Chamberlain LiftMaster Professional GOC2A Instructions page 11

ELECTRICAL INSTALLATION
The motor control unit comprises an electronic
microprocessor-control system employing the latest
technology. It offers all connection possibilities and functions
necessary for safe and reliable operation.
The electrical connections are given in Illustration 2.
The control box containing the motor control module is to be
fitted with cable entry at bottom. It should not be continuously
exposed to direct sunlight. For weather protection, we
recommend the fitting of a small protection roof.
Thanks to the electronic control unit, fine adjustment of the
push-pull torque is possible. When correctly adjusted, gate
movement can be easily blocked by hand.
During operation the gate can be stopped at any point using
the remote control or optional keyswitch.
PROTECTION OF CONTROL UNIT
BY FUSE F1 (5 AMPERE)
The fuse is activated by connection errors and/or short-
circuits in the 230V range of the protection circuit.
Never replace the fuse by a stronger one. This could have
fatal consequences. It also leads to immediate invalidation of
the warranty, also for all ancillary equipment.
Pressure pads complying with ZH1-494 (Guidelines for
power-operated doors and gates) are required for protection
of points subject to crushing or shear forces.
In the case of permanent mounting, means of separating the
system from the mains must be provided. The contact
spacing of the main switch used in this connection must be at
least 3 mm. When the main switch is turned off, all poles of
the drive must be voltage-free.
Remote-controlled gates must have an emergency OFF
switch.
2
CONNECTIONS
Terminal PE Connections for earthing the motor, power
supply and ancillary equipment
(green/yellow)
Terminal PE
Terminal PE
MAIN SUPPLY CONNECTIONS
Terminal L1 Terminal 2
Terminal MP N - (blue)
FLASHING LIGHT CONNECTIONS
Terminal 1 Flashing light N (blue)
Terminal 2 Flashing light L1 (black)
MOTOR CONNECTIONS
Terminal 3 Motor rotation direction right
Terminal 4 Motor MP (blue)
Terminal 5 Motor rotation direction left
LOW-TENSION CONNECTIONS
Emergency stop or photoelectric barrier
Function of the circuit is NC
(contact is closed when system is running).
Terminal 6 COM (common)
Terminal 7 Contact strip or additional emergency stop
Push-button or key switch
Terminal 8 COM (common button connection)
Terminal 9 Connection for button or switch (NO). The
gate is partly opened (pedestrian function).
The duration is adjustable with the aid of
potentiometer P2, in the range 2 - 16 sec.
Terminal 10 Connection for button or switch (NO). The
gate is fully opened.
Infrared barrier or contact list with preliminary function testing
Terminal 11 Output connection for a contact strip,
photoelectric barrier or emergency stop.
Definition of contact by dip switch 1.
Terminal 12 Input connection for a contact strip,
photoelectric barrier or emergency stop.
Terminal 13 Output connection for a second contact strip,
photoelectric barrier or emergency stop.
Definition by dip switch 2.
Limit switch
Terminal 14 Limit switch for switching off in direction
OPEN (red). Contact function is NC.
Terminal 15 COM end switch for common connection
(white)
Terminal 16 Limit switch for switching off in direction
CLOSED (grey). Contact function is NC.
Power supply for Infrared sensor and
DW-strip
Terminal 17 volt DC, polarity MINUS, for Infradred barrier
receiver
Terminal 18 volt DC, polarity PLUS
Terminal 19 volt DC, polarity MINUS, for photoelectric
barrier transmitter
L1 - 230V/50-60Hz (black)
230V/50-60Hz
230V/50-60Hz
230V/50-60Hz