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wallaceperimetersecurity.com
Phone: 866.300.1110
MONITORED EXTERNAL ENTRAPMENT SENSORS
Monitored External Entrapment Sensors
As of January 2016, UL325 standard requires gate operators to monitor the presence of all external
entrapment sensors, including non-contact (Photo Eyes) and contact (Edge) sensors. For operators built
between January 1st, 2016 and July 31st, 2018 only one external entrapment sensor is needed to allow
automatic operation, but all potential entrapment zones must be protected or eliminated. After July 31st,
2018, all Bi-fold gate operators will need a minimum of 2 external entrapment sensors (1 open direction
and 1 close direction) installed before automatic operation is allowed, but all potential entrapment zones
must be protected or eliminated.
The FoldSmart/HySecurity SmartDC Controller monitors all external entrapment sensors connections by
looking for NC contacts connected to input terminals. Smart touch software cycles power to device and
looks for a time delay from when device powers on to when the contact closes (sensor input pulled low,
meaning the sensor is not blocked/tripped).
Three programmable sensor inputs are available for use and must be programmed to a non-zero number
when initial configuration is performed. The three inputs are labeled Sensor 1, Sensor 2, and Sensor 3 and
are configurable in the installer menu (S1, S2, or S3) for the following options:
1 − Not Used
2 − Eye Close
3 − Edge Close
4 − Eye Open
5 − Edge Open
6 − Edge Both
7 − Eye Both (N/A)
It is the installer’s responsibility to determine the number of potential entrapment zones that exist and
program the Sensor inputs according to which type of external entrapment sensor will be used to protect
each zone. If more than three potential entrapment zones exist, then site design may be adjusted to
eliminate risks or a Miller Edge MIM- 62 may be used to connect additional sensors.
Potential entrapment zones on a FoldSmart design are shown in
“UL 325 Compliant Sensors” on page
(see figure at end of UL 325 Compliant Sensors section depicting Swing Gate Common Entrapment
Zones). Refer also to
“Figure 28-1. Photo Eye Placement for External Entrapment Protection” on page
, and Figures 28-2 to 28-5. Included in the drawings are examples of potential external entrapment
sensor mounting/installation locations.
After programming the sensor inputs in the installer menu or during initial startup, the appropriate type
and number of sensors will need to be connected. Figure 25 below shows the wiring and dip switch
settings of an EMX-MON photo eye (typical thru-beam wiring). A retro-reflective photo eye will be similar
and only have wiring similar to the receiver of the thru-beam photo eye.
For UL 325 compliance, all external
entrapment
protection
sensors
must have N.C. sensor outputs
for
monitoring and powering purposes.
Summary of Contents for FOLDSMART
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