24 Introduction to the manual
SLS
Safely-limited speed
SMS
Safe maximum speed
SS1
Safe stop 1
SS1-r
Safe stop 1 ramp monitored
SS1-t
Safe stop 1 time controlled
SSE
Safe stop emergency
For example, safety fieldbus failure, speed monitoring trip limit hit (SLS
and SMS) will activate the SSE safety function.
SRECS
Safety related electrical control system (see page
).
Status word
16-bit word from device to controller with bit-coded status messages.
STO
Safe torque off (EN/IEC 61800-5-2). In this manual, this term is used in
two different contexts:
•
the STO circuit in the drive (the drive STO function)
•
the
STO safety function in the FSO module.
Safety functions in the FSO module (eg, STO, SSE, SS1 and POUS)
activate the drive STO function, that is, open the drive STO circuit. In
addition, some safety functions can activate the STO safety function in
the FSO module, which in turn opens the drive STO circuit. See section
Dependencies between safety functions
on page
.
Stop category
There are three categories of stop functions:
• stop category 0: an uncontrolled stop where power to the machine
actuators is removed immediately
• stop category 1: a controlled stop where the machine actuators have
power for stopping, after which the power is removed
• stop category 2: a controlled stop where the machine actuators
continue to have power.
Stop category 0 and 1 definitions also apply to Emergency stop
categories.
T1
Proof test interval (IEC 61508). T1 is a parameter used to define the
probabilistic failure rate (PFH or PFD
avg
) for the safety function or
subsystem. Performing a proof test at a maximum interval of T1 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
T1 values stated cannot be regarded as a guarantee or warranty. See
also section
on page
Telegram
Message
TP
Test pulse. Term diagnostic pulse is used in this manual.
TWCDT
Total worst case delay time
Validation
Confirmation by, for example, analysis that the safety system meets the
functional safety requirements of the specific application.
Verification
Confirmation by, for example, testing that the safety system meets the
requirements set by the specification.
Term /
Abbreviation
Description
Summary of Contents for FSO-12
Page 1: ... OPTIONS FOR ABB DRIVES FSO 12 safety functions module User s manual ...
Page 4: ......
Page 12: ...12 Table of contents ...
Page 36: ...36 Safety information and considerations ...
Page 136: ...136 Safety functions ...
Page 196: ...196 PROFIsafe 5 To read the diagnostic messages select the I O Device Diagnostics tab ...
Page 200: ...200 PROFIsafe ...
Page 326: ...326 Start up ...
Page 386: ...386 Dimension drawings ...