Mitsubishi Electric FR-F500 Instruction Manual page 33

( 5 ) Connecting the control circuit to a power supply separately from the main circuit
If the magnetic contactor (MC) in the inverter power supply is opened when the protective circuit is operated,
the inverter control circuit power is lost and the alarm output signal cannot be kept on. To keep the alarm
signal on, connect the power supply terminals R1 and S1 <L
of the MC.
<Connection procedure>
R1
<L > <L
11
R S T
<L > <L > <L >
1 2 3
MC
Main power supply
Note: 1. When the main circuit power (R, S, T) <L
(terminals R1, S1 <L
2. When using a separate power supply, the jumpers across R-R1 and S-S1 <L
must be removed. Otherwise the inverter may be damaged.
3. For a different power supply system, which takes the power of the control circuit from other than
the primary side of the MC, the voltage should be equal to the main circuit voltage.
4. The power supply cables must not be connected to the lower terminals. If connected, the inverter
may be damaged.
S1
>
21
Power supply terminal
block for control circuit
, L >). Otherwise the inverter may be damaged.
11 21
INSTALLATION AND WIRING
and L > of the control circuit to the primary side
11 21
Power supply terminal
block for control circuit
1) Loosen the upper screws.
2) Remove the lower screws.
3) Pull out and remove the jumper.
4) Connect the separate power supply
cables for control circuit to
upper terminals R1, S1<L
L , L > is on, do not switch off the control power
1 2 3
15
L >. (Note 4)
11, 21
-L and L -L >
1 11 2 21
2