Abbreviations; Exclusion Of Liability - ABB ACS880-07 User Manual

Abbreviations

Abbreviations used in this manual are listed below.
Abbreviation Description
Cat. Category. 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 Common cause failure (%)
D8T Frame size designation of the diode supply module
DC Diagnostic coverage
FIT Failure in time: 1E-9 hours
Frame (size) Relates to the construction type of the drive in question. For example,
several drive types with different power ratings can have the same
basic construction, and a frame size is used in reference to all those
drive types.
With the ACS880-07/17/37 (smaller), the frame size marking of the
drive indicates the physical size of the drive, eg, R6.
With the ACS880-07 (larger), the frame size marking of the drive
indicates the quantity and frame size of the diode supply modules
plus the quantity and frame size of the inverter modules, eg,
"2×D8T +3×R8i".
With the ACS880-17 and ACS880-37 (larger), the frame size marking
of the drive indicates the quantity and frame size of the IGBT supply
modules plus the quantity and frame size of the inverter modules, eg,
"2×R8i +3×R8i".
HFT Hardware fault tolerance
IGBT Insulated gate bipolar transistor
PFD Average probability of dangerous failure on demand
avg
PFH Average frequency of dangerous failures per hour
PL Performance level (levels are: a, b, c, d and e). Corresponds to SIL.
POUS Prevention of unexpected start-up
R6...R11, R8i Frame size designation of the drive, inverter or IGBT supply module
SC Systematic capability
SIL Safety integrity level
SILCL Maximum SIL that can be claimed for a safety function or subsystem EN/IEC 62061
STO Safe torque off
T1 Proof test interval or lifetime (the smaller one)

Exclusion of liability

ABB is not responsible for the implementation, verification and validation of the overall
safety system. It is the responsibility of the system integrator (or other party) who is
responsible for the overall system and system safety.
Introduction to the manual 9
Reference
EN ISO 13849-1
EN ISO 13849-1
EN ISO 13849-1
IEC 61508,
EN/IEC 62061,
EN/IEC 61800-5-2
IEC 61508,
EN/IEC 62061
IEC 61508
IEC 61508
EN ISO 13849-1
EN 1037
IEC 61508:2010
IEC 61508,
IEC 61511,
EN/IEC 62061,
EN/IEC 61800-5-2
EN/IEC 61800-5-2
IEC 61508,
EN/IEC 62061