Allmatic A1H-U Manual De Instrucciones página 14

Frequency Count / Reset
Press the Frequency Count switch and count the number of flashes on the red LED. Each flash
represents 10kHz. To help to prevent crosstalk when multiple detectors are used for adjacent loops,
perform a frequency count on each detector to confirm the operation frequencies are different.
Following a frequency count cycle, the detector re-initializes
Automatic Sensitivity Boost
The Automatic Sensitivity Boost causes the sensitivity to increase following initial detection. This
feature is useful to prevent dropout when detecting high-bed vehicles. The sensitivity returns to its
normal setting after the vehicle exits the loop. Decimal point on the display indicates ASB on.
Presence output
The Presence settings provides two selections, the output can be set for Infinite Presence or Normal
Presence. Infinite Presence causes the output to remain in detect mode as long as the vehicle
remains on the loop. Normal Presence causes the output to reset after 5 minutes. DO NOT USE
THE NORMAL PRESENCE SETTING UNLESS THE OPENING IS PROTECTED BY A
SECONDARY SAFETY DEVICE.
Delay
The Delay setting provides a 2 second delay before activating after a vehicle enters the loop, for both
Presence and Output B (except when output B is set to Detect-On-Stop).
Fail Safe / Fail Secure
Fail Safe setting causes the A1H-U to activate the Presence output in the event a loop failure. Fail
Secure setting will cause the A1H-U not to activate the Presence output in the event a loop failure.
A1H-U
6-1621238 rev.0 09/12/2013
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