KEB COMBIVERT F6 Instructions For Use Manual page 51

HCT
Component for current measurement in the power
circuit.
Hiperface
Bidirectional encoder interface of the company
Sick-Stegmann.
HSP5
Fast, serial protocol.
HTL
Incremental signal with an output voltage (up to
30V) -> TTL.
IEC 61508
Functional safety of electrical/electronic/program-
mable electronic safety-related systems.
IEC 61800-5-1
Adjustable speed electrical power drive systems.
Part 5-1: Safety requirements - Electrical, thermal
and energy requirements. German version EN
61800-5-1.
IEC 62061
Safety of machinery - Functional safety of safety-
related control systems.
ISO 13849-1
Safety of machinery - Safety-related parts of con-
trol systems - Part 1: General principles for
design.
MTTF
Mean service life until failure (Mean Time To Fail-
ure).
PELV
Safe protective extra-low voltage (earthed).
PFD
PFD (Probability of Failure on Demand) is a
measure of the failures per demand in accordance
with IEC 61508. It is used to determine the reliabil-
ity of safety-related systems.
PFH
The PFH value (Probability of Failure on Demand
per Hour) indicates the average probability of a
dangerous failure per hour.
ma_dr_f6-cu-k-inst-20144795_en
RS485
RS-485 is an industry standard according to
EIA-485 for a physical interface for asynchronous,
serial data transmission.
SELV
Safe protective extra-low voltage (unearthed;
<60V).
SIL
The safety integrity level is a unit of measurement
for quantifying risk reduction in accordance with
IEC 61508.
SinCos
Incremental encoder with sinusoidal signals.
SSI
Synchronous serial interface for encoder.
STO
Safe torque off (STO).
VARAN
Real-time Ethernet bus system
Glossary
51