Siemens RVW26.000B27 Basic Documentation page 45

Programming level 0
Display
Interpretation
Programming level 1
Display
Interpretation
Siemens Building Technologies
HVAC Products
Operating mode
0 L o a d
0 A u x 1 P o s
1 A u x 2 P o s
Parameter Meaning
Load
Current burner output in %
Aux1Pos
Position of auxiliary actuator «AUX1»
Aux2Pos
Position of auxiliary actuator «AUX2»
Note:
Deviations of the «Load» value from the RVW25... over a longer period of time is an
indication of a fault of the digital info channel.
Configuring the system
1 A u x 1 A c t
9 A u x 2 A c t
1 A u x 1 T i
A u x 2 T i
Parameter Meaning
Aux1Act
Number of auxiliary actuators at the first extension channel (refer to chapter «Se-
lection of fuel»)
Setting range:
Factory setting:
Aux2Act
Auxiliary actuator at the second extension channel yes / no
If «Aux2Act» has been set to «off», no more «Aux2» parameters will appear on
the other programming levels
Setting range:
Factory setting:
Aux1Tim
Running time of auxiliary actuator 1 ¹)
Setting range:
Increment:
Factory setting:
Aux2Tim
Running time of auxiliary actuator 2 ¹)
Setting range:
Increment:
Factory setting:
¹)
The running time to be set is the period of time the actuator would require to move the poten-
tiometer from 0 V to 10 V. This means that the running time is defined by the speed of the
actuator and the electrical angle of the potentiometer. The running time is always to be
rounded up to the next higher practical value. The actuator running times of «Aux1 / Aux2»
may differ.
Example 1: actuator: SQM54.482A2
potentiometer: ASZ12.803
Running time to be set =
Example 2: actuator: SQM54.482A2
potentiometer: ASZ12.833
Running time to be set =
Electronic Air / Fuel Ratio Control System
15 Programming the RVW26...
m
m
1 / 2
1
on / off
off
30...60 s
5 s
30 s
30...60s
5 s
30 s
running time: 30 s / 90°
1000 W / 90°
R / °:
90° x 30 s
= 30 s
90°
running time: 30 s / 90°
R / °: 1000 W / 135°
135° x 30 s
= 45 s
90°
= 0 .
= 0 . 6 7
= 0 . 5 3
:
: o n
: 3 0
: 3 0
CC1P7873.1en
15.10.2002
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