ABB S500 - Page 28

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V2 S500 Hardware 1-28 System Data S500 / Issued: 01.2007
Block diagram of the digital I/O modules, earthing concept
Power
DC532/DI524
I/O Terminal Unit TU515/TU516
ZP
supply
DIN
rail
I/O-Bus
Digital
UP CH-ERRx
0V
UP
+24V
Inputs/outputs
I/O-Bus
I/Os
I/O interface
1M
1M
ZP ZP
Figure: Block diagram of the digital I/O modules, earthing concept