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Bosch Rexroth AG
Connection examples for safe inputs
Parameterization
Input xx channel 1/channel 2
Assignment
Filter time (t
)
Filter
Symmetry
Start inhibit due to symmetry viola-
tion
Cross-circuit monitoring
8.3.4
Supply through OSSD
Sensor
Sensor supply
Achievable SIL/SILCL/Cat./PL
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IndraControl S20 Module With Safe Digital Inputs S20-PSDI-8/4
Typical parameterization
Parameterized as/value range
Both single-channel
3 ms
Disabled
Disabled
No cross-circuit monitoring
OSSD
+24 V
IN1_Ch1
GND
Fig. 8-7
Single-channel assignment of inputs: external supply (OSSD)
WARNING
Parasitic voltages can result in the loss of the safety function.
•
Connect the sensor ground directly to terminal point GND of the module. An
external ground may not be used.
Basic specifications
Single-channel OSSD output (with internal testing)
External (OSSD sensor)
SIL 2/SILCL 2/Cat. 2/PL d
DANGER
Cross-circuits can result in the loss of the safety function.
•
Prevent cross-circuits to achieve the specified PL.
DOK-CONTRL-S20*PSDI*8*-AP02-EN-P
Remark
Application-specific
70070027
Loss of safety function
Loss of safety function
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