Toshiba VF-A7 instruction manual Inverter, Example of use Push-type operation stop

3) In case of connection with transistor output

Inverter

Input terminal

CC

Programmable controller

★The inverter can be controlled by connecting the input terminal with output (contactless switch) of a programmable controller. This input is used for forward rotation, reverse rotation, preset speed control, etc. Use a transistor that operates on 24VDC,5mA power.

＊Regarding interface between inverter and programmable controller In the case programmable controller of open collector output is used to control the inverter, if the programmable controller is turned off as the power supply to the inverter is on, such a wrong signal as shown in the following figure flows into the inverter because of difference in potential of control power. Be sure to provide the system with an interlock so that the programmable controller cannot be turned off while the inverter is turned on.

	Programmable controller	Inverter
		＋２４Ｖ
	External +24 V
Fuse blowout	Ｐ２４ power supply	Internal +24 V power
detector circuit		supply (inverter)
	ＣＯＭ
	Fuse

■Example of use - Push-type operation stop

F	START
S1	STOP
S2	F/R switch
CC

Operation: Press the START button.

Stop: Press the STOP button. Switch between forward and reverse

rotation:

Short circuit between S2 and CC.

[Parameter setting]

Symbol of

terminal

Title

Function

Adjustment

range

Setting value

F		Input terminal selection #1(F)		
			～	(PUSH-type run command)
S1		Input terminal selection #5(S1)		
			(Refer to	(PUSH-type stop command)
S2		Input terminal selection #6(S2)	page G-4)	
				(Forward/reverse selection)

G-3