E6581386
J-4
10
10.4 Application and functions of options
Separate type options shown below are prepared for the inverter VF-PS1
Molded-case
circuit breaker
(MCCB)
N.F
moto
IM
Magnetic
contactor
(MC)
Power supply
(1) Input AC reactor
(ACL)
(3) EMC filter for CE
compliance
(2) DC reactor
(DCL)
VF-PS1
(5) Motor end surge voltage
suppression filter (for 400V
models only)
(6) Control power supply
backup option
(4) Braking resistor
(4) Braking unit
(250kW models and larger)
Sorts of separate-type options
No. Option name Function, purpose.
(1)
Input AC reactor
(ACL)
(2)
DC reactor(DCL)
To be used for improvement of input power-factor of the inverter power source, for reducing
higher harmonic or suppressing external surge. The input reactor can be installed when the
power capacity is 500 kVA or more and it is 10 times or more as high as the inverter capacity
or there are some source distorted wave generation such as a thyristor, etc. and a high
capacity inverter connected with the same distribution system.
The DC reactor is superior to the input AC reactor in power-factor improvement. For the
inverter system that is required to be high reliable, it is recommended to use the input AC
reactor that effectually suppresses external surge together with the DC reactor.
200V/11 to 45kW models and 400V/18.5 to 75kW models come with a built-in DC rector as
standard equipment.
* If you are using a 200V/55kW model or larger or a 400V/90kW model or larger, be sure to
connect a DC reactor. (No DC reactor is required when the inverter is powered from a DC
power supply.)
(3)
EMC Directive
compliant noise
reduction filter
(EMF3-*****)
If EMC filter is installed in proper connection, the inverter has consistency with EMC
commands. 200V/0.4kW to 200V/7.5kW models and 400V/0.75 to 400V/630kW models come
standard with built-in noise filters. The effectiveness of the built-in filter can, however, be
increased by adding an EMC filter.
(4)
Braking resistor
Braking unit
To be used to shorten deceleration time for the reason of frequently operated quick
deceleration and suspension or high inertia load. This increases consumption of
regenerative energy in dynamic braking.
For 250kW and above inverter, it requires the braking unit.
(5)
Motor end surge voltage
suppression filter
(for 400 V models only)
In a system in which 400 V class general motor is driven by a voltage PWM type inverter
using a high-speed switching device (IGBT, etc.), surge voltage depending on cable constant
may cause deterioration in insulation of motor winding. Take measures against surge voltage
such as use of insulation-reinforced motor, installation of AC reactor, surge voltage
suppression filter, sine wave filter and so on in the inverter’s output side.
Note) Set the carrier frequency to 4.0~8.0kHz when sine wave filter is used.
(6)
Control power supply
backup option
The VF-PS1 supplies control power from the main circuit power supply in it. The optional
backup unit is designed to supply control power in the event the main circuit power supply
shuts down.
The optional backup unit can be used with both 200V and 400V models.
Unit type: CPS002Z
Effect
Harmonic suppression
Type of
reactor
Power-factor
improvement
200V, 3.7kW
or less
Other
combination
External surge
suppression
Input AC
reactor
Effective Effective Effective Effective
DC reactor Very effective Effective Very effective Not effective
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