Sevcon Gen 4 Fault Question: Changing CAN Node

[methods]

Hey...

I have a pair of Sevcon Gen4 controllers
Both are working perfectly while configured as CAN node 1
They are on the same CAN buss and the bus is terminated properly

When I use the Sevcon Software to change the node ID from 1 to 2... I get faults on whichever controller is set to 2 (or any other node)

I am not talking about errors involving having two nodes of the same number on the same buss.

Both are set up stand alone. Its not a Master Slave configuration.
Application is a regenerative motor Dyno - where one runs a stepping drive profile script and the other steps loads.

The errors I am getting are:
0x5044 Param dyn range
0x4f41 Internal


Ideas?


thanks,
-methods

 

[Biff]

use dvt helper menu item to "find range errror" I suspect it is the "Emergency (EMCY) telegram COB-ID" object 0x1014

Node 1 value is 0x00000081

I think it is supposed to be 0x00000082 for node 2 etc., but not sure. put the controller in pre-op, change the param, then put it back in operational, power cycle and verify the fault is gone. if not check that you actually changed the value.

-ryan

 

[methods]

You are awesome Biff... thanks for all your support.

I will report back results tomorrow.

-methods

P.S. FYI ... for those working on similar Sevcon issues please PM me and direct me to your thread if I can help!

 

[Doctorbass]

Yes that threasd might be usefull for those who might use dual Gen 4 on a setup!

Btw Arlo did that already.

Biff is awsome

Doc

 

[methods]

Of course... Biff was right

The menu should really be a giant 6" x 6" button... but in DVT Helper (The 'H' Icon) there is a sub menu for Find Range Error. This is probably the most useful and necessary tool provided by Sevcon. Simply selecting this menu item navigates directly to the specific tab where faults originate from (buried tabs...) and gets you close enough to intuit a solution.

First... the error


All errors cleared


I would like to belabor the point: Folks like Biff who share their discoveries and information freely... instead of just lurking, taking, and not giving back... or even worse - purposely withholding helpful information in a competitive way... are the hero's of the electric revolution. There will always be a spot at the head of the soup line for Biff. :wink:

-methods

Keywords: Sevcon Gen 4 error Sevcon help Gen4 help gen 4 help sevcon fault sevcon gen4 fault sevcon node

 

[methods]

Now... to Dyno Test some Motors

I am thinking that most people want to see Power, Torque, and Efficiency vs RPM?
Any suggestions as to the formatting of test results will be taken into consideration.

-methods

 

[Doctorbass]

Now... to Dyno Test some Motors

I am thinking that most people want to see Power, Torque, and Efficiency vs RPM?
Any suggestions as to the formatting of test results will be taken into consideration.

-methods

method,

How will you get the right DCF for every motor you test? will you by your own measure all parameters and set them in DVT to make your own DCF motor file?

As far as i know if you dont have the corresponding file for your motor it will be difficult to get it working asn get proper performances.. btw i'm looking for a dcf for common hub motor.

I knwo that in some DVT version you can use some motor autodetect features but i never used these yet.

witch DVT version do you have?

Doc

 

[Samd]

Hey guys,
I loved what methods said about Lurkers above. I've got a Sevcon 4 in a bike I bought, appreciate the help here. Your tips are really appreciated.

There is a guy on aussie ebay dumping a bunch of Sevcon 4 units cheap as he is winding up his scooter business. If anyone needs access to one I can help with shipping. I bought a couple of qs273 off him, he seems legit. Lemme know if I can help if anyone wants one.

Cheers guys.

 

[methods]

method,

How will you get the right DCF for every motor you test? will you by your own measure all parameters and set them in DVT to make your own DCF motor file?

Doing all the same motors

As far as i know if you dont have the corresponding file for your motor it will be difficult to get it working asn get proper performances.. btw i'm looking for a dcf for common hub motor.

I knwo that in some DVT version you can use some motor autodetect features but i never used these yet.

witch DVT version do you have?

I am using an older version. If I get time tho... and I have access to it... I will share what I learn from trying to "auto learn" a hub.

Doc

Sevcon really needs to just implement a "RETARD MODE" that emulates a trap controller and "just works" out of the box. It is OF COURSE possible - and simple. Why they dont............ We can only speculate

-methods

 

[methods]

Hey guys,
I loved what methods said about Lurkers above. I've got a Sevcon 4 in a bike I bought, appreciate the help here. Your tips are really appreciated.

I will make an extra effort to post all of my questions and answers here on the forum and eventually we can compile the information into a Getting Started thread. At this point in time I am fairly competent... I can fool with the advanced features and we have a start on an Arduino that can emulate throttle, brake, direction, etc.

In a few weeks we will have a full blown automated dyno so by the time I am done with that I should be quasi-expert. Happy to answer any questions that I can.

-methods

 

[Pajda]

As far as i know if you dont have the corresponding file for your motor it will be difficult to get it working asn get proper performances.. btw i'm looking for a dcf for common hub motor.
Doc

I think that the main problem with programing sevcon controllers is a lack of documentation. Especially application notes about their way of implementation of FOC.

I knwo that in some DVT version you can use some motor autodetect features but i never used these yet.
witch DVT version do you have?
Doc

My local Sevcon representative told my, that the tool for autotuning of motor and controller parameters is called SCWiz and it works very well, but for ACIM only!