Rockwell Automation Publication 20P-TD001K-EN-P - January 2021
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PowerFlex DC Drive and Field Controller Technical Data
The PowerFlex DC Drive
The PowerFlex® DC drive (20P) provides digital control for precise speed and current regulation, easy programmability, extensive
diagnostics, and non-regenerative or regenerative operation. PowerFlex DC drives can run various applications, including extruder
operations, finishing, drawing, and coating. The PowerFlex DC drive can effectively control applications that exhibit shock loads, high inertia,
rapid acceleration and deceleration rates, or continuous regeneration. These features of the PowerFlex DC drive make it an excellent choice
for existing DC machinery upgrades. The compact design of this drive includes a fully contained power module and a common control
structure for the entire range of horsepower. And, to make connectivity even easier, the PowerFlex DC drive provides a standard DPI™
interface that is compatible with all PowerFlex DPI communication products.
The standard hardware consists of an open type enclosure, armature converter, regulated field converter for field weakening or economy
applications, and an advanced regulator with integrated DPI functionality. The standard I/O includes eight digital inputs, four digital outputs,
three analog inputs, two analog outputs, a DC tachometer, and encoder capability.
Optional I/O and feedback modules are available and are sold separately from the standard hardware offering. For more information, see
and
Feedback Option Kit (only for PowerFlex DC drives)
.
Drive Features
• Fast-acting
Current Limit
and
Voltage Regulation
result in maximum accelerate/decel without tripping.
•
High-speed analog inputs
improve drive response to torque or speed commands.
•
Programming flexibility
allows parameters to be linked within the drive.
•
Field-flashable firmware
through DPI interface.
•
Flying Start
delivers smooth and instantaneous connection into a rotating load, regardless of commanded direction, without the need
for any speed feedback.
•
Single-phase Regulated Field supply
(10 A, 14 A, 20 A, 40 A, and 70 A, depending on the drive size) standard on all frames.
•
Integral Process PI Control
replaces the need for a separate controller for a process loop.
•
TorqProve
™ helps assure control of the load when control is transferred between the drive and a mechanical brake.
•
Speed Regulation
- open-loop or closed-loop
- Armature Feedback provides a 2000:1 rpm speed range
- DC Tachometer Feedback provides up to 0.1% speed regulation
- Encoder Feedback provides up to 0.1% speed regulation for the tightest application requirements.
•
Torque Regulation
- open-loop or closed-loop
- Open-loop torque regulation provides ±5% regulation.
- Encoder Feedback provides ±1% regulation and the ability to hold full load at zero speed.
Packaging and Mounting
•
IP20, NEMA/UL Type Open
- For conventional mounting inside or outside a control cabinet.