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Siemens Building Technologies
Basic Documentation RVP540 / RVP550
CE1P2488en
HVAC Products
Description of the heating engineer settings
18.10.2002
4.262 Operating action of voltage signal at input E1
•
The operating action of the input can be matched to the type of output signal deliv-
ered by a device of other manufacture
•
More flexibility when using non-Siemens products (both operating actions can be
considered)
This function enables the operating action of input E1 to be matched to the operating
action of a device of other manufacture.
Setting range
Unit
Factory setting
0 / 1
–
1
Entry:
0
0 V switches on
1
230 V switches on
Output P1 (PWM)
4.263 Function selection P1
•
Output P1 can be assigned to different pumps
•
Possibility of controlling pulse-width-modulated pumps
•
Control of voltage-modulated pumps with the help of ancillary equipment
The pulse-width-modulated (PWM) output can be assigned either to the solar pump,
the pump of the wood-fired boiler or the heating circuit pump.
The relay terminal connections of the relevant pump in that case do not change; they
will only be complemented by the PWM control line.
Setting range
Unit
Factory setting
1...4 –
1
According to the setting, output P1 is assigned to one of the following pumps:
1
Solar pump Q5 / K9
Output P1 is assigned to the solar pump defined by the partial diagram.
2
Pump Q10 of the wood-fired boiler
Output P1 is assigned to the pump of the wood-fired boiler.
3
Heating circuit pump Q2
Output P1 is assigned to the heating circuit pump.
4
Reserved
With the present line of controllers, this setting is inactive.
Output P1 makes possible the control of variable speed pumps with a pulse-width-
modulated control signal. The frequency of the PWM signal is 2400 Hz.
The PWM percent figure gives the sampling ratio.
Benefit
Description
Setting
Benefit
Description
Setting
Assignment
Effect
