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Siemens Building Technologies
Basic Documentation RVP540 / RVP550
CE1P2488en
HVAC Products
Description of the heating engineer settings
18.10.2002
4.265 Display of PWM output P1
Display of the actual value at the PWM output in %.
Display
Unit
0...100 %
4.266 Output test PWM signal P1
•
Output signal can be checked
For test purposes, a predefined and constant signal (percentage) can be delivered via
output P1.
Setting range
Unit
Factory setting
--- / 0...100
%
---
The settings have the following effect:
---
Output test is not activated
0...100
The selected value [%] is delivered via output P1
as a fixed output signal. The relay pertaining to the pump will also be en-
ergized.
When leaving the operating line, the output test will be deactivated.
Output Ux (DC 0…10 V)
4.267 Function selection output Ux
•
Control of voltage-modulated pumps
•
Output of a voltage-proportional demand for heat
The voltage-modulated output can be assigned either to the solar pump, the pump of
the wood-fired boiler or the heating circuit pump, or it can be used as an output for a
voltage-proportional demand for heat.
The relay terminal connections of the pumps in that case do not change; they will only
be complemented by the Ux control line.
Setting range
Unit
Factory setting
1...8 –
1
Output Ux makes it possible to control variable speed pumps with a voltage-modulated
control signal. According to the setting, output Ux is assigned to the following pump, or
provides the following function:
1
Speed of solar pump Q5 / K9
Output Ux is assigned to the solar pump defined by the partial diagram.
2
Speed of pump Q10 of the wood-fired boiler
Output Ux is assigned to the pump of the wood-fired boiler.
Description
Setting
Benefit
Description
Setting
Effect
Note
Benefit
Description
Setting
Effect
