The ST4 series from Panasonic offers a single beam safety sensor for machine guarding applications that do not require full light curtain setup. The ST4 series can be expanded to allow for 6 sensors wired in series and up to three controllers for a total system of 18 sensors. This allows for coverage of a larger area with full interference prevention. The sensor heads of the ST4 series have a compact size that is similar to that of the CX-400 general purpose sensors. They also utilize the same mounting pitch for a simple, standardized mounting approach.
The number of sensor heads and controllers can be easily changed to meet the heights and the required numbers of the protection area.
The ST-4 series features a beam interruption indicator in both the emitter and receiver, which can be used for both operation confirmation and for beam axis alignment. Additionally, the stability indicator indicates if the incident light intensity exceeds 150% in stable operation.
The light received condition of the sensor heads can be confirmed by the controller, as well as any abnormal sensors during lockout can be identify.
The sensor heads feature an emission adjuster that can be used to reduce the emission to control any interference to the surrounding sensors.
A single controller unit can be configured for PNP / NPN output switching, which reduces the number of parts needed.
The ST-4 series features easy connector connections, removable terminal blocks, semiconductor output, and spring method terminal blocks, all of which work to reduce setup time and maintenance.
If the sensor head is interrupted by an object, or there is an emergency stop before muting conditions have been established, the sensor heads will be temporarily deactivated following a smooth restart.
Detecting intrusion into danger area
Confirming safety at mounting machine