UL325-2018 New Requirements for Gate Operators

Any gate operating equipment manufactured after August 1, 2018 must meet new safety requirements.

In a nutshell:

Slide Gates Operators Must have monitored entrapment protection on both open and close cycles. Previously, this monitored entrapment protection was only required on the close cycle.

Swing Gate Operators may also require additional entrapment protection devices where pinch points are created by operating the gate(s).

The following is from DASMA Technical Data Sheet #353 – http://www.dasma.com/pdf/publications/techdatasheets/operatorelectronics/tds353.pdf

1. For MOST installations, at least 2 independent means of protecting against entrapment are
required in each direction of travel. For ALL installations, at least 2 independent means of
protecting against entrapment are required in each direction WHERE THERE IS A RISK OF
ENTRAPMENT.
2. ALL external means of protecting against entrapment must be monitored.
3. Slide gate operators for Classes I and II, and vertical lift-gate operators shall not exceed a speed
of 1 foot per second when the operator is pulling 75 pounds or more.
4. Manufacturers will be required to specify a brand and model number of external sensors
compatible for connection to an operator. This provision arose from concern over the gate
operator and external devices acting in tandem as a system, with a maximum allowable fault rate
of 6 failures in 1 million hours of use (which equates to 115 years of continuous operation).
5. After sensing an obstruction, reversing must begin within 2 seconds. This requirement is intended
to keep a person from being entrapped in a stationary position by the gate system. After the first
contact the gate must reverse and travel a minimum of 2 inches. If a second contact is detected by
a Type A device (inherent sensor), the gate must stop only and not reverse. If a second contact is
detected by Type B1 or B2 device (photoelectric sensor or edge sensor), the gate must stop but
may also reverse.
6. After any obstruction stop or reversal by either an A or B2 device, the timer-to-close is disabled
until reset. Both A and B2 devices sense direct gate contact with an obstruction, and the devices
must perform their intended function without interference from a timer-to-close action.
7. A Type A (inherent sensor) must stop the gate upon sensing a second sequential obstruction, must
activate an audio entrapment alearm, and must not operate until an intended hard wired input is
received. A person within the line of sight of the gate must see what has caused the second
sequential obstruction and must resolve this obstruction before operating the gate.
8. If a Type C device is chosen, swing gates must not exert more than 40 pounds of force at the
leading edge of the shortest recommended gate length, two seconds after initial start-up.