Emerson Series 600 User Manual

The Versatile Interface Board (VIB) is designed to provide real-time status feedback and control of 

the Liebert FS. The VIB has 16 digital outputs (isolated, dry Form C contacts) and three digital 

inputs (optical isolator) that provide the user with information about the operational mode and state 

of charge of the Liebert FS, as well as the ability for the user to start the system, stop the system and 

clear alarms.
The VIB consists of the following components:

• 12578 - Auxiliary I/O Interface Board
• 11516 - User Interface Board (UIB)
• 12781 - Cable Assembly
• Mounting hardware

Figure 116 shows the two main electrical components of the VIB.