Emerson NetSur 721NPBB Quick Start Manual page 33

NetSure ™ -48V DC Power System
Quick Start Guide, QS582127000 (Issue AC, December 10, 2013)
System Interface Circuit Card
The System Interface Circuit Card provides connections for the following.
Refer to Figure 21.
•
RS-485 (used for communication with SM modules)
•
RS-232 (used for communication with a DPU)
•
External Battery Monitoring (circuit card installed in Main Bay only)
•
External System FA Signal (circuit card installed in Main Bay only)
•
External Battery FA Signal (circuit card installed in Main Bay only)
•
Battery Tray FA Signal
•
Bay Voltage Monitoring Test Points
• Bay Load Shunt Monitoring Test Points
Spec. No: 582127000
Model No: 721
NPBB
[25]
Code: QS582127000
Issue AC, December 10, 2013