418 Appendix: Safe torque off (STO)
The Safe torque off function of the drive complies with these standards:
The Safe torque off function also corresponds to Prevention of unexpected start-up
as specified by EN 1037:1995 + A1:2008 and Uncontrolled stop (stop category 0) as
specified in EN 60204-1:2006 + AC:2010.
Compliance with the European Machinery Directive
See section Compliance with the Machinery Directive on page 394.
Standard Name
EN 60204-1:2005 +
A1:2008
Safety of machinery – Electrical equipment of machines – Part 1:
General requirements
IEC 61326-3-1:2008 Electrical equipment for measurement, control and laboratory use –
EMC requirements – Part 3-1: Immunity requirements for safety-
related systems and for equipment intended to perform safety-
related functions (functional safety) – General industrial
applications
IEC 61508-1:2010 Functional safety of electrical/electronic/programmable electronic
safety-related systems – Part 1: General requirements
IEC 61508-2:2010 Functional safety of electrical/electronic/programmable electronic
safety-related systems – Part 2: Requirements for
electrical/electronic/programmable electronic safety-related
systems
IEC 61511:2003 Functional safety – Safety instrumented systems for the process
industry sector
IEC/EN 61800-5-2:2007 Adjustable speed electrical power drive systems –
Part 5-2: Safety requirements – Functional
IEC/EN 62061:2005 +
A1:2013
Safety of machinery – Functional safety of safety-related electrical,
electronic and programmable electronic control systems
EN ISO 13849-1:2008 +
AC:2009
Safety of machinery – Safety-related parts of control systems –
Part 1: General principles for design
EN ISO 13849-2:2012 Safety of machinery – Safety-related parts of control systems – Part
2: Validation
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