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Function library, Function blocks – Lenze EVS9332xK User Manual

Page 316

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Function library

Function blocks

3.2.89

Position switch points (SPC)

3−288

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EDSVS9332K−EXT EN 4.0

3.2.89.3

Dead time

This function is only available for FB SPC2.

Purpose

Delayed activation of downstream components (e.g. injection nozzles).

Function

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The dead time is selected under C1657.

– This setting is only possible for SPC2−STAT1 ... SPC2−STAT4.

Assignment of codes and outputs:

Code

Subcode

Output FB SPC2

C1657

1

SPC2−STAT1

2

SPC2−stat2

3

SPC2−stat3

4

SPC2−stat4

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The dead time has an effect on the switching points and the hysteresis.

Positive dead time

SP2-STATx

HIGH

LOW

SP2-STATx

HIGH

LOW

INx-1

INx-2

SP2-L-IN

INx-1

INx-2

SP2-L-IN

Travel direction

Travel direction

(positive dead time)

(positive dead time)

Tdead

Tdead

Tdead

Tdead

9300kur094

Fig. 3−236

Function of the positive dead time for different travel directions

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With a positive dead time, the switching of the output is advanced by the time set.

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