altafmirza988
- Jun 8, 2015
- 1
- Joined
- Jun 8, 2015
- Messages
- 1
Hi everyone.
Recently I got running machine with fault and trying to repair it. It switches on and everything seems to work fine (all the settings apart from motor) but when I press start button motor does not start and mcb switches off after few seconds showing E1 error on upper pcb. (E1 indicates motor or mcb problem). After pressing start button, LED (next to big capacitor) goes on. I have 300vdc on motor pinouts with motor disconnected but after few seconds it cutts off showing E1 error. When I connect motor I have about 6vdc and motor does not start showing E1. I have tested motor using 12vdc psu (as advised on some websites) and motor was working. I already replaced thyristor, IGBT and rectifier but still the same problem Any ideas where to start please?
Recently I got running machine with fault and trying to repair it. It switches on and everything seems to work fine (all the settings apart from motor) but when I press start button motor does not start and mcb switches off after few seconds showing E1 error on upper pcb. (E1 indicates motor or mcb problem). After pressing start button, LED (next to big capacitor) goes on. I have 300vdc on motor pinouts with motor disconnected but after few seconds it cutts off showing E1 error. When I connect motor I have about 6vdc and motor does not start showing E1. I have tested motor using 12vdc psu (as advised on some websites) and motor was working. I already replaced thyristor, IGBT and rectifier but still the same problem Any ideas where to start please?