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Connecting the sensor via RS485 to the controller DEGA UPA III/UDA III

Installation of wiring for RS485

Wiring must be done using bus topology and according to the RS485 principles.

Maximum number of connected transmitters per controler channel is 16 (may be less depending on the

configuration of the controller), while the total length of the connecting cable (electrical distance between the

controller and the last transmitter) should not exceed 1200 meters. Due to voltage disposals caused by each

transmitter, the maximum addition of distances must be L1+L2+L3+…+L16:

Cable type

NSx-CL III NSx-IL III

NSx-SL III NSx-EL III

Shielded 4x0,8mm 2,1 km

2,9 km

4,2 km

Shielded 4x1mm

3,3 km

4,4 km

6,5 km

Shielded 4x1,5mm 6,2 km

7,3 km

11,6 km

Shielded 4x2,5mm 10,1 km

13,5 km 13,5 km 20,1 km

Selecting the appropriate type of cable depends on the fire report and the protocol for determining external influences.

Setting the RS485 adress of the transmitter

Each transmitter must have a unique adress within the entire bus, otherwise there will be

communication collisions and malfunctions.

The transmitter adress can either be set internally using the DegaConfig program or using the DIP

switch on the PCB.

If the position 6 (labeled ADD) is in the ON position, then the adress according to the setting of pins 1-5

is considered. Otherwise the adress set in DegaConfig is considered.

The adress can be set from range 1-31 using binary values. A table with DIP settings for individual

adresses is listed in the attachment "Chart for setting the transmitter adress"

Terminating resistor

According to the RS485 specifications, the last device on the bus must be ending with a terminating

resistor 120R. Plug a jumper on the JP2 connector of the last device on the bus to include the 120R

terminating resistor. In the default configuaration the jumper connector is not plugged.

Содержание NS III LCD

Страница 1: ...any form without the prior permission of DEGA CZ s r o is prohibited DEGA CZ s r o reserves the right to alter the specifications of the hardware and software described in this manual at any time and without prior notice DEGA CZ s r o bears no liable for any damage resulting from use of this device ...

Страница 2: ...tter 8 2 Gas detection 8 3 Malfunction 8 4 Monitoring the calibration periods 8 5 Reading the record of measured concentrations and alarms 8 Operation maintenance inspection and service of the transmitter 8 1 Usage limits 8 2 Operation 9 3 Operation Maintenance 9 Accessories and basic types of transmitters 9 1 Calibration adapter connection to the gas pump DEGA GAS INLET 9 2 Cover against splashin...

Страница 3: ...tter sensors with respect to the environment Transmitter sensors contain hazardous substances Dispose of them in accordance with the current legislation on environmental protection Use the transmitter only with the appropriate certified DEGA products The device is certified as functionally and technically qualified only with original DEGA accessories In case of using the device with any other prod...

Страница 4: ...LCD RE max 30 min DEGA NSx SL III DEGA NSx PL III PID 90 mA 2 2 W 154 mA 3 7 W DEGA NSx SL II LCD RE DEGA NSx PL III PID max 5 h max 30 min Response time T90 Sensor lifetime in a clean environment DEGA NSx EL II LCD RE max 180 s based on sensor type DEGA NSx EL II LCD RE 2 years DEGA NSx CL II LCD RE max 15 s DEGA NSx CL II LCD RE 2 years DEGA NSx IL II LCD RE max 15 s DEGA NSx IL II LCD RE 5 year...

Страница 5: ...atalyst poisons sulfur and silicon compounds which cause a change of sensitivity of catalytic sensors The sensors are characterized by high stability and a long lifetime DEGA NSx SL III with a semiconductor sensor Cheapest method of scanning They operate on the principle of changes in electrical conductivity of semiconductors by changing the concentration of the detected gas Their advatage is a lo...

Страница 6: ...smitter with the four hexagon socket screws 4mm b Disconnect the LCD motherboards c Mount the transmitter on a flat surface with four 6mm fasteners in height above the floor with the gas entrance facing downwards as specified by the detected substance d Direct the cable trough the bushing e Connect the cabeling to the terminal block When using the second Ex d bushing dismout the Ex d blind plug It...

