Wiring Of The Main Circuit - Mitsubishi Electric Freqrol-A100 Instruction Manual

1.3.4 Wiring of the Main Circuit
(For the terminal block arrangement, see pages 175, 176.)
Connection of the power sup-
ply and motor
No-fuse
breaker
The power supply cables
Connect the motor to U, V, W.
must be connected to R, S , T. In the above connection,
If they are connected to U, V,
turning on the forward
W, the inverter will be rotation switch (signal)
damaged.
rotates the motor in the
[
matched.
1
the load shaft.
counterclockwise (arrow)
Phase sequence need
be
direction when viewed from
For use with a single-phase
'
power supply; the power sup-
ply cables must be connected
to R and S.
I
Connecting the control cir-
If the magnetic contactor (MC) in the inverter power supply is
cuit to a power supply sepa-
opened when the protective circuit is operated, the inverter con-
rately from the main circuit
trol circuit power is lost and the alarm output signal cannot be kept
on. To keep the alarm signal on, terminals R1 and S1 are avail-
able. In this case, connect the power supply terminals R1 and S1
of the control circuit to the primary side of the MC.
Model FR-A120(140)E-0.75K(P) to 3.7K(P)
<Circuit d i a g r a m <Connection procedure> Terminal block for
R
s
control circuit
circuit
Is
R
Loosen the upper screw.
Main power
4) Connect the cable of the other
supply
power supply to the lower
terminal ( R l , Sl). (Note 2)
Note: 1. When the main circuit power (terminals R, S, T) is on,
do not switch off the control power (terminals R1, S l ) ,
otherwise the inverter will be damaged.
2.
To use
a
separate power supply, the jumpers between
R-R1 and S-S1 must be removed.