Terms And Abbreviations - ABB ACS880-07 User Manual

14 Introduction to the manual

Terms and abbreviations

Term
Cat.
CCF
DC
E-stop
Frame, frame size
FSE-31
FSO-12, FSO-21
HFT
IGBT
modoff
NC
PFD
avg
PFH
PL
POUS
SAR
SC
SIL
SILCL
SS1
SSE
STO
T
1
TP
Zero speed
Description
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. (EN ISO 13849-1)
Common cause failure (%) (EN ISO 13849-1)
Diagnostic coverage (EN ISO 13849-1)
Emergency stop
Physical size of the drive or power module
Optional pulse encoder interface module for safety encoder
Optional functional safety modules
Hardware fault tolerance (IEC 61508)
Insulated gate bipolar transistor
No modulation
Normally closed
Average probability of dangerous failure on demand (IEC 61508)
Average frequency of dangerous failures per hour (IEC 61508)
Performance level. Levels a...e correspond to SIL (EN ISO 13849-1)
Prevention of unexpected start-up
Safe acceleration range
Systematic capability (IEC 61508)
Safety integrity level (1...3) (IEC 61508)
Maximum SIL (level 1...3) that can be claimed for a safety function or subsystem
(IEC/EN 62061)
Safe stop 1 (IEC/EN 61800-5-2)
Safe stop emergency
Safe torque off (IEC/EN 61800-5-2)
Proof test interval. Defines the probabilistic failure rate (PFH or PFD
function or subsystem. Performing a proof test at a maximum interval of T
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
as a guarantee or warranty.
Test pulse
For safety functions, the zero speed limit indicates the completion of the safe stopping
function.
) for the safety
avg
1
values given cannot be regarded
1
is required