UM1M820BNA User Instructions
Issue AH, March 4, 2013 Spec No. 1M820BNA (Model M820B)
Spec No. 1M820DNA (Model M820D)
34 Chapter 2. Operation
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When done, set “Relay Test” to “Disabled”.
When the ACU+ is equipped with the Lithium Ion Battery Configuration for use with Spec. No. 588820300
NetSure™ Battery Rack System, the only required settings for battery functions is the float voltage and
ABCL (Active Battery Charge Current Limit) point.
Note: The maximum value that the ABCL point can be adjusted to is 60A, which is below the maximum
current the battery can handle.
The batteries communicate their status and alarms to the ACU+. The ACU+ displays these via the LCD
and WEB interfaces.
Batteries are added to the ACU+ inventory as they are detected. If a battery communications cable is
removed, a Li-Ion Battery Communication Fail alarm is generated. If the controller resets while a Li-Ion
Battery Communication Fail alarm is active, the alarm changes to a Li-Ion Battery Lost alarm. If you clear
any of these alarms, that battery is removed from the ACU+ inventory.