Vertiv Liebert iCOM - Page 129

Troubleshooting Unity Connection and Set Up
Figure 8.1 RS-485 Expansion Board
No. Description
1 Embedded Unity Ethernet port (P74) for IP protocols
2 Embedded Unity RS-485 Terminal Block (TB3) for BACnet or Modbus over twisted pair
3 RS-485 Expansion board port (EP1)
The expansion board is needed only if there is a requirement to do Velocity 4 to Vertiv™ Liebert®IntelliSlot™ based cards and
BACnet or Modbus RS-485 simultaneously. See Figure 8.2 on the next page for the expansion board.
8 External Monitoring andBuilding ManagementSystems
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Vertiv™ Liebert® iCOM™Installer/User Guide