Mitsubishi Electric FR-A720-0.4K Instruction Manual page 220

(5) When using the high power factor converter (FR-HC, MT-HC) or power regeneration
common converter (FR-CV)
⋅ Set "2" in Pr. 30. The Pr. 70 setting is invalid.
⋅ Use any of Pr. 178 to Pr. 189 (input terminal function assignment) to assign the following signals to the contact input
terminals.
(a)X10 signal: FR-HC, MT-HC connection, FR-CV connection (inverter operation enable signal)
To make protective coordination with the FR-HC, MT-HC or FR-CV, use the inverter operation enable signal
to shut off the inverter output. Input the RDY signal of the FR-HC, MT-HC (RDYB signal of the FR-CV).
(b)X11 signal: FR-HC, MT-HC connection (instantaneous power failure detection signal)
When the setting has been made to hold the mode at occurrence of an instantaneous power failure for RS-
485 communication operation, use this signal to hold the mode. Input the Y1 or Y2 signal (instantaneous
power failure detection signal) of the FR-HC, MT-HC.
⋅ For the terminal used for X10 or X11 signal input, assign its function by setting "10" (X10) or "11" (X11) in any of Pr.
178 to Pr. 189.
REMARKS
⋅ Setting Pr. 30 = "2" will reset the inverter, and "Err" is displayed on the operation panel during the reset.
(6) DC feeding mode 1 (Pr. 30 = "10, 11")
⋅ Setting "10, 11" in Pr. 30 enables DC power supply operation.
⋅ Leave the AC power supply connection terminal R/L1, S/L2, and T/L3 open and connect the DC power supply to
terminal P/+ and N/-. Also, remove jumpers across terminal R/L1 and R1/L11 as well as S/L2 and S1/L21, and
connect terminals R1/L11 and S1/L21 to terminal P/+ and N/-.
⋅ The diagram below is a connection example.
DC power
Frequency command
Frequency setting
potentiometer
R1/L11
S1/L21
MC
P/+
(+)
N/-
(-)
Forward rotation start
Reverse rotation start
Contact input common
3
2
1/2W1kΩ
1
Motor brake and stop operation
Inverter
Inrush
R/L1 U
current
limit circuit
S/L2 V
T/L3 W
STF
STR
SD
10
2
5
IM
Earth
(Ground)
4
209