ABB FPTC-01, User Manual

Page: 19 / 108

Introduction to the manual 19
SS1 Safe stop 1 (EN/IEC 61800-5-2).
A safety function in the FSO module.
SSE Safe stop emergency. A safety function in the FSO
module.
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.
Stop category 0 Uncontrolled stop (EN/IEC 60204-1)
Stop category 1 Controlled stop (EN/IEC 60204-1)
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
Proof test interval on
page 74 .
XFLT PTC input for the Safe motor temperature (SMT)
fault in the FPTC module
XWRN PTC input for a motor temperature warning in the
FPTC module
Zone Potentially explosive atmosphere. Hazardous areas
are divided into zones, according to the degree of
hazard. The degree of hazard is defined according
to the probability of the occurrence of explosive
atmospheres.
Term/abbreviation Description