MDT SCN-RT1UP.01 Technical Manual page 32

Technical Manual
Room Temperature Controller
With PWM control, the controller switches the manipulated variable according to the value
calculated during PI control, considering the cycle time. The manipulated variable is thus converted
into a pulse-width modulation (PWM).
PWM cycle time
The „PWM cycle time" serves the controlling for calculating the length of the on-pulse and the off-
pulse. This calculation occurs at the base of the calculated continuous value in percent. One PWM
cycle contains the time, which elapses from one switching on point to the other.
Example: If a control value of 75% is calculated and a cycle time of 10min is adjusted, the
control value will be switched on for 7,5min and switched off for 2,5min.
Basically, the following applies to the cycle time: the more sluggish the overall system, the greater
the cycle time can be set.
Use additional level
Eine ausführliche Beschreibung zu diesem Parameter, siehe
MDT technologies GmbH • 51766 Engelskirchen • Papiermühle 1 • Germany
32
Phone: +49-2263-880 • knx@mdt.de • www.mdt.de
[SCN-RT1xPx.01]
4.5.6 Additional level