Interface module
7.3 Interface module SB61
SIMATIC TDC hardware
190 System Manual, 08/2017, A5E01114865-AL
Signals
Voltage supply on plant side
24/48 V DC is available for the system side signals at terminal block X4:
2P
+24/48 V
Connect the cables using accessory kit SM11 "Power supply connector for interface
modules" (article number: 6DD1680-0BB0)
The maximum conductor cross-section at terminal X4 is 2.5 mm².
The power supply for the plant/system side is available at double test socket X5 (G; +):
+(2P of X4)
+24/48 V
It is not allowed to use the X5 test sockets in potentially explosive environments.
Note
When wiring the supply voltage, observe the “Installation and EMC Directives” chapter in the
User Manual.
The status of each of the eight signals is displayed by a yellow LED (1...8).
Terminal block for digital signals
There are three screw connections on terminal strip X2 for each signal:
● terminals 1 to 8 for 24 V binary signals
● terminals 11 to 18 for 48 V binary signals
● Terminals 51 to 58 for reference potential
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