Fuji Electric FVR-C11S-7EN Series - Connecting the Main Circuit and Ground Terminals

2-4 2 Installation and Connection
FVR-C11S-EN
2
2-3-2 Connectin
g
the main circuit and
g
round terminals
Table 2-3-1 Functions of main circuit and
g
round terminals
S
y
mbol Name Explanation
L1/L,L2/N Main power suppl
y
input Connects sin
g
le-phase power
(Sin
g
le-phase 200V input).
U, V, W Inverter output Connects 3-phase motor.
P1, P(+) For connection of DC
reactor
Connects input power- factor correctin
g
DC reactor
(optional).
P(+), N(-) For DC intermediate
circuit
Connected to DC link circuit terminal
(for DC bus connection).
G For inverter
g
roundin
g
Ground terminal for inverter chassis (case).
1) Main power suppl
y
input terminal
Sin
g
le-phase 200V [L1/L,L2/N]
Fi
g
ure 2-3-1 Arran
g
ement of main circuit and
g
round
terminals
1. Connect the main power suppl
y
input ter-
minals to the power suppl
y
via a molded
case circuit breaker for circuit protection or
earth leaka
g
e circuit breaker. An earth-
leaka
g
e circuit breaker which can also de-
tect DC current is recommended. Phase-
sequence matchin
g
is unnecessar
y
.
2. It is recommended that a ma
g
netic contac-
tor is connected to prevent an
y
failure or
accident from becomin
g
serious b
y
discon-
nectin
g
the inverter from the power suppl
y
when the inverter protective function oper-
ates.
3. Do not turn on or off the main power suppl
y
to start or stop the inverter; instead, use the
control circuit terminal FWD/REV or the
RUN/STOP ke
y
on the ke
y
pad panel. If it
is unavoidable to turn the main power sup-
pl
y
on or off to start or stop the inverter, it
must not exceed once per hour.
2) Inverter output terminal [U, V, W]
1. Connect these terminals to the 3-phase
motor with the correct phase-sequence. If
a motor rotation direction does not corre-
spond to the correct rotation direction, ex-
chan
g
e an
y
two of the U, V, and W phases.
2. Do not connect a phase-advance capaci-
tor or sur
g
e absorber to the inverter output.
3. A ver
y
lon
g
wirin
g
len
g
th between the in-
verter and the motor causes a hi
g
h fre-
quenc
y
current to flow due to floatin
g
capacit
y
between cables, makin
g
the in-
verter trip, increasin
g
the leaka
g
e current
and deterioratin
g
the accurac
y
in the cur-
rent displa
y
. To prevent such trouble, the
wirin
g
len
g
th to the motor should not ex-
ceed 50 meters.
When the inverter is operated in the low
noise mode (carrier frequenc
y
: 8 to 15
kHz) and the wirin
g
len
g
th is lon
g
, add an
optional output circuit filter (OFL filter).
GWVUN(-)P(+)
FVR-C11S-7EN
P(+)P1L2/NG L1/L
For sin
g
le-phase 200V input