Robot type inspection is a comprehensive conformity assessment that verifies whether a robot design meets the full requirements of applicable safety, performance, EMC, and environmental standards before market entry. This technical guide explains the testing scope, sample requirements, test items, methods, and certification applications for industrial robots, collaborative robots, and service robots, based on standards such as ISO 10218-1, ISO 13482, ISO 9283, and the IEC 61000 series.
Technical Overview
Robot type inspection (also referred to as robot type testing) is a full-scope evaluation of a representative sample of a robot product against every applicable clause of the relevant safety, performance, electromagnetic compatibility (EMC), and environmental standards. It is normally conducted once per product type or product family by accredited third-party laboratories, and the resulting type test report serves as the primary technical evidence for design conformity, market access, procurement qualification, and subsequent factory production inspection.
Unlike routine factory inspection, which verifies only a simplified subset of parameters on every manufactured unit, type inspection validates the design itself. Any major change to the mechanical structure, control system, safety functions, or rated load typically requires supplementary or renewed type testing. The applicable framework depends on the robot category, the target market, and the intended operating environment.
- ISO 10218-1 and ISO 10218-2 – Safety requirements for industrial robots and robot systems
- ISO/TS 15066 – Safety requirements for collaborative robot operation (power and force limiting, biomechanical limits)
- ISO 13482 – Safety requirements for personal care robots
- ISO 3691-4 – Safety requirements for driverless industrial trucks (AGV/AMR)
- ISO 9283 – Performance criteria and test methods for manipulating industrial robots
- IEC 61800-5-1 and IEC 60204-1 – Electrical safety of drive systems and machine electrical equipment
- ISO 13849-1 and IEC 62061 – Functional safety of safety-related control systems (PL and SIL)
- IEC 60335-1 and IEC 60335-2-2, together with IEC 62885 – Household electrical appliances, including robotic vacuum cleaners
- IEC 61000 series and CISPR 11 – Electromagnetic emissions and immunity
- IEC 60529 and IEC 60068-2 series – Ingress protection and environmental testing
- GB 11291.1, GB/T 12642, and GB/T 36530 – Chinese national adoptions corresponding to ISO 10218-1, ISO 9283, and ISO 13482
Testing Samples
Industrial Robots
Articulated six-axis robots, SCARA robots, delta (parallel) robots, Cartesian (gantry) robots, and welding or palletizing robots. Samples are tested at rated payload and rated voltage with the final production firmware, safety controller configuration, and teach pendant installed.
Collaborative Robots
Cobots intended for shared workspaces without full physical guarding. In addition to the standard safety configuration, samples must include the software boundaries, force-limiting settings, and any integrated torque or contact detection functions used in the collaborative operating modes.
Service and Mobile Robots
Professional cleaning robots, delivery robots, inspection and patrol robots, disinfection robots, automated guided vehicles (AGV), and autonomous mobile robots (AMR). These samples are submitted with their navigation sensors (LiDAR, cameras, ultrasonic arrays), docking stations, batteries, and load-carrying attachments.
Personal Care and Household Robots
Mobile servant robots, physical assistant robots, person-carrier robots, and consumer robot vacuum or floor-cleaning robots. These products are additionally evaluated under the household appliance safety framework because of their direct contact with untrained persons.
Sample Submission Requirements
- One to three complete robot units in series-production condition, depending on whether destructive tests are included in the scope
- Rated payload substitutes or test loads where specified by the standard
- Battery packs and chargers, including cells for separate battery safety testing (IEC 62133-2, UN 38.3 for transport)
- Complete technical documentation: risk assessment, circuit diagrams, declaration of Applied Parts of the safety control system, PL/SIL calculations, and instruction manuals
- Controller, teach pendant, safety-rated inputs, and any wireless communication modules
Testing Items
Electrical Safety Testing
- Protective bonding continuity and earthing effectiveness
- Insulation resistance measurement, typically at 500 V DC
- Dielectric strength (withstand voltage) tests at values determined by the working voltage
- Touch current and leakage current measurement
- Temperature rise of motors, windings, power electronics, and terminals under rated duty
- Verification of overload, short-circuit, and overvoltage protection
Mechanical Safety Testing
- Effectiveness of axis limiting devices and safety-rated soft axis and space limiting
- Speed limitation and speed monitoring accuracy
- Stopping performance: stopping time and stopping distance for stop category 0, 1, and 2
- Rated and limit load behavior, including overload response
- Braking performance and brake holding capability
- Stability and tipping resistance for mobile platforms on slopes
- Sharp edge, pinch point, and crush hazard verification
- Collision force and pressure measurement against biomechanical limits for collaborative operation
Functional Safety Verification
- Verification of the safety-related control system, typically Performance Level d with Category 3 architecture for robot safety functions
- Emergency stop function testing under motion and load conditions
- Validation of the four collaborative techniques: safety-rated monitored stop, hand guiding, speed and separation monitoring, and power and force limiting
- Fault injection testing on safety-critical signals to confirm diagnostic coverage and predictable failure behavior
- Software safety validation, including protective stop integrity after power interruption
Performance Testing
- Pose repeatability and pose accuracy per ISO 9283
- Distance accuracy and repeatability
- Path accuracy, path repeatability, and cornering deviation
- Velocity accuracy and velocity fluctuation
- Minimum positioning time over standard test cycles
- Static compliance and warm-up drift
- Cleaning performance and dust retention for household cleaning robots per the IEC 62885 series
EMC Testing
- Radiated and conducted emissions per CISPR 11, Class A or Class B depending on the environment of use
- Harmonic current emissions and voltage fluctuation/flicker
- Immunity to electrostatic discharge, radiated and conducted RF fields, electrical fast transients, surges, power-frequency magnetic fields, and voltage dips and interruptions per the IEC 61000-4 series
Environmental Adaptability Testing
- Ingress protection rating per IEC 60529, such as IP54 or IP67
- Dry heat, cold, and damp heat steady-state and cyclic tests per the IEC 60068-2 series
- Vibration and mechanical shock testing for transport and operation
- Salt spray corrosion testing for robots intended for outdoor or marine environments
- Extended endurance operation under rated load and duty cycle to assess reliability
- Noise emission measurement at the operator position per ISO 11201
Additional Items for Mobile Robots
- Personnel detection capability and protective field effectiveness per ISO 3691-4, verified at defined approach speeds and body detection standards
- Speed control and braking performance on rated gradients
- Battery safety, charging system safety, and transport classification of lithium cells
- Navigation and localization repeatability, docking accuracy, and obstacle negotiation
Testing Methods
Type inspection is performed under controlled reference conditions, typically 20 °C ambient temperature, power supply within 2% of rated voltage and frequency, and the robot configured with production firmware. Metrology-grade positioning tests per ISO 9283 use laser interferometers or laser trackers measuring a defined set of poses inside a standard test cube, with thirty repetitions at 100% and 50% of rated speed to statistically derive repeatability values.
