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Installation Instructions IM581127000
Spec. No. 581127000 (Model 710NPBA) Issue AB, March 22, 2012
Chapter 4. Making Electrical Connections Page 55
This document is property of Emerson Network Power, Energy Systems, North America, Inc. and contains confidential and proprietary information owned by Emerson Network Power, Energy
Systems, North America, Inc. Any copying, use, or disclosure of it without the written permission of Emerson Network Power, Energy Systems, North America, Inc. is strictly prohibited.
Optional EIB (ACU+ Controller Extended Interface Board)
The optional EIB (ACU+ Controller Extended Interface Board) provides additional
connection points for voltage and current inputs, programmable relay outputs, and
temperature probes. Refer to Figure 4-7.
Procedure
Voltage Inputs, Current Inputs, and Programmable Relay Outputs: Voltage input,
current input, and relay output leads are connected to screw-type terminal blocks located
on the optional EIB (ACU+ Controller Extended Interface Board) mounted inside the
distribution cabinet. Recommended torque for these connections is 5 in-lbs.
a) Current Inputs: Connect up to three (3) shunt inputs to the EIB (Extended
Interface Board). Observe proper polarity. Refer to Table 4-2 to determine what
shunt input to connect to on the EIB board. Refer to the ACU+ User Instructions
(UM1M820BNA) and program the shunt input parameters found in the EIB menu.
Number of
Battery Shunts
Number of
Load Shunts
Connect to EIB Shunt
Inputs as Follows
1
0
Shunt 1 – Battery 1
Shunt 2 – none
Shunt 3 – none
2
0
Shunt 1 – Battery 1
Shunt 2 – Battery 2
Shunt 3 – none
3
0
Shunt 1 – Battery 1
Shunt 2 – Battery 2
Shunt 3 – Battery 3
0
1
Shunt 1 – none
Shunt 2 – none
Shunt 3 – Load 1
0
2
Shunt 1 – none
Shunt 2 – Load 2
Shunt 3 – Load 1
0
3
Shunt 1 – Load 3
Shunt 2 – Load 2
Shunt 3 – Load 1
1
1
Shunt 1 – Battery 1
Shunt 2 – none
Shunt 3 – Load 1
2
1
Shunt 1 – Battery 1
Shunt 2 – Battery 2
Shunt 3 – Load 1
1
2
Shunt 1 – Battery 1
Shunt 2 – Load 2
Shunt 3 – Load 1
Table 4-2
Shunt Inputs to EIB Interface Board
b) Voltage Inputs for Battery Block and Battery Midpoint Monitoring: The
ACU+ can monitor battery blocks (12V blocks) or midpoint battery voltage of
battery strings connected to the EIB assembly. The EIB assembly provides a