10/9/2016 3:47 PM | |
Posts: 7 Rating: (0) |
Dear Sir, We have a Motor 1200 Volts,480 Amps 60 Hz 600 KW. The drive used is in High low high configuration with 6.6 Kv input stepped down to 600 Volts .The drive output is given to stepup trafo to 1200 Volts & then fed to Motor. The drive could not be commissioned in V/F mode with transformer as recommended. It was working only in vector control mode.Here the operating V/F ratio was at 8 at Drive output viz 16 to the Motor side instead of 20 as per Motor Data.The Parameter back up in enclosed. However we had a failure of the motor & we were forced to use the drive at lower rating. Also we had to remove the stepup transformer in circuit.Hence again the drive was reprogrammed to 600 Volts 30 Hertz with control mode maintained as vector. The problem is see is that the V/F mode is not maintained at 20 instead it is at the same ratio in eariler mode of 8 . The parameter back up is enclosed for the new settings. Can you pls help why the V/F ration is low & how we can overcome this lower flux operation. Regards Sanjaya ------------------------------------------------------------------------------------------ AttachmentDrive With Transf & Vector Mode.zip (342 Downloads) |
Last edited by: Min_Moderator at: 10/10/2016 3:57:33 PMNew subject after splitting |
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10/9/2016 3:48 PM | |
Posts: 7 Rating: (0) |
The 2nd backup file attached
AttachmentDrive without Trafo & Vector Control Mode.zip (339 Downloads) |
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