Mitsubishi Electric FR-A720-0.4K Instruction Manual page 24

(5) Connecting the control circuit and the main circuit separately to the power supply
<Connection diagram>
MC
R/L1
S/L2
T/L3
R1/L11
S1/L21
Remove the jumper
• FR-A720-0.4K to 3.7K, FR-A740-0.4K to 3.7K
1) Loosen the upper screws.
2) Remove the lower screws.
3) Remove the jumper
4) Connect the separate power
supply cable for the control
circuit to the lower terminals
(R1/L11, S1/L21).
• FR-A720-5.5K, 7.5K, FR-A740-5.5K, 7.5K
1) Remove the upper screws.
2) Remove the lower screws.
3) Remove the jumper.
4) Connect the separate power
supply cable for the control
circuit to the upper terminals
(R1/L11, S1/L21).
When a fault occurs, opening of the electromagnetic contactor (MC) on the
inverter power supply side results in power loss in the control circuit,
disabling the fault output signal retention. Terminals R1/L11 and S1/L21 are
Inverter
provided to hold a fault signal. In this case, connect the power supply
terminals R1/L11 and S1/L21 of the control circuit to the input side of the MC.
Do not connect the power cable to incorrect terminals. Doing so may
damage the inverter.
3)
1)
R/L1
2)
R1/L11
S1/L21
4)
Main circuit terminal block
3)
1)
2)
4)
R/
L1
Main circuit
terminal block
S/L2
T/L3
R1/L11
S1/L21
S/
T/
L2
L3
Wiring
R1/L11
S1/L21
R1/L11
S1/L21
17
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