Connection Of Peripheral Devices - Mitsubishi FR-S520-0.1K to 3.7K(-R)(-C) Instruction Manual

< Type with RS-485 communication function >
When using the RS-485 connector to wire the
cable, you can cut off the lug of the wiring cover
to wire it. (Cutting off the lug provides protective
structure IP10.)
CAUTION
The connector above the operation panel is for
manufacturer use. Do not touch it as doing so
may cause an electric shock.
1.

CONNECTION OF PERIPHERAL DEVICES

1.1 Basic Configuration
Power supply
Use within the permissible power supply specifications
of the inverter. (Refer to page 40.)
(NFB)
No-fuse breaker or earth leakage circuit breaker
or
The breaker must be selected carefully since
(ELB)
an in-rush current flows in the inverter at power-on.
Magnetic contactor
Do not use this magnetic contactor to start and stop the
(MC)
inverter. Doing so will cause the inverter life to be shorter.
AC reactor
(FR-BAL)
DC reactor
(FR-BEL)
Earth (Ground)
Devices connected to the output
Do not connect a power capacitor, surge suppressor
or radio noise filter to the output side.
Earth (Ground)
Earth (Ground)
To prevent an electric shock, always ground the motor
and inverter.
For reduction of induction noise from the power line of the inverter,
it is recommended to wire the ground cable by returning it to the
ground terminal of the inverter. (For details of noise reduction
techniques, refer to the instruction manual (detailed).)
Installation of reactors
The reactors must be used when the power factor is to be
improved or the inverter is installed near a large power supply
system (500kVA or more and wiring distance within 10m (32.81feet)).
Make selection carefully.
Inverter
The inverter life is influenced by ambient
temperature. The ambient temperature should
be as low as possible within the permissible
range. (Refer to page 42.)
Wrong wiring might lead to inverter damage. The
control signal lines must be kept fully away from
the main circuit to protect them from noise.
(Refer to page 5.)
Lug
2