West Control Solutions KS 50-1 - Manual (Page 38)

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.SP can be adjusted to
a maximum rate of change. This gradientis effective in positive and negative di-
rection..
With parameter r.SP set to OFF (default), the gradient is switched off and
set-point changes are realized directly.
(for parameter: see page )
4.4 KS50-1 cooling functions
With KS50-1, configuration parameter CYCL (ConF/ Cntr/ CYCL) can be
used for matching the cycle time of 2-point and 3-point controllers. This can be
done using the following 4 methods.
4.4.1 Standard (
CyCl= 0 )
The adjusted cycle times t1 and t2 are valid for 50% or -50% correcting varia-
ble. With very small or very high values, the effective cycle time is extended to
Configuration level
Set-point processing 38 KS50/52-1
10
1
0
Ü
Xeff
SP.2
SP.E
0/4...20 mA
internal
set-point
*
Ö
125
126
SP.x run
Err
Ada
SP.Hi
SP.Lo
r.SP
- LED
external
set-point
INP2
Limitation
Ramp
2.set-point
effective
set-point
ù
Programmer
Start-up circuit
Boost
Index:
Ь
*
Ц : int/ext-setpoint switching
: configuration
:
/ switching
SP.Fn
SP SP.2
The ramp starts at process value
with the following switchings:
- int / ext-setpoint switching
-
/ switching
- Manual-/ Automatic switching
- at power on
SP SP.2