Mitsubishi Electric FR-F820-00046, Instruction Manual

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Parameters (A) Application parameters
FR-F800 5 - 389
Operation setting at pre-charge fault
●
The protective function can be activated when limit values are exceeded if the time limit is set at
Pr. 764 "Pre-charge time limit" and the measured value limit level is set at Pr. 762 "Pre-charge
ending time".
●
Whether to shut off output immediately after the protective function is activated or after a
deceleration stop can be selected by Pr. 760 "Pre-charge fault selection".
●
When the time limit is exceeded, the Pre-charge time over (Y51) signal is output. When the
measured value limit level is exceeded, the Pre-charge level over (Y53) signal is output. For the
Y51 signal, set "51 (positive logic)" or "151 (negative logic)" to Pr. 190 to Pr. 196 (output terminal
function selection), and for the Y53 signal, set "53 (positive logic)" or "153 (negative logic)" in
Pr. 190 to Pr. 196 (output terminal function selection) to assign the functions to terminals.
●
Example of protective function by time limit (Pr. 760 = "0")
NOTES For Pr. 764 "Pre-charge time limit", set a value greater than Pr. 762 "Pre-charge ending time".
For Pr. 763 "Pre-charge upper detection level", set a value greater than Pr. 761 "Pre-charge ending
level".
I002704E
Fig. 5-183: Reaching of pre-charge time limit
STF
Y49
Y51
ALM
E.PCH
Ending level
Measured value [PSI]
Pr. 761
Output frequency [Hz]
Pr. 764
When Pr. 760 = "0",
output is immediately shut off.
Time
Time
Pr. 127
0 Hz