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140 Safe torque off function
Standard
IEC 61326-3-1:2017
IEC 61508-1:2010
IEC 61508-2:2010
IEC 61511:2016
EN 61800-5-2:2007
IEC 61800-5-2:2016
IEC 62061:2005 + A1:2012 +
A2:2015
EN 62061:2005 + AC:2010 +
A1:2013 + A2:2015
EN ISO 13849-1:2015
EN ISO 13849-2:2012
The function also corresponds to Prevention of unexpected start-up as specified by EN
ISO 14118:2018 (ISO 14118:2017) and Uncontrolled stop (stop category 0) as specified in
EN/IEC 60204-1.
Compliance with the European Machinery Directive
See section
Compliance with the European Machinery Directive
Electrical planning instructions for ACS880 multidrive cabinets and modules
(3AUA0000102324 [English]).
Wiring
The following diagrams present examples of Safe torque off wiring for
•
a single drive (page 141)
•
multiple drives (page 145)
•
multiple drives when an external 24 V DC power supply is used (page 146).
For information on the specifications of the STO input, see section
diagram (ABB standard macro)
For drives with option +L537, see CPTC-02 ATEX-certified thermistor protection module,
Ex II (2) GD (+L537+Q971) user's manual (3AXD50000030058 [English]).
Name
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
Functional safety of electrical/electronic/programmable electronic safety-
related systems – Part 1: General requirements
Functional safety of electrical/electronic/programmable electronic safety-
related systems – Part 2: Requirements for
electrical/electronic/programmable electronic safety-related systems
Functional safety – Safety instrumented systems for the process industry
sector
Adjustable speed electrical power drive systems –
Part 5-2: Safety requirements – Functional
Safety of machinery – Functional safety of safety-related electrical,
electronic and programmable electronic control systems
Safety of machinery – Safety-related parts of control systems – Part 1:
General principles for design
Safety of machinery – Safety-related parts of control systems – Part 2:
Validation
on page 84.
on page 124. See
Default I/O connection
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