Installation and Maintenance Manual
39
Detector & Loop Fault Diagnostics
If Hy-Security HY-5A mini detector modules are used, the Smart Touch Controller has ability to store and
report detector and loop fault information for performance diagnostics. If The Smart Touch Controller
senses a loop or detector problem, the LCD display will flash the abbreviation for the affected detector
(ELd – ioLd – ooLd – rLd) then it will flash the appropriate Alert Code [ALE_] to disclose the nature of the
problem and the buzzer will chirp.
Loop abnormal freq change alert ALE7 2 chirps/sec every 15 seconds
Loop shorted to ground alert ALE8 2 chirps/sec every 15 seconds
Loop disconnected alert ALE9 2 chirps/sec every 15 seconds
Loop detector active >5 minutes AL12 2 chirps/sec every 15 seconds
Loop detector comm. alert AL10 2 chirps/sec every 15 seconds
Loop detector function alert AL11 2 chirps/sec every 15 seconds
Loop detector failed Err3 3 chirps/sec once per minute
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 Touch Controller by downloading from the RS232
communications port. This requires optional Hy-Security software and cables, and a PC computer or a
PDA using the Palm OS, in order to read this data.
Frequency:
Knowing the exact frequency of a loop can be useful as a diagnostic tool and verifying that the loop
frequency is stable is also very valuable information. To view the actual loop frequency of a specific
vehicle detector, go to the setting for that detector, then change the selection to a flashing 1 and then
press the Select button. The display will flash between [F_xx] which are the high digits, then the low
digits of the loop frequency counter. For example: [F_05] + [3413] would represent a frequency of
53,413 Hertz. The highest digit will probably be only a single digit because loop frequency is usually a
five-digit number, between 20,000 to 80,000 Hertz.
Changing the Loop Frequency:
HY-5A detectors can never crosstalk, but if for any reason, you want to manually change the loop
frequency, change the menu selection to a flashing 4 and then press the Select button. Each detector
has a choice of four frequencies. To exit, press the Menu button and the controller will perform a reset
and tune to the new frequency setting.
Call Strength Level:
Knowing the strength level of a detector call is valuable because it provides information about how well
the loop is actually “seeing” a specific vehicle. For example, it may be useful to check to see if the loop
is easily detecting the middle of a high bed semi-truck. The strength of a detector call can be displayed
in real time, on a scale of 1-7. As indicated in the table below, when a detector’s menu setting is set to 2,
and the Select button is pressed, the LCD display will read [LE_x]. If the call strength is level 4 or
less, consider increasing the sensitivity level, by adjusting the rotary switch on the HY-5A detector.
Installer Menu Options Default Description
I24
[ELd0] Test factory ELD 0 0=Run, 1=show freq, 2=show call level 0-7, 3= set Freq 1-4
I25
[iLd0] Test factory IOLD 0 0=Run, 1=show freq, 2=show call level 0-7, 3= set Freq 1-4
I26
[oLd0] Test factory OOLD 0 0=Run, 1=show freq, 2=show call level 0-7, 3= set Freq 1-4
I27
[rLd0] Test factory RLD 0 0=Run, 1=show freq, 2=show call level 0-7, 3= set Freq 1-4
Acronyms: Free Exit Loop = ELd, Outside Obstruction Loop = ooLd, Inside Obstruction Loop = IoLd
Reset Loop Detector = rLd (this is for barrier arm gates only)
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