6.4.13 Travel Limits and Anti-Collision Devices

Travel limits, which restrict the long travel of hoists with power operated trolleys, are available. These may be used to position the hoist, as may be necessary on a production line, or to prevent the hoist colliding with obstacles or other hoists which may be mounted on the same runway. Various types of limits and devices are available to suit differing applications. These range from simple limit switches and striker plates to infra-red and microwave sensors.