Robot Safety Performance Testing: Standards, Methods, and Certification Requirements

Robot safety performance testing verifies that industrial robots, collaborative robots, mobile robots, and service robots meet the safety requirements of international standards such as ISO 10218, ISO/TS 15066, and IEC 60204-1 before they are placed on the market. This article explains the scope of robot safety testing, the types of samples tested, key testing items, laboratory methods, typical applications, and answers to frequently asked questions for manufacturers and integrators.

Technical Overview

Robot safety performance testing is a systematic evaluation process that verifies whether a robot, its controller, and its integrated safety functions satisfy the requirements of applicable international, regional, and national safety standards. The objective is to protect operators, maintenance personnel, and bystanders from hazards such as crushing, impact, entanglement, electrical shock, thermal injury, and unexpected motion during robot operation.

Testing is typically performed by accredited third-party laboratories at the design stage (type testing), during system integration, and prior to market placement. The results support regulatory compliance, product certification, and documented risk reduction in accordance with ISO 12100. The principal standards framework includes:

• ISO 10218-1 and ISO 10218-2 — safety requirements for industrial robots and for robot systems and integration (2025 revision), adopted in Europe as EN ISO 10218 and in China as the GB 11291 series.
• ISO/TS 15066 — collaborative robot operation, power and force limiting, and biomechanical limit values.
• ISO 12100 — risk assessment and risk reduction methodology for machinery.
• ISO 13849-1 and IEC 62061 — functional safety of safety-related control systems (Performance Level and SIL).
• IEC 60204-1 — electrical safety of machinery, including robot controllers.
• ISO 3691-4 and ANSI/ITSDF B56.5 — driverless industrial trucks, AGVs, and mobile robots.
• ISO 13482 — personal care robots, and UL 3300 for consumer service robots.
• IEC 60335 series for household robots (for example robotic floor cleaners and robotic lawnmowers) and IEC 62115 and EN 71 for robot toys.
• EMC standards: CISPR 11 and CISPR 32 for emissions, and the IEC 61000-4 series for immunity.

Testing Samples

Industrial Robot Manipulators, Controllers, and Teach Pendants

Six-axis articulated arms, SCARA, delta (parallel), and Cartesian robots are submitted together with their controllers, servo drives, safety-rated encoders, holding brakes, and teach pendants. Because safety functions span the entire electromechanical chain, the complete functional unit is tested rather than isolated components.

Collaborative Robots

Cobots designed for power and force limiting, speed and separation monitoring, hand guiding, or safety-rated monitored stop are tested with their intended end-effectors and representative workpieces, since contact forces depend strongly on tooling mass, geometry, and application dynamics.

Mobile Robots — AGVs and AMRs

Automated guided vehicles, autonomous mobile robots, and driverless industrial trucks are evaluated together with their navigation sensors, safety laser scanners, warning devices, and docking or charging stations to verify safe interaction with pedestrians and other traffic.

Service, Personal Care, and Consumer Robots

Floor-cleaning robots, robotic lawnmowers, delivery robots, telepresence robots, humanoid robots, and educational robot kits, including their power adapters, chargers, and battery packs, are covered under household appliance, service robot, and toy safety standards as applicable.

Safety Components and End-Effectors

Grippers, tool changers, collision sensors, safety-rated soft axis and space limiters, and external protective devices are assessed as safety-related parts of control systems contributing to the overall safety function of the robot.

Testing Items

Depending on the robot type and target market, a typical test program combines the following groups of items:

• Functional safety verification: emergency stop, protective stop functions (SS1, SS2), safe operating stop, safe speed and position monitoring, axis and workspace limiting, and hand guiding; determination of Performance Level per ISO 13849-1 or SIL per IEC 62061, including Category and MTTFd verification.
• Collaborative safety testing: measurement of quasi-static and transient contact forces and pressures against the biomechanical limits defined in ISO/TS 15066, and validation of speed and separation monitoring distances and system reaction times.
• Electrical safety: dielectric strength (hipot), insulation resistance, protective bonding continuity, leakage and touch current, residual voltage discharge, temperature rise, and accessible surface temperature per IEC 60204-1 or IEC 60335-1 as applicable.
• Electromagnetic compatibility: radiated and conducted emissions per CISPR 11 or CISPR 32; immunity to electrostatic discharge (IEC 61000-4-2), radiated RF fields (IEC 61000-4-3), electrical fast transients (IEC 61000-4-4), surge (IEC 61000-4-5), conducted RF disturbances (IEC 61000-4-6), and power-frequency magnetic fields (IEC 61000-4-8).
• Mechanical and physical hazards: stability, footprint and reach verification, sharp edges and moving parts evaluation, safeguarding effectiveness, and drop and impact resistance for mobile and consumer robots.
• Environmental and reliability testing: dry heat, damp heat, and cold tests per the IEC 60068-2 series, vibration and shock, ingress protection (IP rating per IEC 60529), brake holding performance, and endurance cycling.
• Performance verification: pose repeatability, path accuracy, and velocity accuracy per ISO 9283 as complementary evidence of predictable motion behavior.
• Noise measurement: sound power level determination per ISO 3744 and ISO 4871.
• Battery and charging safety for mobile and consumer robots: cells and battery packs per IEC 62133 and transport classification per UN 38.3.
• Cybersecurity assessment for connected robots, aligned with the IEC 62443 series where required.

