4 set-point processing 47, Set-point processing 47, 4 set-point processing – West Control Solutions N8840 User Manual

Page 47: Set-point

4.4 Set-point processing

The set-point processing structure is shown in the following picture:

Set-point gradient / ramp

To prevent set-point step changes, parameter

set-point

r.SP can be adjusted

to a maximum rate of change. This gradient is effective in positive and negative

direction..

With parameter r.SPset to OFF (default), the gradient is switched off and

set-point changes are realized directly.

(for parameter: see page 59 )

Configuration level

8840 profiler

Set-point processing

Xeff

SP.2

SP.E

Internal set-point

Programmer

SP.Hi

SP.Lo

r.SP

- LED

external

set-point

Limiting

Ramp

2nd

set-point

Effective

set-point

The ramp starts at process value with the following switchings:

- int / ext-setpoint switching

switching

- Manual-/ Automatic switching

- at power on

SP SP.2

Index:

: int/ext-setpoint switching

: configuration

switching

SP.Fn

SP SP.2

RUN

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8840

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