Test the Vehicle Loop
Run diagnostic tests on the vehicle loops before installing Hy5B vehicle detectors to ensure the loops are in
good working condition. The following tests cannot guarantee a functioning loop, but failure of either test
means that the loop may be damaged or need to be replaced.
1. Test – Measure the resistance of the loop and lead-in wire. It should not exceed 4.0 ohms.
2. Test – Measure the resistance to earth ground with a Megohmeter (Megger). It should be 100
Megohms or more. Below 50 mega-ohms, install a new loop.
NOTE:
Loops may function at 100 Megohms or less, but will not be reliable (for example, when the ground is wet from rainfall). A
low megohm reading on the resistance to earth ground usually occurs due to broken or moisture saturated insulation. Be sure to use
wire with a direct burial jacket such as XLPE or XHHW wire. Do NOT use THHN wire.
Check the Version of Software
1.
In the field, open the gate operator’s Control Box.
2. To view the software version, press the RESET key. To use Hy5B
features, the software version must be h4.55 or h5.56 (or later).
Otherwise, the Hy5B reverts to Hy5A emulation mode.
3. If you wish to update the software, download the current
S.T.A.R.T. software to your PC laptop, and then load the gate
operator code to the controller board before installing Hy5B
vehicle detectors. See
www.hysecurity.com
for updates.
NOTE:
Hy5A emulation mode does not include all the features of Hy5B. If you are replacing Hy5A detectors and updating the gate
operator software, be aware Build Year 1 (BY1) or Build Year 2 (BY2) will need to be addressed. BY2 requires monitoring of external
entrapment protection sensors per UL 325 - 2016 Standard of Safety. If the gate operator was installed prior to 2016, BY1 may be
used. For more information, refer to the gate operator’s product manual.
www.hysecurity.com
© 2017
Vehicle Detector Installation and Loop Layouts
MX3650-01 Rev. D
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