Mitsubishi Electric FR-A820-00046 (0.4K), Instruction Manual

Page: 518 / 1218

(H) Protective function parameter Parameters
5 - 316
5.10.6 Initiating a protective function
A fault (protective function) is initiated by setting the parameter.
This function can be used to check how the system operates at activation of a protective function.
●
To initiate a fault (protective function), set the assigned number of the protective function you
want to initiate in Pr. 997.
●
The value set in Pr. 997 is not stored in EEPROM.
●
When a protective function activates, the inverter trips, a fault is displayed, and a fault signal (ALM,
ALM2) is output.
●
The latest fault in the faults history is displayed while the fault initiation function is in operation.
After a reset, the faults history goes back to the previous status. (The protective function gener-
ated by the fault is not saved in the faults history.)
●
Perform inverter reset to cancel the protective function.
●
For the selectable parameter by Pr. 997 and the corresponding protective functions, refer to page
6-10.
Pr. Name
Initial
value
Setting
range
Description
997
H103
Fault initiation 9999
16 to 253
The setting range is same with the one for fault data
codes of the inverter (which can be read through
communication).
Written data is not stored in EEPROM.
9999
The read value is always "9999".
With this setting, the protective function does not
activate.
NOTES If a protective function is already operating, no fault can be activated by Pr. 997.
The retry function is disabled when a protective function has been initiated by the fault initiation
function.
If a fault occurs after a protective function has been activated, the protective function indication
does not change. The fault is not saved in the faults history either.