Mitsubishi Electric FR-CC2-P Instruction Manual page 97

(H) Protective function parameter
5.3
(H) Protective function parameter
Purpose
To vary the operating level of the
undervoltage protective function
To initiate an inverter protective
function
To disable the I/O phase loss
protective function
To operate without activating
protective functions in case of
emergency
5.3.1
Varying the activation level of the undervoltage
protective function
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
598
Undervoltage level
H102
5.3.2
Initiating a protective function
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
997
Fault initiation
H103
• 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
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.
96
PARAMETER
Parameter to set
Undervoltage level
Fault initiation
Input phase loss
protection selection
Emergency drive
Initial
Setting range
value
350 to 430 VDC
9999
9999
Initial Setting
value range
16 to 253
9999
9999
P.H102 Pr.598
P.H103 Pr.997
P.H201 Pr.872
P.H301, P.H320, Pr.67, Pr.514
P.H322, P.H324 Pr.515, Pr.523
Description
Set the DC voltage value at which E.UVT occurs.
E.UVT occurs at 430 VDC.
Description
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.
The read value is always "9999".
With this setting, the protective function is not activated.
page
Refer to
page
96
96
97
97
141.