Preparing the Installation
11
Doc 01-G0665
Rev A
THREE BUTTON CONTROL (SEQUENCE OF OPERATION)
Open, stop, close. Stop will override all other functions. If closing, open will cause
the operator to stop and reverse to full open. If opening, close will cause operator
to stop and reverse to full close position.
ONE BUTTON CONTROL (SEQUENCE OF OPERATION)
The one button control can be programmed to either function as described above
or to function as a close button only.
DIGITAL MICROPROCESSOR
This is the main circuit board for the operator. It contains all the logic and
intelligence for the system. All the system programming is done on this circuit
board. See page 21. All solid state, with an emergency back-up system that works
even if the processor is missing.
INHERENT OBSTRUCTION PROTECTION
The limit shaft is equipped with an R.P.M. sensor. When the gate meets an
obstruction, the loss of r.p.m’s will cause the gate to reverse. A second obstruction
will cause the gate to stop. A renewed wired input will restart the gate.
EXTERNAL OBSTRUCTION CIRCUIT
This circuit can be used with either a gate edge or a photo beam system. When
either of the tow devices mentioned are activated, the operator will react in a similar
manner to the inherent obstruction described above.
NOTE:
If external entrapment protection is required by the class of
operator, both an open and close protection device must be used.
SPECIAL NOTE ABOUT OBSTRUCTION SENSING FROM EITHER
INTERNAL OR EXTERNAL SYSTEMS
The operator will stop if it senses two sequential obstructions. It will not activate
from any automatic system, including the built in time delay to close. Either a
manual device such as a pushbutton within site of the gate and operator, or the
stop button supplied with the operator must be activated to resume the operator
back to its normal operation.
OPEN ONLY CIRCUIT
Separate open circuits for line-of-sight devices and out-of-sight devices such as
open loops or radio controls.
LOOP CONTROL CIRCUITS
Vehicle control devices such as reversing loop detectors are connected to this
circuit.
TIME DELAY TO REVERSE CIRCUIT
Allows the gate to come to a complete stop before reversing direction.
Approximately ½ second between stop and reverse.
NOTE:
This feature is defeated when either the inherent or external
obstruction circuits are activated.
