Technical Manual
–
Central Operation Unit Smart
MDT technologies GmbH •
51766 Engelskirchen • Papiermühle 1
Phone: +49-2263-
880 • Fax: +49-2263-4588 • [email protected] • www.mdt.de
70
70
The following figure shows the switching behaviour of the outputs depending on the threshold
values:
Figure 27: Switching behaviour - Step controller
Hysteresis
The hysteresis serves to avoid too frequent switching. For example, a hysteresis of 5% and a
threshold of 50% would switch on at 55% and switch off at 45%. If the thresholds are determined via
Delta T, the hysteresis is also given in Kelvin. However, the effect remains the same.
Outputs cyclically send all
With this parameter the cyclical sending of the output can be activated. All output states are sent
cyclically according to the set time.
The following table shows the communication objects for the output of the step switch bit-coded:
Number
Name
Length
Usage
177
Ventilation control - Level 1
1 Bit
Switching the output level 1
178
Ventilation control - Level 2
1 Bit
Switching the output level 2
179
Ventilation control - Level 3
1 Bit
Switching the output level 3
180
Ventilation control - Level 4
1 Bit
Switching the output level 4
Table 65: Communication objects - Step switch bit coded
