EUD-2016026-00 Rev.2, SmartScanIS User’s Guide for Union Pacific, 14 January 2021
57
The table below describes the function of each terminal.
Function
Num
Num
Function
Ground – Power supply ground.
28
1
+12 VDC input.
Ground – Power supply ground.
29
2
+24 VDC input.
Output1 is the open collector sinking
output of transistor Q3. Designed to
supply a ground to drive a relay.
Active
when a passing train contains one or
more Exception alarms
.
30
3
Normally closed relay contact. Polling
connection.
Output2 is the open collector sinking
output of transistor Q4. Designed to
supply a ground to drive a relay.
Active
when a passing train contains an
Integrity Failure.
31
4
Normally closed relay contact. Polling
connection.
Input1 ground return. Associated with
terminal 5.
32
5
Input1 signal. Contact closure to ground
or to terminal 32 indicates presence of
the AC power.
Input2 ground return. Associated with
terminal 6.
33
6
Input2 signal. Contact closure to ground
or to terminal 33 indicates the AC surge
arrestor is in working condition.
Input3 ground return. Associated with
terminal 7.
34
7
Input3 signal. Ground this input to
rebroadcast the last announcement.
High-load or high-wide ground return.
Associated with terminal 8.
35
8
High-load or high-wide signal. Contact
closure to ground or to terminal 35
indicates no high-load or high wide.
Open contacts signify high-load or
high-wide.
Dragging-equipment ground return.
Associated with terminal 9.
36
9
Dragger signal. Contact closure to
ground or to terminal 36 indicates no
dragging equipment. Open contacts
signify dragging equipment.
Wide-load-1 ground return. Associated
with terminal 10.
37
10
Wide-load-1 signal. Contact closure to
ground or to terminal 37 indicates no
wide-load on the right-side of the track.
Open contacts signify wide-load on the
right-side of the track.
Wide-load-2 ground return. Associated
with terminal 11.
38
11
Wide-load-2 signal. Contact closure to
ground or to terminal 38 indicates no
wide-load on the left-side of the track.
Open contacts signify wide-load on the
left-side of the track.
SOTC ground. Associated with terminal
12.
39
12
SOTC signal. +12 VDC applied here
indicates train is present.
Number 1 zero-speed transducer ground
return. Associated with terminal 13.
40
13
Number 1 zero-speed transducer signal.
Not used
.
Number 2 zero-speed transducer ground
return. Associated with terminal 14.
41
14
Number 2 zero-speed transducer signal.
Not used
.
Number 3 zero-speed transducer ground
return. Associated with terminal 15.
42
15
Number 3 zero-speed transducer signal.
Not used
.
Number 4 zero-speed transducer ground
return. Associated with terminal 16.
43
16
Number 4 zero-speed transducer signal.
Not used
.
Содержание SmartScanIS
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