STC Smartscan NG2, Руководство пользователя

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May 2021, SmartScanNG² User's Guide for Wayside Enclosure Components, EUD-2018086-00 Rev.3
9.8.1 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 are routed through the surge panel of the leftmost SmartScanNG²
detector. The wires from track2 are routed through the surge panel of the rightmost
SmartScanNG² detector.
On each surge-suppression panel, there is one DRI-24 suppressor assigned to transducer
TO1 and transducer TO2 . These suppressors protect the SmartScanNG² system from
transients and surges, which can be induced onto external wiring by lightning.
T
O
1
+
T
O
1
-
T
O
2
+
T
O
2
-
T
O
1
+
T
O
1
-
T
O
2
+
T
O
2
-
D2
1
1
0
1
-1
2
1
3
D
R
I-
2
4
L
V
1 2 3 4 5 6 7
D
2
-4
B
D
2
-5
B
D
2
-6
B
D
2
-7
B
D
2
-4
T
D
2
-5
T
D
2
-6
T
D
2
-7
T
OUTPUT
INPUT
NOTE: Observe correct polarity when you connect the
wires from the transducers. The polarity is correct
when the transducer's white wire is connected to
and the black wire is connected to signal-.
NOTE: Magnetic transducers should be terminated to
the corresponding MAG (magnetic) input terminal of
the NG² chassis. Likewise, Frauscher transducer
should be terminated to the corresponding ZERO
(zero speed) input terminal of the NG² chassis