Mitsubishi Electric FR-A820-00046 (0.4K) Instruction Manual page 694

 Selection between resetting or not resetting during power supply to main
circuit (Pr.30 = "100, 101, 102, 110, 111, 120, or 121")
• Inverter reset is not performed if Pr.30 = "100" or more, and supplying power to the main circuit (input through terminals
R/L1, S/L2, and T/L3) is started when power is supplied only to the control circuit (input through terminals R1/L11 and S1/
L12, or 24 V external power supply input).
• When a communication option, etc. is used, communication interruption due to the inverter reset can be avoided.
NOTE
• When supplying power to the main circuit is started while the protective function of the inverter is activated, inverter reset is
performed even when "not resetting after power-ON" is selected.
 DC feeding mode 1 (Pr.30 = "10 or 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.
• Keep the AC power supply connection terminals R/L1, S/L2, and T/L3 open, and connect the DC power supply between
terminals P/+ and N/-. Also, for the standard model, remove the jumpers between terminals R/L1 and R1/L11 and between
terminals S/L2 and S1/L21, and connect the terminals R1/L11 and S1/L21 to the terminals P/+ and N/- respectively.
• The diagram below is a connection example.
DC power
MC
(+)
(-)
Forward rotation start
Reverse rotation start
Contact input common
3
2
Frequency command
Frequency setting
potentiometer
1
1/2 W 1 kΩ
CAUTION
• 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 or 21") (standard models and IP55
compatible models)
• When Pr.30 = "20 or 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 terminals R/L1 and
R1/L11 and between terminals 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 (X70) signal. For details on the
I/O signals, refer to following table.
Inverter
Inrush
U
R/L1
current
limit circuit
S/L2 V
W
T/L3
R1/L11
S1/L21
Earth
P/+
(Ground)
N/-
STF
STR
SD
10
2
5
IM
5.16 (G) Control parameters
1
2
3
4
5
6
7
8
9
10
693
5. PARAMETERS