic thermal relay
(THM)
function) (*1)
Inverter overload shut-off
(Electronic thermal relay
(THT)
function) (*1)
Fin overheat
(FIN)
Start-time output side
earth fault
(GF)
overcurrent protection
(*2)
*1. Resetting the inverter initializes the internal thermal integration data of the electronic
thermal relay function.
*2. Activated only when "1 (factory setting)" is set in Pr. 40 "start-time earth fault detection
selection".
Function Name Definition
The inverter output current rose to or above about
200% of the rated inverter current during
acceleration.
The inverter output current rose to or above about
200% of the rated inverter current during constant
speed operation.
The inverter output current rose to or above about
200% of the rated inverter current during
deceleration.
Excessive regenerative energy or surge voltage
occurred during acceleration.
Excessive regenerative energy or surge voltage
occurred during constant speed.
Excessive regenerative energy or surge voltage
occurred during deceleration or stop.
Overload or reduced cooling capability during low-
speed operation
Protection against burnout due to motor
temperature rise
Current more than 150% of the rated output current
flew and overcurrent shut-off did not occur.
Output transistor protection from overheat
Temperature rise of the heatsink.
Earth fault occurred on the inverter's output side at
a start.
45
About errors (definitions)
7