User`s guide

Page 13

Controlinc 1746-C (Version 5.21) Network Master Users Guide (2004-11-18)

3.1. Field Connections at the Actuator

Communication connections and wiring are important for the network and the master.

(

The following information was primarily derived from the Controlinc Quick Startup Guide)

3.1.1. Step 1. Plan the Network Topology

Before connecting actuators, the entire network layout should be planned. Topologies may be bus,

redundant bus, E>Net, redundant E>Net, E>Net ring, and redundant E>Net rings. Planning should

include node addressing, wire routing, terminations, and grounding.

3.1.2. Step 2. Select Network Cable

Ensure correct cable is being used.

• Networks require twisted pair and shielded cable with characteristic impedance between 50 and

120 Ohms.

• Capacitance between conductors must be less that 30 pF/Ft (98 pF/M); 10-15pF/Ft is ideal.

• Shielding maybe aluminum foil with drain wire.

• If cable has multiple pairs, then individual pair shielding is required.

• Only cables with stranded conductors are recommended.

• Insulating and outer jacket materials must be selected for the application environment.

The following are acceptable Belden or equivalent cables for most network applications.

AWG 20 18 16 14

Beldon # 8762 8760 8719 8720

Rating 12.8 Pf/fT 12.8 Pf/fT 12.8 Pf/fT 12.8 Pf/fT