Detecting
Safety gate switches, guard locking, light curtains, laser scanners and radar sensing establish whether a guard is closed, an area is clear or a person is inside a hazardous zone.
Machine Safety · Safe Automation · Access Control
PilzSafety relays, safety controllers, guarding and safe motion technologies in India
Primionics supports machine builders and end users in India specifying Pilz safety technology — from a single emergency-stop relay to a programmable safety system covering multiple zones, operating modes and safe-motion functions, with the documentation a validated safety function requires.
PNOZ Safety RelaysPNOZmultiPSS 4000PSEN SensorsSafe MotionPITreader
PilzTechnology overview
Pilz technologies for machine safety and safe automation
A safety function is a chain: something detects the hazardous condition, logic decides what to do, and the drive or actuator carries it out. Pilz supplies all three parts, which is what allows the achieved Performance Level to be calculated and evidenced for the function as a whole rather than component by component.
Evaluating
Safety relays handle a small fixed set of functions; PNOZmulti and PSS 4000 handle machines with several functions, zones and operating modes, and make the logic documentable and repeatable across a build.
Reacting
Safe motion monitoring keeps speed, standstill, direction or position within safe limits, so setup and observation can continue at a safely limited speed instead of requiring a full shutdown.
Technology portfolio
Core Pilz technologies supported through Primionics
Safety Relays
Single-function and multi-function safety relays for emergency stop, safety gate, light curtain and standstill monitoring where the number of safety functions is small and fixed.
Explore technologyConfigurable & Programmable Safety Controllers
PNOZmulti and PSS 4000 cover machines with multiple safety functions, zones and operating modes, replacing relay wiring with configured logic that can be reviewed and reused.
Explore technologySafety Gate & Access Protection
Coded safety switches, interlocks and guard-locking devices for movable guards, including manipulation protection and process guarding where a machine must not be opened mid-cycle.
Explore technologyLight Curtains & Area Protection
Optoelectronic protective devices, safety laser scanners and radar sensing for finger, hand, body and area detection, where the resolution and safety distance follow from the stopping time.
Explore technologySafe Motion & Drive Technology
Safe speed, standstill, direction and position monitoring so that setup, teaching and observation can be carried out at a safely limited speed rather than requiring the drive to be switched off.
Explore technologyIndustrial Access & Operator Safety
Authorisation, mode selection and access-permission systems that tie operating-mode safety to traceable operator identification instead of a key left in the panel.
Explore technologyApplications
Engineering workflows and application areas
New machine builds
Safety functions are specified from the risk assessment, implemented in sensing, logic and drive-side measures, and validated with the calculation and documentation an assessor expects.
Retrofit and modernisation
Older machines are assessed as currently used, gaps against applicable standards identified, and guarding, sensing and logic brought up to the required level without rebuilding the machine.
Production lines and cells
Multi-zone lines need selective stopping so that one cell can be entered while the rest keeps running — the point at which configurable safety systems replace discrete relays.
Setup and maintenance access
Safe motion together with authorisation and mode selection lets defined work continue under controlled conditions, with a record of who enabled which mode.
Selection criteria
Define the safety function before selecting the hardware
Hazard and risk
Identify each hazard, then the severity, exposure frequency and possibility of avoidance that set the required Performance Level or SIL for the function that addresses it.
Number of functions
Count the independent safety functions, zones and operating modes. This is the decision point between discrete safety relays and a configurable or programmable safety system.
Detection and distance
The stopping time of the machine and the approach speed determine the required safety distance, and the detection resolution needed for finger, hand or body protection.
Integration and evidence
Confirm the fieldbus or network the diagnostics report to, the enclosure and environment, and the calculation and validation records required for acceptance.
Technical FAQ
Common engineering and product-selection questions
When is a safety relay sufficient and when is a safety controller needed?
A safety relay suits a small, fixed number of independent safety functions. Once a machine has several functions, zones, operating modes or muting requirements, a configurable system such as PNOZmulti reduces wiring and makes the logic documentable and repeatable.
What determines the required Performance Level or SIL?
The required level follows from a risk assessment of each hazard, considering severity of injury, frequency of exposure and possibility of avoidance. The assessment produces a required Performance Level under ISO 13849-1 or a Safety Integrity Level under IEC 62061, which the implemented safety function must then achieve.
Can safe motion functions replace switching off the drive?
Safe speed, standstill and position monitoring allow defined operations such as setup and observation to continue at a safely limited speed instead of a full stop. Which functions are permissible depends on the risk assessment and the machine standard being applied.
Does Pilz technology fit an existing non-Pilz control system?
Safety functions are normally implemented independently of the standard control system and exchange status and diagnostic data with it. Pilz safety systems provide interfaces to common fieldbus and industrial Ethernet networks for that purpose.
What is involved in a machine-safety retrofit?
A retrofit starts from a risk assessment of the machine as it is currently used, identifies gaps against the applicable standards, and defines the safety functions and required levels. Guarding, sensing, logic and drive-side measures are then specified, implemented and validated with documentation.
What documentation is expected for a safety function?
Typically the risk assessment, the safety function specification with its required level, the calculated achieved level for the implemented architecture, circuit and configuration documentation, and validation records demonstrating that each function performs as specified.