4 Rockwell Automation Publication 22-TD001I-EN-P - June 2013
PowerFlex 4 and 40 AC Drives
Optimized Performance
•Removable MOV to ground provides trouble-free operation when used on ungrounded
distribution systems.
• A relay pre-charge limits inrush current.
• Integral brake transistor, available on all ratings (except no brake version), provides
dynamic braking capability with simple low cost brake resistors.
• DIP switch settable 24V DC sink or source control for control wiring flexibility.
• 150% overload for 60 seconds or 200% overload for 3 seconds provides robust overload
protection.
• Adjustable PWM frequency up to 16 kHz ensures quiet operation.
Sensorless Vector Performance
PowerFlex 4
• Drive automatically provides auto boost (IR
compensation) and slip compensation.
• Provides excellent speed regulation and high levels of
torque across the entire speed range of the drive, and
improved speed regulation even as loading increases.
Sensorless Vector Control
PowerFlex 40
• Sensorless Vector Control provides exceptional speed
regulation and very high levels of torque across the
entire speed range of the drive.
• The Autotune feature allows the PowerFlex 40 to adapt
to individual motor characteristics.
Performance
• This graph depicts the ability of a PowerFlex 40 drive to
accelerate into at least 150% load. A PowerFlex 4 will
perform similarly, but with a slightly higher acceleration
time.
• At 100% motor load, the drive will run the motor at
synchronous speed.
• Excellent current regulation.
• Linear acceleration.
• Best in class digital input response time and
repeatability.
AB PowerFlex 40 3Hp - High Speed
0.0
0.5
1.0
1.5
2.0
2.5
3.0
0 102030405060708090100
Frequency (HZ)
Torque (Per-Unit)
To Next Page
Loading...
Need help?
General
