Peripheral devices
INSTALLATION AND WIRING
13
2
Do not use an earth leakage circuit breaker as a circuit breaker which is intended to be installed per converter unit. Doing so may cause
unintended operation of the inverter.
For every magnetic contactor installed for a converter unit in parallel connection, switching of power with the same timing is critical to supplying
power simultaneously. Otherwise, the converter units may be damaged.
NOTE
• To prevent an electric shock, always earth (ground) the motor, the inverter, and the converter unit.
• Do not install a power factor correction capacitor or surge suppressor or capacitor type filter on the inverter's output side. Doing
so will cause the inverter output shutoff or the capacitor and surge suppressor to be damaged. If any of the above devices is
connected, immediately remove it. When installing a molded case circuit breaker on the output side of the inverter, contact the
manufacturer of the molded case circuit breaker.
• Electromagnetic wave interference
The input/output (main circuit) of the inverter or the converter unit includes high frequency components, which may interfere
with the communication devices (such as AM radios) used near the inverter or the converter unit. In this case, activating the
EMC filter of the converter unit may minimize interference. (Refer to page 68.)
• For details of options and peripheral devices, refer to the respective Instruction Manual.
2.1.2 Peripheral devices
Selecting the converter unit
According to the connected motor capacity, configure the converter units and the inverters as follows.
The capacity of all converter units must be the same in a system, and that of all inverters also must be the same.
The motor capacity indicates the maximum capacity of a 4-pole motor driven by all of the inverters in parallel connection.
Symbol Name Overview
Refer
to
page
(a) Inverter (FR-A802-P)
The life of the inverter and the converter unit is influenced by the
surrounding air temperature.
The surrounding air temperature should be as low as possible within the
permissible range. This must be noted especially when the inverter is
installed in an enclosure.
Incorrect wiring may lead to damage of the inverter and the converter unit.
The control signal lines must be kept fully away from the main circuit lines to
protect them from noise.
The converter unit built-in EMC filter can reduce the noise.
17
24
68
(b) Converter unit (FR-CC2-P)
(c) Three-phase AC power supply
Must be within the permissible power supply specifications of the converter
unit.
100
(d)
Molded case circuit breaker (MCCB),
earth leakage circuit breaker (ELB), or
fuse
Must be selected carefully since an inrush current flows in the converter unit
at power ON.
13
(e)
Magnetic contactor (MC)
Install this to ensure safety.
Do not use this to start and stop the inverter. Doing so will shorten the life of
the inverter and the converter unit.
72
(f) Noise filter
Suppresses the noise radiated from the power supply side of the converter
unit.
65
(g) Noise filter
Install this to reduce the electromagnetic noise generated from the inverter
and the converter unit. The noise filter is effective in the range from about
0.5 MHz to 5 MHz.
65
(h) Induction motor Connect a squirrel-cage induction motor. —
Motor
capacity
(kW)
Number of
units
Converter unit
FR-CC2-[ ]-P
Inverter
LD (light duty) ND (normal duty, initial value)
Model
FR-A842-[ ]-P
Rated
current
(A)
Model
FR-A842-[ ]-P
Rated
current
(A)
630 2 H400K - - - 400K 09620 1232
710 2 H450K 400K 09620 1386 450K 10940 1386
800 2 H500K 450K 10940 1539 500K 12120 1539
900 2 H560K 500K 12120 1750 - - -
945 3 H400K - - - 400K 09620 1848
1065 3 H450K 400K 09620 2078 450K 10940 2078
1200 3 H500K 450K 10940 2309 500K 12120 2309
1350 3 H560K 500K 12120 2626 - - -
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