8536IB1904EN-04

Stop Categories (EN/IEC 60204-1)

The stop category relates to the way the driven load is de-energized and depends on the external safety-related sub-system that triggers the Stop function. An external safety-related sub-system can be implemented with devices such as the Preventa™ XPS modules.

Stop Category 0

Stop Category 0 is defined as stopping the machine motion by immediate removal of electrical power from the machine actuators. Stop Category 0 is an uncontrolled stop.

Stop Category 1

Stop Category 1 is defined as stopping the machine motion with electrical power maintained to the machine actuators during the stop process. Power is removed when the stop is complete. Stop Category 1 is a controlled stop.

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