Pump Control And Twin Pumps - Siemens Synco700 RMK770 Documentation Handbook

Synchronization
pulse
Setting
Setting
Building Technologies
HVAC Products
For 3-position control, the actuator's current position is acquired by a stroke model. As
soon as the stroke model reaches 0 % or 100 % respectively, a synchronization signal
(continuous on pulse or continuous off pulse for 1.5 times the running time) is delivered
to the actuator, thus making certain it has reached the relevant position.
This synchronization pulse is repeated for 1 minute at 10-minute intervals.
If a position change is called for, the synchronization pulse will immediately be stopped.
5.8

Pump control and twin pumps

Every pump (main pump, boiler pump, system pump, heating circuit pump) can be
monitored with a flow switch.
Also, every pump can be a twin pump.
d d d
B
V
Q Q
The decision whether a pump is installed as a single or twin pump is made in the extra
configuration with the relevant function block (boiler sequence, boiler, primary con-
troller, heating circuit).
Main menu > Commissioning > Extra configuration > Boiler sequence manager > Outputs
Main menu > Commissioning > Extra configuration > Boiler ... > Outputs
Main menu > Commissioning > Extra configuration > Primary controller > Outputs
Main menu > Commissioning > Extra configuration > Heating circuit > Outputs
Operating line
...pump
...pump B
When, in addition to the pump, pump B is configured, a single pump becomes a twin
pump.
For this second pump, there is also a fault input available. The flow switch is used by
both pumps.
Main menu > Commissioning > Extra configuration > Boiler sequence manager > Inputs
Main menu > Commissioning > Extra configuration > Boiler ... > Inputs
Main menu > Commissioning > Extra configuration > Primary controller > Inputs
Main menu > Commissioning > Extra configuration > Heating circuit > Inputs
Operating line
[...pump] overload
[...pump B] overload
Flow signal pump
If a twin pump was configured, the relevant function block will show menu item "Twin
pump".
Boiler Sequence Controller RMK770
5 General functions, fundamentals
Adjustable values / remarks
Assign terminal
Assign terminal
Adjustable values / remarks
Assign terminal
Assign terminal
Assign terminal
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CE1P3132en
01.03.2005