Hello everybody i am out of concept with my sevcon.
Little summary
I'm running a TP100 (I installed indoor sensors)
With a sevcon gen4 size 4 4835
All installed on a kind of moped (solex).
The motor controller torque worked relatively well
And then after a stop to change the battery when restarting the controller
The mistake:
No worry of tension or short circuit.
According to my research the transistors have burned after a short circuit on the engine
Ok, it's not cool
But the problem is that the engine is not short circuit, the hall sensors have more.
I measured the phases with an oscilloscope: 3 beautiful waves. And the same resistance
I'm lost
How to check the motor ?
How to check the controller?
Thanks for your help
Sevcon error
Re: Sevcon error
Sounds like the motor is OK.
Disconnect the battery and measure resistance with a meter between each motor phase wire and battery positive going to the controller. Swap meter probes and measure both directions. Repeat measurements between phase wires and battery negative going to controller.
Each of these measurements should look like a diode if the controller is good. If your meter has a diode check mode, use it.
If you see any measurements that look like near zero (same as touching the probe tips together), it indicates a shorted FET.
Disconnect the battery and measure resistance with a meter between each motor phase wire and battery positive going to the controller. Swap meter probes and measure both directions. Repeat measurements between phase wires and battery negative going to controller.
Each of these measurements should look like a diode if the controller is good. If your meter has a diode check mode, use it.
If you see any measurements that look like near zero (same as touching the probe tips together), it indicates a shorted FET.
"One test is worth a thousand opinions"
Re: Sevcon error
0x4DC3 error is " Battery voltage has dropped below critical level". I would investigate that as a priority.
The others are top mosfet short circuit on all three phases, that is motor phase to Bat+. Following Fechter's advice will determine if that is the case. Let us know how you get on.
The others are top mosfet short circuit on all three phases, that is motor phase to Bat+. Following Fechter's advice will determine if that is the case. Let us know how you get on.
“You never know if quotes on the internet are genuine.” - Abraham Lincoln
Re: Sevcon error
Good news ?
Perhaps It may be when the switch opens and therefore the voltage drops?kiwifiat wrote: ↑Jul 05 2019 7:56pm0x4DC3 error is " Battery voltage has dropped below critical level". I would investigate that as a priority.
The others are top mosfet short circuit on all three phases, that is motor phase to Bat+. Following Fechter's advice will determine if that is the case. Let us know how you get on.
Re: Sevcon error
Yes, that's very good news. It looks like the FETs are OK at least.
Now look for a bad connection somewhere in the main power wiring. Good chance if there is a bad connection, it will show signs of heat.
Now look for a bad connection somewhere in the main power wiring. Good chance if there is a bad connection, it will show signs of heat.
"One test is worth a thousand opinions"
Re: Sevcon error
Thanks for your help
Can you think the main contactor can make mistake
It's little be old but working.
Can you think the main contactor can make mistake
It's little be old but working.
Re: Sevcon error
If the contacts are burnt, it could become intermittent and give you that error. Some of them come apart for inspection.
"One test is worth a thousand opinions"
Re: Sevcon error
Hi,
Yesterday i find time to make inspection and i found this: It's not very burnt but a little
In my mind It's to simple
And good news motor and controller working.
Thanks a lot for help
Yesterday i find time to make inspection and i found this: It's not very burnt but a little
In my mind It's to simple
And good news motor and controller working.
Thanks a lot for help