Art. No. ..5192KRMTSD
Art. No. ..5194KRMTSD
permanently below or above the actual temperature in the vicinity of the sensor. To determine
the temperature deviation, the actual room temperature should be detected with a reference
measurement using a calibrated temperature measuring device.
The parameter "Internal sensor calibration..." and/or "External sensor adjustment..." allows
configuration of the positive (temperature increase, factors: 1 ... 127) or negative (temperature
decrease, factors -128... -1) temperature calibration in levels of 0.1 K. Thus, the calibration is
made only once statically and is the same for all operating modes of the controller.
i
The measured value has to be increased, if the value measured by the sensor lies below
the actual room temperature. The measured value has to be decreased, if the value
measured by the sensor lies above the actual room temperature.
i
During room temperature control, the device always uses the adjusted temperature value
to calculate the command values. The adjusted temperature value is transmitted to the bus
via the "Actual temperature" object (see "Transmission of the actual temperature").
When determining the measured value using the internal and external sensor, the two
calibrated values are used to calculate the actual value.
If necessary, the unadjusted room temperature of the internal temperature sensor can
additionally be transmitted to the bus as an information value
(object "Actual temperature, unadjusted") and, for example, be evaluated in other bus
devices or displayed in visualisations.
i
Temperature adjustment only affects the room temperature measurement.
Transmission of the actual temperature
The determined actual temperature can be actively transmitted to the bus via the
2-byte "Actual temperature" object. The parameter "Transmission when room temperature
change by..." specifies the temperature value by which the actual value has to change in order
to have the actual temperature value transmitted automatically via the object. Possible
temperature value changes lie within a range of 0.1 K and 25.5 K. Setting to "0" at this point will
deactivate the automatic transmission of the actual temperature.
In addition, the actual value can be transmitted periodically. The "Cyclical transmission of the
room temperature" parameter determines the cycle time (1 to 255 minutes). The value "0" will
deactivate the periodical transmission of the actual temperature value.
Setting the "Read" flag on the "actual temperature" object makes it possible to read out the
current actual value at any time over the bus. It has to be pointed out that with deactivated
periodical transmission and deactivated automatic transmission, no more actual-temperature
telegrams will be transmitted".
Following the return of bus voltage, new programming via the ETS, the object value will be
updated according to the actual temperature value and transmitted on the bus. In case a
temperature value telegram has not been received from the external sensor via the object
"Received temperature value" when evaluating an external temperature sensor, only the value
provided by the internal sensor will be transmitted. If only the external sensor is used, then the
value "0" is located in the "Actual temperature" object after a reset. For this reason, the external
temperature sensor should always transmit the current value after a reset.
During room temperature control, the controller always uses the adjusted temperature value to
calculate the command values. The adjusted temperature value is transmitted to the bus via the
"Actual temperature" object. If necessary, the unadjusted room temperature can additionally be
transmitted to the bus as an information value via the object "Actual temperature, unadjusted"
and, for example, be displayed in visualisations. The object for the unadjusted temperature is
updated and transmitted at the same times as the "Actual temperature" object.
Page 168 of 309
Software "Room controller display compact module 146x11"
Functional description
