152 Safe torque off function
Abbreviations
Declaration of conformity
Declaration of conformity is available on the Internet. Refer to the inner back cover.
Abbr.
Reference
Description
Cat.
EN ISO 13849-1
Classification of the safety-related parts of a control system
in respect of their resistance to faults and their subsequent
behavior in the fault condition, and which is achieved by the
structural arrangement of the parts, fault detection and/or by
their reliability. The categories are: B, 1, 2, 3 and 4.
CCF
EN ISO 13849-1
Common cause failure (%)
DC
EN ISO 13849-1
Diagnostic coverage
FIT
IEC 61508
Failure in time: 1E-9 hours
HFT
IEC 61508
Hardware fault tolerance
MTTF
D
EN ISO 13849-1
Mean time to dangerous failure: (Total number of life units) /
(Number of dangerous, undetected failures) during a
particular measurement interval under stated conditions
PFD
avg
IEC 61508
Average probability of dangerous failure on demand
PFH
IEC 61508
Average frequency of dangerous failure per hour
PL
EN ISO 13849-1
Performance level. Levels a…e correspond to SIL
SC
IEC 61508
Systematic capability
SFF
IEC 61508
Safe failure fraction (%)
SIL
IEC 61508
Safety integrity level (1…3)
SILCL
EN 62061
Maximum SIL (level 1…3) that can be claimed for a safety
function or subsystem
STO
IEC/EN 61800-5-2
Safe torque off
T
1
IEC 61508
Proof test interval. T
1
is a parameter used to define the
probabilistic failure rate (PFH or PFD) for the safety function
or subsystem. Performing a proof test at a maximum interval
of T
1
is required to keep the SIL capability valid. The same
interval must be followed to keep the PL capability
(EN ISO 13849) valid. Note that any T
1
values given cannot
be regarded as a guarantee or warranty.
See also section
(page
Summary of Contents for ACS380 Series
Page 1: ...ABB MACHINERY DRIVES ACS380 drives Hardware manual...
Page 4: ......
Page 12: ...12 Table of contents...
Page 20: ...20 Safety instructions...
Page 46: ...46 Mechanical installation...
Page 60: ...60 Planning the electrical installation...
Page 86: ...86 Maintenance...
Page 120: ...120 Technical data...
Page 122: ...122 Dimension drawings Frame R0 1 phase 230 V...
Page 123: ...Dimension drawings 123 Frame R0 400 V...
Page 124: ...124 Dimension drawings Frame R1 230 V...
Page 125: ...Dimension drawings 125 Frame R1 3 phase 230 V and 3 phase 400 V...
Page 126: ...126 Dimension drawings Frame R2 230 V...
Page 127: ...Dimension drawings 127 Frame R2 400 V...
Page 128: ...128 Dimension drawings Frame R3 400 V...
Page 129: ...Dimension drawings 129 Frame R4 400 V...
Page 130: ...130 Dimension drawings...
Page 138: ...138 Resistor braking...
Page 169: ...BTAC 02 pulse encoder interface module 169 Dimensions 3AXD50000031154 rev A...