KEB COMBIVERT F5, Руководство по установке

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GB - 19
Safety Function STO
3.2 Classification of STO according IEC 61508
PFH 2.6 • 10
-12
1/h
PFD 2.3 • 10
-7
per request
Proof-Test-Interval T 20 years
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
Control category 4
MTTF
D
>1000 years
DC high
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 volta -
ge.
• 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 protection against pollution (pollution degree 2) the installation of the units shall be
provided in environment with increased degree of 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).
Selection of
suitable vol-
tage sources
Use for the connection only suitable voltage sources with safe
isolation (SELV / PELV) in accordance with VDE 0100 with no -
minal voltage of 24 Vdc ± 10%. Pay attention on a sufficient
overvoltage category of the voltage supply.
3.5 Functional Description
The COMBIVERT with integrated safety function meets the following function according to
IEC 61800-5-2:
• „Safe torque off" (Safe Torque Off – STO)
The safety-related disconnection according to STO is reached by a two-cannel opto-coupler
blockage. The supply of the opto-couplers, which are responsible for the commutation of the