NetSure
™
-48V DC Power System
Quick Start Guide, QS582127000 (Issue AC, December 10, 2013)
Spec. No: 582127000
Code: QS582127000
Model No: 721
NPBB
Issue AC, December 10, 2013
[32]
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. The EIB provides a
total of eight (8) DC voltage inputs for these connections. An alarm is issued when either battery block voltage or battery midpoint
voltage is abnormal. Refer to
for pin-out information.
Refer to
for connection details. Refer to the ACU+ Instructions (UM1M820BNA or UM1M820DNA400) and program the
following parameters found in the EIB menu.
•
Battery Block Monitoring
Voltage Type: Set to “48 (Block 4)”. This selects the EIB to monitor up to two (2) 48V battery strings with four (4) 12V blocks
per string
BlockVDiff(12V): This menu item appears if “48 (Block 4)” is selected above. Set to the alarm threshold for battery block
monitoring per site requirements. The ACU+ issues an alarm when any block voltage of any battery string has an abnormal
value. The alarm is issued when the difference between any block voltage and a reference voltage is greater than the value of
the block voltage difference setting.
Block In-Use: Set to the number of 12V battery blocks being used.
•
Midpoint Monitoring
Voltage Type: Set to “Midpoint”. This selects the EIB to monitor the midpoint voltage of up to eight (8) battery strings.
BlockVDiff(Mid): This menu item appears if “Midpoint” is selected above. Set to the alarm threshold for battery midpoint
monitoring per site requirements. The ACU+ issues an alarm when any battery midpoint voltage of any battery string has an
abnormal value. The alarm is issued when the difference between any battery midpoint voltage and a reference voltage is
greater than the value of the block voltage difference setting.
Block In-Use: Set to number of 12V battery blocks being used.