The Industrial Raspberry Pi Forum

Hi,

during installation of equipment we had issue with surge brake down caused by main Power supply unit ( 220 -> 24V) .

Unit used :

Kunbus Revolution PI 100299
IO unit 100197

On both unit we have burned out power supply.

In order to repair can you please support me regarding electrical schematic component identification.

Hello dear Boba89, here is the information you need from the schematic. I hope that you manage to repair your digital IO module and wish you good luck with it.
If you have any questions, please contact me.

dirk wrote: 06 Oct 2020, 08:51 Hello dear Boba89, here is the information you need from the schematic. I hope that you manage to repair your digital IO module and wish you good luck with it.
If you have any questions, please contact me.

Hi Dirk,

thank you for replay.

I need more info regarding components specification listed below:

L200,L203 - Inductors inductance value (H) ?
D200 - according to electrical schematic is should be 3A/40V, and by visual check of component on electrical board we can see markings 35 that means voltage 13V. What is correct ?

Hi Boba89, the ferrites L200, L203 are the Würth components: WE-CBF SMT ferrite with the number:
742792097
Here is a link where the customer can view the data sheet:
https://www.mouser.de/ProductDetail/Wur ... gwZuY8hA==

The diode D200 is the diode RB050LAM-40 from Rohm, which has the marking "35".
stand on the case,
here the customer can view the data sheet
https://www.rohm.de/products/diodes/sch ... 40-product