Classification Of Sto According Iec 61508; Classification Of Sto According En Iso 13849; Additional Instructions - KEB COMBIVERT F5 Installationsanleitung

Calculation of the jerk:
Rotation angle of the jerk W
This behaviour can occur either by a short circuit of the IGBTs or by interconnection (also
short circuit) of the control drivers. The error should be regarded as critical, if the drive re-
mains in STO status.
3.2 Classification of STO according IEC 61508
PFH
PFD
Proof-Test-Interval T
For SIL classification in connection with the applications consider the failure rates of the ex-
ternal switch devices for final evaluation.
3.3 Classification of STO according EN ISO 13849
Category
MTTF
D
DC
For the classification within a performance level in connection with the applications consider
the failure rates of the external switch devices for final evaluation.
3.4

Additional instructions

• The unit must be isolated from mains by main switch when working on parts under volt-
age.
• Mechanical brakes must be installed additionally if external forces have effect to the drive
axis, e.g. vertical axes (hanging loads) or rotary axes with asymmetrical weight distribu-
tion.
• For the protection against pollution (pollution degree 2) the installation of the units must
be provided in environment with increased protection (e. g. control cabinet IP 54).
• Make sure that no small parts fall into the COMBIVERT during assembly and wiring. This
also applies to mechanical components, which can lose small parts during operation.
• Check the safety functions and error responses and generate an acceptance report after
installation.
• The start-up can be prevented with interruption of the STO signals. STO may not be
released in case of danger according to EN 60204-1. Also note the instructions to the
external safety switch devices.
• Dimension the safety application by way that the corresponding input current of the safety
functions is available for the inputs (see chapter 2.5.1).
Use for the connection only suitable voltage sources with safe
Selection of
isolation (SELV / PELV) in accordance with VDE 0100 with nom-
suitable volt-
inal voltage of 24 Vdc ± 10%. Pay attention on a sufficient over-
age sources
voltage category of the voltage supply.
Safety Function STO
[°] = –––––––––––––––––––––––––––––––––
R
Pole-pair number p • gear reduction ratio g
2.6 • 10
-12
2.3 • 10
-7
20 years
4
>1000 years
high
180°
1/h
on demand
GB - 19