Bosch Rexroth IndraControl S20 Manual page 39
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Also See for Rexroth IndraControl S20:
- Manual (88 pages) ,
- System and installation manual (124 pages)
Table of Contents
DOK-CONTRL-S20*PSDO*8*-AP02-EN-P
IndraControl S20 Module With Safe Digital Outputs S20-PSDO-8/3
Actuator
Achievable
SIL/SILCL/Cat./PL
Error type
Error in the actuator
Despite being disabled, the actuator
does not switch to the safe state (e.g.,
a contact will not open).
Actuator cannot be enabled
(e.g., interrupt).
Other errors
(depending on the actuator)
Error in the wiring
Interrupt
Cable interrupt between output and
actuator or between actuator and
ground
Cross-circuit
Output to output
Short circuit
Output to ground
or
output to FE
Fig. 7-5
Single-channel: test pulses enabled
1
2
SF = safety function,
Basic specifications
Single-channel
SIL 2/SILCL 2/Cat. 2/PL c
WARNING
The specified safety category can only be achieved under the following condition:
•
Enable the test pulses in order to achieve Cat. 3 and PL d.
Enable the test pulses to improve device diagnostics and for long off
times.
Device diagnostics and behavior of the module in the event of an
error
Detec-
Diag-
Loss of
tion
nostics
SF
No
None
Yes
No
None
No
No
None
No
Yes
All
Yes
LEDs
OUT:
red on
Yes
Short
No
circuit
or over-
load,
2
OUTx
OUTx = diagnostic message (LED) for each output X
Bosch Rexroth AG
Connection examples for safe outputs
Two-channel
SIL 2/SILCL 2/Cat. 3/PL d
Loss of safety function
Remark
1
Detect errors using external monitoring. Please note all errors that
can occur in the actuator.
Test the shutdown capability of the actuator at suitable intervals.
If necessary, use a two-channel actuator.
Detect errors using external monitoring. Please note all errors that
can occur in the actuator.
Ensure that this error does not result in delayed system startup.
Please note all errors that can occur in the actuator.
Detect errors using external monitoring. Please note all errors that
can occur in the actuator.
Ensure that this error does not result in delayed system startup.
When the outputs are disabled, a cross-circuit between the outputs
is only detected if the test pulses are enabled. If an error is detected,
the module disables all its outputs.
The error is detected in the ON state. The output is disabled (safe
state). The module cannot be switched on again with an edge from
"0" to "1" until the error has been removed and acknowledged.
WARNING
An operator acknowledgment can result in unexpected machine
startup.
•
Please note that an operator acknowledgment can result in
the outputs being re-enabled.
37/82
Unexpected machine
startup
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