Toshiba VF-nC1 instruction manual Setting of contact input terminal function, Connection method

E6581090

• Function

These parameters are used to specify a function for each individual input terminal. With these

parameters allowing selection from among 45 functions for each input terminal, you can design

a system with great flexibility. (For H (input terminal selection 5), you can make a

selection from among 13 functions.)

*1 Using the H parameter, you can select a function between analog input (frequency

command input) and contact input for the VI/S3 terminal. The VI/S3 terminal is set by default

as a voltage signal input terminal. When using the VI/S3 terminal as a contact input terminal,

you need to set H to 2 (contact input enabled), and then to specify a contact input

function for it, using H, because it is set by default as a voltage signal input terminal. Note: Do not set H parameter if VI/S3 terminal is not used as contact input.

■Setting of contact input terminal function

	Terminal	Title	Function		Adjustment	Default setting
	symbol				range
	–	H	Analog input/logic input function selection		0～2	0 (voltage input)
	–	H	Always active function selection (ST)			1 (standby)
	F	H	Input terminal selection 1 (F)		0~40, 49,	2 (forward run)
6
	R	H	Input terminal selection 2 (R)		54~57	3 (reverse run)
	S1	H	Input terminal selection 3	(S1)	(See	6 (preset speed 1)
	S2	H	Input terminal selection 4	(S2)	Section 11.)	7 (preset speed 2)
	The parameter	below is enabled only when H is set to 2.				–
	VI/S3	H	Input terminal selection 5	(VI/S3)	5～17	8 (preset speed 3)

Note 1: The H parameter (always active function selection) allows you to select a function you want to keep always active.

Note 2: The H parameter (input terminal selection 5 (VI/S3)) is enabled only when H is set to 2.

It is necessary to insert an adequate resistor* between P15 and VI/S3. (*Recommended resistance : 4.7kΩ-1/4W)

■Connection method

1)A-contact input

Inverter

Input terminal

CC

A-contact switch	In sink logic mode
	★This function is activated when the input and CC
	(common) terminals are short-circuited. This function is
	used to specify forward/reverse run or preset speed
	operation.

2) Connection with transistor output (Sink logic)

Inverter Input terminal

CC

Programmable controller

★Operation can be controlled by connecting the input and

CC(common) terminals to the output (non-contact switch) of a programmable controller. This function is used to specify forward/reverse run or preset speed operation.

Use a transistor that operates at 15Vdc-5mA.

*Interface between inverter and programmable controller

When an open collector output type programmable controller is being used for operation control, turning off the programmable controller with the inverter left ON causes a wrong signal to flow into the inverter, as shown in the figure below, because of a difference in control power potential. To avoid this, be sure to interlock the inverter and the programmable controller so that the programmable controller cannot be turned off when the inverter is on.

	Programmable controller		Inverter
			+15V
		External
Fuse blowout	P24	+24V power supply	Internal
detection circuit			+15V power supply
	COM
	Fuse
	F-4