SPEEDGATE Installation and Maintenance Manual
Revision 1 - MAY 2023
71
PHOTO EYE INSTALLATION
For UL 325 compliance, all external
entrapment
protection
sensors
must have N.C. sensor outputs
for
monitoring and powering purposes.
Wire Gauge and Type:
18AWG 2C Through-beam Photo Eye Transmitter, Shielded
18AWG 4C Through-beam Photo Eye Receiver, Shielded
When unpacking photo eyes,
DO NOT DISPOSE OF
THE RECEIVER SUNSHIELDS
(“alignment cones”). The
sunshields are effective at reducing the effects of solar
interference or crosstalk.
Mount photo eye receivers to columns with the shields
intact and adjust as required. If two sets of photo eyes are
being installed on one column and crosstalk is occurring,
remounting photo eyes in the following configuration
may eliminate this issue:
•
Install the transmitter above the receiver on one
column.
•
Install the receiver above the transmitter on the
opposing column.
•
Angle the top device upward and bottom device
downward to avoid crosstalk.
1. Remove cover from photo eye by removing the 4 corner screws. The cover should not be placed on
photo eye until the photo eye transmitter and receiver are aligned.
2. Figure 15 shows the wiring and DIP switch settings of an EMX-MON photo eye (typical through-beam
wiring), the type of photo eye normally shipped with a SpeedGate by Wallace Perimeter Security.
Figure 15. EMX-IRB-MON Photo Eye Wiring
Receiver DIP Switch Settings
SW1
SW2
SW3
SW4
OFF
OFF
ON
OFF
The operator cycles power to the
transmitter while monitoring the
receiver N.C. (Normally Closed) contacts
for proper operation.
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