Mitsubishi Electric FR-D720S SC EC, Instruction Manual

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Wiring Inverter and peripheral devices
FR-D700 SC EC 3 - 1
3 Wiring
3.1 Inverter and peripheral devices
I002182E
Fig. 3-1: System configuration overview
P/+ P1
R/L1 S/L2 T/L3
P/+ N/–
U V W
P/+
PR
S1
S2
PC
P/+
P/+
PR
PR
3-phase AC power supply
Use within the permissible power
supply specifications of the invert-
er. To ensure safety, use a moulded
case circuit breaker, earth leakage
circuit breaker or magnetic contac-
tor to switch power ON/OFF.
(Refer to Appendix A.)
Moulded case circuit breaker
(MCCB) or earth leakage circuit
breaker (ELB), fuse
The breaker ust be selected
carefully since an in-rush current
flows in the inverter at power on.
(Refer to section 3.1.1.)
AC reactor
(FR-BAL-B)
DC reactor
(FFR-HEL-(H)-E)
EMC filter
(FFR-CS / FFR-MSH)
(optional)
Install this as required.
High power factor
converter (FR-HC)
Power supply harmonics
can be greatly suppressed.
Install this as required.
Resistor unit (FR-BR)
Discharging resistor
(GZG, GRZG)
The regenerative braking
capability of the inverter can
be exhibited fully.
Install this as required.
Brake unit
(FR-BU2/BU-UFS)
Magnetic contactor (MC)
Install the magnetic contactor to ensure
safety. Do not use this magnetic contactor
to start and stop the inverter.
Doing so will cause the inverter life to be
shortened.
(Refer to section 3.1.1.)
Parameter unit
(FR-PA07)
By connecting the
connection cable
(FR-A5CBL) to the
PU connector,
operation can be
performed from
FR-PA07.
FFR-DT = Output filter
FFR-SI = Sine wave filter
Earth
Earth
Devices connected to the output
Do not install a power factor correction
capacitor, surge suppressor, arrester or
radio noise filter on the output side of the
inverter.
When installing a moulded case circuit
breaker on the output side of the inverter,
contact each manufacturer for selection of
the moulded case circuit breaker.
Earth
To prevent an electric shock, always earth
the motor and inverter.
Brake resistor
(FR-ABR)
Braking capability can be
improved.
Install this as required.
Reactor (FR-BAL-B, FFR-HEL-(H)-E)
Reactors (option) should be used when power harmonics measures are taken, the power
factor is to be improved or the inverter is installed near a large power supply system
(500kVA or more). The inverter may be damaged if you do not use reactors.
Select the reactor according to the model. Remove the jumpers across terminals P/+ and P1
to connect to the DC reactor. (Refer to section 3.6.7).
RS232C/RS485
Converter SC-FR-PC
Approved safety
relay module
Required for
compliance with
safety standard.
RS232C/RS485 converter is
required when connecting to
PC with RS232C interface.
Inverter (FR-D700 SC EC)
Power regeneration
common converter
(FR-CV)
Greater braking capability
is obtained.
Install this as required.