10.3 Prohibited use
The safety functions must not be used if the drive is to be made inactive for Emergency-Off
situations. In an Emergency-Off situation, the main relay is switched off (by the Emergency-
Off button).
The device does not require maintenance. Opening the device voids the warranty. In case of
damage or malfunction the drive must be sent for repair or must be replaced.
10.4 Abbreviations used for functional safety
More abbreviations see (
Abbreviation Meaning
A#, AXIS#
A# or AXIS# are placeholders for the axis number. Used with keywords
(AXIS#.SAFE.STO.ACTIVATESOURCE) or signal names (STO-A-A#)
(
➜
# 53)
"see page 53" in this document
CCF
Common cause failure
FS
Functional Safety
FS1
Functional Safety Option 1 (STO)
HFT
Hardware fault tolerance
MTTFd
Mean time to dangerous failure
OSSD
Output Switching Signal Device
PELV
Protective Extra Low Voltage
PFHd
Probability of dangerous failure per hour
PL
Performance Level
SC
Systematic Capability
SIL
Safety Integrity Level
STO
Safe Torque Off
TM
Mission time
AKD2G-S Installation, Safety 1 | 10 Functional Safety
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