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1. Product Overview

The Allen-Bradley 20P41AD4P1RA0NNN is a compact regenerative DC drive belonging to the PowerFlex DC series. It is designed for industrial applications requiring controlled operation of DC motors in the approximately 2 HP class, with a rated DC output current of 4.1 A.

The drive is designed for a 460/480 VAC class, three-phase AC input and provides a controlled DC output for the motor armature. Its regenerative, four-quadrant architecture allows the motor to operate in both motoring and regenerative conditions, making the drive useful for applications that require controlled acceleration, deceleration, reversing, or braking.

The standard configuration uses a 6-pulse input, single-phase regulated field supply, IP20 / NEMA/UL Type Open construction, and conformal coating. The catalog configuration also specifies a blank plate rather than a HIM and no communication module.

For its physical size, the 20P41AD4P1RA0NNN uses Frame A construction. The approximate drive dimensions are 267 mm wide × 359 mm high × 287 mm deep, and the drive weight for the 4.1 A Frame A regenerative configuration is approximately 11 kg.

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2. Brand and Product Series

Item	Specification
Brand	Allen-Bradley
Product Series	PowerFlex DC
Product Type	Digital DC Drive
Catalog Number	20P41AD4P1RA0NNN
Drive Configuration	Regenerative
Operating Mode	Four-quadrant
Input Voltage Class	460/480 VAC
Input Phase	3-phase
Input Type	6-pulse
Output Current	4.1 A
Motor Rating	2 HP
Motor Power	Approximately 1.5 kW
Frame Size	Frame A
Field Supply	Single-phase regulated
Enclosure	IP20, NEMA/UL Type Open
Conformal Coating	Yes
HIM	Blank plate / no HIM
Communication Module	None in stated configuration
Approximate Dimensions	267 × 359 × 287 mm, W × H × D
Approximate Weight	11 kg
Primary Application	Industrial DC motor control

The product family is PowerFlex DC, while the specific configuration is a 480 VAC-class regenerative DC drive. The product-selection data places the 4.1 A model at 2 HP / approximately 1.5 kW and assigns it to Frame A.

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3. Main Technical Parameters

Parameter	20P41AD4P1RA0NNN
Brand	Allen-Bradley
Series	PowerFlex DC
Catalog Number	20P41AD4P1RA0NNN
Drive Type	Digital regenerative DC drive
Input Voltage	460 VAC nominal / 480 VAC class
Input Frequency	50/60 Hz
Input Phase	3-phase
Input Current	Approximately 3.3 A
Input Type	6-pulse
DC Output Voltage	Up to approximately 500 VDC
Rated DC Output Current	4.1 A
Normal Duty Motor Rating	2 HP
Approximate Motor Power	1.5 kW
1-Minute Overload Current	6.2 A
3-Second Overload Current	8.2 A
Motor Operation	Four-quadrant regenerative
Frame Size	Frame A
Field Supply	Single-phase regulated
Field Input	460 VAC, 50/60 Hz, up to 10 A
Field Output	Up to approximately 360 VDC, 10 A
Regulator Power	115/230 VAC, single-phase
Regulator Power Current	Approximately 1.0/0.5 A
I/O Supply	24 VDC standard
Enclosure	IP20
Enclosure Type	NEMA/UL Type Open
Conformal Coating	Yes
HIM	Blank plate / no HIM
Communication Module	None in stated configuration
Approx. Width	267 mm
Approx. Height	359 mm
Approx. Depth	287 mm
Approx. Dimensions	267 × 359 × 287 mm
Approx. Weight	11 kg
Mounting Orientation	Vertical
Typical Application	Industrial DC motor speed and torque control

The drive nameplate data identifies a 460 VAC, 50/60 Hz three-phase input, approximately 3.3 A input current, 500 VDC / 4.1 A regenerative output, 2 HP rating, 6.2 A one-minute overload, and 8.2 A three-second overload. The field circuit is separately specified as a regulated single-phase supply.

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4. Product Introduction

The 20P41AD4P1RA0NNN is intended for applications where a compact industrial DC drive is required to regulate the speed and torque of a DC motor.

Although its 2 HP rating places it toward the smaller end of the PowerFlex DC range, it uses the same general control architecture associated with the larger PowerFlex DC regenerative drives.

This makes the model useful in machines where a small DC motor still requires more sophisticated control than a simple contactor-based starter.

The drive provides controlled motor acceleration and deceleration while also supporting regenerative operation.

