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14 January 2021, SmartScanIS User’s Guide for Union Pacific, EUD-2016026-00 Rev.2
A.4 Basetime Error Reader 2 Alarm
There isn't a Basetime Error Reader 2 alarm when a 2200-750 Reader is attached to the
system. This alarm only appeared under an earlier version of the system, one that used a
2200-504TB Reader.
A.5 Blind Pyro Alarm
The Blind Pyro alarm indicates that an object may have blocked a scanner for at least 30 axles
during train passage. If 30 or more consecutive axles have a bearing temperature of less than
3°F (1.6°C) on one side and greater than 19°F (10°C) on the opposite side, the scanner on the
3°F side is declared as having a "blind" pyrometer.
There is a different Blind Pyro alarm for each rail. That is, there is a Blind North Pyro alarm
and a Blind South Pyro alarm (or, depending on track direction, a Blind East Pyro alarm and a
Blind West Pyro alarm).
A.6 Cold Rail Alarm
The Cold Rail alarm indicates that the temperatures of all bearings (of the train) on the
designated rail were at or below a given temperature. When no bearing on a given rail
generates a delta temperature reading greater than the temperature set by the
Cold Journal
option
on the Alarm Limits submenu, the system generates a Cold Rail alarm for the given
rail.
Chapter 11 - Serial Interface
tells how to view or change the
Cold Journal option
.
Milepost-0081.2, Track:Single
Alarm Limits
---------------------------------------------------
A) Absolute................... 180°
B) Differential...............
90°
C) Hot Wheel.................. 540°
D) Cold Wheel.................
30°
E) CS Slope................... 0.32
F) CS Minimum.................
37°
G) Cold Journal...............
10°
H) Cold Wheel Scanner.........
30°
I) Cold Trains.................
3
J) Sliding Wheel Ratio......... 50%
K) Max Alarms..................
6
Alarm to change or Esc to quit?
There is a different Cold Rail alarm for each rail. That is, there is a Cold North Rail alarm and
a Cold South Rail alarm (or, depending on track direction, a Cold East Rail alarm and a Cold
West Rail alarm).
Содержание SmartScanIS
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