Connection Examples for Safe Outputs
44
Bosch Rexroth AG
DOK-CONTRL-ILPSDO8****-AW04-EN-P
Rexroth Inline Module with Safe Digital Outputs R-IB IL 24 PSDO 8-PAC
Cat. 3
•
Use proven safety principles.
•
Use appropriately qualified actuators (see
controlled devices/actuators” on page 19
).
•
Please note that mechanical failure of the switching device can result in the
loss of the safety function.
•
Prevent the welding of contacts on the connected contactors or safety relays
with appropriate protection against overcurrent and surge voltage.
•
All errors (e.g., cross circuits) that cannot be detected can result in the loss of
the safety function. Take appropriate measures to prevent such errors.
Suitable measures include, for example, protected cable installation or
double insulation. Please note the information in the following tables.
•
Please take into consideration errors with a common cause.
•
Ensure that
a single
error does not result in the loss of the safety function.
•
Once the test pulses have been disabled, test the shutdown capability of the
actuators at regular intervals.
Cat. 4
•
Use proven safety principles.
•
Use appropriately qualified actuators (see
controlled devices/actuators” on page 19
).
•
Please note that mechanical failure of the switching device can result in the
loss of the safety function.
•
Prevent the welding of contacts on the connected contactors or safety relays
with appropriate protection against overcurrent and surge voltage.
•
An accumulation of errors must not result in the loss of the safety function.
Following the third error, evaluation can be aborted if the probability of further
errors occurring is low.
•
All errors (e.g., cross circuits) that cannot be detected can result in the loss of
the safety function. Take appropriate measures to prevent such errors.
Suitable measures include, for example, protected cable installation or
double insulation. Please note the information in the following tables.
•
Please take into consideration errors with a common cause.
•
Once the test pulses have been disabled, test the shutdown capability of the
actuators at regular intervals.
