nolabama
Senior Member
- Location
- new orleans la
I will try to be brief.
Are Allen Bradley Powerflex 700 drives able to be tuned to accept variable input powers. POCO is giving me single phase VAC between 495-501. After rectifiers VFD buss VDC is 802. Drives go into over voltage fault. Switch to standby power and input power is 471VAC. Drives function as advertised. This seems to be a rather low tolerance. I dont know if it matters or not, but the drives convert the single phase power into three phase. POCO is 255-260ish to ground, generator is 240ish to ground.
I need the drives to function on POCO power, not generator power, Duh.
I do have an open ticket with Allen Bradley - but I have not called them yet; this is a recurring issue with the POCO.
The result of the drives failing is a drawbridge stuck in the partially open position, ie closed to rail and water traffic. I dont need to be out bucking a transformer to solve this problem.
Are Allen Bradley Powerflex 700 drives able to be tuned to accept variable input powers. POCO is giving me single phase VAC between 495-501. After rectifiers VFD buss VDC is 802. Drives go into over voltage fault. Switch to standby power and input power is 471VAC. Drives function as advertised. This seems to be a rather low tolerance. I dont know if it matters or not, but the drives convert the single phase power into three phase. POCO is 255-260ish to ground, generator is 240ish to ground.
I need the drives to function on POCO power, not generator power, Duh.
I do have an open ticket with Allen Bradley - but I have not called them yet; this is a recurring issue with the POCO.
The result of the drives failing is a drawbridge stuck in the partially open position, ie closed to rail and water traffic. I dont need to be out bucking a transformer to solve this problem.