Mitsubishi Electric FR-A700 Instruction Manual page 431

Parameter
DC feeding mode 2 (Pr. 30 = 20 or 21)
● When "20 or 21" is set in Pr. 30, operation is performed with AC power normally and with
DC power such as battery at power failure.
● Connect the AC power supply to terminal R/L1, S/L2, and T/L3 and connect the DC power
supply to terminal P/+ and N/-. Also, remove jumpers across terminal R/L1-R1/L11 and S/
L2-S1/L21, and connect terminals R1/L11 and S1/L21 to terminal P/+ and N/-.(Refer to the
connection example on the next page).
● Turning on the DC feeding operation permission signal (X70) enables DC power supply
operation. Refer to the table below for I/O signals.
Signal
Input
Output
Tab. 6-68: I/O signals for DC feeding mode 2
FR-A700 EC
Bezeichnung
DC feeding operation
X70
permission signal
DC feeding cancel
X71
signal
Y85 DC feeding signal
Description
When performing operation with DC
feeding, turn on the X70 signal. When
the inverter output is shut off because
of power failure, the inverter can be
started in about 150ms after switching
off the X70 signal then on again.
(When automatic restart operation is
valid,the inverter starts after additional
Pr. 57 set time has elapsed.)
When the X70 signal turns off during
inverter operation, output is shutoff
(Pr. 261 = 0) or the inverter is decele-
rated to a stop (Pr. 261 ≠ 0).
Turn this signal on to stop DC feeding.
When the X71 signal is turned on
during inverter operation with turning
on the X70 signal, output is shutoff
(Pr. 261 = 0) or the inverter is decele-
rated to a stop (Pr. 261 ≠ 0), then the
X85 signal turns off after the inverter
stop.
After turning on of the X71 signal, ope-
ration can not be performed even if the
X70 signal is turned on.
This signal turns on during power fai-
lure or under voltage of AC power.
The signal turns off when the X71
signal turns on or power is restored.
The Y85 signal does not turn off
during inverter operation even if the
power is restored and turns off after
an inverter stop.
When the Y85 signal turns on
because of undervoltage, the Y85
signal does not turn off even if under-
voltage is eliminated. ON/OFF status
is retained at an inverter reset.
Motor brake and stop operation
Parameter Setting
Set 70 in any of Pr. 178 to
Pr. 189.
Set 71 in any of Pr. 178 to
Pr. 189.
Set "85 (source logic) or 185
(sink logic)" in any of
Pr. 190 to Pr. 196
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