Controlled Products Systems Group 3950 - Manual (Page 12)

12
Invisible Light Beam
Protection Area
Safety Reversing Sensor
Bell Wire
Bell Wire
Motor unit
Safety Reversing Sensor
Quick-Connect Terminals
WHT/BLK
WHT
Sensor
Connections
To insert or release wires, push
in tab with screwdriver tip.
Carriage Bolt
1/4"-20x1/2"
Lens
Wing Nut
1/4"-20
Figure 4
Figure 5
MOUNTING AND WIRING THE SAFETY REVERSING SENSORS
• Slide a 1/4"-20x1/2" carriage bolt head into the slot on each
sensor. Use wing nuts to fasten safety reversing sensors to
brackets, with lenses pointing toward each other across the
door. Be sure the lens is not obstructed by a bracket extension
(Figure 4).
• Finger tighten the wing nuts.
• Run the wires from both safety reversing sensors to the
operator. Use insulated staples to secure wire to wall and
ceiling.
• Strip 7/16" (11 mm) of insulation from each set of wires.
Separate white and white/black wires sufficiently to connect to
the operator quick-connect terminals: white to white and
white/black to grey (Figure 5).
ALIGNING THE SAFETY REVERSING SENSORS
• Plug in the operator. The indicator lights in both the sending
and receiving eyes will glow steadily if wiring connections and
alignment are correct.
The sending eye amber indicator light will glow regardless of
alignment or obstruction. If the green indicator light in the
receiving eye is off, dim, or flickering (and the invisible light beam
path is not obstructed), alignment is required.
• Loosen the sending eye wing nut and readjust, aiming directly
at the receiving eye. Lock in place.
• Loosen the receiving eye wing nut and adjust the safety
reversing sensor until it receives the sender’s beam. When the
green indicator light glows steadily, tighten the wing nut.
TROUBLESHOOTING THE SAFETY REVERSING SENSORS
1. If the sending eye indicator light does not glow steadily after
installation, check for:
• Electric power to the operator.
• A short in the white or white/black wires. These can occur at
staples, or at operator connections.
• Incorrect wiring between safety reversing sensors and
operator.
• A broken wire.
2. If the sending eye indicator light glows steadily but the
receiving eye indicator light doesn’t:
• Check alignment.
• Check for an open wire to the receiving eye.
3. If the receiving eye indicator light is dim, realign either sensor.
NOTE: When the invisible beam path is obstructed or misaligned
while the door is closing, the door will reverse. If the door is
already open, it will not close.