If a safety function (emergency stop or safety gate) is activated on a system in zone 1 or zone 2, both systems are powered down in a safe and controlled manner. Only after they are shut down can persons enter the hazardous area (for instance access through releasing a safety gate lock (SAFEMASTER STS)).
A person wants to enter a secure system area (zone 2). The person activates the emergency stop in zone 1. The emergency stop signal from zone 1 is transmitted wirelessly to zone 2. The machine in zone 2 powers down in a controlled manner. As soon as it reaches a safe status, it returns a release signal for zone 2 (for instance, approve safety gate locking). Only then can the person safely enter zone 2.
A wireless safety module secures a production system in zone 2. It first works fully autonomously without a wireless connection. A second wireless safety module is located in the forklift. To pick up produced parts on pallets, the forklift (zone 1) has to drive into the system. In order to gain access to the system (zone 2), the forklift must connect wirelessly and position itself in the specified start zone (green) and authenticate itself via infrared connection. Access to the hazardous area is approved and the forklift can drive into zone 2. The safety functions (such as emergency stop) of both modules are now active, defined control functions can be activated by the mobile vehicle. In a hazardous situation, both the forklift and the machine operator can trigger an emergency stop. Your advantage: Access to approved control functions for the loading crane and mobility and safety in the system‘s hazardous area.
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