AS-i bus termination: Increased safety and longer cable
 
 

 
 Improved data transfer due todefined bus termination
  • Devices with protection rating IP 67, for direct installation in the field at the end of the AS-i cable.
  • AS-i termination: Passive bus termination to extend the cable length to max. 200 m.
  • Use in conjunction with repeaters possible, overall length up to 600 m.
  • Works with every topology: star, ring, line and open tree structure.
  • Fast, easy mounting using FC insulation displacement connector.

The communication of an AS-i network can be considerably improved by the connection of a suitable terminating resistor. It is composed of an inductance, resistor and capacitor.

Thus reflections on the cable are minimised, safety and the signal-to-noise ratio are increased.

Another advantage is that an AS-i network with more than 100 metres of cable length is made possible. As flexible tree, ring, star and line topologies are possible with AS-i, there are no clear rules as regards the possible cable length. Empirical measurements with different arrangements have shown, however, that up to 200 m are possible in many networks.

The bus termination is an entirely passive interface, easily mounted at the end of the cable furthest away from the AS-i power supply.

Typical applications
  • Use at the end of the cable if more than 100 metres of AS-i cable are to be used
  • Increasing the signal-to-noise ratio and the message quality
  • For increased safety with respect to interference in Safety at Work applications
  • If incorrect messages occur frequently and the cause cannot be identified
  • Extension of the AS-i cable with repeaters to up to 600 metres between two slaves

AC1147 - Passive AS-i bus termination (AS-i termination plug)

Accessories

E70096 - Socket M12 - AS-i flat cable - FC insulation displacement connector
AC1145 - eASI-Tester - Local diagnosis of the AS-i network
AC2225 - AS-i repeater - Extension of the AS-i network by another 100 m
AC1216 - AS-i power supply 115/230 V AC