Thermal Overload; Origin Sensor Fail; Lightning Protection; Ancillary Equipment - Centurion D3 User Manual

THERMAL OVERLOAD (A10 ONLY)
In the event of the A10 operator being used excessively and the duty cycle rating of
the unit exceeded, the unit will shut down due to thermal overload in order to protect
the system from abuse.
The unit cannot be re-operated until the unit has cooled. To provide indication to the
user that this is the cause of the fault the STATUS LED will flash 2 times every 2
seconds.
ORIGIN SENSOR FAIL (A10 ONLY)
The A10 operator uses an origin switch to ensure it stops in the correct open and
closed positions. If this switch fails for any reason, the operator will shut down. To
provide indication to the user that there has been an origin sensor failure, the
STATUS LED will flash 3 times every 2 seconds.
This condition is treated as serious and the unit cannot be activated again until the
gate has been moved manually either fully open or fully closed, ensuring that the gate
magnet has passed the sensor. If the sensor registers correctly, the unit will reset, and
can be operated again. If the sensor does not re-register, the unit will remain in the
locked state.
If the system cannot be reset by following the procedure above, it is a clear
indication that the SENSOR is faulty or not switching reliably. It is important that
the operation of the SENSOR is checked by a qualified technician.

LIGHTNING PROTECTION

All CENTURION controllers have on board lightning protection. The protection
circuitry was designed in conjunction with the CSIR. Provided that the system has
been properly earthed the protection will significantly improve the resistance of the
system against lightning strikes.

Ancillary Equipment

PROTECTION BEAM (OPTIONAL, BUT RECOMMENDED)
An infrared beam, or underground loop, across the gate entrance may be connected
to the controller as an additional safety feature. When a motor vehicle activates the
loop or beam the following occurs:
14 - Centurion Sliding Gate Operators User Guide