Toshiba VF-A7 Setting and calibrating meters, ・Function, Terminal FM-related parameters, 

5.4 Setting and calibrating meters

 ： FM Terminal meter selection  ： FM Terminal meter adjustment

 ： AM Terminal meter selection

 ： AM Terminal meter adjustment

・Function

Inverter’s operation data is outputted to the FM terminal (AM terminal) as analog voltage signals. The “FM terminal-connected meter adjustment ” (AM terminal-connected meter adjustment ) parameter is used to calibrate the meter.

Note 1: The signal output from the FM and AM terminal is an analog voltage signal. (positive (+) side output. For signed data, an absolute value is output.)

Note 2: To the FM terminal, connect either a full-scale 0~1mAdc ammeter or a full-scale 0~7.5Vdc (or 10Vdc) voltmeter, if necessary. The FM terminal can also be used as a 0(4)~20mAdc output terminal. To the AM terminal, connect a full-scale 0-1mAdc ammeter.

Connect meters as shown below.

＜Connection to terminal FM＞

＜Connection to terminal AM＞

Meter : Frequency meter

Meter: Ammeter

ＦＭ

＋

(Default setting)

ＡＭ

＋

(Default setting)

ＶＦ－Ａ７

ＶＦ－Ａ７

ＣＣ

－

ＣＣ

－

The reading of the

The reading of the

frequency

meter

fluctuates

ammeter fluctuates during

during calibration.

calibration.

☆An frequency meter QS60T is optionally available.

☆Use an ammeter capable of measuring up to a current

[Terminal FM-related parameters]

1.5 times larger than the rated current

of the inverter.

Title

Function

Adjustment range

Adjustment level

Default setting

: Running frequency

(a)

: Frequency command

(a)

: Current

(b)

: DC voltage

(b)

: Output voltage

(b)

: After-compensation frequency

(a)

: Speed feedback (real-time value)

(a)

: Speed feedback (1 second filter)

(a)

: Torque

(b)

: Torque reference

(b)

: Internal torque reference

(b)

: Torque current

(b)

: Exciting current

(b)

: PID feedback value

(a)

: Motor overload factor (OL2 data)

(c)

FM terminal meter

: Inverter overload factor (OL1 data)

(c)



: PBr overload factor (PBrOL data)

(c)



selection

: PBr load factor (pulse duty)

(c)

: Input power

(e)

: Output power

(e)

: Peak output current

(b)

: Peak DC voltage

(b)

: Motor counter dummy PG

(d)

: Position pulse

(d)

: RR input

(c)

: VI/II input

(c)

: RX input

(c)

: RX2 input

(c)

: FM output

(c)

: AM output

(c)

: Fixed output for meters

－

: Analog output for communication

(c)

: Acc/dec torque removal

(b)

:Current (with filter)

(b)



FM terminal meter

－

－

adjustment

E-10