WEST 8800 - 4.3 Set-point processing

4.3 Set-point processing
The set-point processing structure is shown in the following picture:
4.3.1 Set-point gradient / ramp
To prevent set-point step changes, parameter
r set-point r r.SPcan be adjusted
to a maximum rate of change. This gradient is effective in positive and negative
direction..
With parameter r.SP set to OFF (default), the gradient is switched off and
set-point changes are realized directly.
(for parameter: see page48 )
Configuration level
Set-point processing 48 8800 process controller
0
1
Ü
Xeff
SP.2
SP.E
Internal set-point
Programmer
*
Ö
SP.Hi
SP.Lo
r.SP
-LED
external
set-point
Limiting
Ramp
2nd
set-point
Effective
set-point
Ü
+
+
8
9
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:
Ü
*
Ö
: int/ext-setpoint switching
: configuration
: / switching
SP.Fn
SP SP.2
WEST
8800
°C
°F
Process Controller