Today, Wuxi Rihuan Sensor Technology Co., Ltd. will introduce to you that safety photoelectric barriers must not be short-circuited or shielded. Correct handling is the key.
Safety grilles, as the core protective device in high-risk scenarios of industrial production, are used to build a safety barrier around equipment such as stamping and bending machines. Once the signal is blocked, an emergency stop signal will be triggered, effectively preventing personal injury accidents. Any act of short-circuiting or shielding the signal violates safety regulations and poses significant safety hazards. Such operations must never be carried out.
From a technical perspective, some safety grilles output signals in the form of relay dry contacts or solid-state devices. The so-called short circuiting is the act of intentionally creating a permanent path in the safety output circuit, deceiving the control system into determining that there is no obstruction, directly undermining the inherent safety design of the equipment, and easily causing production accidents.
When the safety grille frequently triggers a shutdown and affects production, this is an important safety alert, and it needs to be handled correctly according to the following steps:
Examine the causes of false triggering: Check if the grille has triggered falsely due to loose installation, equipment vibration, dust contamination on the optical surface, strong light interference, or accidental passage of small objects in non-hazardous areas.
Standardize on-site operation procedures: Ensure that the operators have received professional training and are familiar with the correct entry and exit methods within the protected area, to prevent abnormal triggering of the grating due to human operation.
Professional maintenance and calibration: Qualified professionals use specialized tools to clean, inspect and calibrate the grating. If the grating itself is faulty, the original factory-certified parts will be replaced in a timely manner.
Compliance optimization control procedure: Under the premise of ensuring safety, communicate with the equipment manufacturer. Enable the security-verified shielding function in the safety PLC and other control systems. Use it only temporarily during specific controlled periods such as debugging and maintenance, and this function needs to be activated through security keys, passwords, and other permission management. At the same time, additional safety protection measures should be equipped.
Rihuan Sensing is a high-tech electronic enterprise specializing in the research and production of industrial automation sensors. It has been deeply engaged in the field of safety gratings for many years and can offer a variety of series of safety gratings products such as RHC compact type, RHD diffuse reflection type, and RHE four-level type. It also provides standard and non-standard customized services. With high-quality products and excellent services, it builds a safety protection line for industrial production. The company adheres to the core values of "Quality is the life of the enterprise, continuous innovation, and customer first", and provides high-performance safety gratings and supporting solutions for various industries, helping enterprises achieve the dual goals of safe production and efficiency improvement.
