StoneMachines
Plastic
- Joined
- Jan 28, 2012
- Location
- Ottawa,ON,Canada
Some used ABB 3 phase VFDs have come up for sale that seem like they might meet my requirements (my motors are 575v 10hp,2hp,2hp). After looking over the user manual (available here) I have two questions:
1 - I'll be supplying the VFD from residential 230v single phase, stepped up to 575v. The VFDs are rated for 575v 3 phase input. This fault caught my eye:
22 SUPPLY PHASE Ripple voltage in the DC link is too high.
Check for and correct:
• missing mains phase
• blown fuse.
The closest setting I found to ignore this fault was:
3023 WIRING FAULT 0=DISABLE, 1=ENABLE
Defines the drive response to cross wiring faults and to earth faults
detected when the drive is NOT running. When the drive is not running,
it monitors for:
• Improper connections of input power to the drive output (the drive can
display fault 35, OUTP WIRING if improper connections are detected).
• Earth faults (the drive can display fault 16, EARTH FAULT if an earth
fault is detected). Also, see parameter 3017 EARTH FAULT.
Note: Disabling wiring fault (earth fault) may void the warranty.
0 = DISABLE – No response to either of the above monitoring results.
1 = ENABLE – Displays a fault when this monitoring detects problems
But I don't think that would do it. Does anyone have any experience using VFDs that have input phase detection and feeding them single phase?
2 - This VFD is marketed toward HVAC users for fan/pump control and has a bunch of built in settings to help with setting up for this and the associated energy savings. However I'm pretty sure my requirements (VFD powering motor on saw) that I would want a VFD that can supply a constant torque load. Which after reading this thread I think I understand that really as long as the VFD can supply the rated amps for the motor at all speeds I should be OK (and I up size the VFD for feeding it single phase power).
Reading the manual I found the following parameter:
2601 FLUX OPT ENABLE 0=OFF, 1=ON
Changes the magnitude of the flux depending on the actual load. Flux
Optimization can reduce the total energy consumption and noise, and it
should be enabled for drives that usually operate below nominal load.
0 = OFF – Disables the feature.
1 = ON – Enables the feature.
I assume if I wanted constant torque below nameplate RPM I would want this off?
Under ratings the manual has:
Nominal rating (10% overload capability)
I2N continuous rms current. 10% overload is allowed for one
minute every ten minutes through the whole speed
range.
PN typical motor power. The kilowatt power ratings apply to
most IEC, 4-pole motors. The horsepower ratings apply
to most 4-pole NEMA motors.
So no reason it wouldn't supply rated current through all speeds?
Thanks
Greg.
1 - I'll be supplying the VFD from residential 230v single phase, stepped up to 575v. The VFDs are rated for 575v 3 phase input. This fault caught my eye:
22 SUPPLY PHASE Ripple voltage in the DC link is too high.
Check for and correct:
• missing mains phase
• blown fuse.
The closest setting I found to ignore this fault was:
3023 WIRING FAULT 0=DISABLE, 1=ENABLE
Defines the drive response to cross wiring faults and to earth faults
detected when the drive is NOT running. When the drive is not running,
it monitors for:
• Improper connections of input power to the drive output (the drive can
display fault 35, OUTP WIRING if improper connections are detected).
• Earth faults (the drive can display fault 16, EARTH FAULT if an earth
fault is detected). Also, see parameter 3017 EARTH FAULT.
Note: Disabling wiring fault (earth fault) may void the warranty.
0 = DISABLE – No response to either of the above monitoring results.
1 = ENABLE – Displays a fault when this monitoring detects problems
But I don't think that would do it. Does anyone have any experience using VFDs that have input phase detection and feeding them single phase?
2 - This VFD is marketed toward HVAC users for fan/pump control and has a bunch of built in settings to help with setting up for this and the associated energy savings. However I'm pretty sure my requirements (VFD powering motor on saw) that I would want a VFD that can supply a constant torque load. Which after reading this thread I think I understand that really as long as the VFD can supply the rated amps for the motor at all speeds I should be OK (and I up size the VFD for feeding it single phase power).
Reading the manual I found the following parameter:
2601 FLUX OPT ENABLE 0=OFF, 1=ON
Changes the magnitude of the flux depending on the actual load. Flux
Optimization can reduce the total energy consumption and noise, and it
should be enabled for drives that usually operate below nominal load.
0 = OFF – Disables the feature.
1 = ON – Enables the feature.
I assume if I wanted constant torque below nameplate RPM I would want this off?
Under ratings the manual has:
Nominal rating (10% overload capability)
I2N continuous rms current. 10% overload is allowed for one
minute every ten minutes through the whole speed
range.
PN typical motor power. The kilowatt power ratings apply to
most IEC, 4-pole motors. The horsepower ratings apply
to most 4-pole NEMA motors.
So no reason it wouldn't supply rated current through all speeds?
Thanks
Greg.