Have you found fault or issue of B11 Error
Hey Leo, I find it very strange the difference you have between the 3 fases. I don't know if 0.7 Mohm is ok without using a megger.
Regards
Marcb
Hi, Mr. Antwerp, I measured the cable using multimeter and the reading as follows; U = 1.2 , V = 1.5 , W = 0.7 in Mega Ohm. Couldn't test the pump motor as it need to lift the battery box. Should i send for repair on the traction motor first. Need your advice. Regards Leo Jeffrey.
Hello Leo, You have to disconnect the power cables (U V W cables) from the motor or the controller side. Meassure with 1 wire of your multimeter on the outside of the motor and the other one on each power cables ( U V W cables).
I think it must be some Mega Ohm value. You can do the test with the pumpmotor on your troubled machine.
Regards
marcb
I do not have a megger set however i have look for an electrician who can conduct the megger test meanwhile if i measure by resistance, do i need to dismantle the circuit. appreciate for your reply. thanks and regards. Jeffrey Leo.
Hey Leo,
If you test it with a megger set to 500V it must be above 0,5M Ohm.
It's normal that the main contactor opens again when you have an error like B11.
Regards
Marcb
Thanks for your reply. May i know what should be the indicative values of the resistance ? I've change a new original main contactor and when i switch start, i notice that the contactor re-act contact and release immediately. May i know is this sequence is normal or any fault related ?
Ok it's an IGBT module type. I have in our workshop the same problem B11, we've controlled the isolation of the drive motor and found a problem of the stator isolation. If you don't have a megger, I think you can meassure the resistance of each fase to the outside of the motor. (compaire the values with the pumpmotor)
regards
Marcb
Thanks for your respond. The serial no.221AC8926. the IGBT module type CM600DU-5F 3 pieces & CM400DU-5F 3pieces Mitsubishi. I've change all 6 as well as the board comp IGBT.
I would control the isolation of the drive motor with a megger. Have you found a problem on one of the IGBT? Can you mention the serial number, because this model has got different systems.
Regards
Marcb