Monitoring danger zones with 2D laser scanners

In situations where man and machine work together, it is critical to maintain a safe work environment for everyone. The task is made easier using Pilz’s PSENscan 2D laser scanners.

When a person enters a configured warning field or protected field, the PSENscan 2D laser scanner detects that action. If the person is in the warning field of vision, the movement of machinery can be subjected to controlled braking. If the person then moves into the protected field, the machinery movement is quickly shut down.
These protected fields and warning fields can be configured with flexibility and adapted to suit individual conditions.

Monitoring increases productivity

PSENscan monitors up to three separate zones simultaneously and up to 70 switchable configurations can be set up, making the application more productive.

Up to four safety laser scanners can be connected in series in accordance with the master-slave principle, considerably reducing the cabling and set-up work.*

When combined with PNOZmulti configurable small controllers or the controllers in Pilz’s PSS 4000 automation system, you have a complete, economical solution.

Also, with a protected field range of 3 to 5.5 metres for the safety zone, even large areas can be covered with just one device. The warning zone covers up to 20 metres and enables a person to be warned, by an audible signal for example, or enables a machine reaction such
as deceleration to be triggered. This protects the application from standstill and, at the same time, increases safety and productivity.

PSENscan safety laser scanners offer two-dimensional area monitoring with a large opening angle of 275°. This means that fewer devices are required where several adjoining sides of a machine or Automated Ground Vehicle (AGV) are to be monitored. That reduces capital expenditure and increases the cost-effectiveness of the application.

Flexibility is also a key feature of PSENscan, as safety zones and warning zones of various sizes can be defined for set-up and production mode, or zones, can be adapted to suit the workpiece that is being processed. The ability to adapt simply and flexibly saves time and effort during the set-up mode. As a result, these laser scanners can be easily integrated into diverse applications.

In areas where visibility is poor, and where robots are used, it is important to protect the personnel against encroachment from behind or from the side. A robot, though predicable in its movements, is not aware of its surroundings. Pilz 2D laser scanners can detect when a person is present inside the danger zone.

Material feeds

Pilz PSENscan is also suited to applications where material is being fed in and out simultaneously, such as in logistics areas or where materials are moved from one

place to another. Sensors can distinguish between humans and materials. If the approved material is detected, the material can pass. Should a person enter the protected field, access remains closed. The hazardous movement comes to a standstill.

Easy configuration and a great memory

Pilz’s PSENscan Configurator is used to set-up PSENscan. An ethernet port is used to connect PSENscan to the configuration computer, enabling the operator to easily set up the safety and warning zones, in addition to other settings.

The safety laser scanner uses a teach-in mode to record fixed obstacles in its environment, which can then be excluded from the monitoring zones from the outset. That simplifies set-up and reduces commissioning times.*

As the complete configuration can be stored on an exchangeable memory module, if you need to swap a device, the new scanner can be simply fitted with the existing memory module – without the need to repeat the configuration.

PSENscan safety scanner was designed to protection type IP65 but that’s not all as the device has been optimised so that errors triggered by dust particles are detected
and avoided. It also shows status information or error messages, such as a cleaning prompt.

*Functionality available in the Advanced version of the PSENscan.

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