[jaspersk]

I installed a 144V version of Elcon 2500 today. It is communicating via CAN with Orion BMS. The lights are flashing red and green continuously. The manual says this is because the battery is not connected but I have 148V at the battery terminal. Any ideas?

[bjfreeman]

Originally Posted by jaspersk

I installed a 144V version of Elcon 2500 today. It is communicating via CAN with Orion BMS. The lights are flashing red and green continuously. The manual says this is because the battery is not connected but I have 148V at the battery terminal. Any ideas?

http://www.diyelectriccar.com/forums...ght-54658.html

http://www.diyelectriccar.com/forums...500-55119.html

http://www.elconchargers.com/catalog...53/7638094.htm check out alarms

the manual also suggests
R G R G R G _ _ Internal thermal sensor of charger fault
R G R G R G R _ Communication interface fault

―_‖ denotes one second stop
Above LED flashing sequence is just one cycle, the LED will flash repeatedly when
in fault

CANBUS Communication
The Orion BMS has two separate CAN (controller area network)interfaces.Both
interfaces have a programmable frequency (baud-rate)and can be used independently
The BMS features up to ten programmable CAN messages which are fully
programmable and can be programmed to transmit on either or both CAN interfaces.These
messages are designed to be flexible to be used to interface with other electronic control
units,computer systems,display clusters or any number of different devices.Virtually all BMS
parameters are able to be programmed into these CAN messages.Please see the “Editing
section of the Software Utility manual for details on programming custom CAN
In a CANBUS network there are always exactly two terminator resistors.It is up to the
user to ensure that there is the proper number of terminator resistors on each CAN network.
By default,the Orion BMS has a terminator resistor already loaded on CAN interface #1,
however CAN interface #2 does not have a terminator resistor loaded.This is done by
default so that the standard unit can be used whether or not a terminator resistor is necessary.
If specified during ordering,a different combination of terminator resistors can be provided (for
example,both interfaces with or without a terminator resistor.)
The CAN interface is also used to upload settings and update the BMS firmware.While
the settings (also known as battery profile)can be updated from both interfaces,code firmware
updates to the actual BMS can only be performed over CANBUS interface #1 .Firmware
updates may be necessary to add additional future functionality.

[jaspersk]

It flashes red/green 4 reds & 3 greens. Andrew at Orion was extremely helpful in pointing me in the right direction. He helped me see the message correctly on Can 1. He also has better manuals than available elsewhere. This exact red/green sequence means that there is a communication fault. My cable between the Orion and the Elcon is only 3 feet so rather than put 120 ohms on both ends, I just put 60 ohms on one end. That could be the problem. My next step is to see if I can communicate with it via Candapter. If that works, I might need to put resistors on both ends.

[bjfreeman]

the resistor are for impedance termination, and prevent ringing.
changing them does cause a problem.

[jaspersk]

Originally Posted by bjfreeman

the resistor are for impedance termination, and prevent ringing.
changing them does cause a problem.

Well, I thought I could get away with 60 ohms on just one end since it was such a short cable but you are right. I redid the setup so I have 120 ohms on each end of the 4 foot cable and now it works.

[bjfreeman]

congrats.
I have to add more characters so that is what this line is.