This is particularly useful when the motor needs to change direction, decelerate under controlled conditions, or operate with a mechanical load that can drive the motor.

The 20P41AD4P1RA0NNN is therefore not simply a basic DC speed controller.

It is a compact industrial drive designed to become part of a complete machine-control system.

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5. 4.1 A Output Capacity

The most important electrical rating of the model is its 4.1 A DC output current.

The current rating determines the size of DC motor that can be operated by the drive.

The 4.1 A configuration corresponds to approximately 2 HP, or approximately 1.5 kW, under the specified normal-duty rating.

For a small industrial DC motor, this provides sufficient capacity for a variety of machine functions including auxiliary drives, small conveyors, feeders, positioning mechanisms, small winding equipment, and other process machinery.

The current rating should always be compared with the motor nameplate armature current rather than selecting the drive only from the horsepower value.

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6. 2 HP Motor Rating

The drive is rated for a 2 HP motor under the specified normal-duty classification.

Two horsepower is approximately 1.5 kW.

This makes the drive suitable for relatively compact industrial machines.

Typical motors in this range can be used for small material-handling mechanisms, feeders, compact processing equipment, small winders, auxiliary machine functions, and other equipment where a DC motor is preferred.

The 2 HP rating should not be interpreted as meaning that every 2 HP motor is automatically compatible.

The actual motor armature voltage, armature current, field requirements, speed range, feedback arrangement, and duty cycle should be checked before installation.

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7. 460/480 VAC Three-Phase Input

The 20P41AD4P1RA0NNN is designed for a 460 VAC class three-phase input.

The nameplate data identifies the input as 460 VAC, 50/60 Hz, three-phase, with an input current of approximately 3.3 A for the stated configuration.

The three-phase AC input is converted by the drive into controlled DC power for the motor armature.

This makes the product suitable for industrial electrical systems where 460/480 VAC three-phase power is available.

For installation, the actual supply voltage and frequency should be verified against the drive and the applicable electrical requirements.

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8. 6-Pulse Input

The drive uses a 6-pulse input configuration.

A six-pulse converter is a common industrial AC-to-DC power-conversion arrangement.

For a DC drive, the incoming three-phase AC power is converted into a controlled DC output that supplies the motor armature.

This architecture has been widely used in industrial DC drive systems and is also used across the larger PowerFlex DC family.

The 6-pulse arrangement provides a straightforward and established power-conversion structure for industrial DC motor control.

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9. Four-Quadrant Regenerative Operation

One of the most important features of the 20P41AD4P1RA0NNN is its regenerative four-quadrant operating capability.

Four-quadrant operation allows the drive to manage both positive and negative motor speed as well as positive and negative torque conditions.

In practical machine terms, this means the drive can support:

• Forward motoring.
• Forward regeneration.
• Reverse motoring.
• Reverse regeneration.

This capability is valuable when the machine requires controlled reversing or frequent acceleration and deceleration.

It also provides a controlled method of handling mechanical energy during regenerative operation.

The product selection information specifically identifies this model as a four-quadrant regenerative drive.

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10. Regenerative Braking

Regenerative braking is particularly useful when a motor is required to slow down under controlled conditions.

When the motor decelerates, the mechanical system can drive the motor.

Under this condition, the motor can act as a generator.

The regenerative drive controls this condition rather than simply disconnecting the motor.

This is useful for machines that have:

• High rotational inertia.
• Frequent stopping cycles.
• Frequent reversing.
• Controlled deceleration requirements.
• Mechanical loads capable of driving the motor.

For a small 2 HP machine, the amount of regenerative energy is considerably lower than in a large industrial drive, but the operating principle remains important.

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11. Frame A Construction

The 20P41AD4P1RA0NNN is a Frame A PowerFlex DC drive.

Frame size is an important mechanical classification because it determines the approximate physical dimensions, mounting arrangement, cooling arrangement, and service space.

The Frame A PowerFlex DC drive dimensions are approximately:

• Width: 267 mm.
• Height: 359 mm.
• Depth: 287 mm.

The Frame A mechanical envelope is shared across a number of smaller PowerFlex DC drive ratings, allowing different current ratings to use a common physical platform.

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12. Dimensions and Weight

The approximate physical dimensions of the 20P41AD4P1RA0NNN are 267 × 359 × 287 mm, corresponding approximately to width × height × depth.

The drive itself weighs approximately 11 kg.

The corresponding packaged weight is approximately 13 kg, which is useful when planning transportation or handling.

For cabinet design, the actual mounting clearances should be considered in addition to the basic product dimensions.

