Toshiba VF-A7 instruction manual Setup by analog input signals RX terminal, Motor

Frequency setting signal

7. 3. 3 Setup by analog input signals (RX terminal)

Connect voltage signal (0 to ±10 VDC) to the terminal RX so that the inverter can be run and stopped with external commands.

<Related parameters>

Title	Function	Adjustment range	Default value	Setup value
	Operation command mode selection	～	(Terminal)	(Terminal)
	Speed setting mode selection	～	(RR)	(RX)
	FM terminal meter selection	～		
	FM terminal meter adjustment	－	－	－
	Reference priority selection	～	()	()
	Analog input filter	(Disabled) to		
		 (Max. filter capacity)
	RX reference point #1	～ [%]		
	RX reference point #1 frequency	～ [Hz]		
	RX reference point #2	～ [%]		
	RX reference point #2 frequency	～ [Hz]		
	RX reference point #1 rate	～ [%]		
	RX reference point #2 rate	～ [%]		

■Run/stop setup

MCCB

CHARGE

Motor

To run and stop the inverter by external

Power

R/L1

ＶＦ－Ａ７

U/T1

IM

commands.

■Setup of frequency setting signal and

S/L2

V/T2

supply

T/L3

W/T3

running frequency characteristic

To set up frequency setting signal and

RES

characteristic of running frequency that are

S1

to be externally input to the terminal RX.

Frequency characteristic is set up at the

FLA

S2

two points of RX reference point #1

S3

()/frequency(), RX

FLB

reference point #2()/frequency

S4

(

).

FL



FLC

■Connection and calibration of

ST

frequency meter

F

Run／Stop

Connect a 1 mAdc full-scale DC current

P24

meter, 7.5 VDC full-scale DC voltmeter or

R

*

rectifier type AC voltmeter. For calibration

OUT1

of the meter, refer to the section 5.4.

FM

Frequency

OUT2

meter

Running frequency [Hz]

AM

Point 2



FP

↑

Forward





rotation

G/E

[%]

CC

CC

RX

VI II RR PP

Reverse



rotation

Point 1

↓

－１０～

＋１０Ｖｄｃ

－１００％

０％

１００％

（－１０V

～

０Ｖ

～

＋１０Ｖ）

*：Regardless of open/closed circuit between

R and CC terminals, run and stop operation is controllable.

Switching between forward rotation and reverse rotation is controllable by the terminals F/R and RX if reverse rotation disabling selection F311 is properly set up.

Refer to 6.13.7, for details

G-13