Fuji Electric FVR-C11S-7EN Series - Options; 10-1 Built-in Options

10-1 10 Options
FVR-C11S-EN
10
10 Options
Table 10-2-1 External Options
10-1 Built-in
Options
There is an optional built-in card for RS485 serial communication.
Ask at the inverter distributor for details.
10-2 External Options
Molded case circuit
breaker
The molded case circuit breaker (MCCB) is connected for protectin
g
the
main circuit wirin
g
to the inverter and for turnin
g
power on and off.
The rated current or the rated interruptin
g
capacit
y
varies accordin
g
to the
power suppl
y
specifications.
For input power-factor
correctin
g
AC reactor (ACR)
DC reactor (DCR)
This is connected in the followin
g
cases.
1. When the power transformer capacit
y
is more than 500 kVA
2. To reduce input harmonic current
The input power factor is improved to 0.75 to 0.85 (ACR).
The input power factor is improved to 0.9 to 0.95 (DCR).
3. If there is a th
y
ristor load in the same power suppl
y
, if the capacitor for
power-factor correctin
g
is turned on or off, or if the sur
g
e volta
g
e in the
power suppl
y
is lar
g
e (ACR onl
y
)
* The DC reactor is unnecessar
y
when the AC reactor is used.
Ma
g
netic contactor
(MC)
The inverter can be operated without connectin
g
the ma
g
netic contactor.
When the inverter protective function is activated, this should be connect-
ed to turn off the power for safet
y
.
Sur
g
e absorber This is connected to suppress the sur
g
e
g
enerated b
y
the excitin
g
coil
when switchin
g
on or off the ma
g
netic contactor and the control rela
y
.
S2-A-0 (for ma
g
netic contactor), S1-B-0 (for mini control rela
y
)
Frequenc
y
settin
g
POT
(VR)
This is connected when the frequenc
y
is set from the control circuit termi-
nal usin
g
inverter power.