The drive needs adequate space for electrical connections, airflow, inspection, and service access.

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13. IP20 / NEMA/UL Type Open Enclosure

The product uses an IP20, NEMA/UL Type Open enclosure.

This means the drive is intended to be installed as part of a suitable electrical cabinet or protected industrial enclosure.

It should not be treated as an outdoor, washdown, or weatherproof product.

The enclosure in which the drive is installed should provide the environmental protection required by the application.

Cabinet design should also consider dust, moisture, vibration, ambient temperature, airflow, and access requirements.

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14. Conformal Coating

The specified configuration includes conformal coating.

Conformal coating provides additional protection to electronic assemblies against environmental contamination.

This can be useful in industrial environments where airborne dust, humidity, or other contaminants may be present.

However, conformal coating does not eliminate the need for a properly designed electrical enclosure.

The overall installation still needs appropriate environmental protection and thermal management.

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15. Regulated Field Supply

The drive incorporates a single-phase regulated field supply.

The nameplate information identifies a field input of up to approximately 460 VAC, 50/60 Hz, single-phase, with an output of approximately 360 VDC, up to 10 A for the field supply circuit.

Field control is important in DC motor applications because the field affects the motor’s operating characteristics.

The armature and field systems therefore need to be considered together when configuring a DC motor drive.

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16. Regulator Power

The product nameplate also specifies regulator power from 115/230 VAC, single-phase, with approximately 1.0/0.5 A values associated with the respective voltage levels.

This auxiliary power arrangement supports the drive’s control electronics.

When designing the control cabinet, the regulator supply should be considered separately from the main motor power circuit.

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17. Overload Capability

The model provides overload capacity beyond its continuous 4.1 A rating.

The documented nameplate values identify approximately:

Overload Condition	Current
Continuous / Rated Output	4.1 A
1-Minute Overload	6.2 A
3-Second Overload	8.2 A

This capability is useful for applications where the motor needs additional current for short-duration acceleration or transient load conditions.

The overload rating does not mean that the motor can continuously operate at the overload value.

The overload duration and operating conditions must remain within the drive’s specified limits.

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18. Product Applications

The 20P41AD4P1RA0NNN can be used in a variety of small and medium industrial machine functions where a controlled DC motor is required.

Typical applications include:

• Small conveyors.
• Feeders.
• Roll drives.
• Small winding systems.
• Small unwinding systems.
• Packaging machinery.
• Material-handling equipment.
• Machine tools.
• Small processing machines.
• Auxiliary machine drives.
• Speed-controlled production equipment.
• Small reversing mechanisms.
• Retrofit DC motor applications.

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19. Small Conveyor Applications

A small industrial conveyor can benefit from controlled DC motor operation when precise starting and stopping are required.

The drive can provide controlled acceleration rather than applying full motor torque immediately.

This can reduce mechanical shock to belts, couplings, gears, and transported materials.

If the conveyor requires controlled deceleration or reversing, the regenerative four-quadrant architecture provides additional control capability.

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20. Feeder Applications

Feeders often require controlled speed.

For example, a machine may need to feed material at a consistent rate into another production stage.

The drive can regulate motor speed while the machine controller provides the operating reference.

A DC motor can also provide useful torque characteristics at low speed, depending on the motor design and drive configuration.

This makes the product suitable for compact industrial feeding equipment.

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21. Winding Applications

Small winding systems can also make use of the 20P41AD4P1RA0NNN.

A winding machine may need to maintain a controlled rotational speed while material is wound onto a spool or roll.

During acceleration, the drive provides motor torque.

During controlled deceleration, the drive can manage regenerative conditions.

For machines requiring accurate speed or tension control, feedback can be incorporated into the overall control system.

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22. Unwinding Applications

An unwinding machine can require controlled braking torque.

When material is pulled from a roll, the roll can tend to accelerate.

The motor may therefore need to operate in a braking or regenerative condition.

Four-quadrant DC drive operation is well suited to this type of control philosophy.

For small roll systems, a 2 HP-class drive can provide a compact solution when the motor and load requirements fall within the drive ratings.

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23. Packaging Machinery

Packaging equipment often contains small motors for feeders, rollers, conveyors, and other mechanical sections.

Some machines require smooth acceleration and controlled stopping to prevent product movement or mechanical shock.

A compact regenerative DC drive can provide controlled motor operation while also supporting reversing where required.

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24. Printing and Converting Equipment

Small printing and converting machines may use DC motors for rollers, feeders, tension systems, or auxiliary mechanisms.

