The application of AGVs needs to be not only more intelligent but also safer. When humans and machines share a workspace, safety is the primary consideration. The ISO 3691-4 standard, released in 2020, not only defines the safety requirements for AGVs and specifies how to verify their automation functions, but also provides the performance levels required for AGV vehicle monitoring functions, various operating modes, and braking control. Therefore, it is crucial for both AGV manufacturers and end-users.
The main focus of ISO 3691-4 is on correctly defining the areas where AGVs are used. For example, when using AGVs in production workshops or warehousing logistics, warning areas and safe areas need to be defined accordingly, which necessitates speed limits for the AGVs. Any residual risks in the application must also be addressed through appropriate warning messages and user training.
1. ISO 3691-4 is a normative framework.
ISO 3691-4, "Automated Guided Vehicles (AGVs) and Systems Thereof," is a normative framework that strengthens the requirements for AGV safety functions and the verification of vehicle automation capabilities. This standard uses the methods defined in EN ISO 13849 to determine the performance level requirements for various vehicle monitoring functions, operating modes, and braking controls. For operators of intralogistics applications, the primary task is to ensure that the specific application complies with ISO 3691-4 while achieving the highest possible productivity. As a supplier of safety automation solutions, Pilz has always focused on the intralogistics industry, accumulating extensive experience in industry applications. Our safety experts can support users in complying with international regulations (such as CE certification) and take responsibility for the safety of AGV applications.
2. Three steps to achieve "packaged" security
Pilz offers a range of "packaged" services to AGV manufacturers and operators, including consulting services on safe AGV operation and on-site compliance verification of AGVs at the manufacturer's and/or operator's locations. Training can also be provided upon request.
● The first step is the risk assessment phase, where Pilz's safety experts can provide support and conduct factory acceptance testing of the AGVs at the manufacturer's site if necessary. At the user's site, Pilz will also conduct a final risk assessment of the AGV system based on the actual application environment.
● The next step is the safety verification phase at the end-user site, which focuses on the installation and integration of safety components suitable for AGVs, such as scanners or encoders, the planning and activation of safety zones, and the protection of the AGV application environment. Pilz can provide support from the addition of safety devices to service consultation and even the declaration of conformity for the entire application.
● Finally, Pilz helps users check that their entire application complies with the official requirements of relevant local regulations, such as CE certification in Europe and OSHA in the United States. Before the initial commissioning of the AGV, its proper status and safety functions must be checked, and this should be done at least annually thereafter. Pilz can incorporate this into its overall solution and be responsible for its implementation.
Based on a correct understanding of the application and specification framework, and combined with appropriate technologies, AGV application safety can be achieved. This comprehensive overall solution can perfectly coordinate the safety and production efficiency of AGV applications.
