×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!
  • Students Click Here

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

Jobs

Placing intersection on flash

Placing intersection on flash

Placing intersection on flash

(OP)

We have some intersections that have been placed on flash with the "flash" switch located inside the cabinet.  This apparently de-energizizes the controller so it cannot be communicated with.  I was wondering if this can be done through the controller programming instead?  We have the Econolite ASC controllers.

RE: Placing intersection on flash

It's been a while, but yes, you can program an intersection to go into flash for a period of time, and then into it's regular operating mode afterwards.  We had some intersections that went into flash for the evening and night periods then operated normally during peak and daytime hours.  We eventually eliminated the flashing intersections for loop detectors and "green" resting on the busier roadway.

KRS Services
www.krs-services.com

RE: Placing intersection on flash

It is my understanding that the industry suppliers build the cabinets so that putting the controller in local flash by the doorswitch also shuts down the controller. The purpose of shutting the controller power off is to ensure it goes through the proper initialization routines once the switch is returned to the auto position. The unfortunate side effect is you cannot communicate with a controller that has no power.

RE: Placing intersection on flash

Activating the panel flash places the intersection in flash mode and it also bypasses the controller.  This is the failsafe when a loadswitch blows or conflict monitor senses a conflict (ground short, etc.) or allows a person to re-program the controller.  The controller can be programed to go into flash at specified times as well and I think this was the purpose of the thread.  But like I noted earlier, I'm not a fan of "flashing" intersections due to some legal implications and reduced efficiency of the intersection.

KRS Services
www.krs-services.com

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members!


Resources