Siemens Synco 200 - Room Mode Selection Via Digital Inputs

6.2 Room mode selection via digital inputs
This feature provides for intervention in the current program without having to
make any changes at the controller itself. To activate this function, you have to
configure the appropriate digital inputs.
Operating principle
Mode switching via HMI (operation) is not possible.
Note
The following settings are required depending on the desired function:
RLU232 and RLU236
Function Setting Value
Switching between
Comfort / Protection
Digital input D1, hard
wired
Permanently
configured
Switching between
Comfort / Economy
Digital input D2, hard
wired
Permanently
configured
D1 D2 Operating mode Function
0 0 Comfort Comfort is the operating mode for the
occupied room. The room state is within the
comfort envelope in terms of temperature,
humidity, etc.
0 1 Economy Economy is an energy-saving operating mode
for the room if Comfort mode is not required
for a given period. In Economy mode, the
control process operates with setpoints that
may differ from the Comfort mode setpoints.
Switching to Economy mode is usually done
via an external time program
1 0 Protection Protection is an operating mode in which a
plant is only started to ensure that the building
and equipment are protected against frost
1 1 Protection See above
• If there is no wire connected to digital input D1, then D1 = 0 Notes
• If digital input D1 is set to Protection, Comfort / Economy changeover is
deactivated
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Siemens Universal Controllers RLU2… CE1P3101en
Building Technologies Operating modes 29.08.2008