INSTALLATION OPTIONS
Open Loop or Closed Loop. Open Loop anti-sway operates “blind” except for continuous input of hoist, trolley, and crane positions. Closed Loop is required for precise moves to a destination, for removal of sway induced by non-vertical lift or other sources. These two methods are implemented together for maximum effectiveness.
PLC Function. SmartCrane can provide a function block to support open loop motion control directly in almost any PLC or drive. This function supplies motor speed demands to prevent sway caused by operator control.
Closed Loop. Closed loop motion control requires a machine vision camera mounted on the trolley above a passive reflector on the head block or hook. SmartCrane uses the camera tracking data to remove sway at initial hoist and to make final adjustments to minimize both residual sway and position error simultaneously.
Touch Screen Control. A computer drives graphics and pushbuttons on one of several versions and screen sizes, from 12” to 17”. The touch screen may be mounted in the crane or remote. Multiple cranes can be controlled at one remote station.
PLC Interface. The dedicated SmartCrane computer operates on an Ethernet LAN, exchanging data with PLC, SmartCamera, and external data systems. SmartCrane can supply Ethernet Gateways for PROFIBUS or other networks.
Other Sensors. SmartCrane can provide and integrate other vision or range sensors to measure the crane’s environment in real time, such as measuring a truck or ship position for container terminal operations.
