The parameters are shown on the lower setpoint display (green) and their values on the
upper/actual value display (red).
78
66
z06/
091
1
Parameter Display
Value
range
Factory
setting
Remarks
Proportional band ¹
Pb1
1...9999 digit
10
Influences the controller’s P-action
Derivative time
dt
0...9999 s
80
Influences the controller’s D-action
With dt = 0, the controller has no D-action
Integral action time
rt
0...9999 s
350
Influences the controller’s I-action
With rt = 0, the controller has no I-action
Dead band (neutral
zone) ¹
db
0.0...999.9 digit
1
For 3-position output
Y
100%
-100%
db
W
X
7866d13/0911
Controlling element
running time
tt
10...3000 s
15
Running time of the positioning valve for use
with modulating controllers
Switch-on threshold
Heating controller ¹
HYS1
-1999...0.0 digit
-5
Reference!
See chapter 5.2
High-fire operation
Switch-off threshold
stage II
Heating controller ¹
HYS2
0.0...
HYS3
digit
3
Reference!
See chapter 5.2
High-fire operation
Switch-off threshold
Heating controller ¹
HYS3
0.0...9999 digit
5
Reference!
See chapter 5.2
High-fire operation
Switch-on threshold
Cooling controller ¹
HYS4
0.0...9999 digit
5
Reference!
See chapter 5.2
High-fire operation
Switch-off threshold
stage II
Cooling controller ¹
HYS5
HYS6
...0.0 digit
-3
Reference!
See chapter 5.2
High-fire operation
Switch-off threshold
Cooling controller ¹
HYS6
-1999...0.0 digit
-5
Reference!
See chapter 5.2
High-fire operation
Response threshold
0.0...999.9
0
Reference!
See chapter 5.5
Response threshold
(q)
¹
Setting of decimal place has an impact on this parameter
Note!
When using the RWF50… as a modulating controller only, or as a modulating
controller without the burner release function (1P, 1N), parameter
HYS1
must be set to
0
and parameters
HYS2
and
HYS3
must be set to their
maximum
values.
Otherwise, for example, when using default parameter
HYS1
(factory setting -5), the 3-
position controller is only released when the control deviation reaches -5 K.
Display of controller
parameters
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20089337
Summary of Contents for RWF 50.2
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