Interface module
7.5 Interface module SB71
SIMATIC TDC hardware
206
System Manual, 08/2017, A5E01114865-AL
7.5.1
Signals
Yellow LED
The status of each of the eight signals is displayed by a yellow LED (1...8).
Terminal block for digital signals
Terminal block X2 provides two screw terminals for each signal:
●
Terminals 1 to 8 for digital outputs, 24/48 V DC
●
Terminals 51 to 58 for reference potential
7.5.2
Application notes
The interface module is equipped with a ribbon cable connector X1 that is used to connect
the output signals of the SIMATIC TDC system, as well as a terminal block X2 for wiring the
plant signals.
The interface module is designed only for vertical mounting positions due to thermal losses
to be dissipated.
Other information
For more information on EMC and environmental conditions, refer to section "General
technical specifications (Page 37)"!
CAUTION
Simultaneous operation of more than three digital outputs in short-circuit mode is not
allowed due to the maximum permissible thermal losses per interface cubicle.
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