When Connecting The Control Circuit And The Main Circuit Separately To The Power Supply (Separate Power) - Mitsubishi Electric FR-A701 Instrucion Manual

2.2.4 When connecting the control circuit and the main circuit separately
to the power supply (separate power)
<Connection diagram>
MC
R/L1
S/L2
T/L3
R1/L11
S1/L21
Remove the jumper
1) Remove the upper screws.
2) Remove the lower screws.
3) Pull the jumper toward you to
remove.
4) Connect the separate power supply
cable for the control circuit to the
upper terminals (R1/L11, S1/L21).
Never connect the power cable to
the terminals in the lower stand.
Doing so will damage the inverter.
CAUTION
· Do not turn off the control power (terminals R1/L11 and S1/L21) with the main circuit power (R/L1, S/L2, T/L3) on. Doing so may
damage the inverter. Make up a circuit which will switch off the main circuit power supply terminals R/L1, S/L2, T/L3 when the
control circuit power supply terminals R1/L11, S1/L21 are switched off.
· Be sure to use the inverter with the jumpers across terminals R/L1-R1/L11 and S/L2-S1/L21 removed when supplying power
from other sources. The inverter may be damaged if you do not remove the jumper.
· The voltage should be the same as that of the main control circuit when the control circuit power is supplied from other than the
primary side of the MC.
· When separate power is supplied from R1/L11 and S1/L21, the power capacity necessary for the 15K or less is 90VA, for the
18.5K or more is 100VA.
· If the main circuit power is switched off (for 0.1s or more) then on again, the inverter resets and a fault output will not be held.
When 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 primary side of the
MC.
R1/ S1/
L11 L21 Power supply
R/L1S/L2 T/L3
MC
Main power supply
Power supply
terminal block for
the control circuit
Main circuit terminal specifications
terminal block
for the control circuit
FR-A721-5.5K to 15K
FR-A741-5.5K to 15K
3)
Power supply terminal block
for the control circuit
R1/L11
S1/L21
1)
2)
4)
FR-A721-18.5K to 55K
FR-A741-18.5K to 55K
2
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