Toshiba VF-FS1 instruction manual Fla, Flb, Flc

					E6581381
	Terminal	Input/output	Function	Electrical	Inverter internal circuits
	symbol			specifications
			Multifunction programmable relay contact	250Vac-1A
			output.
				(cosφ=1)
	FLA		Detects the operation of the inverter's
				: at resistance load
	FLB	Output	protection function.
				30Vdc-0.5A
	FLC		Contact across FLA-FLC is closed and FLB-
				250Vac-0.5A
			FLC is opened during protection function
				(cosφ=0.4)
			operation.
2
			Multifunction programmable relay contact	250Vac-1A
			output.
				(cosφ=1)
			Standard default settings detect and
	RY			: at resistance load
		Output	output low-speed signal output
	RC			30Vdc-0.5A
			frequencies.
				250Vac-0.5A
			Multifunction output terminals to which two
				(cosφ=0.4)
			different functions can be assigned.

■SINK (Negative) logic/SOURCE (Positive) logic (When the

inverter's internal power supply is used)

Current flowing out turns control input terminals on. These are called sink logic terminals.

The general used method in Europe is source logic in which current flowing into the input terminal turns it on.

Sink logic is sometimes referred to as negative logic, and source logic is referred to as positive logic. Each logic is supplied with electricity from either the inverter's internal power supply or an external power supply, and its connections vary depending on the power supply used.

<Examples of connections when the inverter's internal power supply is used>

Slide switch SW4:SINK

Sink (Negative) logic

24VDC

Output F

Common CC

ProgrammableInverter controller

Slide switch SW4:SOURCE

Source (Positive) logic

Input		24VDC
	Common	P24	Input

Output F

ProgrammableInverter controller

B-8