Controlled Products Systems Group 6050-080 - Manual (Page 7)

Page vii
This vehicular gate operator is equipped with an inherent adjustable clutch (Type C - Primary) and an
inherent (Type A - Secondary) entrapment sensing system. This system will sense an obstruction in
both the opening and closing gate cycles, and will cause the gate to reverse direction should an
obstruction be encountered. If the system detects a second obstruction before reaching the full open
or close limit after the initial reversal, an alarm will activate and the operator will require a reset before
resuming normal operation. See Section 4 for more information.
EXTERNAL ENTRAPMENT PROTECTION
Non-contact and contact sensors must be installed individually or in combination with each other to
provide external entrapment protection. For gate operators utilizing a non-contact sensor:
• See diagram below for placement of non-contact sensors.
• Care should be exercised to reduce the risk of nuisance tripping, such as when a vehicle trips
the sensor while the gate is still moving, and
• One or more non-contact sensors shall be located where the risk of entrapment or
obstruction exists, such as the perimeter reachable by a moving gate or barrier.
For gate operators utilizing a contact sensor:
• A hardwired contact sensor shall be located and its wiring arranged so that the
communication between the sensor and the gate operator is not subjected to mechanical
damage.
• A wireless contact sensor such as one that transmits radio frequency (RF) signals to the gate
operator for entrapment protection functions shall be located where the transmission of the
signals are not obstructed or impeded by building structures, natural landscaping or similar
obstruction. A wireless contact sensor shall function under the intended end-use conditions.
ENTRAPMENT PROTECTION