Toshiba VF-AS1 instruction manual Application and functions of options, Acl

! E6581301

10.4Application and functions of options

Separate type options shown below are prepared for the inverter VF-AS1

￿			(2) DC reactor		(200kW models and larger)
			(DCL)
				(4) Braking resistor	(4) Braking resistor/Braking unit
No-fuse		(3) EMC filter for CE
breaker	Magnetic	compliance
Power supply (MCCB)￿	contactor				motor
	(MC)￿
		N.F	VF-AS1		IM
	(1) Input AC reactor			(5) Motor end surge voltage
				suppression filter (for 400V
	(ACL)￿
				models only)

(6)Control power supply backup option￿

	Sorts of separate-type options
No.	Option name				Function, purpose.
	Input AC reactor	To be used for improvement of input power-factor of the inverter power source, for reducing
	(ACL)	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
(1)		capacity inverter connected with the same distribution system.
						Effect
			Type of	Power-factor	Harmonic suppression		External surge
			reactor	improvement	200V, 3.7/4.0kW	Other	suppression
					or less	combination
			Input AC	Effective	Effective	Effective	Effective
	DC reactor(DCL)		reactor
			DC reactor	Very effective	Effective	Very effective	Not effective
		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
(2)		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.)
	EMC Directive	If EMC filter is installed in proper connection, the inverter has consistency with EMC						10
(3)	compliant noise	commands. 200V/0.4kW to 200V/7.5kW models and 400V/0.75 to 400V/500kW models come
	reduction filter	standard with built-in noise filters. The effectiveness of the built-in filter can, however, be
	(EMF3-*****)	increased by adding an EMC filter.
	Braking resistor	To be used to shorten deceleration time for the reason of frequently operated quick
(4)	Braking unit	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.
	Motor end surge voltage	In a system in which 400 V class general motor is driven by a voltage PWM type inverter
	suppression filter	using a high-speed switching device (IGBT, etc.), surge voltage depending on cable constant
(5)	(for 400 V models only)	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.
	Control power supply	The VF-AS1 supplies control power from the main circuit power supply in it. The optional
	backup option	backup unit is designed to supply control power in the event the main circuit power supply
(6)		shuts down.
		The optional backup unit can be used with both 200V and 400V models.
		Unit type: CPS002Z

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