FlexiForce LiftMaster 773E, Manual

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MODIFICATION
The photocell's receiver part contact is normally closed (NC contact), whenever
the receiver is saved and aligned with the transmitter. Should a normally opened
(NO contact) be required, remove the electronics module from the plastic mount-
ing, cut through track A and execute the weld B, as shown in figure 7.
Select suitable voltage (12 V / 24 V) with the jumper as shown in figure 2a.
5. After connecting the photocells, operate the drive.
Notes: The transmitters green LED (6) lights up if voltage is impressed.
The receivers red LED (7) glows if TX and RX aren’t properly aligned or
the if the beam is interrupted by an obstruction (Fig 2a).
6. Close the housing of the photocell.
4
INITIAL OPERATION AND TESTING OF PHOTOCELLS
• Open the door with the remote control or a switch.
• Place an obstacle between the transmitter and receiver to interrupt the infrared
beam.
3
TROUBLESHOOTING
The LED indicator on transmitter and/or receiver does not light up after installa-
tion. Check the following points:
• Power supply of the system
• Potential short-circuit
• Incorrect cable connection between sensor and controller
• Broken or missing cable
• Polarity of the cables are interchanged
TECHNICAL DATA
Protection class: IP44
Temperature range: - 10°C + 70°C
Range: 25 m
Power supply: V AC/V DC 12/24+/-10%
Consumption RX (24 V AC): 40 mA
Consumption TX (24 V AC): 50 mA
Relay contacts max. current: 1 A
Relay contacts max. voltage: 30 V DC
Accessories (Fig.8)
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5