The drive’s ability to regulate speed and support feedback-based control can be useful in applications where consistent process speed is important.

For larger machines, larger PowerFlex DC models from the same family may be required.

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25. Machine Tool Applications

The 20P41AD4P1RA0NNN can also be considered for machine-tool auxiliary functions where a DC motor is already installed.

The regenerative architecture can be useful where controlled stopping or reversing is required.

When used in older equipment, the drive may provide a practical modernization option while allowing the existing DC motor to remain in service, subject to motor condition and compatibility.

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26. Industrial Retrofit Applications

One particularly relevant application is the replacement of an older DC drive.

Many industrial facilities have machines that were designed around DC motors.

Replacing the entire motor and mechanical system with an AC motor can be expensive and mechanically disruptive.

A PowerFlex DC drive can provide an alternative approach when the existing DC motor remains suitable.

The 20P41AD4P1RA0NNN is particularly useful when the existing motor is in the 2 HP range and the machine requires regenerative four-quadrant operation.

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27. Main Product Advantages

Compact Frame A Design

The Frame A construction gives the drive a relatively compact physical footprint for an industrial DC drive.

With approximate dimensions of 267 × 359 × 287 mm, it can be incorporated into relatively compact electrical cabinets.

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2 HP Motor Capacity

The 2 HP rating makes the model suitable for smaller industrial DC motors.

This allows the same PowerFlex DC architecture to be used across a wide range of motor sizes.

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4.1 A Output Rating

The 4.1 A continuous output rating is appropriate for the corresponding 2 HP motor class.

It also provides short-duration overload capacity for acceleration and transient conditions.

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Four-Quadrant Operation

Four-quadrant operation provides a major functional advantage compared with a simple one-direction DC controller.

The drive can support both motoring and regenerative conditions in both directions.

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Regenerative Braking

Regenerative operation is useful for machines that need controlled braking and deceleration.

This can be particularly valuable in winding, unwinding, reversing, and cyclic machinery.

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Regulated Field Supply

The integrated regulated field supply simplifies the overall DC motor-control arrangement.

It provides a controlled field circuit as part of the drive system.

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Industrial Enclosure Design

The IP20 / NEMA/UL Type Open construction is appropriate for installation inside a suitable industrial electrical cabinet.

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Conformal-Coated Electronics

The conformal-coated configuration provides additional protection to electronic assemblies in appropriate industrial environments.

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Broad Family Compatibility

The 20P41AD4P1RA0NNN belongs to a broad PowerFlex DC family that extends from small 4.1 A drives to very high-current industrial drives.

This makes the product family useful for facilities with multiple DC motor sizes.

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28. Five Recommended Same-Series Models

The following models are from the same PowerFlex DC regenerative 480 VAC-class family.

They are especially useful when comparing different motor sizes while maintaining the same basic drive architecture.

Model	Output Current	Motor Rating	Motor Power	Frame	Input	Operation	Approx. Dimensions	Approx. Weight
20P41AD6P0RA0NNN	6 A	3 HP	2.2 kW	A	460/480 VAC, 3 PH	Four-quadrant regenerative	Approx. 267 × 359 × 287 mm	Approx. 11 kg
20P41AD010RA0NNN	10 A	5 HP	3.7 kW	A	460/480 VAC, 3 PH	Four-quadrant regenerative	Approx. 267 × 359 × 287 mm	Approx. 11 kg
20P41AD014RA0NNN	14 A	7.5 HP	5.5 kW	A	460/480 VAC, 3 PH	Four-quadrant regenerative	Approx. 267 × 359 × 287 mm	Approx. 11 kg
20P41AD019RA0NNN	19 A	10 HP	7.5 kW	A	460/480 VAC, 3 PH	Four-quadrant regenerative	Approx. 267 × 359 × 287 mm	Approx. 11 kg
20P41AD027RA0NNN	27 A	15 HP	11 kW	A	460/480 VAC, 3 PH	Four-quadrant regenerative	Approx. 267 × 359 × 287 mm	Approx. 11 kg

These five models are directly related to the 20P41AD4P1RA0NNN and are all part of the same regenerative PowerFlex DC selection. The product-selection tables identify the 4.1, 6, 10, 14, 19, and 27 A models as Frame A units.

