13
RAM 100 • 1000 • 5500
RAMSET
www.ramsetinc.com
ENTRAPMENT AND SAFETY PROTECTION
General entrapment protection provisions
A vehicular gate operator shall have provisions for, or be supplied with, at least two independent entrap-
ment protection means as specified in Table 1. At installation, both entrapment protection devices must be
installed.
A gate operator utilizing entrapment protection designated Type B1 in Table 1 by having
provision for connection of, or providing with the operator, a non-contact sensor (photoelectric sensor or
equivalent) shall, upon sensing an obstruction in the direction of travel of the gate:
a) Stop or reverse the gate within a maximum of 2 s,
b) Stop the gate, or stop and initiate reversal of the gate upon sensing a second sequential
obstruction.
c) Result in a gate at rest remaining at rest unless a Type D device is actuated, and
d) Return to normal operation when the sensor is no longer actuated.
A gate operator installed in accordance with the manufacturer’s instructions utilizing external entrapment
protection designated Types B1 or B2 in Table 1 by having provision for connection of such device, or provid-
ing such device with the operator, shall monitor for the presence and correct operation of the device at least
once during each open and close cycle. Should the device not be present, or a fault condition occur that
precludes the sensing of an obstruction, including an interruption of the wireless signal to the wireless device
or an open or short circuit in the wiring that connects the external entrapment device to the operator and
the device’s supply source, the operator shall require constant pressure or actuation to initiate and continue
movement of the gate in either the opening or closing direction. Upon removal of pressure, movement of the
gate shall cease. Unless supplied with separate Open and Close buttons, each subsequent pressing of the
control button shall reverse direction of the gate.
Horizontal slide, vertical lift, and vertical pivot
Entrapment protection types**
A, B1, B2 or D
NOTE
- The same type of device shall not be utilized for both entrapment protection means. Use of a
single device to cover both the opening and closing directions is in accordance with the requirement: how-
ever, 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
entrapment protection means.
**Entrapment protection types:
Type A
- Inherent entrapment protection system.
Type B1
- Non-contact sensor (photoelectric sensor or the equivalent).
Type B2
- Contact sensor (edge device or the equivalent).
Type D
- Actuating device requiring continuous pressure to maintain opening or closing motion of the gate.
Table 1
