Controller Terminal Features - Centurion D3 Installation Manual

2 seconds).
! The contact can be used to operate a lamp, which will warn that the gate is about to open.
Selection of pre-flashing is done in FEATURE 10. Three modes and OFF are selectable (The
factory default is OFF):
# Mode 1 - Light comes on only while gate is in motion.
# Mode 2 - Light flashes at 1Hz for the pre-flash time and then flashes in synchronism with the
STATUS LED while the gate is in motion.
# Mode 3 - Light comes on for the pre-flash time and while the gate is in motion.
Positive Close Mode:
Setting positive close mode to ON (FEATURE 9-1) (default is OFF, FEATURE 9-2) will allow the gate to
drive up hard to an end stop without causing the collision circuitry to operate. This Feature operates only
during the final crawl phase in the closing direction.
Crawl Distance:
The Crawl Distance is the distance allowed for the gate to slow down before reaching either the open or
closed limits. Under certain conditions the Crawl Distance may not need to be increased to prevent
hitting the end stops

Controller Terminal Features

Controller Terminal Features
COM The battery/power supply negative terminal. All trigger signals etc. have their return path to one
of the COM terminals.
LIGHT These two terminals provide a normally open potential free contact which is generally used to
switch on a pillar light (courtesy light). It can also be used for other purposes if required.
12V Provides a +12V DC supply for auxiliary equipment such as a radio receiver, photo cells etc. It is
linked directly to the battery positive via the 3A fast-blow auxiliary fuse (see page 41).
TRG A momentary, normally-open trigger device such as relay, pushbutton etc. connected between
TRG and COM will cause the gate to trigger open/closed. Connect multiple trigger devices in
parallel (Refer to page 41).
IRB The signal from the infra red beam (IRB)(photo cell), safety edge, loop or other safety device.
This prevents the gate from closing when the normally-closed contact between IRB and COM is
open. For multiple safety devices wire all contacts in series.
NB:
FRX A momentary normally-open contact from a device such as a free exit inductive loop detector (or
photo cell or pushbutton) which causes a gate which is closed or closing to open or re-open. If
the gate is open or opening the signal has no effect other than to reset the auto-close timer (if
selected). Free exit (FRX) will never initiate a closing cycle. If only the FRX input is used , the auto-
close must be turned on alternatively the TRG input used to close the gate.
LED An output terminal which provides a low current, (approx. 4,5V DC, 20mA) to drive an LED which
can be used to indicate the gate status remotely. If more than 3 LED's are required it is necessary
to fit a multi LED driver card (CP78).
If no safety devices are fitted ensure a wire link is fitted between IRB and COM.
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