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This is Part 2 of a multi-part,series related to UL 325. In this segment we will examine the different types of entrapment protection that is required on the four Vehicular classifications that were discussed in in the previous newsletter.

**Horizontal slide, vertical lift and vertical pivot Swing and vertical barrier (arm),**
Usage Class	Primary type*	Secondary type*	Primary type*	Secondary type*
Vehicular I and II	A	B1,B2, or D	A, or C	A, B1, C, or D,
Vehicular III	A, B1, or B2	A, B1, B2, D, or E	A, B1, or C	A, B1, C, D, or E
Vehicular IV	A, B1, B2, or D	A, B1, B2, D, or E	A, B1, C, or D	A, B1, C, D, or E

Note -- The same type of device shall not be utilized for both the primary and 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 B 1 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 means.

Type B1 -- Provision for connection of, or supplied with, a non-contact sensor (edge device or the equivalent). See 30A. 1.4,

Type B2 -- Provision for connection of, or supplied with, a contact sensor (edge device or equivalent). See 30A. 1.6 and

Type D -- Provision for connection of, or supplied with, an actuating device requiring continuous pressure to maintain opening

30A. 1.2 A gate operator installed in accordance with the manufacturer’s

instructions utilizing entrapment protection designated Type A in Table 30A.1 to comply with 30A. 1.1 shall upon sensing an obstruction in any direction:

a.) Stop and initiate the reversal of the gate within a maximum of 2 seconds. The gate operator shall reverse the gate a minimum of 2 inches.The gate operator shall require a renewed intended input (via wired or wireless control or integral control, a loop sensor, a card reader or similar device) prior to enabling any automatic actuation devices such as a timer or any other maintained input that was present when the reversing function occurred.

b.) Stop the gate upon sensing a second sequential obstruction.The gate operator shall require a renewed intended input (via an integral control or a wired remote intended to be in the line of sight of the gate) prior to enabling any automatic actuation devices such as a timer or other maintained input that was present when the reversing function occurred. An alarm shall comply with paragraph 30A. 1.1A.

30A. 1.4 A gate operator utilizing entrapment protection designated Type B 1 in Table 30A. 1 by having provision for connection of or providing with the operator a non-contact sensor (photoelectric sensor or equivalent) to comply with 30A. 1.1 shall when the sensor is activated:

a.) Stop or reverse the gate within a maximum of 2 seconds an obstruction in both the opening and closing directions

b.) Stop the gate upon sensing a second sequential obstruction in the opposite direction while in the process of reversal as described in (a)

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 activated.

30A. 1.5 With reference to 30A. 1.4 a non-contact sensor is required to function only to protect obstructions in the gate’s direction of travel.

30A. 1.6 A gate operator installed in accordance with the manufacturer’s instructions utilizing entrapment protection designated Types B 1 and B2 in Table 30A. 1.1 by having provision for connection of such device or providing such device with the operator shall monitor for the presence and correct operation of the device including the wiring to it at least once during each open and close cycle. The operator shall function as required by 30A. 1.15 in the event the device is not present or a fault condition occurs which precludes the sensing of an obstruction. A fault condition includes an open or short circuit in the wiring that connects the external entrapment protection device to the operator and the device’s supply source.

30A. 1.7 A gate operator utilizing a non-contact sensor for entrapment in accordance with 30A.1.1 shall be supplied with instructions in compliance with 51.8.4.

30A. 1.8 A non-contact sensor (photoelectric sensor or equivalent) supplied with or separately supplied for a gate operator that is intended to reduce the risk of entrapment or obstruction shall comply with the applicable requirements in All Devices ,Section 32 and Photoelectric sensors Section 33. A separately supplied sensor shall comply with 53.3.3 53.3.4 and 53.3.5.

30A. 1.9 A gate operator installed in accordance with the manufacturer’s instructions utilizinge enrapment protection designated Type B2 in Table 30A.1 by having provision for connection of or providing with the operator a contact sensor (edge sensor or equivalent) to comply with 30A. 1. 1 shall when the sensor is activated:

a.) Stop and initiate the reversal of the gate within a maximum of 2 seconds of sensing an obstruction in any direction. The gate operator shall reverse the gate a minimum of 2 inches.

b) Stop the gate upon sensing a second sequential obstruction in the opposite direction while in the process of reversal as described in (a).

c) Result in a gate at rest remaining at rest unless a Type D device is actuated and

d) After the sensor is actuated no more than two times during a single closing cycle or once in a single opening cycle require a renewed intended input (via wired or wireless control or integral control a loop sensor a card reader or similar device) prior to enabling any automatic activation devices such as a timer or any other maintained input that was present when the reversing function occurred.

30A. 1.9A With reference to 30A. 1.9 a contact sensor is only required to sense obstructions in the gate’s direction of travel.

30A. 1.10 A gate operator utilizing a contact sensor for entrapment protection to comply with 30A.1.1 shall be supplied with instructions on the placement of the sensors for each Type of application in compliance with 51.8.4.

30A. 1.11 A contact sensor (edge or equivalent) supplied with or separately supplied for a gate operator that is intended to reduce the risk of entrapment or obstruction shall comply with the applicable requirements in All Devices. Section 32 and Edge Sensors Section 34. A separately supplied sensor shall comply with 53.3.3 53.3.4 and 53.3.5.

30A. 1.12 A swing-gate operator utilizing entrapment protection designated Type C in Table 30A.1 to comply with 30A. 1.1 shall upon sensing an obstruction in any direction stop the gate and:
a) Not result in a force after 100 000 cycles of operation under rated load of more than 10 percent higher than the initial setting to stop the gate.
When adjustable the initial setting is to be at the setting for maximum force and
b) Be readily accessible for inspection and repair and not readily rendered inoperative.

30A. 1.14 A gate operator utilizing entrapment protection designated Type D in Table 30A.1 by having a provision for connection of or providing with the operator a continuous pressure actuation device to comply with 30A.1.1 shall be constructed so that a wireless control shall not operate the gate. Also see paragraphs 51.8.4 (e) 52A.1.5 and 52A.1.6.

30A. 1.15 A gate operator installed in Accordance with the manufacturer's instructions utilizing entrapment protection designated Type D in Table 30A. 1 to comply with 30A.1.1 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.

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