Siemens Synco 700 RMZ785 Basic Documentation page 149

Example
Configuration
Communication settings
Example:
Notes
150 / 216
Siemens
Building Technologies
10.3.3 Consumers
Controller 1 controls a radiator. Heat demand in heat distribution zone 1 is sent to
the bus.
The relevant zone setting for communication is available from the hydraulic
diagram.
Plant
N.Y1
Main menu > Commissioning > Extra configuration > Aggregates > Heat demand >
Operating line
Controller 1
Main menu > Commissioning > Communication > Distribution zones >
Operating line
Heat distribution zone
10.3.4 Primary controller
Controller 1 is used to implement precontrol acquiring demand signals from the bus
and routing them to the bus. In addition, controller 1 is used to implement flow
temperature precontrol. In this process, control is started with digital output "d" and
analog output "a" is used to shift the setpoint in dependence of the current heat
demand from the bus.
 The setpoint cannot be directly provided to the controller. This functionality is
covered by the RMU710B, basic type C for a refrigeration primary controller or
by the RMH760 for a heating circuit primary controller.
 Parameterize function block "Motor" with a switch-off delay of e.g. 1 min. to
avoid unnecessary switching of the pump (at very low demand).
 Rather than the primary controller shift with analog output of the heat demand
block described here, outside temperature-dependent shift is possible also.
Switching and monitoring device RMS705B
H/C demand, H/C changeover
Configuration diagram
N.X1
°C
N.X1
N.Y1
Range
----, Sequence 1
Range
1...31
Contrl.
A
Setting
Sequence 1
Setting
1
CE1P3124en
01.04.2010