Mitsubishi Electric FR-A800 Series Instruction Manual page 79

• Cable gauge: 0.75 to 2 mm
• Tightening torque: 1.5 N·m
 Connection method
Connection diagram
MC
Remove the jumper
• FR-A820-00250(3.7K) or lower, FR-A840-00126(3.7K) or lower
(a) Remove the upper screws.
(b) Remove the lower screws.
(c) Remove the jumper.
(d) Connect the separate power cable for the control circuit to the lower terminals (R1/L11, S1/L21).
• FR-A820-00340(5.5K) to FR-A820-00630(11K), FR-A840-00170(5.5K) to FR-A840-00380(15K)
(a) Remove the upper screws.
(b) Remove the lower screws.
(c) Remove the jumper.
(d) Connect the separate power cable for the control circuit to the upper terminals (R1/L11, S1/L21).
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2. INSTALLATION AND WIRING
2.6 Control circuit
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2
If a fault occurs and the electromagnetic contactor (MC) installed at the inverter's
input line is opened, power supply to the control circuit is also stopped and the fault
Inverter
signals cannot be output anymore. Terminals R1/L11 and S1/L21 of the control
R/L1
circuit are provided to keep outputting the fault signals in such a case. Follow the
S/L2
following steps to wire terminals R1/L11 and S1/L21 on the inverter to the power
T/L3
input lines of the MC. Do not connect the power cable to incorrect terminals. Doing
R1/L11
so may damage the inverter.
S1/L21
(c)
R/L1
(a)
(b)
R1/L11
(d)
S1/L21
Main circuit terminal block
(c)
R1/L11
(a)
(b)
R/L1
(d)
Main circuit terminal block
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S/L2
T/L3
S1/L21
T/L3
S/L2