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Problems?  Try checking through the following problems and answers first!  If your problem still isn't solved contact us: 


(712) 262-1521
 

 

Cabinet Problems and Signals
  1. Conflict monitor indication

  2. Traffic signal lamps

1. Conflict monitor indication: What does it mean?  Where is the problem?

Conflict [CONF] Two or more indications on at the same time that could cause an accident.

  • Frequently this problem will be discovered outside of the cabinet.  First, check your field wiring for loose wire nuts or damaged/shorted wires.  Burned out signal lamps can also be the culprit.
  • Inside the cabinet, check the controller and monitor programming, load switches, flash transfer relays, or cabinet wiring.  Replace any suspect items with known-good spares or stock items.

Red Failure [FAIL] No output on one or more channels.

  • This almost always represents a problem inside the cabinet.
  • Check the boards in the controller.  Also check the monitor, load switches, flash transfer relays, or cabinet wiring (loose connections can develop over the years).

2. Traffic Signal Lamps

  • What size lamp should be used?
  1. Visibility is the most important thing to consider.  That is, can the right people see the correct signal at the proper time?  Regularly cleaning the lenses and reflectors will increase visibility.
  2. Light Center Length is important!  LCL is the distance from the bottom of the base to the filament.  Using the wrong LCL reduces light output by 50%!  A good case can be made for choosing the 135 W bulb for your 12" vehicle indications and the 67 W bulb for your pedestrian indications and 8" vehicle indications.  (The exception does exist when using HVLS signals.  They require a 116 W, 2 7/16" LCL.)
  3. Below is a list of lamp choices in the traffic industry.  This list indicates the relationship of wattage and lumens (light output) and the LCL available for each.
  • 165 Watt equals 1950 Lumens - 3" LCL
  • 150 Watt equals 1750 Lumens - 3" LCL
  • 135 Watt equals 1750 Lumens - 3" LCL
  • 116 Watt equals 1260 Lumens - 3" LCL or 2-7/16" LCL
  • 100 Watt equals 1080 Lumens - 3" LCL or 2-7/16" LCL
  •   90 Watt equals 1040 Lumens - 3" LCL or 2-7/16" LCL
  •   69 Watt equals   630 Lumens - 2-7/16" LCL
  •   67 Watt equals   610 Lumens - 2-7/16" LCL
  •   60 Watt equals   550 Lumens - 2-7/16" LCL

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