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Document 50182 Rev A2 10/28/96 P/N 50182:A2
Section Three: LCD-80TM Electrical Connections
To next LCD-80TM
From EIA-485 Source
(refer to table below)
LCD-80TM
Refer to Appendix A for shield
termination instructions.
IMPORTANT: The LCD-80TM requires the connection of 24 VDC power in addition to the EIA-485 interface to operate.
Table 2-1: EIA-485 Connection
Notes:
1) All connections are power-limited and supervised.
2) A maximum of 32 LCD-80TMs may be connected to this circuit.
3) 6000 feet maximum distance (@ 16 AWG) between the panel and the first or last LCD-80TM and between each additional LCD-
80TM.
4) Use overall foil/braided-shield twisted pair cable suitable for EIA-485 applications (refer to Appendix A for shield termination
information).
5) The EIA-485 circuit is rated at 5.5 VDC maximum and 60 mA maximum.
6) Each LCD-80TM must have R-120 resistors installed across the in and out terminals as shown.
Figure 2-1: LCD-80TM EIA-485 Connection
( - ) EIA-485
(+) EIA-485
(+) (-)
EIA-485
CCM-1
(AM2020/AFP 1010)
AFP-200
DIA
(AM2020/AFP 1010)
OUT (-) Term. 4 P3-4 TB5-2 TB1-4
RET (-) Term. 3 P3-3 TB 5-4 TB 1-3
OUT(+) Term. 2 P 3-2 TB 5-1 TB1-2
RET(+) Term. 1 P 3-1 TB 5-3 TB 1-1
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