Sevcon Twizzy noisy, troubleshooting
Posted: Mon Feb 24, 2025 10:54 am
Hi everyone,
I'm starting up a Sevcon Gen 4 with a Twizzy motor,
the set up worked well on bench with a 72v configuration, but now its on a custom battery pack made of 3S 8SVW (ID) module, so 88v nominal.
I've changed some parameters to adjust the battery set-up, but following the installation and the tunning the Sevcon is very noisy, it whistle and have some nocking if we don't go very smooth on the throttle,
Would you have any feedabck or experience on such a noisy set-up ? Is it now only tunning the Sevcon or could it be a bigger cause somewhere, hardware for exemple ?
No error on the sevcon while running, only the following error code at some moment while driving :
0x45CA : Vcap cutback for regen torque.
0x45C9 : Vcap cutback for monitoring torque
Any application note on how to adapt the difference of battery for the same set-up ?
thanks for your help,
I'm starting up a Sevcon Gen 4 with a Twizzy motor,
the set up worked well on bench with a 72v configuration, but now its on a custom battery pack made of 3S 8SVW (ID) module, so 88v nominal.
I've changed some parameters to adjust the battery set-up, but following the installation and the tunning the Sevcon is very noisy, it whistle and have some nocking if we don't go very smooth on the throttle,
Would you have any feedabck or experience on such a noisy set-up ? Is it now only tunning the Sevcon or could it be a bigger cause somewhere, hardware for exemple ?
No error on the sevcon while running, only the following error code at some moment while driving :
0x45CA : Vcap cutback for regen torque.
0x45C9 : Vcap cutback for monitoring torque
Any application note on how to adapt the difference of battery for the same set-up ?
thanks for your help,