Siemens RWF55.50A9 - Page 47

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Building Technologies Division User Manual RWF55... CC1U7867en
Infrastructure & Cities Sector 7 Parameterization PArA 05.11.2013
The parameters are shown on the lower setpoint display (green) and their values on the
upper/actual value display (red).
7867z06/0612
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
q
0.0...999.9 0

Reference!
See chapter 5.6 Response threshold
(q)
Display of controller
parameters