Start with the actuator’s job, then check its safety requirements

A valve actuator turns an electrical command into movement. That movement may come from a motor and transmission or from a solenoid’s magnetic force. Selecting the right product requires more than matching its voltage and output torque: stalled operation, heating, accessible parts and permitted operating conditions also matter.

IEC 61010-2-202:2020 addresses the particular safety requirements and associated verification tests for electrically operated valve actuators and solenoids used in industrial-process or discrete-control environments. It is a product safety standard, not a general specification for every device that produces movement.

The scope has clear boundaries

The standard excludes actuators and solenoids for domestic or commercial applications, devices performing a safety function, and positioners. The mechanical parts and mechanical aspects of the valve are also outside its scope. A claim against this standard therefore does not establish the valve’s pressure rating or leak-tightness.

This boundary is particularly important for emergency shutdown applications. Protection against equipment hazards and reliable execution of a safety function are different assessments. Related topics include IEC 61508 functional safety and Safety Integrity Levels. An IEC 61010-2-202 reference is not a SIL claim.

Part 1 supplies the foundation

Part 2-202 is used with IEC 61010-1:2010 and Amendment 1:2016. It adds to or modifies the relevant general requirements rather than replacing the entire safety framework. The related directory entry is IEC 61010-1 general safety requirements.

A controller and the actuator it commands can have different product-standard scopes. IEC 61010-2-201 concerns control equipment. Evidence for the controller does not automatically establish compliance of the connected actuator.

What happens when power is present but movement stops?

A jammed mechanism creates a useful distinction: energized does not mean moving correctly. The particular solenoid test considers a fully energized device with movement prevented, using the less favourable condition. This is a controlled verification test, not an instruction to jam a valve during maintenance.

For a motor-operated valve, travel feedback and the manufacturer’s protection arrangements deserve separate attention. A limit switch can report that a defined position has been reached. A close command, however, is not the same signal as closed-position confirmation. Keeping those signals distinct makes incomplete movement easier to detect.

Read the operating data as a set

For equipment designed for intermittent operation, its duty cycle matters. Instructions concerning surface temperature also form part of the operating information. A control system that keeps issuing commands cannot make an intermittently rated actuator suitable for continuous operation. Follow the manufacturer’s stated operating and cooling conditions.

An IP rating or data interface answers a different question

IP protection ratings and IEC 60529 address enclosure ingress protection. A high IP rating does not establish every electrical safety requirement or a functional safety capability.

Electromagnetic compatibility also needs its own applicable product scope; a related topic is IEC 61326-1. Likewise, IO-Link sensor and actuator communication concerns data exchange. The presence of a communication interface is not, by itself, evidence of a safety function.

Check the evidence against the exact product

Compliance evidence should identify the model, variant, supply option and operating conditions. IEC lists the 2020 publication as Edition 2.0. The IECEE 61010-2-202B:2022 report form applies to this edition together with IEC 61010-1:2010 and its 2016 amendment. A blank test report form is not certification of a particular actuator.

References and sources

IEC 61010-2-202:2020 — Particular requirements for electrically operated valve actuators

IEC 61010-1:2010+A1:2016 — General safety requirements

IECEE TRF 61010-2-202B:2022 — Test report form

IEC 61010-2-202:2020 — Distributor-hosted preview of the IEC publication