FREQROL-HC2

Protective functions

21

When a fault occurs in the converter, the protective function activates to trip the converter, and the PU display automatically changes to one of the following fault or alarm indications.

Operation Panel Indication

E — — —

Faults history

Name

Error

message





HOLD

Er1 rE1 to 4

Operation panel lock

Parameter write error

Copy operation fault

Warning



Alarm



Fault



E.THT

E.FIN

E.IPF

E.UVT

E.ILF

E.OHT

E. 2

E. 3

Err.

OL

PS

TH

MT

CP

SL

FN

E.OC2

E.OV2

E.OP3

E.PE

E.PE2

E.PUE

E.RET

E. 6

E. 7

CPU

Error

Overload signal detection

PU stop

Electronic thermal relay pre-alarm

Maintenance signal output



Parameter copy

Power supply not detected

Fan fault

Overcurrent trip

Overvoltage trip

Converter overload trip (electronic thermal relay function)



Fin overheat

Instantaneous power failure

Undervoltage

Input phase loss

External thermal relay operation



HC2 dedicated board disconnection

Option fault

Communication option fault

Parameter storage device fault (control circuit board)

Parameter storage device fault (main circuit board)

PU disconnection



Retry count excess



CPU fault

E. 8

E. 9

Input power supply fault 1

Input power supply fault 2

E.CTE

E.P24

E.CDO

E.IOH

Operation panel power supply short circuit, RS-485 terminal power supply short circuit

24VDC power output short circuit

Input current detection value exceeded



Inrush current limit circuit fault

E. 13

Internal circuit fault



Resetting the converter initializes the cumulative value of the internal thermal relay.



The error message shows an operational error. The converter does not trip.



Warnings are messages given before faults occur. The converter does not trip.



Alarms warn the operator of failures with output signals. The converter does not trip.



When faults occur, the protective functions are activated to trip the converter and output the fault signals.



Assign the OH signal to one of Pr.3 to Pr.7 (Input terminal function selection) to enable the external thermal relay operation.



This protective function is not available in the initial status.