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E6581301
J-5
10
10.4 Application and functions of options
Separate type options shown below are prepared for the inverter VF-AS1
No-fuse
breaker
(MCCB)
N.F
motor
IM
Magnetic
contactor
(MC)
Power supply
(1) Input AC reactor
(ACL)
(3) EMC filter for CE
compliance
(2) DC reactor
(DCL)
(4) Braking resistor
VF
-
AS1
(5) Motor end surge voltage
suppression filter (for 400V
models only)
(6) Control power supply
backup option
(4) Braking resistor/Braking unit
(200kW models and larger)
Sorts of separate-type options
No. Option name Function, purpose.
(1)
Input AC reactor
(ACL)
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.)
(2)
DC reactor(DCL)
(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/500kW 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 200kW more 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-AS1 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
Type of
reactor
Effect
Power-factor
improvement
Harmonic suppression
External surge
suppression
200V, 3.7/4.0kW
or less
Other
combination
Input AC
reactor
Effective Effective Effective Effective
DC reactor Very effective Effective Very effective Not effective