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2. INSTALLATION AND WIRING
2.6 Control circuit
2.6.5 When using separate power supplies for the control
circuit and the main circuit
Cable size for the control circuit power supply (terminals R1/L11 and S1/
L21)
• Terminal screw size: M4
• Cable gauge: 0.75 mm
2
to 2 mm
2
• Tightening torque: 1.5 N·m
Connection method
• FR-F860-00090 or lower
<Connection diagram> 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 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.
(a) Remove the upper screws.
(b) Remove the lower screws.
(c) Remove the jumper.
(d) Connect the separate power supply cable for the control circuit to the lower terminals (R1/L11, S1/L21)
.
Inverter
MC
R/L1
S/L2
T/L3
R1/L11
S1/L21
Remove the jumper
Main circuit terminal block
(c)
(a)
(b)
(d)
T/L3
S/L2
R/L1
S1/L21
R1/L11
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