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Installation Instructions IM581127000
Spec. No. 581127000 (Model 710NPBA) Issue AB, March 22, 2012
Chapter 4. Making Electrical Connections Page 53
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.
Temperature Probes: Temperature probes are connected to the IB2 (ACU+ Controller
Interface Board) and/or optional EIB (ACU+ Controller Extended Interface Board)
mounted inside the distribution cabinet.
Note: Each temperature probe consists of two pieces that plug together to make a
complete probe. See SAG581127000 for part numbers and descriptions.
Up to two (2) temperature probes can be connected to the IB2 (ACU+ Interface
Board). Up to two (2) additional temperature probes can be connected to the
optional EIB (ACU+ Extended Interface Board). Any combination of the four (4)
temperature probes can be programmed to monitor ambient temperature and/or
battery temperature. A temperature probe set as a battery probe can also be
designated to be used for the battery charge temperature compensation feature, or
the battery charge temperature compensation feature can be programmed to use the
average or highest value of all battery temperature probes. The battery charge
temperature compensation feature allows the controller to automatically increase or
decrease the output voltage of the system to maintain battery float current as battery
temperature decreases or increases, respectively. Battery life can be extended when
an optimum charge voltage to the battery with respect to temperature is maintained.
A temperature probe set as a battery probe can also be used for controlling against
battery thermal runaway (BTRM feature). Refer to the ACU+ User Instructions
(UM1M820BNA) for programming information.
The temperature sensor end of the probe contains a tab with a 5/16” clearance hole
for mounting.
A temperature probe programmed to monitor battery temperature should be mounted
on the negative post of a battery cell to sense battery temperature. A temperature
probe used for battery charge temperature compensation or BTRM (Battery Thermal
Runaway Management) should also be mounted on the negative post of a battery
cell. A temperature probe programmed to monitor ambient temperature should be
mounted in a convenient location, away from direct sources of heat or cold.