Danfoss ECL Comfort 310 Operating Manual page 30

Operating Guide
2.5.6 Electrical connections, master / slave systems
The controller can be used as master or slave in master / slave
systems via the internal ECL 485 communication bus (2 x twisted
pair cable).
The ECL 485 communication bus is not compatible with the ECL
bus in ECL Comfort 110, 200, 300 and 301!
Terminal Description
30 Common terminal
31* +12 V*, ECL 485 communication bus
32 B, ECL 485 communication bus
33
A, ECL 485 communication bus
* Only for ECA 30 / 31 and master / slave communication
2.5.7 Electrical connections, communication
Electrical connections, Modbus
ECL Comfort 210: Non-galvanic isolated Modbus connections
ECL Comfort 296: Non-galvanic isolated Modbus connections
ECL Comfort 310: Galvanic isolated Modbus connections
2.5.8 Electrical connections, communication
Electrical connections, M-bus
ECL Comfort 210: Not implemented
ECL Comfort 296: On board
ECL Comfort 310: On board
30 DEN-SMT/DK
ECL Comfort 310, application A368
Type
(recomm.)
Cable 2 x
twisted pair
Total cable length: Max. 200 m (all sensors incl. internal ECL 485
communication bus).
Cable lengths of more than 200 m may cause noise sensibility (EMC).
Total cable length: Max. 200 m (all sensors incl. internal ECL 485
communication bus).
Cable lengths of more than 200 m may cause noise sensibility (EMC).
VI.LG.J3.02
Danfoss District Energy