STC Smartscan NG2, Руководство пользователя

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EUD-2018086-00 Rev.3, SmartScanNG² User's Guide for Wayside Enclosure Components, 14 May 2021
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9.9.1 Gating Transducers
There are two gating transducers per track, each having two wires. At a single-track site, the
wires from gating transducer TO1 should be labeled
TO1 . The wires from gating transducer
TO2 should be labeled TO2 .
At a double-track site, they should be labeled TO1-TRACK1 , TO2-TRACK1 , TO1-TRACK2 , or
TO2-TRACK2 , whichever is appropriate. At double-track sites, the wires from the gating
transducers on track1 connect inside the leftmost SmartScanNG² enclosure. The wires from
track2 connect inside the rightmost SmartScanNG² enclosure.
On each surge-suppression panel, there is one UTB (universal transient barrier) assigned to
transducer
TO1 and another to transducer TO2 . These UTBs protect the SmartScanNG²
system from transients and surges, which can be induced onto external wiring by lightning.
Each UTB has two rows of connectors. The wires from each gating transducer terminate to
the bottom row of its respective UTB. The top row of connectors is prewired at the factory to
TS3 on the System-Interconnect board.
Observe the correct polarity when you connect the wires from the transducers. The polarity
is correct when the transducer's white wire is connected directly under the existing white wire
at the top of the UTB, and the transducer's black wire is connected directly under the existing
black wire at the top of the UTB. Connect
TO1 first and TO2 second. TO2 is the northmost or
eastmost gating transducer.
White Wire from Gating Transducer Black Wire from Gating Transducer
White Wire from System-Interconnect Board Black Wire from System-Interconnect Board
White Wire from Gating Transducer Black Wire from Gating Transducer
White Wire from System-Interconnect Board Black Wire from System-Interconnect Board
Shield from Cable
If no GND connection on UTB,
connect shield to Chassis GND.