Adjustable range for CPA output

All first both modules inputs shall have the following settings in the CARE properties tab:


Input

IO configuration

Characteristic

SetpointAdjustm

AI 0...10V with pull-up

Xlw_Conv_Percent_0to10V

ManualOverride

AI 0...10V with pull-up

Xlw_Conv_Percent_0to10V


The inputs "SetpointAdjustm" and "ManualOverride" automatically recognize the automatic and manual overrides and convert then into into the desired +...0... value for the output "ContrPtAdj".

During the manual “night” mode of the wall module, the value of the "ContrPtAdj" output is set to “0”.


The output range of "ContrPtAdj" can be defined between the low limit value of parameter CPA-01 and the high limit value of parameter CPA-02 (default 5...+5, conform to the scale division of the wall module).

The “day-extended”, and “auto” operation mode as well as the “night” situation are also automatically decoded from the "ManualOverride" value in order to provide the right code for the "FanSpeedCtrlSig" (FSC) and the "ManSwCond" (MSC) and  "ManSwAlarm" (MSA).


The values of the following table are true for the wall module jumper setting in the position W77xx.


ManualOverride

FanSpeedCtrlSig

ManSwCond

0,7 (auto)

from FanSpeedCtrlSig input

3

0,96 (night)

0

0

1,33

1

1

1,09

2

2

1,54

3 (when SYS-03 = 3)

4


Relative setpoint adjustment

The setpoint is defined in the time schedule and has a value different of "0".

The settings for the relative setpoint adjustment should be:


The values of the table will be different depending of the setting CPA-03 - linear or stepwise.


relative scale (Kelvin)

setpoint

nominal resistance

(Ohm)

input voltage

(V)

-5

9574

2.71

-4

8759.2

2.53

-3

7944.4

2.35

-2

7129.6

2.16

-1

6314.8

1.96

0

5500.0

1.75

1

4685.2

1.525

2

3870.4

1.28

3

3055.6

1.02

4

2240.8

0.73

5

1426.0

0.40

 

Absolute setpoint adjustment

The setpoint is defined only by the wall module. You have to set the time schedule value to "0"!

The settings for the absolute setpoint adjustment could be according to the setpoint wheel:


absolute scale (°C)

setpoint

nominal resistance

(Ohm)

input voltage

(V)

12

9958.0

2.71

13

9468.7

2.61

14

8979.3

2.51

15

8490.0

2.41

16

8000.7

2.31

17

7511.3

2.20

18

7022.0

2.09

19

6532.7

1.98

20

6043.3

1.87

21

5554.0

1.75

22

5064.7

1.63

23

4575.3

1.50

24

4086.0

1.365

25

3596.7

1.23

26

3107.3

1.08

27

2618.0

0.93

28

2128.7

0.76

29

1639.3

0.59

30

1150.0

0.4


Stepwise or linear control point conversion

The behaviour of the control point adjustment value can be selected via CPA-03. In case the parameter has the value 0 (linear), the control point adjustment value is linear between the selected range limits (CPA-01 and CPA-02). In case CPA-03 is 1 (stepwise), the interval that is given by CPA-01 and CPA-02 is divided into 10 equal steps and the control point adjustment is incremented/ decremented with this step size.


Description

Default value

CPA-01: output range low limit

-5 K

CPA-02: output range high limit

5 K

CPA-03: conversion; 0=linear, 1=stepwise

1