Toshiba VF-PS1, VF-AS1 instruction manual 

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2.1.1.Switching circuit connection diagram, Time chart, Parameter settings

	Inverter protective		Commercial power switching
F L			frequency hold time
	action signal	Commercial power			Speed detection time
				
		switching frequency
FLA	FLC
		
	FLX			Frequency after speed is
		Setting frequency		detected
(Commercial
	(Inverter)	0Hz
power)				Inverter-side switching
	S3
		P24-OUT1(RY1)
				wait time *2
		for inverter run	ON			ON
S3		output		Commercial power
		P24-OUT2(RY2)		switching wait time 
RY1(Inverter)	MC2	for commercial		ON
		power run output
		Commercial power
MC2	MC3	run switching signal		ON
		S3-CC
RY2(Commercial		Run signal	ON			ON
power)		F-CC
	MC1
		Stand-by signal	ON
MC3		ST-CC
	F
			Inverter run	Commercial power run		Inverter run

Title	Function	Adjustment range	Setting value
	Output signal selection of commercial	0 to 3	2 or 3
	power/inverter switching
	Commercial power/inverter switching	0 to 	Power supply frequency
	frequency
*3	Inverter side switching waiting time	0.1 to 10.0 seconds	Different for each model
*3	Commercial power side switching waiting	0.37 to 10.0 seconds	0.62
	time
	Commercial power switching frequency	0.1 to 10.0 seconds	2.0
	holding time
*1	Input terminal selection #6 (S2)	0 to 135	20
			(Emergency stop)
			102
	Input terminal selection #7 (S3)	0 to 135	(Commercial power run
			switching)
			46
	Output terminal selection #1 (OUT1)	0 to 119	(Commercial power/inverter
			switching output 1)
			48
	Output terminal selection #2 (OUT2)	0 to 119	(Commercial power/inverter
			switching output 2)

*1:Be careful about Items 5 and 7 in 2.2, “Precautions.”

*2:Due to internal processing timing, inverter-side wait time become 0.5 second longer than the setting value of  *3: and  are included the operation time of the relay and the magnet contactor.

In almost all cases, it is not necessary to change these parameter settings.

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