www.hysecurity.com Vehicle Detector Installation and Loop Layouts MX3630-01 Rev. J 91
Even if the loop problem self heals, historical data about detector/loop performance and a log of Alerts, Faults
and Errors can be retrieved from the Smart DC Controller by downloading from the RS232 communications port
or the USB port. HySecurity’s free START software, a laptop computer, and a special download cable or USB cable
are required to retrieve and read this data.
Loop Health:
The Hy5B monitors loop health which is comprised of loop noise, loop step changes and loop reference changes.
Loop health readings accumulate throughout a 24 hour period and the accrued readings are posted to the Event
Log each day at midnight. After midnight, the loop health baseline resets to its highest value of 777.
Example of an Event Log posting:
Loop Presence:
Loop presence is dependent on “disturbance effect” of the entire vehicle. Presence determines how long to hold
the “memory” of a stationary vehicle on a loop before it is forgotten and ignored. Set the presence of the loop:
• LONG (default) lasts about 20 hours dependent on call strength and sensitivity setting. The Hy5B
tunes out the “disturbance effect” when a vehicle is stationary on a portion of the loop, but keeps the
undisturbed (unaffected) portion of the loop operational.
• INFINITE never drops the call. The INFINITE setting requires a certain amount of signal strength. A
“threshold” is maintained and it will hold the call forever. The loop connected to an Hy5B with this setting
may become nonfunctioning.
Setting Loop Presence
Sub-menu Item Display Example Site Scenario
(LONG)
PR 1
NOTICE: Hy5B has ability to continue counting vehicles passing over loop even though a stationary vehicle may be
on a portion of loop. Controller and Hy5B detector also exchange pertinent information, so if a power failure were to
occur, controller can determine if a vehicle is on loop when power returns.
Frequency:
Knowing the exact frequency of a loop can be useful as a diagnostic tool, and verifying the stability of the loop
frequency is valuable information. To view the actual loop frequency of a specic vehicle detector, go to the
setting for that detector in the Installer Menu, switch the selection from 0 to 1, and press the Select button. The
display will show the loop frequency. The frequency is usually between 20,000 to 80,000 Hertz.
To Next Page
Loading...
Need help?
General
