Yaskawa VS-616G5 Series Revision F Programming Manual Manual de usuario descargar pdf (Pagina 29)

VS-616G5 Programming Manual 29

V/f V/f w/PG

Open Loop

Vector

Flux

Vector

B9 Zero Servo

The zero servo function is enabled when the multi-function contact input is set to zero servo command

(H1-__ = “72”). The motor position is then memorized when motor speed feedback is less than the

zero speed level (B2-01).

Setting Range: 0 to 100

Factory Default: 5

Sets the zero-servo position loop gain. When adjusting the gain, the higher the setting, the quicker the

response. However, if the gain is set too high, it can cause overshoot and a possible runaway condition.

Setting Range: 0 to 16383 pulses

Factory Default: 10 pulses

Sets zero servo bandwidth in units of one pulse. During zero servo control, the multi-function contact

output (H2-__ = “33”) is closed until the number of pulses (or bandwidth) is completed. Then the con-

tact output opens.

B9-01 Zero Servo Gain Zero Servo Gain

- - - A

B9-02 Zero Servo Bandwidth Zero Servo Count

- - - A

L2-04

Figure 10 Timing Diagram of Energy Saving Function

Fref ≥ B8-02

FWD

Energy

Saving

Command

(Multi-function input

setting = “63”)

Fout

Vout

V/f Pattern × Energy Saving Gain (B8-01)

Figure 11 Zero Servo Position Loop

(Position Ref.)

B9-01

Motor Speed Feedback

Speed Reference

∫

Motor

Position

Deviation

Counter

Section B: Application Parameters

B9 Zero Servo

1 2 ... 24 25 26 27 28 29 30 31 32 33 34 ... 161 162

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