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29. Same-Series Model Comparison

Model	Current	HP	kW	Frame	Approx. Dimensions	Approx. Weight	Typical Selection
20P41AD4P1RA0NNN	4.1 A	2 HP	1.5 kW	A	267 × 359 × 287 mm	11 kg	Base 2 HP class
20P41AD6P0RA0NNN	6 A	3 HP	2.2 kW	A	267 × 359 × 287 mm	11 kg	3 HP class
20P41AD010RA0NNN	10 A	5 HP	3.7 kW	A	267 × 359 × 287 mm	11 kg	5 HP class
20P41AD014RA0NNN	14 A	7.5 HP	5.5 kW	A	267 × 359 × 287 mm	11 kg	7.5 HP class
20P41AD019RA0NNN	19 A	10 HP	7.5 kW	A	267 × 359 × 287 mm	11 kg	10 HP class
20P41AD027RA0NNN	27 A	15 HP	11 kW	A	267 × 359 × 287 mm	11 kg	15 HP class

The important point is that the first several current ratings can use the same Frame A physical platform.

As motor power increases, the electrical rating changes while the basic mechanical frame remains within the Frame A range.

This makes the family convenient for facilities that operate multiple small DC motors.

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30. Five More Closely Related High-Power Models

For applications requiring more than the 2 HP capacity of the 20P41AD4P1RA0NNN, larger models from the same PowerFlex DC regenerative family can be considered.

Model	Output Current	Motor Rating	Motor Power	Frame	Input	Approx. Dimensions	Approx. Weight
20P41AD129RA0NNN	129 A	75 HP	56 kW	A	460/480 VAC, 3 PH	Approx. 267 × 359 × 287 mm	Approx. 12 kg
20P41AD167RA0NNN	167 A	100 HP	75 kW	B	460/480 VAC, 3 PH	Approx. 311 × 388 × 350 mm	Approx. 25.5 kg
20P41AD250RA0NNN	250 A	150 HP	112 kW	B	460/480 VAC, 3 PH	Approx. 311 × 388 × 350 mm	Approx. 29.5 kg
20P41AD330RA0NNN	330 A	200 HP	149 kW	B	460/480 VAC, 3 PH	Approx. 311 × 388 × 350 mm	Approx. 32 kg
20P41AD412RA0NNN	412 A	250 HP	187 kW	B	460/480 VAC, 3 PH	Approx. 311 × 388 × 350 mm	Approx. 32 kg

These models demonstrate how the PowerFlex DC family scales from compact Frame A units into larger Frame B configurations.

The 129 A unit remains within Frame A, while the 167 A and larger models shown here move into Frame B. The current and motor-power progression is part of the standard PowerFlex DC regenerative selection structure.

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31. Five Popular Related Models From the Same Brand

The following five models are popular products from other PowerFlex families.

They are useful for comparison, but they should not be treated as direct replacements for the 20P41AD4P1RA0NNN because they are generally designed for AC motor control rather than this specific regenerative DC motor application.

Model	Product Family	Drive Type	Voltage Class	Approx. Current / Power Class	Typical Motor	Approx. Dimensions	Approx. Weight
25B-D017N114	PowerFlex 525	AC variable-frequency drive	480 VAC class	Approx. 17 A / 10 HP class	AC motor	Configuration-dependent	Configuration-dependent
25B-D030N114	PowerFlex 525	AC variable-frequency drive	480 VAC class	Approx. 30 A / 15 HP class	AC motor	Configuration-dependent	Configuration-dependent
20G11ND077AA0NNNNN	PowerFlex 755	AC drive	480 VAC class	Approx. 77 A / 50 HP class	AC motor	Configuration-dependent	Configuration-dependent
20G11ND156AA0NNNNN	PowerFlex 755	AC drive	480 VAC class	Approx. 156 A / 100 HP class	AC motor	Configuration-dependent	Configuration-dependent
22F-D060N103	PowerFlex 4M	Compact AC drive	480 VAC class	Approx. 6 A / 3 HP class	AC motor	Configuration-dependent	Configuration-dependent

These products are related at the brand and industrial-drive level, but they use different motor-control technologies.

When an existing machine has a DC motor, the same-series PowerFlex DC models are generally the more directly related products to evaluate.

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32. Difference Between PowerFlex DC and PowerFlex AC Products

The distinction between DC and AC drive families is important.

The 20P41AD4P1RA0NNN is designed around a DC motor system.

The motor has an armature circuit and a field circuit, and the drive manages these electrical systems as part of the motor-control process.

An AC variable-frequency drive operates differently.

It controls an AC motor by controlling the electrical characteristics supplied to the motor.

Therefore, replacing a DC drive with an AC drive generally involves much more than matching horsepower.

