Bosch Rexroth ctrlX SAFETY, Руководство по применению

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"Mission Time" and "Proof Test" interval
●
The "Mission Time" of all components used has to be
observed and complied with. After the "Mission Time" of a
component has elapsed, the component has to be discarded
or replaced. It is not allowed to continue operating the
component!
● After the component was discarded ("Mission Time" has
elapsed), it has to be ensured that the component cannot be
reused (e.g., by disabling it).
● The "Proof Test" has not been specified for the ctrlX DRIVE
system. Therefore, the "Mission Time" cannot be reset by a
"Proof Test".
4.5.3 Calculating the total PFH value of a safety zone
To determine the required total PFH value of an installation or a safety zone,
the PFH values of the individual axes and of the required external
components have to be used for calculation as follows. The exemplary figure
below illustrates all the components relevant to the calculation:
1)
External component
Fig. 4-2: Determining the PFH for a safety zone
To calculate the PFH value of a safety zone, a valid PFH value has to be
available for all components which have an influence on the safety function (if
necessary, procure the PFH value from the component manufacturer).
PFH
safety zone
=PFH
selection_discrete
1) +PFH
axis_1
+PFH
axis_2
+...+PFH
axis_n
1) External component
The following conditions/restrictions apply to the general use of the formula
for PFH calculation for a safety zone:
Variable Value Description
PFH
selection_discrete
See manufacturer's specification
Enter the sum of the individual PFH values of the switches
or safety devices involved in the selection.
PFH
axis_x
See " tab. 4-7 "Safety
characteristics of the ctrlX DRIVE
system with the optional safety
technology module T0" on page 21 "
This value is independent of the safety level to be attained.
Tab. 4-8: Variable description to calculate PFH for a safety zone
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System overview
ctrlX SAFETY "Safe Torque Off" Safety Option in ctrlX DRIVE
Bosch Rexroth AG R911383774_Edition 03