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Omron SYSDRIVE 3G3RV Series User Manual

Omron SYSDRIVE 3G3RV Series
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W
iring Main Circuit Terminals
2
-
2
5
Countermeasures
Against
Radio
Interference
Radio
noise
is
generated
from
the
Inverter
as
well
as
from
the
input
and
output
lines.
To
reduce
radio
noise,
install
noise
filters
on
both
input
and
output
sides,
and
also
install
the
Inverter
in
a
totally
enclosed
steel
box.
The
cable
between
the
Inverter
and
the
motor
should
be
as
short
as
possible.
Fig 2.14 Countermeasures Against Radio Interference
Cable
Length
between
Inverter
and
Motor
If
the
cable
between
the
Inverter
and
the
motor
is
long,
the
high-frequency
leakage
current
will
increase,
caus-
ing
the
Inverter
output
current
to
increase
as
well.
This
may
affect
peripheral
devices.
To
prevent
this,
adjust
the
carrier
frequency
(set
in
C6-01,
C6-02)
as
shown
in
Table
2.11.
(For
details,
refer
to
Chapter
5
Parame-
ters.)
Restriction
on
Using
Single-phase
Motors
Single-phase
motors
are
not
suited
for
variable-speed
operation
using
the
Inverter.
There
are
two
methods
used
to
determine
the
operating
direction
for
a
single-phase
motor
upon
startup:
Capacitor
startup
and
split-
phase
startup.
With
the
capacitor
startup
method,
there
is
a
possibility
that
the
steep
charge
and
discharge
of
the
Inverter
output
will
damage
the
capacitor.
Likewise,
with
the
split-phase
startup
method,
there
is
a
possi-
bility
of
damaging
the
starting
coil
because
there
is
no
centrifugal
switch
operation.
nGround
Wiring
Observe
the
following
precautions
when
wiring
the
ground
line.
• Always
use
the
ground
terminal
of
the
200-V
Inverter
with
a
ground
resistance
of
less
than
100
Ω
and
that
of
the
400-V
Inverter
with
a
ground
resistance
of
less
than
10
Ω.
• Do
not
share
the
ground
wire
with
other
devices,
such
as
welding
machines
or
power
tools.
• Always
use
a
ground
wire
that
complies
with
technical
standards
on
electrical
equipment
and
minimize
the
length
of
the
ground
wire.
Leakage
current
flows
through
the
Inverter.
Therefore,
if
the
distance
between
the
ground
electrode
and
the
ground
terminal
is
too
long,
potential
on
the
ground
terminal
of
the
Inverter
will
become
unstable.
• When
using
more
than
one
Inverter,
be
careful
not
to
loop
the
ground
wire.
Fig 2.15 Ground Wiring
Table 2.11 Cable Length between Inverter and Motor
Cable
length 50
m
max. 100
m
max. More
than
100
m
Carrier
frequency 15
kHz
max. 10
kHz
max. 5
kHz
max.
IM
MCCB
Power
supply
Inverter
Noise
filter
Metal pipe
Noise
filter
Steel box
OK
NO

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Omron SYSDRIVE 3G3RV Series Specifications

General IconGeneral
BrandOmron
ModelSYSDRIVE 3G3RV Series
CategoryInverter
LanguageEnglish

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