Basic Documentation

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Siemens Modular Heating Controller RMH760B CE1P3133en
Building Technologies 13 Function block miscellaneous 2017-09-29
− For forwarding via data bus. This enables the measured value to be used in
heating circuits 2 and 3 also. The factory setting heating circuits 2 and 3 use is the
outside sensor at function block "Miscellaneous"
• The outside sensors at function blocks "Heating circuit 2" and "Heating circuit 3" can
be used as follows:
− As a reference variable for flow temperature control and for other functions in
connection with heating circuits 2 and 3
− For forwarding via data bus
The outside temperature can be delivered by different sources:
• The outside sensor is locally connected to a terminal
• The outside temperature signal is delivered via data bus
The following variants are available:
Variant
Effect
Diagram
Outside temperature
locally at the terminal.
Communication outside
temperature not active
Plant operates with its own outside
temperature.
No impact on the bus
T
Outside temperature
locally at the terminal.
Communication outside
temperature active
Plant operates with its own outside
temperature. The outside
temperature is also made available
via bus to other controllers or other
applications in the same controller
T
No outside temperature
locally.
Communication outside
temperature active
Plant operates with the outside
temperature delivered via bus by
some other controller. Heating
circuits 2 and 3 operate per default
according to this variant
3140Z10
T
No outside temperature
locally.
Communication outside
temperature not active
Controller has no outside
temperature
T
The type of sensing element of the outside sensor can be selected under … > Settings >
Inputs at the assigned terminal. Default setting is an LG-Ni 1000 sensor.
Connection of an NTC575 sensor (e.g. QAC32) is possible.
Main menu > Commissioning > Settings > … or
Main menu > Settings > Inputs
Operating line
Range
Factory setting
RMH760.X… (or RMZ78…)
Ni1000 / 2×Ni1000 /
T1 / Pt1000 / 0…10 V /
NTC575
Ni1000
The outside temperature can be transmitted to other controllers via bus, or it can be
received from the bus. For that purpose, communication must be activated and an
outside temperature zone set. An outside temperature zone identified by "----" means
that the outside temperature on the bus is inactive.
To enable different outside temperature signals to be distributed via bus (e.g. outside
temperature for heating zone North, outside temperature for heating zone South), they
must be assigned to own outside temperature zones. For the required settings, refer to
section 0 " Weather data".
Connection choices
Outside temperature
via bus