C00971 | vfc: limitation v/f +encoder, C00972 | vfc: vp v/f +encoder, C00973 | vfc: ti v/f +encoder – Lenze 8400 motec User Manual

Page 405: C00975 | vfc-eco: vp, C00975, And res, C00972, C00973, C00971/1, C00971/2

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Lenze · 8400 motec · Reference manual · DMS 4.1 EN · 08/2013 · TD05

405

11

Parameter reference

11.2

Parameter list | C00971

_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

C00971

C00972

C00973

C00975

Parameter | Name:

C00971 | VFC: Limitation V/f +encoder

Data type: UNSIGNED_16

Index: 23604

d

= 5C34

h

From version 02.00.00

Limitation of the output frequency of the slip regulator and limitation of the injected stator frequency for the V/f

control (

VFCplus+encoder

)

Setting range

(min. value | unit | max. value)

0.00

Hz

100.00

Subcodes

Lenze setting

Info

C00971/1

10.00 Hz

Maximum output / correcting variable of the slip

regulator

• The slip regulator output is limited to the value set

here in motor/generator mode.

• It is recommended to select 1 to 3 times the slip

frequency of the motor as limit value.

C00971/2

100.00 Hz

Maximum frequency deviation between the rotational

frequency (speed) measured mechanically by the

encoder and the injected stator frequency.

• A limitation may e.g. avoid overcurrent interruption

when traversing to a fixed limit stop.

Read access  Write access  CINH  PLC STOP  No transfer  COM  MOT

Scaling factor: 100

Parameter | Name:

C00972 | VFC: Vp V/f +encoder

Data type: UNSIGNED_16

Index: 23603

d

= 5C33

h

From version 02.00.00

Proportional gain of the slip regulator for V/f control (

VFCplus+encoder

)

• The gain must be selected depending on the drive system and the sensor resolution (range: 0.005 ... 5).

• A high gain requires a high number of increments.

Setting range

(min. value | unit | max. value)

Lenze setting

0.000

Hz/Hz

64.000 0.100 Hz/Hz

Read access  Write access  CINH  PLC STOP  No transfer  COM  MOT

Scaling factor: 1000

Parameter | Name:

C00973 | VFC: Ti V/f +encoder

Data type: UNSIGNED_16

Index: 23602

d

= 5C32

h

From version 02.00.00

Integral time constant of the slip regulator for V/f control (

VFCplus+encoder

)

• In general, the time constant should be selected in a range of 20 ms (high dynamics) to 200 (low dynamics).

Setting range

(min. value | unit | max. value)

Lenze setting

0.0

ms

6000.0 100.0 ms

Read access  Write access  CINH  PLC STOP  No transfer  COM  MOT

Scaling factor: 10

Parameter | Name:

C00975 | VFC-ECO: Vp

Data type: UNSIGNED_16

Index: 23600

d

= 5C30

h

Proportional gain of the Cos-Phi controller for energy-saving V/f characteristic control (

VFCplusEco

)

Setting range

(min. value | unit | max. value)

Lenze setting

0.000

Hz/Hz

64.000 0.500 Hz/Hz

Read access  Write access  CINH  PLC STOP  No transfer  COM  MOT

Scaling factor: 1000

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