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5. PARAMETERS
5.3 (H) Protective function parameter
5.3
(H) Protective function parameter
5.3.1
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 to be initiated in
Pr.997
.
• The value set in
Pr.997
is not stored in EEPROM.
• When the protective function is activated, the inverter output is shut off and the converter unit displays a fault to output a
Fault (ALM, ALM2) signal.
• The latest fault in the fault history is displayed while the fault initiation function is in operation. After a reset, the fault history
goes back to the previous status. (The protective function generated by the fault is not saved in the fault history.)
• Perform converter reset to cancel the protective function.
• For the selectable parameter by
Pr.997
and the corresponding protective functions, refer to
NOTE
• 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 fault history either.
5.3.2
Input phase loss protection selection
The input phase loss protective function on the converter unit input side (R/L1, S/L2, T/L3) can be enabled.
• When
Pr.872
is set to "1", Input phase loss (E.ILF) protection is activated if one of three phases is detected to be lost for
1 second continuously.
NOTE
• In the case of R/L1, S/L2 phase loss, the input phase loss protection does not operate, and the inverter output is shut off.
• If an input phase loss continues for a long time, the life of the capacitor of the converter unit become shorter.
5.3.3
Retry function
This function allows the converter unit to reset itself and restart at activation of the protective function (fault indication). The
retry generating protective functions can also be selected.
Purpose
Parameter to set
Refer to page
To initiate an inverter protective
function
Fault initiation
P.H103
Pr.997
To disable the input phase loss
protective function
Input phase loss protection
selection
P.H201
Pr.872
To restart using the retry function when
the protective function is activated
Retry operation
P.H300 to P.H303
Pr.65, Pr.67 to Pr.69
Pr.
Name
Initial value
Setting range
Description
997
H103
Fault initiation
9999
32 to 253
The setting range is same with the one for fault data codes of the
converter unit (which can be read through communication). Written
data is not stored in EEPROM.
9999
The read value is always "9999". The protective function is not
activated with this setting.
Pr.
Name
Initial value
Setting range
Description
872
H201
Input phase loss
protection selection
0
0
Input phase loss protection disabled
1
Input phase loss protection enabled
Содержание FR-CC2-N Series
Страница 61: ...60 3 PRECAUTIONS FOR USE OF THE CONVERTER UNIT 3 4 Checklist before starting operation MEMO ...
Страница 137: ...136 5 PARAMETERS 5 10 Checking parameters changed from their initial values initial value change list MEMO ...
Страница 153: ...152 6 PROTECTIVE FUNCTIONS 6 6 Check first when you have a trouble MEMO ...
Страница 165: ...164 7 PRECAUTIONS FOR MAINTENANCE AND INSPECTION 7 2 Measurement of main circuit voltages currents and powers MEMO ...
Страница 171: ...170 8 SPECIFICATIONS 8 3 Outline dimension drawings MEMO ...
