Application-Specifi C Parameters - Siemens RDG Series Application Manual

Control sequence (P01)
Multifunctional inputs
(X1, X2, D1)
Control outputs (P46...P47)
Application-specifi c parameter
This parameter is used to set the required heating and/or cooling sequence and to
select automatic/manual changeover. Parameter P01 is preset as follow, depending
on the selected application:
– 2-pipe or single-duct application: P01: = 1 = cooling only
– 4-pipe application:
Sequence
Mode
Heating only
Parameter P01=0
An NTC sensor of type NTC such as QAH11.1 (AI) or a switch (DI) can be connected to
the input terminals. Input functionality can be freely confi gured. The factory settings are
as follows:
P38: Multifunctional input X1
P40: Multifunctional input X2
P42: Multifunctional input D1
Available function on X1, X2 and D1
Function of inputs
External/return air temperature (AI)
1
(not available for input D1)
2 Heating/cooling changeover (AI/DI)
3 Operating mode switchover (DI)
4
Dew point monitor (DI)
5 Enable electric heater (DI)
6 Fault (DI)
7 Monitoring input (digital)
8 Monitoring input (temperature)
– The RDG100.. offers two control outputs, each of either type On/Off, PWM or 3-position.
To select the required type, use the DIP switch and P46 (1st control output) and/or P47
(2nd control output).
– The RDG400.. for VAV applications offers two control outputs, DC 0...10 V and either
ON/OFF, PWM or 3-position. To select the required type use the DIP switch and P46
(reheater/cooler control output) and/or P47 (damper actuator, DC 0...10 V or 3-pos.).
P01: = 4 = heating and cooling
Manually select
Cooling only heating or
cooling mode
P01=1 P01=2
RDG range
External temperature sensor (1)
Heating/cooling changeover (2)
Operating mode switchover (3)
Temperature sensor input for
– External room temperature
– Return air temperature
– Floor temperature sensor to limit the heating output
Automatic heating/cooling changeover sensor or switch
Digital input to switch the operating mode to Economy
Digital input for a dew point sensor to monitor condensation
Digital input to enable/disable the electric heater via remote control
Digital input to signal a fault on the display (e.g. dirty air fi lter)
Digital input to monitor the state of an external switch via bus
(only for communicating variants)
Sensor input to monitor the state of an external sensor (e.g. QAH11.1)
via bus (only for communicating variants)
Automatic
Heating and
heating/cooling
cooling mode
changeover
P01=3 P01=4
RDF range
Operating mode switchover (3)
Heating/cooling changeover (2)
N/A
Description
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