Siemens AVS75.39 Series User Manual page 173

Setpoint compensation
Time constant setp
compens
Central setpoint
compensation
Setpoint drop off delay
Siemens
Building Technologies
The controller calculates the difference between the current heat request to the
heat sources and the common flow temperature effectively measured by sensor
B10.
The previous heat request is adjusted upward by this differential and sent to the
generators as the new heat request.
Line no. Operating line
6116 Time constant setp compens
6117 Central setp compensation
6118 Setpoint drop delay
The common flow temperature (B10) is attenuated calculated. If required, the filter
time constant (B10) of central setpoint compensation can be adjusted.
Central setpoint compensation matches the setpoint of the heat source to the
required central flow temperature.
The setting limits the maximum readjustment, even in cases where greater
adaptations would be called for.
This function can only be implemented when using the common flow sensor (B10).
Prevents staged source from being switch off too quickly or can immediately shut
down a freely modulated source based on output control.
This way, the generators do not cool down since there is still a certain demand for
heat, allowing them to resume operation within short.
The drop off delay acts only when there is a setpoint change, but not when there is
no more request for heat.
User manual RVS43.345
The settings in detail
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CE1U2354en_021
2013-09-02