Guidebook for Designing Emergency Stop Equipment
When emergency stop devices are installed on detachable or cableless operator control stations (e.g. pluggable portable teaching pendants), at least one emergency stop device shall be
The safety related parts of the control system or subsystems which perform the emergency stop function shall comply with the relevant requirements of ISO 13849-1 and/or IEC 62061.
The emergency stop device shall be designed to avoid unintended actuation. So far as practicable, unintended actuation shall be prevented by location rather than the use of other application design measures. The actuation of the emergency stop device shall not be impaired.
ISO 13850 was revised in October 2015, and the revision has a major impact on the design of emergency stop equipment. This guidebook explains the matters that have a significant impact, and shows the guide for designing the equipment. emergency situations arising from the behaviour of persons, or from an unexpected hazardous event. hesitation.
In principle, when actuating an emergency stop device, the entire machine should be stopped. However, as an exception, this revision has introduced a new concept of the "Span of control" to partially stop the machine as shown below. The span of control of each emergency stop device shall cover the whole machine.
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