Adjustment of the control principle depending on the heating system

With two-point control, the output remains switched on until the configured setpoint temperature is exceeded by approx. 0.5 °C. The output is not switched on again until the temperature goes below the setpoint by approx. 0.5 °C. As most heating systems are very sluggish, temperature overshoots can occur with this control.

The pulse width-modulated regulation is optimised for electrothermal valve drives, e.g. TSA 230 NC WW. This means that the output is not continuously activated, but for a certain time (pulse width), which depends on the temperature difference between the setpoint and actual temperature. With this method, the actual temperature is increasingly approaching the setpoint temperature. The cycle time is 15 minutes.