2.5Calibrating sensors
The connected sensors are calibrated in the configuration level. The following applies:
FB16 = ON, select “P1000“: FB16 = ON, select “ntc“: FB16 = OFF:
Pt 1000 and Pt 100 sensors NTC and Pt 100 sensors
PTC and Pt 100 sensors (default setting)
The resistance values of the sensors can be found on page 98.
If the temperature values displayed at the controller differ from the actual temperatures, the measured values of all connected sensors can be changed or readjusted. To calibrate a sensor, the currently displayed sensor value must be changed such that it matches the temperature (ref- erence temperature) measured directly at the point of measurement.
Perform the calibration in function block FB33. The function block FB33 always remains activated.
Proceed as follows:
Switch to the parameter level.
Display: Time, 
blinks
Switch to the configuration level. |
|
Display: Current system code number (Anl), | blink |
Select function block level 24 to 47.
Select function block FB33.
Activate function block FB33.
Display: 0 0 0 0 0
Enter currently valid key number.
Display: Flow sensor, measured temperature
Flow sensor (VF1)
If necessary, select other sensors that you want to calibrate.
Outdoor sensor (AF)
Room sensor (RF)
Return flow sensor (RüF1)
20EB 5476 EN
