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Functional safety components
The mission time of functional safety components is 20 years which equals the time
during which failure rates of electronic components remain constant. This applies to the
components of the standard Safe torque off circuit as well as any modules, relays and,
typically, any other components that are part of functional safety circuits.
The expiry of mission time terminates the certification and SIL/PL classification of the
safety function. The following options exist:
• Renewal of the whole drive and all optional functional safety module(s) and
components.
• Renewal of the components in the safety function circuit. In practice, this is
economical only with larger drives that have replaceable circuit boards and other
components such as relays.
Note that some of the components may already have been renewed earlier, restarting
their mission time. The remaining mission time of the whole circuit is however determined
by its oldest component.
Contact your local ABB service representative for more information.
Maintenance 159
Summary of Contents for ACS880-11
Page 1: ... ABB INDUSTRIAL DRIVES ACS880 11 drives Hardware manual ...
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Page 95: ...R6 R8 IP21 R6 R8 IP55 Electrical installation IEC 95 ...
Page 103: ...R6 1 5 N m 0 5 N m Electrical installation IEC 103 ...
Page 104: ...R8 1 5 N m 0 5 0 6 N m 104 Electrical installation IEC ...
Page 116: ...R6 R8 UL Type 1 R6 R8 UL Type 12 116 Electrical installation North America NEC ...
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Page 154: ... Fan arrow must point up 154 Maintenance ...
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Page 181: ... Package dimensions R6 R3 R8 Technical data 181 ...
Page 202: ...R3 IP21 UL Type 1 3AXD50000045323 202 Dimension drawings ...
Page 203: ...R3 Option B056 IP55 UL Type 12 3AXD50000045322 Dimension drawings 203 ...
Page 204: ...R6 IP21 UL Type 1 3AXD50000045353 204 Dimension drawings ...
Page 205: ...R6 Option B056 IP55 UL Type 12 3AXD50000045352 Dimension drawings 205 ...
Page 206: ...R8 IP21 UL Type 1 3AXD50000047667 206 Dimension drawings ...
Page 207: ...R8 Option B056 IP55 UL Type 12 3AXD50000047667 Dimension drawings 207 ...
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Page 225: ... Declarations of conformity The Safe torque off function 225 ...