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 protecting the
main circuit wiring to the inverter and for turning power on and off.
The rated current or the rated interrupting capacity varies according to the
power supply specifications.
For input power-factor
correcting
AC reactor (ACR)
DC reactor (DCR)
This is connected in the following cases.
1. When the power transformer capacity 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 thyristor load in the same power supply, if the capacitor for
power-factor correcting is turned on or off, or if the surge voltage in the
power supply is large (ACR only)
* The DC reactor is unnecessary when the AC reactor is used.
Magnetic contactor
(MC)
The inverter can be operated without connecting the magnetic contactor.
When the inverter protective function is activated, this should be connect-
ed to turn off the power for safety.
Surge absorber
This is connected to suppress the surge generated by the exciting coil
when switching on or off the magnetic contactor and the control relay.
S2-A-0 (for magnetic contactor), S1-B-0 (for mini control relay)
Frequency
setting POT
(VR)
This is connected when the frequency is set from the control circuit termi-
nal using inverter power.
