Sector or Building #2
Sector or Building #1
Sector or Building #3
Input Expander
Input Expander
Input Expander
Reader Expander
Input Expander
Output Expander
Power Supply
Controller
Dialer’s Earth
Ground Connection
V-
Earth Ground
Link Connection
DIN Rail Enclosure
DIN Rail Enclosure
DIN Rail Enclosure
Module Network (RS-485 N+, N-, NA and NB)
DIN Rail Ground Connections (multiple cabinets in different rooms, sectors, or buildings)
The
Dialer's Earth Ground Connection
applies to modem model controllers only.
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-HRDM-DIN | Protege Half DIN Rail 2 Door Reader Expander | Installation Manual
8
