Sp-40 vt level, Sp-41 energy savings min. magnetization, Sp-42 energy savings min. frequency – GE Industrial Solutions AF-650 GP General Purpose Drive Programming Guide User Manual

Page 82: 3 sp-3# current limit ctrl, 4 sp-4# energy savings

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SP-26 Trip Delay at Drive Fault

Range:

Function:

If value = 0, protection mode is disabled

NOTE

It is recommended to disable protection
mode
in hoisting applications.

SP-29 Service Code

Range:

Function:

0

*

[-2147483647 - 2147483647]

For internal service only.

3.9.3 SP-3# Current Limit Ctrl.

Parameters to configure the Current Limit Control which is
activated when the motor current, and thus the torque, is
higher than the torque limits set in F-40 Torque Limiter
(Driving)
and F-41 Torque Limiter (Braking).

SP-30 Current Lim Ctrl, Proportional Gain

Range:

Function:

100 %

*

[0 - 500 %] Enter the proportional gain value for the

current limit controller. Selection of a high

value makes the controller react faster. Too

high a setting leads to controller

instability.

SP-31 Current Lim Ctrl, Integration Time

Range:

Function:

0.020 s

*

[0.002 - 2 s] Controls the current limit control

integration time. Setting it to a lower

value makes it react faster. A setting too

low leads to control instability.

SP-32 Current Lim Ctrl, Filter Time

Range:

Function:

1.0 ms

*

[1 - 100 ms]

SP-35 Stall Protection

Option:

Function:

SP-35 Stall Protection is active in Flux mode only.

[0]

Disabled Disables stall protection in field-weakening flux

mode and might cause the motor to be lost.

[1]

*

Enabled

Enables stall protection in field-weakening flux

mode.

3.9.4 SP-4# Energy Savings

Parameters to configure the energy optimization level in
both the Variable Torque and Energy Savings modes.

SP-40 VT Level

Range:

Function:

66 %

*

[40 - 90

%]

NOTE

This parameter cannot be adjusted while
the motor is running.

Enter the level of motor magnetisation at low

speed. Selection of a low value reduces

energy loss in the motor, but also reduces

load capability.

NOTE

This parameter is not active when P-20 Motor Construction
is set to [1] PM non salient SPM.

SP-41 Energy Savings Min. Magnetization

Range:

Function:

40 %

*

[40 - 75 %] Enter the minimum allowable magnetisation

for Automatic Energy Savings. Selection of a

low value reduces energy loss in the motor,

but can also reduce resistance to sudden

load changes.

NOTE

This parameter is not active when P-20 Motor Construction
is set to [1] PM non salient SPM.

SP-42 Energy Savings Min. Frequency

Range:

Function:

10 Hz

*

[5 - 40 Hz] Enter the minimum frequency at which the

Automatic Energy Savings is to be active.

NOTE

This parameter is not active when P-20 Motor Construction
is set to [1] PM non salient SPM.

SP-43 Motor Cosphi

Range:

Function:

0.66

*

[0.40 -

0.95]

The Cos(phi) setpoint is automatically set for

optimum Automatic Energy Savings

performance. This parameter should normally

not be altered. However in some situations it

may be necessary to enter a new value to

fine-tune.

Parameter Descriptions

AF-650 GP Programming Guide

DET-618C

81

3

3

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