Testing Methods

Every test program begins with a risk assessment per ISO 12100, from which a verification and validation matrix is derived. This matrix links each identified hazard to a specific test, calculation, or inspection method, ensuring traceable evidence of risk reduction.

• Laboratory type testing: electrical safety tests per IEC 60204-1 using calibrated hipot, insulation, and earth-bond instruments, and EMC testing in semi-anechoic chambers and shielded test cells.
• Instrumented force and pressure measurement: calibrated pressure-mapping sensors and force gauges mounted on standardized fixtures representing human body regions, comparing measured contact values with ISO/TS 15066 thresholds.
• Functional safety assessment: fault injection (open circuits, short circuits, stuck signals), analytical verification of PL or SIL, review of safety function specifications, and stop-time measurement to validate minimum safety distances.
• Motion and stop performance measurement: emergency stop and protective stop response times, overrun distances, and braking behavior under rated payload and maximum speed conditions.
• Environmental conditioning: climate chambers and electrodynamic shakers per IEC 60068-2, followed by post-exposure functional and electrical retesting to confirm durability.
• Integration and on-site validation: verification of the complete robot cell per ISO 10218-2, including safeguarding, interlocks, and safe interaction with peripheral equipment.
• Documentation review: examination of the technical file, instructions for use, marking and labeling, and compilation of conformity documentation.

Upon successful completion, accredited third-party laboratories issue test reports that support conformity assessment and certification, such as CE marking under the EU Machinery Regulation (EU) 2023/1230, UKCA marking, or North American listing schemes.

Applications

Robot safety performance testing is applied throughout the robot life cycle and across virtually every industry that deploys robotic automation:

• Manufacturing: automotive welding and assembly lines, electronics pick-and-place, machine tending, machining, and palletizing cells.
• Human-robot collaboration: shared workstations where operators and collaborative robots perform tasks without physical guarding.
• Logistics and warehousing: AGV and AMR fleets operating alongside pedestrians and forklifts, including automated charging and docking areas.
• Healthcare, laboratory, and pharmaceutical automation requiring validated safe operation near personnel.
• Consumer and public environments: household cleaning robots, lawnmowers, hotel and restaurant delivery robots, and educational robots used in schools.
• Market access and procurement: support for CE, UKCA, and North American certification, fulfillment of buyer and insurer requirements, and risk management for research institutions.

FAQ

What is the difference between ISO 10218-1 and ISO 10218-2?

ISO 10218-1 addresses the robot itself, including the design and protective measures of the manipulator and controller. ISO 10218-2 addresses robot systems and integration, covering cell layout, safeguarding, interfaces, and validation of the installed application.

Are collaborative robots exempt from safety testing?

No. Collaborative robots must still comply with ISO 10218-1 and must demonstrate that collaborative operating modes, such as power and force limiting or speed and separation monitoring, remain within validated safety limits, typically verified in accordance with ISO/TS 15066.

Is third-party testing legally mandatory?

Requirements vary by market. In many jurisdictions, manufacturers may self-declare conformity for robots, but test reports from accredited third-party laboratories are widely demanded by customers, insurers, and certification bodies, and they are essential for credible, defensible risk management.

How long does a typical test program take?

Duration depends on robot complexity and scope. Basic electrical safety and EMC screening may take one to two weeks, while a full functional safety assessment combined with collaborative force and pressure testing can extend to four to eight weeks.

What changed in the 2025 revision of ISO 10218?

The 2025 edition consolidates collaborative robot requirements into the main standard, strengthens functional safety expectations, and clarifies cybersecurity and validation requirements. Manufacturers whose products were originally evaluated against the 2011 edition should reassess them against the updated requirements.