SICK presents the M4000 Advanced light beam safety devices that enable safe material flow processes by efficiently differentiating between humans and materials in the plant.
The M4000 Advanced light beam safety devices ensure exit monitoring for safe human-material differentiation while guaranteeing maximum plant availability by fast diagnosis in case of malfunction.
Working in combination with the UE403 safety switching device and application-specific muting accessories, the system is capable of monitoring access to hazardous areas and simultaneously allowing material transports through the protective field.
Similar to other electro-sensitive protective equipment, M4000 Advanced light beam safety devices are designed to shut off machinery on detection of entry into the hazardous area of machines during operation. Material transport is however enabled by employing muting solutions that bridge the active protective device temporarily using additional sensor signals.
During the muting, the temporal and logical sequence of signals is evaluated and monitored by muting sensors such as photoelectric sensors, which helps achieve safe human-material differentiation.
Space-saving and intelligent: exit monitoring
The M4000 Advanced multiple light beam safety devices with the exit monitoring function was developed for applications in which the material transport to be protected takes place only in one direction, out of the storage area.
In this arrangement, the two muting sensors are located in a sheltered place within the hazardous area, saving time and costs when commissioning while eliminating the danger of misalignment of the muting sensors during ongoing operations. In addition, this approach significantly reduces the space requirements in the facility’s outlet zone.
Higher availability due to additional diagnostic functions
Extended diagnostic functions in the M4000 Advanced light beam safety devices ensure even higher plant availability and transparency concerning the monitoring functions and muting processes. Any error occurring in muting processes for all signals engaged in the muting cycle can be represented free of losses, which can also be saved in a file by means of the data recording function to ensure swift and well-directed troubleshooting.
An additional staggered functional diagnosis is also possible with the ability of the M4000 Advanced to save the last shutdowns of the system in an event history. This makes it possible to recognise errors in the muting sequence, optimise processes and minimise downtimes in the material flow.