Danfoss ECL Comfort 310 Скачать руководство пользователя страница 15 | Manualshive

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© Danfoss | 2017.06 | 15

VI.LV.H1.02

Service guide

ECL 296 / ECL 310 Modbus

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Содержание ECL Comfort 310

Страница 1: ...serial bus infrastructure 3 5 0 ECL 296 310 Modbus network specification 4 6 0 Installation class and surge lightning protection 5 7 0 Annexure A Modbus network wiring guidelines 6 7 1 Central heating station 7 7 2 Repeater stations individual houses with repeater 8 7 3 Individual houses without repeater 9 8 0 Annexure B 10 8 1 Selection of parts 10 8 2 Surge protector wiring 11 8 3 Modbus to main...

Страница 2: ...w installations The document is prepared in compliance with www modbus org 3 0 Conclusion 1 Each nodes in the Modbus network central heating station repeater station or individual house are highly recommended to have surge protector It must be selected as per section 6 and installed as described in section 7 2 Phoenix PT 1X2 F BE or similar products from another manu facturer as per the surge prot...

Страница 3: ... interface with the trunk is named ITr Trunk Interface 2 The interface between the device ECL 296 310 and the Passive Tap surge protector is named IDv Derivation Interface 3 The interface between the device ECL 296 310 and the Active Tap repeater is named AUI Attachment Unit Interface 4 LT line termination Resistor 120 ohm 0 5 W or 150 ohm 0 5 W A multipoint Modbus serial line bus is made of a pri...

Страница 4: ...er the figure below 3 Maximum derivation cable length per node per ECL 1 25 meters calculated based on 40 m max derivation cable length for 32 nodes 4 Line termination to ensure the communication quality At each extremity of the trunk cable 150 ohms or 120 ohms 0 5 watts resistor at both ends Note Repeaters are having internal termination resistors which can be switched on switched OFF by the user...

Страница 5: ...Ls Parameter Surge protection requirement PT 3 PB ST and PT 1X2 F BE Class 4 surge voltage network 1 2uS 50uS 4KV 10KV 8uS 20uSec Short circuit current 42 ohm impedance Much higher than 95 2A 10KA Seems to be 2 ohm impedance tester Maximum continious voltage core to core A B and ref GND in ECL 3 5V and 7V 5 2Vdc Output voltage limitation at 1 kV μs core core spike Output voltage limitation at 1 kV...

Страница 6: ... Modbus to Ethernet converter Repeater stations individual houses with repeater Surge protector RS485 repeater Individual houses without repeater Surge protector Each nodes in the Modbus network central heating station repeater station or individual house can have surge protector Top level logical drawing 1 central heating station 2 individual house W O repeater 3 repeater station 1 surge protecto...

Страница 7: ...n the central heating station architecture more than one network like left wing right wing is possible Single point earthing on common reference signal S Gnd and shield cable to be maintained Refer section 5 point 5 6 Dot on the intersection lines S Gnd Earth means that those two signals are electrically shorted Surge suppressor connection should match as in section 8 2 ...

Страница 8: ...o earth Input cable coming from central heating station shield MUST be floating and output cable shield is connected to earth This is to maintain single point earthing in each network on com mon reference signal S Gnd and shield cable Refer section 5 point 5 6 Dot on the intersection lines S Gnd Earth means that those two signals are electrically shorted b Internal termination of repeaters can be ...

Страница 9: ...created S Gnd is not connected to earth PE Input cable coming from central heating station shield MUST be floating and output cable shield is connected to earth Or the input and output shield continuity is maintained and it is not connected to earth As shown above This is to maintain single point earthing in each network on common reference signal S Gnd and shield cable Refer section 5 point 5 6 ...

Страница 10: ...ping and hence low quality loss of communication network section 5 point 5 These parts look alike in part numbering system and in component outlook So care must be taken to select the right parts Refer the below for example Possibilities for grounding the base element PT 1x2 BE signal ground pin 9 10 is shorted to PE protective earth 3 4 PT 1x2 F BE spark gap between signal ground pin 9 10 to PE p...

Страница 11: ...12 and 10 are capable of handling low surge current but very fast responding These two sets of com ponents gas discharge tubes and transils are separated by a resistor which forces the surge to be first suppressed by the gas discharge tube and the residue will be suppressed by the transil in the proper installation field cables to gas discharge connection points and electronics to be protected are...

Страница 12: ...signals RS485 signals which are meant for indoor wiring must be separated from mains switched mains signal even for a short run Modbus signals may be taken along with MBus sensor signal and other RS485 signals Recommended 1 surge protector 1 Even for a short distance well separated 7mm from mains signal 2 Mains signal must be grouped separately and clear distance is maintained throughout the cable...

Страница 13: ... Danfoss 2017 06 13 VI LV H1 02 Service guide ECL 296 ECL 310 Modbus ...

Страница 14: ...14 Danfoss 2017 06 VI LV H1 02 Service guide ECL 296 ECL 310 Modbus ...

Страница 15: ... Danfoss 2017 06 15 VI LV H1 02 Service guide ECL 296 ECL 310 Modbus ...

Страница 16: ...VI LV H1 02 16 Danfoss DHS SMT DK 2017 06 Service guide ECL 296 ECL 310 Modbus 087H9289 VILVH102 ...

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