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Choosing Secondary Entrapment Protection
The site designer or installer must determine which secondary entrapment sensor devices will be installed
with the Kinetic operator to meet UL compliance. The type of entrapment sensor device systems are
described below. For a complete listing of the requirements, see UL 325 Safety Standards.
NOTE
A photoelectric eye or contact sensor is also required to protect against possible entrapment
If the gate opens to a position less than 16 inches from any object, such as a post or wall.
Usage Class
Class 1, 2, 3
Class 4
To comply with UL 325, refer to the chart and take the following steps:
1. Select the Usage Class according to the gate's locale and purpose.
2. The required UL 325 primary Type A sensor is an integral part of the Kinetic system.
3. Based on the gate's usage class, choose Secondary Type Devices: B1, B2, C, D, or E.
•
To comply using B1 - install non-contact sensors (photoelectric sensor or the equivalent).
•
To comply using B2 - install contact sensors (edge sensor device or the equivalent).
•
Mounted beyond 6 feet (183cm) of the gate, to prevent users from touching or accessing the gate
To comply using a Type D device requires a CONSTANT HOLD push-button station. This
CONSTANT HOLD push-button station must be the only device that opens and closes the
gate. It can only be used where the gate and push button station will be monitored by personnel
24 hours a day in full view of the gate area. An automatic closing device (such as a timer, loop
sensor, or similar device) must not be employed. A Warning placard stating, "WARNING -
Moving Gate has the Potential of Inflicting Injury or Death - Do Not Start the Gate Unless the
Path is Clear" must be placed adjacent to the gate operator controls.
CAUTION
While compliance is possible with Type C, which is a low force limiting clutch, the Kinetic
operator does not utilize a clutch, therefore this option is not available.
Similar compliance issues exist with a Type E device (audio warn before operate alarm). A Type
E device is permitted as a means of secondary entrapment protection by UL 325 in Class IV
applications, but it is not recommended by Wallace International because a buzzer warns, but cannot
protect against possible entrapment. Wallace International highly recommends, even for Class IV
use, that secondary entrapment protection (edge or photo-eye sensor) devices be installed to detect
possible entrapment.
Rev: A
Secondary Entrapment Protection Sensors
Primary Device Type
A
A
Secondary Device Type
B1, B2, C or D
B1, B2, C, D or E
S-7
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