X20SLX910

Place the affected machine in its approved maintenance state. Identify every protective device whose input reaches this module and ensure that removing an input cannot cause an unexpected restart or defeat a required protective function.

Verify the 24 V DC I/O supply against the -15%/+20% range and review the common reference arrangement. Investigate unstable supply voltage before assessing individual input channels or attempting to validate the safety response.

Account for all loads attached to each test-pulse output. Keep each channel within 50 mA and the four-output total within 200 mA, and use only input arrangements supported by the safety design.

Test each connected guard or protective-device state through the approved validation procedure. Check the safety application's interpretation and the resulting output response, including detection of wiring faults required by the design.

Record the final application identity, filter settings and completed protective-function tests. Return the machine to operation only after the responsible safety process accepts the complete sensor-to-actuator behavior.

Confirm that the intended openSAFETY participants return with the correct identities. Resolve missing nodes and inconsistent configuration before permitting production operation; a healthy bus indication alone is not a functional safety validation.