Detect the demand
E-STOP, guard, light curtain, scanner or radar, motion feedback or access device.
safety technology
Machine Safety & Safe Automation
Safety technology for new machinery, production equipment and machine modernisation—from E-STOP and guard monitoring through non-contact personnel protection, configurable safety control, Safe Motion and authorised access.
Safety functions · Six technology areas
Safety function selection
Begin with the hazard and the machine function, not the product family. The risk assessment defines the required safety function and the risk reduction it must achieve; the architecture then follows from detection, safe evaluation and the stopping element. Each route below leads to the the applicable manufacturer product families, the engineering criteria that govern selection, and the retrofit considerations for existing machinery.
Safe evaluation
Safety Relays & Machine Monitoring
Hardwired or modular evaluation of a bounded safety function — E-STOP, guard, two-hand or standstill — selected by input count, reset strategy, safe-output architecture and device lifecycle.
- PNOZsigma
- PNOZcompact
- myPNOZ
- PNOZ X
Guard protection
Safety Gates & Access Protection
Interlocking, process guarding or personnel-protection guard locking, chosen from hazardous run-down time, manipulation protection, gate mechanics and the escape-release concept.
- PSENcode
- PSENmlock
- PSENslock 2
- PSENhinge
Non-contact protection
Light Curtains & Area Protection
Electro-sensitive protective equipment for a defined access plane or a configurable area field, sized from resolution, approach direction and the minimum distance to ISO 13855.
- PSENopt II
- PSENscan
- PSENradar
Safe control
Configurable Safety Controllers
Configurable or programmable safe logic, used once the number, interaction or distribution of safety functions exceeds what a clear relay architecture can carry.
- PNOZmulti 2
- PSS 4000
Motion safety
Safe Motion & Drive Technology
Safe stop, speed, direction, position and brake functions — STO, SS1, SLS, SOS or SDI — through stand-alone monitoring, configurable control or a verified drive-integrated route.
- PNOZ s30
- PNOZmulti 2 Motion
- PMCprotego
Operator interaction
Industrial Access & Operator Safety
Authentication, access permission and functionally safe operating-mode selection — kept distinct from the safety function itself and integrated through a verified controller architecture.
- PITreader
- PITgatebox
- PITmode
- PITestop
Note on device ratings. Performance Level to ISO 13849-1 or SIL to IEC 62061 applies to the complete safety-related control function — detection, evaluation, output and the machine response together. It is not a property of an individual device, and it cannot be inferred from a component rating alone.
Existing machinery
Machine Safety Retrofit & Modernisation
Modernise the safety architecture without unnecessarily redesigning the machine. Review current protective devices, safety logic, outputs, stopping behaviour and access requirements, then establish what may remain and what must change.
Existing machine and safety functionsLifecycle, hazard and stopping reviewRetain, replace or reconfigureModernised safety architecture
Core safety architecture
A safety function is a complete chain
Component capability does not establish the performance of the complete safety-related control function.
Evaluate the function
PNOZ relay, PNOZmulti 2 or PSS 4000 selected for the architecture.
Control the hazard
Contactor, drive STO, brake, safe valve or a supported safe drive function.
Reach the safe state
Defined stop or operating condition, including reset and restart behaviour.
Diagnostic/status path: a standard PLC or HMI may receive status for diagnostics. It does not become the safety evaluator unless it is part of a suitable certified safety architecture.
Common applications
Required machine response as the starting point
Emergency Stop Monitoring
Stop demand, evaluation, output switching, manual reset and restart prevention.
Machine Guard Door Safety
Interlocking or locking based on access, run-down time and guard mechanics.
Light Curtain Protection
Detection capability, safety distance, protective height, muting and reset.
Robot Cell & Area Protection
Gate access, full-body entry, presence detection, teach mode and robot boundary.
Safe Speed & Standstill
Controlled setup or access using supported feedback and motion functions.
Machine Safety Retrofit
Lifecycle, additional devices, changed functions and modernised diagnostics.
Engineering selection
Machine-safety architecture selection criteria
Hazard & safety functionDefine the hazardous event, initiating demand, required machine response and operating modes.
Required PL or SILEstablish required risk reduction for each safety function; do not assign a machine rating from one component.
Stopping behaviourUse measured or validated project data where required, especially for non-contact protection, guard locking and motion access.
Reset & restartReview manual, monitored or automatic reset and protection against unexpected restart.
Environment & lifecycleAccount for ingress, contamination, vibration, temperature, machinery life and verified product lifecycle.
Replacement enquiry
Have an existing safety part number?
Share the manufacturer, exact part number, application, supply, connected safety devices, available wiring information and a clear product photograph. A direct successor is proposed only where current manufacturer lifecycle information supports it; otherwise the safety function requires an architecture review.
Current device and exact part numberManufacturer lifecycle checkSupported successor or application-equivalent review