Appendix
RAMSES 718 P / RAMSES 718 S 106
6.12 Base set point and current set point
The base set point is the standard temperature for the comfort mode and the reference
temperature for reduction in standby and night modes.
The base set point can be defined directly at the rotary control,
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or via the object base set
point (see parameter function of the rotary control).
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The configured base set point (see base set point after loading application) is stored in the
object base set point and can be changed any time via the bus by sending a new value to this
object (only when function of the rotary control
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= manual offset).
After reset (restoration of the bus supply), the previously used base set point will be restored.
The current set point is the value that actually is used for control. It is the result of all
reductions or increases associated with the operating mode and control function.
Example: At a base set point of 22 °C and a reduction in night mode of 4 K, the current set point
(in night mode) is: 22 °C - 4 K = 18 °C. During the day (in comfort mode) the current set point is
22 °C (in heating mode).
The formation of the current set point on the basis of the base set point can be observed in the
block diagram on the next page:
The base set point on the left is specified via object, or set on the device.
The current set point is on the right, i.e. the value upon which the room temperature is
effectively controlled.
As you can see in the block diagram, the current set point depends on the operating mode (5)
and the selected control function (4).
The base set point limits (2) prevent an incorrect base set point from being specified at the
object. These are the following parameters:
• Minimum valid base set point
• Maximum valid base set point
If the set point is outside the configured values for frost and heat protection, because of a set
point offset, it is restricted to these values by the safety limits (11).
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Only RAMSES 718 P
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