Quick Start Guide
Flatpack2 PS System, 4U, SP2-based
356825.103, 2v0 -2011-09
21
Battery Monitor’s Symmetry Connections
48V (Mid-Point Measurement)
Each
Battery Monitor
is equipped with 4 battery symmetry inputs, enabling symmetry
measurement of 4 battery strings using the
Mid-Point
Measurement
Method.
Read the “
Installation Guide Battery Monitor CAN Node”
, document number 351507.033. Refer
also to “
Installation Guide Battery Monitor – Symmetry Kit
”, document number 351497.033, which
is included with the kit. The Battery Fuse and Battery Current cables are not shipped with the
Battery Monitor ~ Symmetry Kit.
Battery Monitoring
Appendix
Battery Symmetry — String 1 to 4
Mid-point Measurement
One measurement per string, four strings
Battery Monitor
Part 242100.300
ID# <33>
Set all 4
DIP
switches
OFF (up)
—
(-48V) Outer
Terminal
+
0V Outer
Terminal
Intercell Links
Block1
- +
+
-
+
-
+
-
Block4
Block3
Symmetry 1.1
+
+ +
+
4
3
2
1
Symmetry 1.2
Symmetry 1.3
Symmetry 1.4
Battery String 1
Battery String 2
Battery String 3
Battery String 4
Notice:
When monitoring many battery strings, always connect Battery Monitor with
ID#<33> to battery strings 1 (lowest), 2, 3 and 4. Then Battery Monitor with
ID#<34> to string 5, 6, 7 and 8. And so on. The controller will then refer to
the correct battery string.
Example o
f
Batter
y Symme
try Conne
ctions on
th
e
Batter
y Mo
nitor
, 48V Syste
m
s