I'llFixIt
Plastic
- Joined
- Feb 19, 2014
- Location
- Michigan, USA
Hi All,
Might be knocking on the wrong door here but this is my situation:
I have 480VAC@60Hz to an AB Powerflex 755 drive in voltage adjust mode, outputting 400VAC@50Hz. The 400VAC is unusual, but is required. All components in the panel and on the machine are rated for this power.
My drive is having no problem powering a programming port (European style 200V plug for computers) and a couple of fan motors. But it refuses to power up a 24VDC power supply. Power supply part number is DN4033, it is 380-480VAC 50/60Hz input, 24VDC 10Amp output. Whenever I enable the drive with the power supply connected, the drive immediately quits displaying a hardware overcurrent fault. The drive is rated for 11 amps continuous, 26 Amps peak...the power supply is rated for peak inrush current of 4 Amps. There's no way it is actually drawing more current than the VFD can handle. Power supply is verified as still good/not smoked by hooking it directly to mains voltage (480VAC @60Hz).
No wiring problems, no obvious gotcha's in drive parameters....
Any ideas are welcomed and appreciated.
-Justin
Might be knocking on the wrong door here but this is my situation:
I have 480VAC@60Hz to an AB Powerflex 755 drive in voltage adjust mode, outputting 400VAC@50Hz. The 400VAC is unusual, but is required. All components in the panel and on the machine are rated for this power.
My drive is having no problem powering a programming port (European style 200V plug for computers) and a couple of fan motors. But it refuses to power up a 24VDC power supply. Power supply part number is DN4033, it is 380-480VAC 50/60Hz input, 24VDC 10Amp output. Whenever I enable the drive with the power supply connected, the drive immediately quits displaying a hardware overcurrent fault. The drive is rated for 11 amps continuous, 26 Amps peak...the power supply is rated for peak inrush current of 4 Amps. There's no way it is actually drawing more current than the VFD can handle. Power supply is verified as still good/not smoked by hooking it directly to mains voltage (480VAC @60Hz).
No wiring problems, no obvious gotcha's in drive parameters....
Any ideas are welcomed and appreciated.
-Justin