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NetSure
™
-48V DC Power System
Quick Start Guide, QS582127000 (Issue AC, December 10, 2013)
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
Refer to
Figure 23
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.
Spec. No: 582127000
Model No: 721
NPBB
Figure 24
for terminal locations and
Table 5
for pin-out information.
[32]
Code: QS582127000
Issue AC, December 10, 2013
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