Installation And Wiring - Mitsubishi Electric FR-A700 Instruction Manual

2 INSTALLATION AND WIRING

Three-phase AC power supply
Use within the permissible power supply
specifications of the inverter.
(Refer to page 158)
Moulded case circuit breaker (MCCB) or
earth leakage current breaker (ELB),
fuse
The breaker must be selected carefully
since an in-rush current flows in the inverter
at power on.
(Refer to page 4)
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 shorten.
(Refer to page 35)
Reactor (FR-HAL, FR-HEL option)
Reactors (option) must 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 (1000kVA 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/+ - P1 to
connect the DC reactor to the 55K or less.
AC reactor
(FR-HAL)
Noise filter
(FR-BLF)
The 55K or less has
a built-in common
mode core.
High power factor converter
(FR-HC *1 , MT-HC *2 )
Power supply harmonics can
be greatly suppressed.
Install this as required.
*1 Compatible with the 55K or less.
*2 Compatible with the 75K or more.
CAUTION
· Do not install a power factor correction capacitor, surge suppressor or radio noise filter on the inverter output side. This will cause the
inverter to trip or the capacitor, and surge suppressor to be damaged. If any of the above devices are connected, immediately remove them.
· Electromagnetic wave interference
The input/output (main circuit) of the inverter includes high frequency components, which may interfere with the communication
devices (such as AM radios) used near the inverter. In this case, set the EMC filter valid to minimize interference.
(Refer to section 2 of
· Refer to the instruction manual of each option and peripheral devices for details of peripheral devices.
2
(Refer to section 3 of Instruction Manual
(applied)) )
DC reactor (FR-HEL)
For the 75K or more, a
DC reactor is supplied.
Always install the reactor.
Power regeneration
*1
common converter (FR-CV )
Power regeneration
*2
converter (MT-RC )
Great braking capability is obtained.
Install this as required.
Instruction Manual (applied).)
(Refer to page 27)
USB connector
A personal computer and an inverter can
be connected with a USB (Ver1. 1) cable.
R/L1 S/L2 T/L3
P/+ P1 P/+ N/-
Earth
(Ground)
Brake unit
(FR-BU2, FR-BU *1 , MT-BU5 *2 )
Devices connected to the output
P/+ PR
Do not install a power factor correction capacitor,
P/+
surge suppressor or radio noise filter on the output
PR 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.
Resistor unit
Earth (Ground)
(FR-BR *1 , MT-BR5 *2 )
To prevent an electric shock, always earth (ground) the
The regenerative braking
motor and inverter.
capability of the inverter can
be exhibited fully.
Install this as required.
Inverter (FR-A700)
The life of the inverter is influenced by
ambient temperature.
temperature should be as low as possible
within the permissible range. This must be
noted especially when the inverter is
installed in an enclosure. (Refer to page 7)
Wrong wiring might lead to damage of the
inverter. The control signal lines must be
kept fully away from the main circuit to
protect them from noise.(Refer to page 8)
Refer to page 9 for the built-in EMC filter.
High-duty brake resistor
*3
(FR-ABR )
Braking capability of the inverter built-
in brake can be improved. Remove
the jumper across terminal PR-PX
when connecting the high-duty brake
resistor. (7.5K or less)
Always install a thermal relay when
using a brake resistor whose capacity
is 11K or more.
*3 Compatible with the 22K or less.
P/+
PR
Noise filter
(FR-BSF01, FR-BLF)
U V W
Install a noise filter to reduce
the electromagnetic noise
generated from the inverter.
Effective in the range from
about 1MHz to 10MHz. A wire
should be wound four turns at
a maximum.
Motor
Earth (Ground)
The ambient