The motor, coupling, feedback device, braking arrangement, control wiring, PLC program, mechanical characteristics, and machine operating sequence may all need to be evaluated.

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33. Motor Selection and Matching

The most important information for selecting the drive is the motor nameplate.

The following motor information should be checked:

Motor Parameter	Why It Matters
Armature Voltage	Must be compatible with the drive output range
Armature Current	Must be within the drive current capability
Motor HP	Establishes the general power class
Motor kW	Provides metric power reference
Rated Speed	Determines operating range
Field Voltage	Required for field-supply configuration
Field Current	Important for field supply capacity
Feedback Type	Determines speed-feedback requirements
Duty Cycle	Determines thermal and overload requirements
Acceleration Time	Affects required current and torque
Deceleration Time	Affects regenerative operation
Reversing Requirement	Determines four-quadrant operating requirements

A motor should not be selected solely because its horsepower appears to match the drive.

The actual armature current is particularly important.

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34. Cabinet Installation

The 20P41AD4P1RA0NNN has an approximate physical envelope of 267 × 359 × 287 mm.

The cabinet designer should allow additional space around the drive for ventilation, cable routing, terminal access, inspection, and maintenance.

The drive should be installed in an appropriate vertical orientation.

Airflow around the unit should not be obstructed.

The cabinet should also be designed to keep the drive within the applicable ambient-temperature range.

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35. Cooling and Thermal Management

Although the 20P41AD4P1RA0NNN is a relatively small DC drive, thermal management remains important.

The drive converts electrical energy and therefore produces heat during operation.

The cabinet should provide adequate airflow and heat dissipation.

When multiple drives are installed in the same enclosure, the combined heat load should be considered.

A cabinet that is physically large enough for the drive may still be thermally unsuitable if heat cannot escape effectively.

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36. Control Wiring

The control wiring should be kept organized and separated appropriately from high-current power wiring.

This is particularly important when the system uses analog speed references, feedback signals, or other low-level control signals.

Proper grounding, shielding, cable routing, and termination can help reduce electrical interference.

A clean control-wiring arrangement also makes commissioning and future maintenance easier.

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37. Feedback and Speed Regulation

Feedback can be particularly useful when the machine requires accurate speed control.

For example, a small winding machine may need the motor to maintain a stable speed despite changing mechanical load.

A feeder may need consistent material movement.

A roller may need synchronized operation with another machine section.

In these situations, feedback can be incorporated into the overall control architecture.

The actual feedback device should be selected according to the motor and machine requirements.

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38. Retrofit Use

The 20P41AD4P1RA0NNN can be useful for upgrading older industrial machines that already use small DC motors.

A retrofit can sometimes retain:

• The existing DC motor.
• The existing mechanical coupling.
• Existing machine gearing.
• Existing mechanical structure.
• Existing process equipment.

The drive itself can then be modernized while maintaining the basic mechanical design.

However, the condition of the existing motor should be checked before installing a replacement drive.

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39. Maintenance Considerations

Maintenance should include inspection of the drive enclosure, cooling paths, wiring, terminals, motor connections, field circuit, and feedback system.

The cabinet should be kept free from excessive dust and contamination.

Power connections should be checked according to the applicable maintenance procedures.

The motor should also be inspected.

For a DC motor, brushes, commutator condition, bearings, cooling, insulation, and field windings can all influence the overall reliability of the system.

A healthy drive cannot compensate for a severely deteriorated motor.

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40. Typical Industrial Machine Types

The 20P41AD4P1RA0NNN can be considered for:

Machine Type	Typical Drive Function
Small Conveyor	Speed control and controlled starting
Feeder	Controlled material feed
Roller Drive	Constant or adjustable speed
Small Winder	Speed and torque regulation
Small Unwinder	Controlled braking
Packaging Machine	Roller or feeder control
Printing Auxiliary	Roller or feed control
Machine Tool	Auxiliary DC motor control
Material Handling	Speed and reversing control
Process Machinery	Continuous speed regulation
Retrofit Machine	Replacement of older DC drive
Small Reversing Machine	Four-quadrant operation

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41. Advantages for Winding Applications

A winding machine may experience changing roll diameter.

As the roll grows, the motor speed and torque requirements change.

The drive can regulate motor operation while the machine controller adjusts the speed or torque reference.

During stopping or deceleration, regenerative operation can help manage the energy associated with the rotating roll.

For a small winding system, the 2 HP capacity can provide a compact control solution when the motor requirements fall within the drive rating.

