Danfoss ECL Comfort 296 Service Manual Download | Manualshive

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© Danfoss | 2017.06 | 15

VI.LV.H1.02

Service guide

ECL 296 / ECL 310 Modbus

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Summary of Contents for ECL Comfort 296

Page 1: ...erial 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...

Page 2: ...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 reco...

Page 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 d...

Page 4: ...r 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 quali...

Page 5: ...CLs 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 Se...

Page 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 centra...

Page 7: ...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 sec...

Page 8: ...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 refere...

Page 9: ...reated 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 continuit...

Page 10: ...ing 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...

Page 11: ...2 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 firs...

Page 12: ...ignals 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...

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

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

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

Page 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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