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Building Technologies Division
Basic documentation LMV36...
CC1P7544en
Infrastructure & Citiies Sector
10 Connection to load controllers
25.09.2013
10 Connection to load controllers
The LMV36... system can be connected to different load controllers. The heat request
and the required burner output are determined in accordance with the priorities of the
different heat sources.
10.1 Controller-on contact X5-03 pin 1
This contact is given priority over all power sources. A heat request can be made only
when this contact is closed. The contact is safety-related and can also be used in
connection with controllers featuring an integrated temperature limiter function.
10.2 Load controller via BAC system X92
To control the LMV36... basic unit, the BAC system can predefine an output via a bus
system. The BAC system is connected to the basic unit via the X92 interface.
Burner startup can take place only when contact X5-03 pin 1 is closed (load controller
(LR) On / Off).
For more detailed information about the connection of BAC systems, refer to chapter
Connection to superposed systems
in this document and to the Modbus User
Documentation (A7541).
Minimum positioning step
To avoid unnecessary positioning steps of the actuators when the predefined target
output varies, a minimum positioning step can be set. The basic unit changes the output
only if the change in target output exceeds the minimum positioning step. The minimum
positioning step only becomes active in modulating operation.
No. Parameter
123.0 Minimum output positioning step: Output building automation