Mitsubishi Electric FR-A700 Series, Technical Manual

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541
SELECTION
S
E
LECTION
3
selecting the earth leakage circuit breaker. (As a
result of measurement in accordance with the
measurement method specified in the New
Electrical Appliances Control Rules, the leakage
current of the H15K or less is approximately 1mA
under the conditions of 60Hz inverter output
frequency and 14.5kHz carrier frequency.)
5) Others
Control can be applied to V/F control or Advanced
magnetic flux vector control.
FR-BMF-H
1) Installation
(a) The FR-BMF-H can be installed on the
inverter rear side (up to 22K) or on the right
side as viewed from the inverter front.
(b) When installing on the side, leave 10mm or
more between the filter and inverter to release
heat.
(c) When using the inverter with the filter pack
installed on the side, do not install this
combination on moving objects or places that
have vibrations (exceeding 1.96m/s
2 ).
2) Wiring
(a) Connect the input cable (U, V, W) of the filter
to the output terminal (U, V, W) of the inverter
and connect the cable from the motor terminal
to the output terminal (W, Y, Z) of the filter.
(b) The wiring length of the filter input connected
to the inverter output terminal should not be
extended.
The wiring length between the filter output
terminals and motor input terminals should be
within 100m.
(c) The cable size may be any size if it is as
recommended for the inverter.
3) Others
The PWM carrier frequency of the inverter should
be 2KH
Z
or less.
(7) Sine wave filter
For the 75K or more inverter, the motor
voltage and current can be made to nearly sine wave
shaped by providing a sine wave filter on the output side.
As a result of this, the same characteristic as when the
motor is driven with a sine wave current is obtained and the
result as below can be expected.
1. Low noise
2. Surge less
3. Motor loss reduction (use of standard motor)
1) Installation
(a) When connecting capacitors in parallel, leave
installation space of 25mm or more.
(b) The temperature rise of the reactor is
equivalent to H class, leave an installation
space of 30mm or more between the
capacitor.
Also perform wiring so that the wires do not
make contact with the reactor.
(c) Install a sine wave filter on the inverter side.
2) Wiring
Connecting the capacitor on the primary side (U,
V, W) of the reactor may damage the capacitor.
3) Others
(a) Change to [
Pr. 720
= 25]. (The initial value is
2.)
The carrier frequency changes to 2.5KH
Z
.
(The sine wave filter is designed on condition
that the carrier frequency is 2.5KH
Z
. Be sure
to change the setting properly.)
If the inverter is operated with [ Pr. 72 25],
the inverter and sine wave filter may be
damaged.
(b) The sine wave filter can be used only for 60
H
Z
or less inverter frequency.
Note that the filter can not be used for the
higher frequency operation than this.
(Otherwise the filter loss will increase.)
(c) Use the inverter with capacity one rank higher.
If the rated motor current x (1.05 to 1.1) is less
than 90% of the inverter rated current, an
inverter with same kW with a motor can be
used.
Inverter
FR-BMF
Rear panel installation
FR-BMF
Inverter
Side panel installation
A700 F700