Mitsubishi Electric FR-CC2-P, Instruction Manual

Page: 97 / 184

(H) Protective function parameter
96
PARAMETER
5.3
(H) Protective function parameter
5.3.1
Varying the activation level of the undervoltage
protective function
5.3.2
Initiating 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 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 page 141 .
NOTE
• If a protective function is already operating, no protective function cannot be initiated by Pr.997 .
• 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.
Purpose Parameter to set
Refer to
page
To vary the operating level of the
undervoltage protective function
Undervoltage level P.H102 Pr.598
96
To initiate an inverter protective
function
Fault initiation P.H103 Pr.997
96
To disable the I/O phase loss
protective function Input phase loss
protection selection
P.H201 Pr.872
97
To operate without activating
protective functions in case of
emergency
Emergency drive
P.H301, P.H320,
P.H322, P.H324 Pr.67, Pr.514
Pr.515, Pr.523
97
If the undervoltage protection (E.UVT) is activated due to unstable voltage in the power supply, the undervoltage level
(DC bus voltage value) can be changed.
Pr. Name
Initial
value
Setting range Description
598
H102
Undervoltage level
9999
350 to 430 VDC Set the DC voltage value at which E.UVT occurs.
9999 E.UVT occurs at 430 VDC.
A fault (protective function) is initiated by setting the parameter.
This function is useful to check how the system operates at activation of a protective function.
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 converter unit (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 is not activated.