Rockwell Automation 20-COMM-L LonWorks Adapter - Manual (Page 20)

2-4 Installing the Adapter
20-COMM-L LonWorks Adapter User Manual
Publication 20COMM-UM008B-EN-P
Connecting the Adapter to
the Network
1. Remove power from the drive.
2. Use static control precautions.
3. Route the LonWorks cable from the network through the bottom of the
PowerFlex drive (see Figure 2.2 ).
See the LonMark Layers 1-6 Interoperability Guidelines, Appendix A
‘Cable Requirements for the TP/FT-10 Channel’ for cable
recommendations and requirements.
4. Connect a 6-pin linear plug to the network cable.
Figure 2.3 shows a wiring example, and terminal names and their
functions.
Figure 2.3 Example Wiring of Bus Topology with Shield
5. Insert the 6-pin linear plug into the mating adapter terminal block.
!
ATTENTION: Risk of injury or death exists. The PowerFlex
drive can contain high voltages that can cause injury or death.
Remove power from the drive, and then verify power has been
discharged before installing or removing the adapter.
Terminal Name Function
1 SHIELD (1)
(1) We recommend using shielded network cable. This shield must be grounded at one point on the network
using a 470K ohm, 1/4 watt, ≤ 10% metal film resistor.
Noise mitigation (2)
(2) For noise mitigation, do not run LON trunk lines in close proximity to drive or equipment power distribution
feeds.
2 NET A Network connection, polarity insensitive
3 NET B Network connection, polarity insensitive
4 TERM BUS Connect to TERM COM for termination of Bus (3) topology networks
(3) To terminate a Bus topology network (one termination at each end of the network), connect TERM COM to
TERM BUS.
5 TERM COM Termination common
6 TERM FT Connect to TERM COM for termination of Free (4) topology networks
(4) To terminate a Free topology network (one termination per segment), connect TERM COM to TERM FT.
Node 1 Node 2 Node "n"
TERM COM NET A NET B TERM B
US
SHIELD TERM FT TERM COM NET A NET B TERM B
US
SHIELD TERM FT TERM COM NET A NET B TERM B
US
SHIELD TERM FT