MDT SCN-CO2MGS01.02 handleiding
Handleiding
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Technical Manual
CO2 / VOC Combi Sensor 55 [SCN-CO2MGS.02]
MDT technologies GmbH • 51766 Engelskirchen • Papiermühle 1 • Germany
Phone: +49-2263-880 • knx@mdt.de • www.mdt.de
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Sensor
internal/external
▪ 100% internal
▪ 90 % internal/ 10 % external
▪ 80 % internal/ 20 % external
▪ …
▪ 10 % internal/ 90 % external
▪ 100 % external
▪ maximum value
Setting the weighting between
internal and external sensor.
Table 9: Settings – VOC measurement
With the selection "Measured value output in" you can determine whether the VOC measured
value is output in ppm or as IAQ index.
The IAQ Index (Indoor Air Quality Index) describes the indoor air quality. The classification is
described with the parameter "IAQ Index Description" in the corresponding screen.
The setting "Send measured value on change" can be used to set the change on which the sensor
sends its current temperature value. If set to "not active", the sensor does not send a value,
regardless of the size of the change.
The setting "Send measured value cyclically" can be used to set the intervals at which the sensor
sends its current measured value. The cyclical sending function can be activated or deactivated
independently of the setting "Send measured value on change". Measured values are also sent if
the sensor has not detected a change. If both parameters are deactivated, a value is never sent.
Important: After reset/programming, the first measured value is sent after approx. 1 minute.
With the "Messages" function, two message values (upper and lower message value) can be
parameterized. The two functions each have their own communication object.
Principle:
If the upper message value is exceeded, a "1" is sent. If it is undershot again, a "0" is sent.
If the value falls below the lower message value, a "1" is sent. If it is exceeded again, a "0" is sent.
An external sensor can be activated or deactivated via the weighting "Sensor internal/external". If
the weighting is set to 100% internal, no external sensor is activated and no communication object
appears for the external sensor. With any other setting, an external sensor is activated and the
associated object appears. The "mixed" value is sent to the bus via the "Send measured value"
object. With the "maximum value" setting, the higher of the two measured values (internal/external)
is always output.
Important: The external sensor is monitored with a time of 30 minutes. If no new value is received
within this time, only the internal sensor is used!
At the same time, an alarm with a "1" is sent to the "External sensor error" object. If an external
value is received again, the alarm is reset with a "0".
The following table shows the available communication objects:
Number
Name/Object function
Length
Usage
8
VOC measurement – Send
measured value
2 Byte
Sending the current VOC measured value
9
VOC measurement – External
sensor input
2 Byte
Receives the temperature of the external
sensor
10
VOC measurement – Maximum
value exceeded
1 Bit
Sends a message if the upper message value
is exceeded
11
VOC measurement – Minimum
value fallen below
1 Bit
Sends a message when the value falls below
the lower message value
12
VOC measurement – Error
external sensor
1 Bit
Sends an error message if the sensor does
not send a value for a certain time
Table 10: Communication objects – VOC measurement
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Productinformatie
| Merk | MDT |
| Model | SCN-CO2MGS01.02 |
| Categorie | Niet gecategoriseerd |
| Taal | Nederlands |
| Grootte | 14681 MB |
