Mitsubishi Electric FR-A700 Technical Manual page 299

(10) DC feeding mode1 [Pr. 30 = 10, 11]
Setting [Pr. 30 = 10, 11] enables DC power supply
operation. Built-in brake transistor control is valid.
Leave the AC power supply connection terminals R/
L1, S/L2, and T/L3 open and connect the DC power
supply to terminals P/
Frequency command
Frequency setting
(11) DC feeding mode 2 [Pr. 30 = 20, 21]
When [Pr. 30 = 20, 21], operation is performed with
AC power normally and with DC power such as
battery at power failure. Built-in brake transistor
control is valid.
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 and R/1/L11 and across terminal S/L2
DC feeding permission signal
Frequency command
Frequency setting
*1 Assign the function using [Pr. 178 to 189 input terminal function selection].
*2 Assign the function using [Pr. 190 to 196 output terminal function selection].
A700
and N/-. Also, remove
+
DC power
MC
(+)
(-)
Forward rotation start
Reverse rotation start
Contact input common
3
2
potentiometer
1/2W1kΩ
1
A700
MCCB
Three-phase AC
power supply
DC power
MC
(+)
(-)
Forward rotation start
Reverse rotation start
DC feeding cancel signal
Contact input common
3
2
potentiometer
1
1/2W1kΩ
jumpers across terminals R/L1 and R/1/L11 and
across terminals S/L2 and S1/L21. And connect
terminals R1/L11 and S1/L21 to terminal P/
The diagram below is a connection example.
Inverter
Inrush
R/L1 U
current
limit circuit
S/L2 V
W
T/L3
R1/L11
S1/L21
P/+
N/-
STF
STR
SD
10
2
5
and S1/L21. And connect terminals R1/L11 and S1/
L21 to terminal P/
Turning ON the DC feeding operation permission
signal (X70) enables DC power supply operation.
The following shows the connection diagram when
switching to a DC power using inverter power failure
detection.
Inverter
Inrush
R/L1 current U
limit circuit
S/L2 V
T/L3 W
R1/L11
S1/L21
P/+
N/-
STF
STR
*1
X70
*1
X71
SD
DC feeding signal
*2
Y85
10
2
SE
5
333
PARAMETER
and N/-.
+
IM
Earth
(Ground)
and N/-.
+
IM
Earth
(Ground)
MC
24VDC
2