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Siemens Switching and monitoring device RMS705B CE1P3124en
Building Technologies Appendix 01.04.2010
Signal converter
Min-Max-Average
(Section 9.1)
Configuration Functions
 Input
 Inputs split (Split)
 Min-Max-Average output
A…B
 Modulating output A…B
2 function blocks.
 5 inputs for min. max selection and average calculation.
 2 continuous signals DC 0…10 V.
Enthalpy calculator
(Section 9.2)
Configuration Functions
 Temperature input A…B,
Relative humidity input A…B
 Enthalpy A…B
 Absolute humidity A…B
 Dew point temperature
 Wet bulb temperature
 Enthalpy difference
Calculation of the following variables from temperature and relative
humidity:
 Enthalpy, absolute humidity, dew point temperature, Wet bulb
temperature, Enthalpy difference.
 Pressure correction for plant location (Elevation above sea level).
Signal doubler-inverter
(Section 9.3)
Configuration Functions
a
Ya Ya
Split-Inv
AB
 Input
 Modulating output A…B
For 2 continuous signals DC 0…10 V.
 "Positioning signal min“ and adjustable "Positioning signal max".
 Scaling of input signal (value low, value high).
 Settable inversion.
Heat demand, refrigeration demand, H/C changeover
Heat demand
(Section 10.1)
Configuration Functions
Contrl.
 Controller 1
 Controller 2
 Controller 3
 Primary controller
 Relay output
 Modulating output
 Acquire heat demand from bus (acquire valid heat demand in the set
zone).
 Pass on heat demand as digital output e.g. to control a central pump.
 Pass on heat demand as continuous output °C.
 Pass on demand signals to other distribution zone on KNX bus.
Refrigeration demand
(Section 10.2)
Configuration Functions
Contrl.
 Controller 1
 Controller 2
 Controller 3
 Primary controller
 Relay output
 Modulating output
 Acquire refrigeration demand from bus (acquire valid refrigeration
demand in the set zone).
 Pass on refrigeration demand as digital output e.g. to control a central
pump.
 Pass on refrigeration demand as continuous output °C.
 Pass on demand signals to other distribution zone on KNX bus.
Heating/cooling ch'over
(Section 10.4)
Configuration Functions
23
 2-pipe heating/cooling
system (
)
 H/C changeover input (
)
 Changeover with operating
mode selector (
)
 Changeover by date (
23
)
 Changeover of operating mode heating or cooling in 2-pipe systems.
 Preselection of heating/cooling on device generated or received as
signal via bus.
 Changeover by analog or digital input.
 Changeover with operating mode selector
 Changeover by date.