L90 Channel Communication; Description - GE UR Series Instruction Manual

3.3 L90 CHANNEL COMMUNICATION

3.3 L90 CHANNEL COMMUNICATION
The L90 relay requires a special communications module which is plugged into slot "W" for UR-Horizontal or slot "R" for
UR-Vertical. This module is available in several varieties. Relay to relay channel communication is not the same as the
10Base-F interface (available as an option with the CPU module). Channel communication is used for sharing data among
relays.
Table 3–5: CHANNEL COMMUNICATION OPTIONS
MODULE SPECIFICATION
TYPE
7A 820 nm, multi-mode, LED, 1 Channel
7B 1300 nm, multi-mode, LED, 1 Channel
7C 1300 nm, single-mode, ELED, 1 Channel
3
7D 1300 nm, single-mode, LASER, 1 Channel
7E Channel 1: G.703; Channel 2: 820 nm, multi-mode, LED
7F Channel 1: G.703; Channel 2: 1300 nm, multi-mode, LED
7G Channel 1: G.703; Channel 2: 1300 nm, single-mode, ELED
7Q Channel 1: G.703; Channel 2: 1300 nm, single-mode, LASER
7H 820 nm, multi-mode, LED, 2 Channels
7I 1300 nm, multi-mode, LED, 2 Channels
7J 1300 nm, single-mode, ELED, 2 Channels
7K 1300 nm, single-mode, LASER, 2 Channels
7L Ch 1 - RS422, Ch 2 - 820 nm, multi-mode, LED
7M Ch 1 - RS422, Ch 2 - 1300 nm, multi-mode, LED
7N Ch 1 - RS422, Ch 2 - 1300 nm, single-mode, ELED
7P Ch 1 - RS422, Ch 2 - 1300 nm, single-mode, LASER
7R G.703, 1 Channel
7S G.703, 2 Channels
7T RS422, 1 Channel
7W RS422, 2 Channels
72 1550 nm, single-mode, LASER, 1 Channel
73 1550 nm, single-mode, LASER, 2 Channel
74 Channel 1 - RS422; Channel 2 - 1550 nm, single-mode, LASER
75 Channel 1 - G.703; Channel 2 - 1550 nm, single-mode, LASER
The above table shows the various Channel Communication interfaces available for the L90 relay. All of the fiber modules
use ST type connectors. For 2-Terminal applications, each L90 relay requires at least one communications channel.
The L90 Current Differential Function must be "Enabled" for the Communications Module to work. Refer to
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SETTINGS
NOTE
OBSERVING ANY FIBER TRANSMITTER OUTPUT MAY CAUSE INJURY TO THE EYE.
CAUTION
3-20
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CONTROL ELEMENTS LINE DIFFERENTIAL
L90 Line Differential Relay
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menu.
CURRENT DIFFERENTIAL
3 HARDWARE

3.3.1 DESCRIPTION

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