Chapter 4 – Function Settings

3) V/F + PG control

If FU2-39 [control mode] is set to V/F with PG (encoder) feedback using SUB-B or SUB-D boards, the control type is automatically changed to V/F + PG. The following parameters should be set accordingly to enable PG feedback using SUB- B or SUB-D boards.

Parameter Name

Code

Description

 

 

 

Usage of Pulse Input

 

Defines the use of pulse input signal with SUB-B or SUB-

EXT-12

D mounted. This parameter should be set to 1 {Feed-

Signal

 

back}.

 

 

 

 

 

Pulse Input Signal

EXT-15

Three types of input signal settable;

Selection

(A+B), A, -(A+B)

 

Encoder Pulse

EXT-16

Defines the number of encoders of the motor.

Number

 

 

P-Gain for ‘Sub-B’

EXT-22, EXT-23

PI gains for PI controller during PG operation

I-Gain for ‘Sub-B’

 

 

 

 

 

Slip Frequency for

EXT-24

Setting as a percent of FU2-32 [Rated Motor Slip]

‘Sub-B’ Board

 

 

 

 

 

4) Slip compensation

operation is done via Slip compensation if FU2-39 is set to 1 {Slip compen}. This control keeps motor speed constant regardless of load change.

5) Auto-tuning of motor constant

This parameter enables auto-tuning of the motor constants. If set to 1 {All mode}, tuning type varies according to what control mode is set in [FU2-39]. Auto-tuning can be done in two ways – one is motor non-rotation mode, the other is motor rotation mode.

Auto-tuning by non-rotation mode: Rs+Lsigma

Auto-tuning by rotation mode : All, Enc Test, Tr

Before performing Auto-tuning, set motor rating, motor parameter in common setting and select the desired control mode in FU2-39 [control mode selection]. However, when auto-tuning parameters related to encoder, detail functions settings of vector control should be pre-defined. If Enc Test, Tr and control mode are set to vector control, Sub-B or Sub-D board should be mounted.

Parameter Name

Code

Description

 

 

 

Auto-tuning

FU2-40

No, All, Rs+Lsigma, Enc Test, Tr

 

 

 

Parameter value

FU2-34,

Tuned value monitoring

(no-load current, stator/rotor resistance, leakage

display

FU2-41 ~ 44

inductance, rotor filter time constant)

 

 

4-2

Page 48
Image 48
HP 30 30 manual Function Settings F + PG control, Slip compensation, Auto-tuning of motor constant