SHANGHAI, April 7, 2022 /PRNewswire/ -- Recently, SGS, an internationally recognized testing, inspection and certification body, issued a functional safety certificate for the CZSR8501 series safety relays of Shanghai Chenzhu Instrument Co., Ltd. (hereinafter referred to as Chenzhu), marking that the product is designed in accordance with the strict requirements of the ISO 13849 functional safety standard, and the circuit architecture of the safety function meets Cat.3 and reaches the PL e safety level.

The international standards common to AGV/AMR/unmanned forklifts will be updated in 2020, and the latest versions of ISO 3691-4:2020 and EN 1175:2020 require a high level of safety for the safety functions of such products (some safety functions need to be PL d). As an indispensable part of the safety-related control system of AGV/AMR/unmanned forklift, the safety relay plays a monitoring role in many safety functions such as emergency stop and speed control, and the product itself also needs to achieve the corresponding high safety level.

As a pioneer of safety instruments and safety modules, Chenzhu has a deep accumulation in the design and development of safety control modules. During this project cooperation, the SGS functional safety team and the project team of Chenzhu worked closely together, from the requirements and concepts, product software and hardware design, to software and hardware testing and product functional testing, environmental reliability testing, fault injection testing and other links have in-depth technical exchanges. Pass comprehensive security assessment testing and review relevant technical documentation. After review, this product through three different types of safety signal inputs (digital input, proximity switch input and motor encoder input), output including relay and MOS two different types of output mode, the product from the input - logic - output all use redundant mode to achieve, and finally confirmed that Chenzhu's CZSR8501 series safety relay The entire safety circuit is designed in strict accordance with the ISO13849-1 Cat.3 PLe requirements, and issued a functional safety certificate. In the future, SGS will rely on the advantages of global network and localized services to provide Chenzhu with professional and efficient one-stop product testing and certification solutions, helping it enhance its competitiveness and smoothly enter the target market.

As an internationally recognized third-party testing and certification body, SGS vigorously promotes functional safety technologies in the fields of energy storage systems, rail transit, industrial automation, road vehicles, consumer electronics, process industries, nuclear power, medical and other fields, and is committed to improving the safety of chips, operating systems and components worldwide. With professional and efficient one-stop solutions, SGS helps enterprises improve the construction of safety systems and product quality and safety, effectively reduce the occurrence of hazardous accidents, and promote the sustainable development of enterprises.

Source: SGS CSTC Standards Technical Services Ltd