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42. Advantages for Unwinding Applications

Unwinding equipment can require controlled braking.

The motor may need to resist the tendency of the roll to accelerate as material is pulled away.

The four-quadrant regenerative architecture provides a means of controlling this condition.

This makes the drive suitable for small unwinding applications where controlled torque is required.

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43. Advantages for Reversing Applications

Some machines need to operate in both directions.

Examples include certain feeders, rollers, positioning systems, machine tools, and handling mechanisms.

Four-quadrant operation allows the drive to transition between forward and reverse operating conditions while managing the associated motoring and regenerative states.

This provides more flexibility than a basic one-direction DC controller.

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44. Product Selection Within the PowerFlex DC Family

The 20P41AD4P1RA0NNN is the smallest 460/480 VAC regenerative model in the standard selection shown for this family.

The progression begins at approximately:

4.1 A → 6 A → 10 A → 14 A → 19 A → 27 A → 35 A → 45 A → 52 A → 73 A → 86 A → 100 A → 129 A → 167 A → 207 A → 250 A → 330 A → 412 A → 495 A → 667 A and beyond.

This provides a very broad range of current and motor-power ratings.

The family therefore covers applications from relatively small industrial DC motors through very large high-power DC motor systems.

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45. PowerFlex DC Model Progression

Model	Output Current	HP Class	kW Class	Frame
20P41AD4P1RA0NNN	4.1 A	2 HP	1.5 kW	A
20P41AD6P0RA0NNN	6 A	3 HP	2.2 kW	A
20P41AD010RA0NNN	10 A	5 HP	3.7 kW	A
20P41AD014RA0NNN	14 A	7.5 HP	5.5 kW	A
20P41AD019RA0NNN	19 A	10 HP	7.5 kW	A
20P41AD027RA0NNN	27 A	15 HP	11 kW	A
20P41AD035RA0NNN	35 A	20 HP	15 kW	A
20P41AD045RA0NNN	45 A	25 HP	18.5 kW	A
20P41AD052RA0NNN	52 A	30 HP	22 kW	A
20P41AD073RA0NNN	73 A	40 HP	30 kW	A
20P41AD086RA0NNN	86 A	50 HP	37 kW	A
20P41AD100RA0NNN	100 A	60 HP	45 kW	A
20P41AD129RA0NNN	129 A	75 HP	56 kW	A
20P41AD167RA0NNN	167 A	100 HP	75 kW	B
20P41AD207RA0NNN	207 A	125 HP	93 kW	B
20P41AD250RA0NNN	250 A	150 HP	112 kW	B
20P41AD330RA0NNN	330 A	200 HP	149 kW	B
20P41AD412RA0NNN	412 A	250 HP	187 kW	B
20P41AD495RA0NNN	495 A	300 HP	224 kW	C
20P41AD667RA0NNN	667 A	400 HP	298 kW	C

The model progression illustrates how the family scales from the small 4.1 A model to much larger industrial regenerative drives.

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46. Detailed Product Specification Summary

Specification	Details
Brand	Allen-Bradley
Product Series	PowerFlex DC
Product Family	PowerFlex Digital DC Drive
Model / Catalog Number	20P41AD4P1RA0NNN
Product Category	Regenerative DC Drive
Input Voltage	460 VAC nominal / 480 VAC class
Input Frequency	50/60 Hz
Input Phase	3-phase
Input Current	Approx. 3.3 A
Input Type	6-pulse
DC Output	Up to approximately 500 VDC
Continuous Output Current	4.1 A
1-Minute Overload	6.2 A
3-Second Overload	8.2 A
Motor Rating	2 HP
Motor Power	Approx. 1.5 kW
Operation	Four-quadrant regenerative
Frame	A
Field Supply	Single-phase regulated
Field Input	460 VAC, 50/60 Hz
Field Output	Up to approximately 360 VDC
Regulator Power	115/230 VAC, 1-phase
I/O Supply	24 VDC standard
Enclosure	IP20
Enclosure Type	NEMA/UL Type Open
Conformal Coating	Yes
HIM	Blank plate / no HIM
Communication Module	None in stated configuration
Approx. Width	267 mm
Approx. Height	359 mm
Approx. Depth	287 mm
Approx. Dimensions	267 × 359 × 287 mm
Drive Weight	Approx. 11 kg
Packaged Weight	Approx. 13 kg
Main Application	Industrial DC motor control
Typical Motor Class	2 HP DC motor
Braking	Regenerative
Control Type	Digital DC motor control

