Safe motion monitoring

In accordance with the Machinery Directive, when the drive is brought to a standstill, the operating status must be safely monitored and maintained. The motion monitoring safety functions - whether external or drive-integrated - must also be guaranteed. The term “safe” is understood in terms of functional safety from the relevant machinery safety standards EN 61508 and EN ISO 13849-1.

Safe motion monitoring can be implemented through speed monitoring and is used to protect operating and maintenance employees. As a result, potentially hazardous movements are safely detected and appropriate countermeasures can be initiated in time.

• Safe working practices with the safety gate open
• Reduced setup times as there is a better insight into the setup area
• Greater work safety due to safely limited setup speed
• Faster access to the machine once standstill is initiated
• Protection of the plant against mechanical damage

• The safety relay PNOZ s30 is a stand-alone device that provides a self-contained solution for rotation speed monitoring
• Configurable small control systems PNOZmulti provide a particularly flexible solution due to their numerous communication interfaces and extension modules
• The drive-integrated safe motion solution provides you with very fast response times and low wiring effort
• The automation system PSS 4000 provides you with a freely programmable control system and facilitates solutions for individual requirements

• Increased productivity thanks to safe speed range on transfer processes for dovetailed interlocking processes; for example buffer zones on conveyors and to avoid damage from excessive process speed.
• Hygienic filling thanks to safe direction on filling and production processes which may only move forwards; for example filling processes in the food industry, where a reverse motion could result in contamination.
• Increased safety thanks to safe operating stop; for example by preventing suspended loads from sagging or falling and by travelling with the safety gate open in operating mode II on machine tools, as well as avoiding material "pushing forward" once the machine has come to a standstill.
• Safe setup thanks to standstill monitoring when safety gate is released and on processes on smaller machines, such as applying labels, heat, logo stamping, filling up materials.
• Combination of safe speed and safe standstill monitoring; for example in woodworking machining centres. Various speeds are needed, as there are a number of different tools and materials to be machined.