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

Page: 784 / 1218

(A) Application parameters Parameters
5 - 582
Automatic restart after instantaneous power failure function
●
The inverter output is shut off at the activation of the instantaneous power failure protection
(E.IPF) or undervoltage protection (E.UVT). (Refer to page 6-10 for E.IPF or E.UVT.)
●
When E.IPF or E.UVT is activated, the instantaneous power failure (IPF)/undervoltage signal is
output.
●
The IPF signal is assigned to terminal IPF in the initial setting. To assign the IPF signal to a different
terminal, set "2 (positive logic) or 102 (negative logic)" to any of Pr. 190 to Pr. 196 (Output terminal
function selection).
●
When the automatic restart after instantaneous power failure function is selected, motor restarts
at the power restoration after an instantaneous power failure or undervoltage. (E.IPF and E.UVT
are not activated.)
Connection (CS signal)
●
Restart is enabled at turn-ON of the automatic restart after instantaneous power failure/flying
start (CS) signal.
●
The inverter operation is disabled at turn-OFF of the CS signal while Pr. 57 "Restart coasting time"
≠
"9999" (with restart).
NOTES To operate the inverter with the automatic restart after instantaneous power failure function ena-
bled, check the following points.
Set Pr. 57 "Restart coasting time" = "0".
Turn the terminal CS (Selection of automatic restart after instantaneous power failure, flying start)
ON.
Fig. 5-285:
IPF signal
I001353E
I002849E_G
Fig. 5-286: Connection example
15 ms to 100 ms*
Power
supply
ON OFF
OFF
ON
* 10 to 100 ms for IP55 compatible models
STF
IM
MCCB
CS
PC
CS
PC
S1/L21
R1/L11
T/L3
S/L2
R/L1
MC1
MC2
W
V
U
MC3
MC
switchover
sequence
For use for only automatic
restart after instantaneous
power failure or flying start,
turn ON the CS signal in
advance.
With electronic bypass sequence
Only with restart after instantaneous power failure