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47. Product Advantages at a Glance

Feature	Practical Benefit
4.1 A output	Suitable for small industrial DC motors
2 HP rating	Supports approximately 1.5 kW motor applications
Four-quadrant control	Supports forward/reverse motoring and regeneration
Regenerative braking	Provides controlled deceleration capability
460/480 VAC input	Fits common industrial three-phase power systems
6-pulse input	Established industrial AC/DC conversion architecture
Frame A	Compact mechanical platform
IP20 enclosure	Suitable for protected cabinet installation
Conformal coating	Additional electronic protection
Regulated field supply	Supports controlled DC motor field operation
24 VDC I/O	Convenient integration with industrial control systems
Overload capability	Provides short-duration current capacity
PowerFlex DC family	Consistent platform across a broad motor-power range

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48. Product Description for Industrial Equipment Catalogs

The Allen-Bradley 20P41AD4P1RA0NNN PowerFlex DC Drive is a compact 480 VAC-class regenerative DC drive designed for industrial DC motor applications.

The unit provides 4.1 A DC output current and is rated for approximately 2 HP / 1.5 kW motor applications.

It uses a three-phase, 460/480 VAC-class input, 6-pulse power conversion, four-quadrant regenerative operation, and a regulated single-phase field supply.

The drive is housed in a Frame A, IP20 / NEMA/UL Type Open enclosure with conformal-coated electronics.

The approximate physical dimensions are 267 × 359 × 287 mm, with a drive weight of approximately 11 kg.

The combination of compact dimensions, regenerative operation, field regulation, overload capability, and PowerFlex DC architecture makes this model suitable for small industrial conveyors, feeders, winding and unwinding systems, rollers, packaging equipment, machine-tool auxiliary drives, material-handling systems, and DC motor retrofit projects.

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49. Recommended Selection Checklist

Before purchasing or replacing a 20P41AD4P1RA0NNN, the following items should be checked:

Check Item	Required Information
Existing Drive	Existing catalog number
Motor	DC motor model and nameplate
Armature Voltage	Motor rated armature voltage
Armature Current	Motor rated armature current
Motor Power	HP / kW
Field Voltage	Required field voltage
Field Current	Required field current
Motor Speed	Rated and maximum speed
Feedback	Encoder, tachometer, or other feedback
Acceleration	Required acceleration time
Deceleration	Required deceleration time
Reversing	Required or not required
Regeneration	Required or not required
Supply	Actual AC input voltage
Cabinet	Available mounting space
Cooling	Cabinet ventilation capability
Control	PLC or external control system
Wiring	Existing power and control wiring
Environment	Temperature, dust, humidity, vibration

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50. Final Technical Summary

The Allen-Bradley 20P41AD4P1RA0NNN is a compact PowerFlex DC regenerative drive designed for industrial DC motor applications in the 2 HP / 1.5 kW class.

Its principal electrical rating is 4.1 A DC output current, with approximately 500 VDC maximum output capability, a 460 VAC / 480 VAC-class three-phase input, and a 6-pulse input architecture.

The drive supports four-quadrant regenerative operation, allowing controlled forward and reverse motoring as well as regenerative conditions.

Its Frame A mechanical construction provides approximate dimensions of 267 mm × 359 mm × 287 mm, while the drive weight is approximately 11 kg.

The product uses an IP20 / NEMA/UL Type Open enclosure and is configured with conformal coating, a blank HIM plate, and no communication module in the stated catalog configuration.

The regulated field-supply arrangement is another important characteristic because it allows the drive to manage the DC motor field as part of the overall drive system.

For small industrial machines, the model can be used for controlled conveyors, feeders, rollers, winding and unwinding equipment, packaging machinery, material handling, machine-tool auxiliary functions, and DC motor retrofit applications.

The closest products for a direct same-family comparison are the 20P41AD6P0RA0NNN, 20P41AD010RA0NNN, 20P41AD014RA0NNN, 20P41AD019RA0NNN, and 20P41AD027RA0NNN.

These models provide progressively higher current and motor-power ratings while remaining within the smaller Frame A section of the PowerFlex DC family.

For substantially larger DC motors, the same family continues into 129 A, 167 A, 207 A, 250 A, 330 A, 412 A, 495 A, 667 A, and higher current configurations.

The 20P41AD4P1RA0NNN is therefore best understood as a compact, 4.1 A, 2 HP, four-quadrant regenerative DC drive for industrial motor-control applications, especially where controlled speed, controlled braking, reversing, and DC motor field regulation are required.