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RTVS8 115—230 VAC TRANSFORMATOR FLÄKTHASTIGHETSREGULATOR
MED MODBUS RTU KOMMUNIKATION
Enheten har fabriksförinställda parametrar skrivna i den Modbus Register Map. Den
kan fungera utan några andra inställningar. Det finns dock några speciella register
som du kan behöva ställa in beroende på din kombination av produkter. Dessa visas
i tabell 3 nedan.
Table 3 Specialla register
Modbus holding registers Description Values Remark
11 Control Set
Automatic control – takes
value from sensor. Manual
Control – takes value from
register 12
0=Manual mode;
1=Auto Forward mode;
2=Auto Reverse mode
It is possible to change the control of the article only when the switching
of the current command has nished.
13 Output Update Interval Time delay to update the
output in automatic mode 5 s—600 s
If the value of the sensor connected is changing too fast this is the
register that provides control of the time between two consecutive
switching.
16 Hysteresis delta
The dierence between
the upwards switching and
downwards switching step
percentage
2—10 %
This value is subtracted from the threshold when the article is switching
from high to low input value. Hysteresis value is 2 – 10%, it means for
threshold 20%, the “threshold – hysteresis” = 18 % for Δ = 2 %.
17 Communication Lost
Output State
Set output when Modbus
communication is lost
OFF;
Last step selected
Set to 0 = OFF, when there is Modbus Timeout set, when the device
encounters Timeout - RTVS8 enters STOP mode, output is
0. If the remote sensor is lost – device enters state 0 = OFF. Both
communications lost, article goes to OFF.
When set to 1 = Last step selected, on Modbus Timeout occurrence and
sensor is connected – article continues to operate in regarding of the
input from the sensor, if sensor is lost – the article stays on the last
step selected. If both communications are lost, device stays on the last
step selected.
In Auto modes, if there is no communication to the control/monitoring
station, the article continues to operate autonomously while the sensor
is connected.
18 Sensor output register
value number
Select which sensor output
will be used as input to the
device
Digital potentiometer;
Temperature;
Relative Humidity;
CO2/CO2eq;
CO/TVOC;
NO2
Sensor output register value number, dene which sensor value will be
taken for control of the device switching. The restrictions that apply
are for Sentera Sensors only, and the SPV device. When SPV device is
connected this value becomes automatically 1 and cannot be changed
until other sensor is connected.
21—25 Input value step 1—5 Input value to switch to
output steps 1—5
Switches to output step
X at X % input value
and steps down to
output previous step at
X % - Hysteresis delta
(HR16) set
Input Value Step X – the steps will be activated over these thresholds.
If register value is 0 – this step will be skipped as a holding step, but
it will be used as intermediate step if needed to switch to upper/lower
step. Minimum dierence between steps thresholds is 11%, that way
any overlapping of the switching and the hysteresis is avoided.
VERIFIERING AV INSTALLATION
Använd endast verktyg och utrustning med icke-ledande handtag vid arbete på
elektriska apparater.
VARNING
Säker drift beror på korrekt installation. Innan du startar bör du se till följande:
■Strömförsörjningen är korrekt ansluten.
■Skydd ges mot elektriska stötar.
■Kablarna är av lämplig storlek och säkringsskyddade.
■Det finns tillräckligt med luftflöde runt enheten.
VARNING Enheten matas med elektrisk energi vid spänningar som är tillräckligt höga för att
orsaka personskador eller hot mot hälsan. Vidta relevanta säkerhetsåtgärder!
VARNING Koppla från och bekräfta att enheten inte är strömsatt före service.
VARNING Undvik att utsätta styrenheten för direkt solljus!