STC SmartScanIS, Руководство пользователя

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14 January 2021, SmartScanIS User’s Guide for Union Pacific, EUD-2016026-00 Rev.2
8.7 Dragging-Equipment Detector
Most, but not all, systems use dragging-equipment detectors. If your site doesn't use them,
skip the instructions below and go to
8.8 Track Circuit .
When used, there is one dragging-equipment detector per track, each having two wires.
Usually, one black wire and one white wire. The color of your wires may be different.
At double-track sites, the wires from the dragging-equipment detector on track1 are connected
inside the leftmost SmartScanIS enclosure. The wires from track2 are connected inside the
rightmost SmartScanIS enclosure.
On the Surge Protection Subassembly (in the SmartScanIS enclosure), the UTB labeled
Dragger is for the dragging-equipment detector. This UTB protects the SmartScanIS from
transients and surges, which can be induced onto external wiring by lightning. The UTB has
four rows of connectors. The wires from the dragging-equipment detector are terminated at
the third row of connectors from the top. The second row from the top is wired at the factory to
terminal block
TB1 on the System Interface board.
Correct polarity need not be observed when connecting the wires from the detector. One wire
from the detector should be connected directly below the existing white wire at row two of the
UTB, and the other wire should be connected directly below the existing black wire at row two
of the UTB.
First Wire from Dragging-Equipment Detector Second Wire from Dragging-Equipment Detector
White Wire from System Interface Board Black Wire from System Interface Board
First Wire from Dragging-Equipment Detector Second Wire from Dragging-Equipment Detector
White Wire from System Interface Board Black Wire from System Interface Board