JVL MIS17 Series User Manual page 59

3.1
Example of the physical label on the motor where the S8 is identified and marked with a
red circle:
3.1.3 Abbreviations
Abbreviation Reference
Cat.
DC
FIT
HFT
MTTFd
PFH
PFD
PL
SIL
STO
SRECS
SRP/CS
PDS/SR
JVL Industri Elektronik A/S - User Manual - Integrated Stepper Motors MIS17x, 23x, 34x, 43x
STO - Safe Torque Off
TT2559-01GB
Description
ISO13849-1 Category, level "1-4"
- Diagnostic coverage
- Failure in time: 1E-9/hour
IEC61508 Hardware fault tolerance: HFT = n means that n+1 faults cause a loss of
the safety function.
ISO13849-1 Mean time to failure – dangerous. Unit: Years
IEC61508 Probability of dangerous failures per hour. Consider this value if the
safety device is operated in high demand or continuous mode of
operation, where the frequency of demands for operation made on a
safety-related system is greater than once per year.
IEC61508 Average probability of failure on demand, value used for low demand
operation.
ISO13849-1 Performance level, used to specify the ability of safety-related parts of
control systems to perform a safety function under foreseeable conditions.
Levels a–e.
IEC61508 Safety integrity level
IEC62061
IEC61800-5-2 Safe Torque Off
IEC62061 Safety related electrical control system
ISO13849-1 Safety related parts of control systems
IEC61800-5-2 Power drive system (safety related)
Option
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