Burnt effector

Ulcast · 7 May 2022, 15:40

Hi, i have a problem with my effector. Some days ago instarted having problems with heater faults.i checked the cables and they were ok. Yesterday the heater didn't work at all. I disassembled everything and found the effector as you can see in the picture. Why has this happened?

[url=https://postimg.cc/D4fdf36K][img]https://i.postimg.cc/HnXS2p7j/20220705-172305.jpg[/img][/url]

Thanks

jay_s_uk · 5 Jul 2022, 15:41

@ulcast what heater are you using? voltage? wattage?

Ulcast · 5 Jul 2022, 16:10

@jay_s_uk said in Burnt effector:

@ulcast what heater are you using? voltage? wattage?

Original e3d heater 12v 30w.

Phaedrux · 5 Jul 2022, 20:19

What heater faults did you get?

What were you using for wiring?

When and where did you purchase the Smart Effector?

Ulcast · 7 Jun 2022, 06:56

@phaedrux I bought it in 2018 on reprapworld.com,
I used the original wires of the heater.

While i was printing the temperature dropped down and it have me the fault heater message. It happened two times, i tried printing a third time, but it didn't heat up.

Phaedrux · 7 Jun 2022, 17:40

Are you able to test the heater cartridge itself (carefully) to see if it's still functional?

Just to confirm that you are using a 12v PSU with your 12v heater cartridge? Had it been functioning correctly for some time before the fault?

Did the heater cable have strain relief? It's possible there was a weak crimp or cable causing a poor connection and increased resistance leading to the heat.

Ulcast · 7 Jul 2022, 09:04

@phaedrux said in Burnt effector:

Are you able to test the heater cartridge itself (carefully) to see if it's still functional?

Just to confirm that you are using a 12v PSU with your 12v heater cartridge? Had it been functioning correctly for some time before the fault?

Did the heater cable have strain relief? It's possible there was a weak crimp or cable causing a poor connection and increased resistance leading to the heat.

Yes it is 12v, it has been working for 4 years, no problem.
Sonetimes the heater wire broke near the molex connector because i don't have strain relief (i don't know where to buy it). So i put some electrical tape around the wires.
This time the wire was ok.

Now i soldered the pin back and everything is working again, but I'm afraid it could hallen again... I'll buy a new molex connector and crimp again all the wires very carefully.

Phaedrux · 7 Jul 2022, 17:31

We've added a note strain relief here: https://docs.duet3d.com/en/Duet3D_hardware/Accessories/Smart_Effector#warnings