User Manual – 16 V and 48 V Modules
– Doc. No. 1008491.13
© 2014 Maxwell Technologies, Inc.
Page 5
3.2.2
Module to Module Connections
The 16 V and 48 V modules are equipped with the active voltage management circuit that protects
and monitors every cell within the module. Module-to-module balancing is not required.
Figure 2 – Series Connection of 48V Modules
Figure 3 – Parallel Connection of 48V Modules
3.2.3
Logic outputs
A single open collector logic output is available for overvoltage monitoring. This output will indicate
if any cell in the module has gone into an overvoltage condition. In addition, the output of the
NTC thermistor is also available for module temperature monitoring. The overvoltage signal and
temperature signal are available via the connector supplied with the module. Note: The passive
version (suffix “B02”) of the BMOD0500 only provides the output of the NTC thermistor for the
temperature monitor signal. There is no voltage monitoring signal in this module.
The logic outputs are isolated from the capacitor voltages and from chassis ground. The logic
outputs may be operated individually or wire-or’d to provide a single fault line. A table indicating
the pin out, indication and maximum current is provided below.
Pin
#
Wire
Color
Pin out
designation
Output
(16 V)
Output
(48 V)
Maximum
current
1
Black
GRND
2
White
Overvoltage
Alarm
High –
Inactive
Low - Active
High –
Inactive
Low - Active
5 mA
3
Red
Not used
N/A
N/A
N/A
4
Green
TEMP
NOTES:
1.
Pin #2 is not used for the BMOD0500 P016 B02 model with passive balancing.
2.
The Overvoltage Alarm will be asserted if any individual cell goes into an over voltage
condition. The range of the alarm threshold is as follows:
2.73V minimum
2.80V nominal
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