Mitsubishi Electric 800 Series Instruction Manual page 612

DC feeding mode 1 (Pr.30 = "10, 11") (Standard models)
• For standard 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, remove the jumpers between terminal R/L1 and R1/L11 and 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.
DC power
Frequency command
Frequency setting
potentiometer
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)
• 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, remove the jumpers between terminal R/L1 and R1/L11 and 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.
Signal
Name
name
To operate with DC feeding, turn ON the X70 signal. When the inverter output is shutoff due
DC feeding to power failure, it will be possible to start up 200 ms after turning ON the X70 signal.
operation (Automatic restart after instantaneous power failure can start after the time set in Pr.57 has
X70
permission elapsed.)
signal When the X70 signal is turned OFF while operating the inverter, output shutoff (Pr.261 = 0)
or deceleration stop (Pr.261 ≠ 0) will occur.
Turn ON when stopping the DC feeding. When the X71 signal is turned ON during the
DC feeding operation of the inverter and X70 signal is ON, output shutoff (Pr.261 = 0) or deceleration
X71
cancel signal stop (Pr.261 ≠ 0) will occur, and Y85 signal will turn OFF after stopping. After turning ON the
X71 signal, operation is not possible even if the X70 signal is turned ON.
This will turn ON during power failure or undervoltage of the AC power supply. It will turn
OFF when the X71 signal turns ON or power restoration.
DC feeding The Y85 signal will not turn OFF even with the power restoration while the inverter is
Y85
signal running, but turns OFF after stopping the inverter. When the Y85 signal is turned ON due to
undervoltage, the Y85 signal will not turn OFF even when the undervoltage is resolved.
The ON/OFF status is maintained when the inverter is reset.
MC
(+)
(-)
Forward rotation start
Reverse rotation start
Contact input common
3
2
1
1/2 W 1 kΩ
Inverter
Inrush
R/L1 U
current
limit circuit
S/L2 V
T/L3 W
R1/L11
S1/L21
P/+
N/-
STF
STR
SD
10
2
5
Description
(G) Control parameters
IM
Earth
(Ground)
Parameter
setting
Set "70" to
either of
Pr.178 to
Pr.189.
Set "71" to
either of
Pr.178 to
Pr.189.
Set "85
(positive
logic) or 185
(negative
logic)" to one
of Pr.190 to
Pr.196.
PARAMETERS
5
GROUP
G
611