
Glossary
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SBC
Safe brake control
SDI
Safe direction
SEL
Safe Emergency Limit
SELV
Safe protective extra-low voltage (unearthed;
<60V).
SinCos
Incremental encoder with sinusoidal signals.
SLA
Safely-limited acceleration
SLI
Safely-limited increment
SLP
Safely-limited position
SLS
Safely-limited speed
SMS
Safe maximum speed
SOS
Safe operating stop
SS1
Safe stop 1emergency stop according to IEC
60204-1 Stop category 1
SS2
Safe stop 2; emergency stop according to IEC
60204-1 Stop category 2
SSI
Synchronous serial interface for encoder
SSM
Safe speed monitor
SSR
Safe speed range; like SLS but with an upper and
lower limit with the same sign.
STO
Safe torque off