![background image](http://html1.mh-extra.com/html/abs/alliance-e-series/alliance-e-series_user-manual_3491117050.webp)
Alliance Intelligent Battery Series
TM
User’s Guide
© 2020 American Battery Solutions Inc. All rights reserved. The data herein is intended as a guide and does not reflect the specification range for any particular property of this
product. Such data is based upon analysis of representative samples and not the actual product shipped. We based the information on data believed to be reliable on the date
compiled, but we do not represent, warrant, or otherwise guarantee, expressly or impliedly, the merchantability, fitness for a particular purpose, freedom from patent
infringement, suitability, accuracy, reliability, or completeness of this information or the products, materials or processes described.
Page 50
FAQ
For unused inputs (Ign Low, Ign 12V) it says that momentary application will turn on
ignition, but also unused inputs should be N/C.
Q: Does this imply that a momentary signal is needed?
A: The batteries can be woken with 3 different methods, Wake on CAN, Wake on Ign-
Wake on Ign +12V. If wake on Ign- then there are 2 methods that can be employed:
1.
momentary connection to ground like pressing ignition button on car, and then
transmitting CAN messages to keep alive.
2.
Maintaining a ground connection with no CAN.
In the first case, the batteries will stay alive until a shutdown command is given by the
host and CAN communication stops. If the second method is employed, then the
battery will shut down when the Ign- ground is released
Q: Do you mean by N/C to for Ign Low tie to GND or Ign +12V, and for Ing +12V tie
to GND or vice versa?
A: All unused pins can be left non-connected; they are internally pulled up/down.
Q: What happens if it pulled to 48V, can this be done through a resistor?
A: The Ign +12V is for use with an auxiliary battery as a lot of motive types of
applications do. The input is protected for 48V.
Q: Can this be wired as -48V system (+ve Ground) or are there internal
connections that prevent this? What about the +12V signal, would that become -
12V or is +12V still needed?
A: The internal FETs are only on the high side so everything would be isolated from the
battery. The internal power supply for the BMS is still referencing the negative
terminal so all switching would be relative to the negative terminal. I.e. Ign- would be
switched to negative terminal and Ign+ would be voltage referenced to negative
terminal.
Q: Are the CAN nodes isolated?
A: No.