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BLSL2250
3
PROTECTION AGAINST ENTRAPMENT
Usage Class
Gate Operator Category
Horizontal Slide, Vertical lift, and Vertical Pivot
Swing and Vertical Barrier (arm)
Primary Type*
Secondary Type*
Primary Type*
Secondary Type*
Vehicular I and II
Vehicular III
Vehicular IV
A
A, B1, or B2
A, B1, B2, or D
B1, B2, C, or D
A, B1, B2, C, D, or E
A, B1, B2, C, D, or E
B1, B2, or D
A, B1, B2, D, or E
A, B1, B2, D, or E
A, or C
A, B1, B2, or C
A, B1, B2, C, or D
Note - The same type of device shall not be utilized for both the primary and the secondary entrapment
protection means. Use of a single device to cover both the opening and closing directions is in accordance with
the requirement; however, a single device is not required to cover both directions. A combination of one Type
B1 for one direction and one Type B2 for the other direction is the equivalent of one device for the purpose of
complying with the requirements of either the primary or secondary entrapment protection areas.
a
Entrapment protection Types:
Type A:
Inherent entrapment protection system.
Type B1:
Provision for connection of, supplied with, a non-contact sensor (photoelectric sensor
or the equivalent).
Type B2:
Provision for connection of, or supplied with, a contact sensor (edge device or the equivalent)
Type C:
Inherent adjustable clutch or pressure relief device.
Type D:
Provision for connection of, or supplied with, an actuating device requiring continuous pressure to
maintain opening or closing motion of the gate.
Type E:
An audio alarm.
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Summary of Contents for BLSL2250
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