User manual

Installation
3
2.0 INSTALLATION
The OpenComms NIC-485 may be ordered as a factory-installed
option, and it may be installed as a kit for field retrofit to existing Lie-
bert units or as a self-contained unit in its own enclosure.
If ordered as a factory-installed option, proceed to 2.3 - User Connec-
tions for OpenComms NIC-485.
2.1 Retrofit Kit
As a retrofit kit, the circuit board is secured to a metal mounting
plate. The mounting plate then is attached to a flat metal surface in a
low-voltage section of the Liebert unit.
2.2 Self-Contained Unit
The self-contained model packages the interface card inside a steel
enclosure, for mounting external to the Liebert unit. A low-voltage
transformer is also provided.
Figure 1 Connections
Input Power
(Input to TB3)
DTE Serial Port
for Configuration
Modbus Output for BMS
(Output from TB2)
IGMnet or SiteScan
Comms from Unit
(input to TB1)