Mitsubishi Electric FR-A802-P Instruction Manual page 14

Symbol Name
(a) Inverter (FR-A802-P)
(b) Converter unit (FR-CC2-P)
(c) Three-phase AC power supply
Molded case circuit breaker (MCCB),
earth leakage circuit breaker (ELB), or
(d)
fuse

(e)
Magnetic contactor (MC)
(f) Noise filter
(g) Noise filter
(h) Induction motor

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, the ON/OFF timing of the magnetic contactors is critical to
supplying power to the converters simultaneously.
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
• 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.
(When a single wound motor is connected)
Motor
Number of
capacity
units
(kW)

630 2 H400K
710 2 H450K
800 2 H500K
900 2 H560K
945 3 H400K
1065 3 H450K
1200 3 H500K
1350 3 H560K

The motor capacity indicates the maximum capacity of a 4-pole motor driven by all of the inverters in parallel connection.
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.
Must be within the permissible power supply specifications of the converter
unit.
Must be selected carefully since an inrush current flows in the converter unit
at power ON.
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.
Suppresses the noise radiated from the power supply side of the converter
unit.
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.
Connect a squirrel-cage induction motor.
Converter unit
FR-CC2-[ ]-P
FR-A842-[ ]-P
-
400K
450K
500K
-
400K
450K
500K
Overview
page 74.)
Inverter
LD (light duty)
Rated
Model
current
(A)
- -
09620 1386
10940 1539
12120 1750
- -
09620 2078
10940 2309
12120 2626
INSTALLATION AND WIRING
Peripheral devices
ND (normal duty, initial value)
Rated
Model
current
FR-A842-[ ]-P
400K 09620 1232
450K 10940 1386
500K 12120 1539
- - -
400K 09620 1848
450K 10940 2078
500K 12120 2309
- - -
Refer
to
page
18
25
74
106
13
78
71
71
—
2
(A)
13