4
Integrating the local bus
4.1
General information
For the operation in an IndraControl S20 station, the module is integrated be‐
hind a Sercos S20 bus coupler (S20-S3-BK+).
For detailed information on the setup of an IndraControl S20 sta‐
tion, refer to the application description of the IndraControl S20
Loss of the safety function due to the use of
unsuitable voltage supplies
WARNING
For the voltage supply at the bus coupler, use only voltage supplies acc. to
EN 50178/VDE 0160 (PELV).
Ensure that the output voltage of the voltage supply for the bus coupler does
also not exceed 30.2 V in case of error.
Observe the general safety instructions, refer to
4.2
Supply voltage of the module logic
The voltage supply for the module logic is generated in the bus coupler and
fed into the S20 module via the bus base module.
For technical data of the supply voltage, refer to
The current currying capacity for the voltage supply U
BUS
depends on the bus
coupler used.
Observe the technical data and specifications in the bus coupler manual.
4.3
Supply voltage U
O
Loss of the safety function due to the use of
unsuitable voltage supplies
WARNING
Observe the general safety instructions, refer to
Loss of the safety function due to parasitic
voltage.
WARNING
Feed the supply voltages U
BUS
and U
O
at the bus coupler from the same
power supply unit to ensure that the loads of the module are not affected by a
parasitic voltage if an error occurs.
The supply voltage U
O
supplies the output circuits. For technical data of the
supply voltage U
O
, refer to
The maximum current carrying capacity via the main circuit U
O
is 8 A.
DOK-CONTRL-S20*SSDO*8*-AP02-EN-P
Bosch Rexroth AG
21/85
IndraControl S20 Module With Safe Digital Outputs S20-SSDO-8/3
Integrating the local bus
