BOSCH 48V 350A DC motor controller

Discussion in 'General Electronics Chat' started by dejanm80, Jul 2, 2015.

  1. dejanm80

    Thread Starter New Member

    Jul 2, 2015
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    Hi, I have the mentioned controller but I don't have the manual (it is an older one and there is no model labeled on it) and I need to connect a 5kW DC motor on it. There is a 25 pin connector on it, but I don't know the function on the wires. I managed to find out the 3 control wires, that regulate the output voltage. Pins 2, 4, 5, 6 and 7 functions remain unknown. Pin 9 is GND, pin 11 is 9V supply and pin 10 is the control voltage. Pin 12 is NO contact on the white relay on the picture. WP_20150702_13_27_04_Pro.jpg WP_20150702_17_10_31_Pro.jpg WP_20150702_17_11_09_Pro.jpg
    Please, can someone help?
    Thanks!
     
  2. R!f@@

    AAC Fanatic!

    Apr 2, 2009
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    Welcome to AAC

    Where is 350 Amp power switches.
     
  3. dejanm80

    Thread Starter New Member

    Jul 2, 2015
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    There is a thyristor module attached on the box. It is connected with the control board with the white connectors labeled as ST3 and ST4 on the second picture. The batteries should be connected on B+ and B- and the motor on 33/1 contact (the regulated output) and B-, first picture.
     
  4. dejanm80

    Thread Starter New Member

    Jul 2, 2015
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    Problem solved by chance :) the controller started when I connected wires 2, 5 and 6 to GND.
     
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