Mitsubishi Electric FR-A820-00046 Instruction Manual page 861

Parameters
DC feeding mode 1 (Pr. 30 = "10, 11") (Standard models and IP55 compatible models)
● For standard models and IP55 compatible models, setting Pr. 30 = "10 or 11" allows operation with
a DC power supply.
● Do not connect anything to the AC power supply connecting terminals R/L1, S/L2, and T/L3, and
connect the DC power supply to the terminals P/+ and N/-. Also, for the standard model, remove
the jumpers between terminal R/L1 and R/L11as well as between S/L2 and S1/L21, and connect
the terminals R1/L11 and S1/L21 to the terminals P/+ and N/- respectively.
● Following is a connection example.
Fig. 5-339:
CAUTION:
E
Do not connect a separated converter type inverter to a DC power supply. Doing so may damage
the inverter.
DC feeding mode 2 (Pr. 30 = "20, 21") (Standard models and IP55 compatible models)
● When Pr. 30 = "20, 21", it will normally operate with AC power supply and operate with DC power
supply such as batteries at the time of power failure.
● Connect the AC power supply to the AC power supply connecting terminals R/L1, S/L2, and T/L3,
and connect the DC power supply to the terminals P/+ and N/-. Also, for the standard model,
remove the jumpers between terminal R/L1 and R/L11as well as between S/L2 and S1/L21, and
connect the terminals R1/L11 and S1/L21 to the terminals P/+ and N/- respectively.
● Operation with DC current is possible by turning ON the DC feeding operation permission signal
(X70). For details on I/O signal, refer to following table.
FR-A800
DC power
MC
(+)
(-)
Forward rotation start
Reverse rotation start
Contact input common
3
2
Frequency command
Frequency setting
potentiometer
1
1/2W 1 k
Connection example for DC feeding mode 1
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
(G) Control parameters
IM
Earth
(Ground)
I002757E
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