Lenze EVS9332xP Bedienungsanleitung PDF herunterladen (Seite 88)

Function library

Positioning control

3.4.9 Travel profile generator and setpoints

3−60

EDSVS9332P−EXT DE 2.0

3.4.9.2 S−shaped ramps (S profile)

Purpose

Protection from damage of the drive components by reducing the jerk during acceleration and

deceleration.

Ruck

1234 5 6 7 89

VTVEL

VTACC

C1256 C1256

max

tr tr

9300pos002

VTVEL =

+ VTACC =

− VTACC =

Traversing speed

Acceleration

Deceleration

Fig. 3−23 S−shaped ramps (S profile)

1. Standstill 6. Deceleration with set jerk

2. Deceleration with set jerk 7. Deceleration with VTACC

3. Acceleration with VTACC 8. Reduce deceleration with set jerk

4. Reduce acceleration with set jerk 9. Drive in targetposition

5. Traversing with VTVEL

With the S profile acceleration and deceleration processes are started smoothly. The defined

acceleration is only reached at the end of the jerk time.

– A slower acceleration always leads to a longer positioning time − compared to the

time−optimised L profile.

– Set jerk time (T

) via C1256.

corresponds to the time when the max. acceleration a−max (C1250) is reached. The actual

jerk time tr decreases according to the actual accelerationa:

 + T



max

 ³ t

 + C1256

VTACC[%]

100%

– Reducing the jerk or increasing the jerk time (t

r(RED)

) can be set via the input

POS−JERK−RED" (default setting 100%).

r(RED)

 + t



100%

POS−JERK−RED

1 2 ... 83 84 85 86 87 88 89 90 91 92 93 ... 333 334

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