Страница 7: ... of cable depends on the fire report and the protocol for determining external influences 7 Setting the RS485 adress of the transmitter Each transmitter must have a unique adress within the entire bus otherwise there will be communication collisions and malfunctions The transmitter adress can either be set internally using the DegaConfig program or using the DIP switch on the PCB If the position 6...

Страница 8: ...alue to the evaluation unit via DEGA MOBUS protocol 3 Malfunction If a malfunction of electronics or the sensor is detected during operation the transmitters starts transmitting via a 0 5mA current loop On the PCB this state is indicated by the yellow LED ERR 4 Monitoring the calibration periods The transmitter continuously checks the calibration validity of the connected sensor After 12 months si...

Страница 9: ... is set can cause an alarm even if the concentration of the gas does not exceed the set level Given the range of disturbing gases or vapors diluents exhaust gases vapors of organic substances disinfectants etc a generally allowable concentration of interfering gases can not be determined Data on cross sensitivity to certail gases are included at the apporpriate sensors Therefore before processing ...

Страница 10: ...ording to the selectivity of the sensor 2 Transmitters with an electrochemical sensor NSx EL III Product code Transmitter type Detected gas Measurement range Measurement of current loop 4 20mA Resolution Calibration gas 40100022 DEGA NSCO EL 1000 III Carbon Monoxide CO 0 1000 ppm 0 130 ppm 1 ppm Carbon Monoxide 130 ppm 40100019 DEGA NSCO EL 200 III Carbon Monoxide CO 0 200 ppm 0 200 ppm 0 1 ppm Ca...

Страница 11: ...de 20 ppm 40100049 DEGA NSNO2 EL 100 III Nitrogen dioxide NO2 0 100 ppm 0 100 ppm 0 1 ppm Nitrogen dioxide 20 ppm 40100050 DEGA NSNO2 EL 500 III Nitrogen dioxide NO2 0 500 ppm 0 500 ppm 1 ppm Nitrogen dioxide 100 ppm 40100046 DEGA NSNO EL 250 III Nitric oxide NO 0 250 ppm 0 15 ppm 0 1 ppm Nitric oxide 150 ppm 40100045 DEGA NSNO EL 25 III Nitric oxide NO 0 25 ppm 0 25 ppm 0 1 ppm Nitric oxide 15 pp...

Страница 12: ...de 250 ppm 40100033 DEGA NSHBr EL 20 III Hydrogen bromide HBr 0 20 ppm 0 20 ppm 0 01 ppm Hydrogen sulfide 25 ppm 40100034 DEGA NSHBr EL 200 III Hydrogen bromide HBr 0 200 ppm 0 200 ppm 0 1 ppm Hydrogen sulfide 250 ppm 40100038 DEGA NSHF EL 10 III Hydrogen fluoride HF 0 10 ppm 0 10 ppm 0 01 ppm Nitrogen dioxide 20ppm 40100067 DEGA NSVOC EL 20 III VOC 0 20 ppm 0 20 ppm 0 01 ppm VOC 20ppm 40100003 DE...

Страница 13: ...4000 ppm 0 500 ppm 0 1ppm Izobutylene 300ppm LEL Lowest explosion level ALARM PEL Permitted exposure limit maximal permitted value of the avarage concentration over time Alarm settings can be chosen freely according to customer requirements in measurement range Attachments 1 Chart for setting the transmitter adress adress 1 2 3 4 5 1 ON OFF OFF OFF OFF 2 OFF ON OFF OFF OFF 3 ON ON OFF OFF OFF 4 OF...

Страница 14: ...ct shall be replaced 616 paragraph 4 of the Commercial Code 6 The buyer who exercises the right of warranty repair is not entitled to the return of the parts that have been replaced 7 The warranty period can be extended for up to 48 months and its validity can be extended beyond the standard length on the basis of the conclusion of an individual warranty contract Further information may be obtaine...

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