Art. No. ..5192KRMTSD
Art. No. ..5194KRMTSD
The following two images show 2-point feedback control for the mixed operating mode "Heating
and cooling", distinguishing between heating mode (figure 47) and cooling mode (figure 48).
The images take two temperature setpoints, a non-inverted command value output and an
automatic operating mode change-over. When the operating mode is changed-over via the
object, an upper hysteresis for heating and a lower hysteresis for cooling and be configured.
Figure 47: 2-point feedback control for mixed "Heating and cooling" mode with active heating
mode.
Figure 48: 2-point feedback control for mixed "Heating and cooling" mode with active cooling
operation.
The command value "1" or "0" will be output, depending on the switching status, if the
temperature exceeds or falls below the hysteresis limits or the setpoints.
i
It has to be pointed out that the message objects for heating and cooling will already
become active as soon as the temperature falls short of the temperature setpoint of the
active operating mode in case of heating or exceeds the temperature setpoint in case of
cooling. In this case the hysteresis is not being considered.
Page 107 of 309
Software "Room controller display compact module 146x11"
Functional description
