CENTURION SYSTEMS D2 Turbo Installation Manual page 59

There is a default two second delay
before the gate opens. This is to
warn the pedestrian that the gate is
about to move.
It will also give the person enough
time to move their hand away if they
are reaching through the gate to
operate a keyswitch or a keypad.
If the Courtesy Light (page 64) is
connected to the D2 Turbo control
card, it will flash indicating that the
gate will open approximately one
metre. The gate will close after a
default time of five seconds.
The gate can be kept open by keeping a trigger on the input (keeping your key in the
keyswitch, for example) – once removed the gate will close after the default five seconds.
If a Closing Safety Beam (page 60) is fitted and the beam is broken while the gate is
closing, the gate will stop and open to the Pedestrian Opening position.
The gate will remain open while the beam is broken and the five second (fixed) Autoclose
Delay will only commence once the beam has been cleared.
For safety reasons, it is recommended that all Pedestrian Keyswitches and
keypads are installed on the opposite end of the gate to where the operator is
installed.
Safety Beam(s)/Photocell(s) (optional, but recommended)
It is always recommended to connect additional safety mechanisms to the D2 Turbo/
D2 Turbo Low-Voltage instead of relying only on the inherent anti-crushing protection,
referred to above. The typical device is an infrared Safety Beam/Photocell which
can detect the presence of any vehicle, person or pet that breaks the beam and
communicates back to the D2 Turbo that something is in the path of the gate.
Another option is an Inductive Loop Detector, which is mounted in the ground, adjacent
to the gate, which is very effective at detecting vehicles or the like, but not persons or
pets.
www.CentSys.com page 59
FIGURE 81