Af-60 lp™ micro drive programming guide, 3-4* accel/decel 1 – GE Industrial Solutions AF-60 LP Micro Drive User Manual

Page 28

Advertising
background image

[21]

Keypad Potentiometer

Use signals from Keypad potentiometer as reference.

3-17 Reference 3 Source

Option:

Function:

See Par. 3-15 for description.

[0]

No Function

No reference signal is defined.

[1]

Analog Input 53

Use signals from analog input 53 as reference.

[2]

Analog Input 60

Use signals from analog input 60 as reference.

[8]

Pulse input 33

Use signals from pulse input as reference, see par. 5-5*.

[11]

*

Local Bus Reference

Use signals from local bus as reference.

[21]

Keypad Potentiometer

Use signals from Keypad potentiometer as reference.

3-18 Relative Scaling Reference Source

Option:

Function:

Select the source for a variable value to be added to the fixed value defined in par. 3-14, Preset Relative Reference.

[0]

*

No Function

The function is disabled

[1]

Analog Input 53

Select analog input 53 as relative scaling reference source.

[2]

Analog Input 60

Select analog input 54 as relative scaling reference source.

[8]

Pulse Input 33

Select pulse input 33 as relative scaling reference source.

[11]

Local Bus Reference

Select local bus ref. as relative scaling reference source.

[21]

Keypad Potentiometer

Select Keypad potentiometer as relative scaling reference source.

4.4.4. 3-4* Accel/Decel 1

A linear ramp is characterized by ramping up at a constant speed until the desired motor speed has been reached. Some overshoot may be experienced when

reaching speed, which may cause speed jerks for a short while before stabilizing.

An S-ramp accelerates more smoothly thus compensating for jerks when the speed is reached.

See the below figure for a comparison of the two ramp types.

Accel/Decel Time:

Acceleration time from 0 to nominal motor frequency (par. 1-23).

Ramp down: Deceleration time from nominal motor frequency (par. 1-23) to 0.

AF-60 LP™ Micro Drive Programming Guide

27

4

Advertising