
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
69
69
Type of thresholds: Control value/Delta T
The ventilation control refers in the setting "Type of thresholds: Control value" to the current control
value of the temperature controller. If the temperature controller is active in heating mode, the
ventilation stages are switched according to object 153 - Control value heating. If the temperature
controller is active in cooling mode, the ventilation stages are switched according to object 155 -
Control value cooling. In the control mode heating and cooling, the control value of the currently
active mode is used.
In the setting "Type of thresholds: Delta T", the delta is formed from the currently measured
temperature value, which is output on object 145 - temperature value, and the setpoint value, which
is sent on object 171 - current setpoint value.
The following parameter settings are available:
ETS-Text
Dynamic range
[Default value]
Comment
Threshold level 1
(Type of threshold: control value)
0%
–
100%
[10%]
Threshold value below which all stages
are switched off, above which stage 1 is
switched on
Threshold level 1
(Type of threshold: Delta T)
1,0K-10,0K
[2,0K]
Delta T below which all stages are
switched off, above which stage 1 is
switched on
Threshold level 2
(Type of threshold: control value)
0%
–
100%
[30%]
Threshold value below which level 1 is
switched on and above which level 2 is
switched on
Threshold level 2
(Type of threshold: Delta T)
1,0K-10,0K
[4,0K]
Delta T below which level 1 is switched
on and above which level 2 is switched
on
Threshold level 3
(Type of threshold: control value)
0%
–
100%
[50%]
Threshold value below which level 2 is
switched on and above which level 3 is
switched on
Threshold level 3
(Type of threshold: Delta T)
1,0K-10,0K
[6,0K]
Delta T below which level 2 is switched
on and above which level 3 is switched
on
Threshold level 4
(Type of threshold: control value)
0%
–
100%
[70%]
Threshold value below which level 3 is
switched on and above which level 4 is
switched on
Threshold level 4
(Type of threshold: Delta T)
1,0K-10,0K
[8,0K]
Delta T below which level 3 is switched
on and above which level 4 is switched
on
Hysteresis
(Type of threshold: control value)
0%-20%
[5%]
Hysteresis for switching the output
stages
Hysteresis
(Type of threshold: Delta T)
0,1K-2,0K
[0,5K]
Hysteresis for switching the output
stages
Outputs cyclically send all
▪
not send
▪
1 min
–
60 min
Parameter activates the cyclic sending
of all 4 output objects
Table 64: Settings
–
Output step controller