Lenel LNL-3300-M5, Руководство по установке

Страница: 45 / 184

M Series Installation Guide
revision 7 —
45
9 Wiring
9.1 Communication Wiring
The LNL-3300-M5 communicates to the host via: on-board Ethernet 10-BaseT/100Base-TX port and/or the
optional Lantronix Ethernet 10-BaseT/100Base-TX Micro125 interface.
TB2 is a 2-wire RS-485 interface that communicates to downstream controllers via the LNL-8000-MCOM
(installed in downstream M5 enclosures). This interface allows multi-drop communication on a single bus of
up to 4,000 feet (1,200 m). Use shielded twisted pair (minimum 24 AWG) cable with 120 ohm impedance.
Notes: Install termination jumper, J4, only on the units at each end of the RS-485 communication line.
Install the termination jumper ONLY on the panel at each end of the RS-485 line. Failure to do
so will compromise the communication channel.
Communication Wiring
Communication Wiring Callouts
Callout Description
1 Shield
2 Drain wire
3 TB2 terminal block on LNL-3300-M5
1
2 3
TB2
GND
TR-
TR+
1
3