STC SmartScanIS, Руководство пользователя

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EUD-2016026-00 Rev.2, SmartScanIS User’s Guide for Union Pacific, 14 January 2021
139
8.8 Track Circuit
Not all systems use a track circuit. When present, there is one track circuit per track. If your
site doesn't use a track circuit, skip the instructions below and go to
8.9 Telephone .
To connect the track circuit to the SmartScanIS enclosure:
1 Be sure that the track circuit is installed on the track.
2 Be sure that you have on hand a wire stripper, a pliers-type crimping tool, and a
midsize slotted screwdriver.
3 Mount a terminal block below the SmartScanIS enclosure.
At a single-track site, the cable from the track circuit should be labeled TC . At a
double-track site, they're labeled TC-TRACK1 or TC-TRACK2 , whichever is
appropriate.
At a double-track site, the cable from track1 is connected to the leftmost SmartScanIS
enclosure.
4 Cut the track-circuit cable to the proper length.
5 Using a wire stripper, remove 1/4 inches (6.4 millimeters) of insulation from the ends of
both wires coming from the track circuit.
6 Using a pliers-type crimping tool, crimp one ring terminal to the end of each of these
two wires.
7 Fasten one ring terminal to the left side of the terminal block.
8 Fasten the other ring terminal to the right side of the terminal block.
On the Surge Protection Subassembly (in the SmartScanIS enclosure) are two terminal
blocks (labeled
SOTC ). One is red and the other is black.
Surge Arrester
for Track Circuit
Terminal Blocks for
Incoming Track Circuit
Surge Arrester
for Track Circuit
Terminal Blocks for
Incoming Track Circuit