RAM 712 KNX
room thermostat for surface-mounted and flush-mounted installation
theben
Version: Dec-10 (subject to change) Page 53 of 65
6.3 Base setpoint value and current setpoint value
The
base setpoint value
is the standard temperature for comfort mode and the reference
temperature for reduction in standby and night modes.
The programmed basic setpoint value (see
base setpoint value after downloading the application
is stored in Object 0 and can be changed at all times via the bus by sending a new value to
The
current setpoint value
is the value that actually determines the control. It is the result of all
the operating mode reductions or increases depending on the control function.
Example:
At a base setpoint value of 22 °C and a reduction in night mode of 4K, the current setpoint value
(in night mode) is: 22 °C – 4K = 18°C. During the day (in comfort mode) the current setpoint
value is 22 °C (providing the cooling operation is not active).
The formation of the current setpoint value due to the basic setpoint value can be observed in the
block diagram on the next page.
The base setpoint value, specified via object 0, is on the left.
The current setpoint value 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 setpoint value depends on the operating mode
(5) and the control function (4) selected.
The base setpoint value limits (2) prevent an incorrect base setpoint value from being specified to
object 0. These are the following parameters:
•
Minimum valid base setpoint value
•
Maximum valid base setpoint value
The base setpoint value limits (2) prevent an incorrect base setpoint value from being specified to
See :
