Compliance With The European Machinery Directive; Wiring; Activation Switch; Cable Types And Lengths - ABB ACS580-04 Hardware Manual

136 Safe torque off function
Standard
IEC 61508-1:2010
IEC 61508-2:2010
IEC 61511:2003
IEC/EN 61800-5-2:2007
EN 62061:2005 + A1:2013
IEC 62061:2005 + A1:2012
EN ISO 13849-1:2008 +
AC:2009
EN ISO 13849-2:2012
The 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 European Machinery Directive

Wiring

The following diagrams present examples of Safe torque off wiring for
•
a single drive (page 137)
•
multiple drives (page 140)
•
multiple drives when an external 24 V DC power supply is used (page 141).
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]).

Activation switch


In the wiring diagrams below, the activation switch has the designation [K]. This represents
a component such as a manually operated switch, an emergency stop push button switch,
or the contacts of a safety relay or safety PLC.
•
If a manually operated activation switch is used, the switch must be of a type that can
be locked out to the open position.
•
The contacts of the switch or relay must open/close within 200 ms of each other.
•
An CPTC-02 option module can be used. For more information, see.section
ATEX-certified thermistor protection module, (external 24 V AC/DC and isolated PTC
interface) on page 168.

Cable types and lengths


We recommend double-shielded twisted-pair cable (see page 58).
Name
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 82.
on page 122.
Default I/O connection
CPTC-02