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DIN Rail Ground Connections (multiple cabinets in different rooms, sectors, or buildings)
DIN Rail Enclosure
Controller
Dialer's Earth
Ground Connection
Power Supply
V-
Earth Ground
Link Connection
Sector or Building #1
Note that the DIN rail enclosure earth terminal is connected to the power supply V- terminal.
There must be only one single earth grounding point per system.
PRT-ZX8-DIN | Protege DIN Rail 8 Input Expander | Installation Manual
Module Network (RS-485 N+, N-, NA and NB)
DIN Rail Enclosure
Sector or Building #2
Reader Expander
Input Expander
Output Expander
DIN Rail Enclosure
Input Expander
Input Expander
Input Expander
Sector or Building #3
8
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