Stopping performance is captured by triggering protective stops while high-resolution encoders or external displacement sensors record the trajectory from the stop command to standstill; the resulting stop time and stop distance data are used to calculate minimum safety distances for the final installation. Collaborative force and pressure verification applies calibrated force sensors and pressure-mapping devices to standardized body model regions, comparing quasi-static and transient contact against published biomechanical limits.
Electrical safety tests follow a defined sequence: earth continuity first, then insulation resistance, followed by temperature-rise measurements under cyclic load, with the potentially destructive dielectric strength test scheduled to protect preceding measurements. EMC tests are conducted in semi-anechoic chambers and shielded rooms. Functional safety verification combines analysis of the safety architecture with hardware fault injection, deliberately short-circuiting or interrupting safety-critical signals to confirm that the system always transitions to a safe state. Environmental tests are performed in climate and vibration chambers after baseline measurements, and end with a repeat of key electrical and functional checks to detect degradation.
Applications
Robot type inspection reports are used across the entire product lifecycle and for multiple market access pathways:
- Regulatory conformity for CE marking under the EU Machinery Directive (transitioning to the Machinery Regulation) and the EMC Directive, including the Radio Equipment Directive for robots with wireless modules
- North American certification through NRTL listing programs and evaluation against UL 3300 for service robots and ANSI/RIA R15.06 for industrial robot systems
- Voluntary or market-specific certification in China, Korea, Japan, and other jurisdictions that reference national adoptions of the ISO and IEC standards
- Government procurement, public tenders, and large industrial customer qualification, where third-party type test reports are frequently a mandatory bidding document
- Design validation milestones during product development and pre-production pilots
- Risk mitigation for product liability and insurance purposes, demonstrating state-of-the-art compliance
- Baseline technical reference for subsequent annual supervision and factory consistency inspections during serial production
FAQ
What is the difference between type inspection and routine inspection?
Type inspection is a one-time, full-standard evaluation performed on representative samples by accredited third-party laboratories to prove the conformity of the design. Routine inspection is a simplified set of checks, such as earth continuity, insulation resistance, and functional verification, carried out on every unit during manufacturing to confirm consistency with the type-approved design.
Which standards apply to my robot?
The framework depends on the robot category. Industrial robots follow ISO 10218-1 with functional safety per ISO 13849-1; collaborative applications add ISO/TS 15066; personal care robots follow ISO 13482; mobile industrial robots follow ISO 3691-4; household cleaning robots additionally follow the IEC 60335 and IEC 62885 series. Target markets may require national adoptions such as the corresponding GB standards in China.
How many samples are required?
Most programs require one to three complete units. Non-destructive electrical, EMC, and performance tests can usually share a single unit, while destructive tests such as dielectric strength, abnormal condition testing, or battery abuse tests typically require dedicated samples or component specimens.
How long does robot type inspection take?
A typical full-scope program, including safety, performance, EMC, and environmental testing, takes approximately six to twelve weeks, depending on the number of test items, sample availability, completeness of the technical file, and whether any items fail and require rectification and retesting.
Is type inspection mandatory?
It depends on the market and product category. In the European Union, the manufacturer must hold technical evidence supporting the Declaration of Conformity, and accredited third-party reports are the accepted form of proof. Many public tenders and industrial customers worldwide explicitly require type test reports regardless of whether local law mandates them.
How long is a type test report valid?
A report remains valid as long as the certified design is unchanged. In certification schemes it is typically maintained through annual supervision, with full recertification or delta testing every three to four years, and immediate supplementary testing whenever significant design, safety, or standard revisions occur.
What happens if the sample fails a test item?
The laboratory issues a non-conformity description. The manufacturer implements design or software corrections, documents the change, and the affected items are retested. Items already passed are usually not repeated unless the modification affects them, keeping cost and schedule impact proportionate.
