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1. Product Overview

The Allen-Bradley 21AD014A3AYNAEC0NNNN-ND-B0-C1-P1 is a PowerFlex 70 configured adjustable-frequency AC drive designed for industrial motor-speed control, process automation, controlled acceleration and deceleration, and general-purpose variable-speed machinery.

It belongs to the PowerFlex 70 Configured Drive family and is based on the 480 VAC, three-phase PowerFlex 70 platform. The 014 rating corresponds to a 14 A output-current class, with a normal-duty motor rating of approximately 10 HP / 7.5 kW. The PowerFlex 70 technical data identifies the 480 VAC 14 A version as a Frame C drive.

The long catalog number is important because this is not simply a basic 14 A inverter. The suffixes identify the selected configuration, including duty rating, bypass arrangement, control-power arrangement, input-protection arrangement, feedback/control options, and other drive features.

For applications using a conventional three-phase AC motor, this drive provides a practical way to regulate motor speed while also providing controlled starting, stopping, acceleration, deceleration, and motor-protection functions.

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2. Brand and Product Series

Item	Description
Brand	Allen-Bradley
Product Family	PowerFlex
Product Series	PowerFlex 70
Product Type	Configured Adjustable Frequency AC Drive
Model / Catalog Number	21AD014A3AYNAEC0NNNN-ND-B0-C1-P1
Voltage Class	480 VAC
Input Phase	Three-phase
Output Current	14 A
Normal-Duty Motor Rating	10 HP / approximately 7.5 kW
Heavy-Duty Motor Rating	7.5 HP / approximately 5.5 kW
Frame Size	C
Enclosure Class	IP20 / NEMA/UL Type 1 style
Control Type	Variable-frequency AC motor control
Feedback Configuration	No encoder feedback in the specified configuration
Brake Function	Brake IGBT configuration
Bypass	No bypass
Control Power	Drive-only control power
Input Protection	No integrated input protection under P1
I/O	Enhanced 24 V DC I/O
Typical Application	Industrial variable-speed motor control

The PowerFlex 70 product documentation identifies the 480 VAC, 14 A drive as the 20AD014 standard PowerFlex 70 rating, with a 10 HP normal-duty and 7.5 HP heavy-duty rating, while the corresponding 21A catalog format is the configured-drive version.

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3. Main Technical Parameters

Parameter	Specification
Model / Catalog Number	21AD014A3AYNAEC0NNNN-ND-B0-C1-P1
Brand	Allen-Bradley
Series	PowerFlex 70
Drive Type	Configured AC Drive
Input Voltage	480 VAC class
Input Phase	3 Phase
Output Current	14 A
Normal-Duty Rating	10 HP
Normal-Duty Power	Approximately 7.5 kW
Heavy-Duty Rating	7.5 HP
Heavy-Duty Power	Approximately 5.5 kW
Frame Size	C
Enclosure	IP20 / NEMA/UL Type 1
Frequency Class	50/60 Hz
Motor Type	Three-phase AC motor
Feedback	No encoder feedback
Brake IGBT	Included
Internal Brake Resistor	Not included
Bypass	No bypass
Control Power	Drive-only control power
Input Protection	P1 – no integrated input protection
I/O	Enhanced 24 V DC I/O
Communication	No additional communication module indicated in this configuration
Mounting	Panel / cabinet mounting
Cooling	Integral drive cooling system
Approximate Height	300 mm
Approximate Width	180 mm
Approximate Depth	138 mm
Approximate Dimensions	300 × 180 × 138 mm
Approximate Weight	6.89 kg
Typical Motor Class	10 HP normal duty
Main Function	Variable-speed AC motor control

The PowerFlex 70 Frame C mechanical data gives approximately 300 mm height, 179.8 mm width and 137.6 mm depth, with an approximate drive weight of 6.89 kg. For practical catalog presentation, these dimensions are commonly rounded to approximately 300 × 180 × 138 mm.

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4. Dimensions and Weight

Mechanical information is particularly important for this product because the 21AD014 is intended for industrial panel or cabinet installation.

The standard Frame C PowerFlex 70 enclosure has a relatively compact footprint for its 480 VAC, 14 A power class.

Mechanical Parameter	Specification
Model / Catalog Number	21AD014A3AYNAEC0NNNN-ND-B0-C1-P1
Frame	C
Height	300.0 mm
Width	179.8 mm
Depth	137.6 mm
Practical Rounded Height	300 mm
Practical Rounded Width	180 mm
Practical Rounded Depth	138 mm
Height	11.81 in
Width	7.08 in
Depth	5.42 in
Approximate Drive Weight	6.89 kg
Approximate Weight	15.2 lb
Mounting Type	Panel / cabinet
Standard Enclosure	IP20 / NEMA/UL Type 1

The published Frame C dimensions are approximately 185.0 × 300.0 × 179.8 mm in the technical-data dimensional convention, with the depth represented separately in the dimension table; the installation drawings give the corresponding physical envelope and mounting geometry. The approximate weight for Frame C is 6.89 kg.

When preparing a cabinet, it is important not to design the enclosure around the drive dimensions alone. Cable bending radius, power terminals, control wiring, ventilation, clearance, service access, and surrounding heat-producing components also need to be considered.

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5. Product Introduction

The 21AD014 is designed to control the speed and operating characteristics of an industrial three-phase AC motor.

A conventional motor connected directly to a fixed-frequency power supply normally operates at a relatively fixed speed. A variable-frequency drive changes the electrical frequency and voltage delivered to the motor, allowing the motor speed to be adjusted.

This provides a major advantage for machinery where the required operating speed changes according to production conditions.

For example, a conveyor may need to operate slowly during loading and faster during normal production. A pump may need different speeds according to process demand. A fan may need reduced speed during periods of lower airflow demand.

The drive provides the electronic control needed for these operating conditions.

The 14 A rating makes this model appropriate for a broad range of medium-sized industrial machinery. At the normal-duty rating, the associated motor class is approximately 10 HP, while the heavy-duty rating is approximately 7.5 HP.

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6. 480 VAC Three-Phase Design

The 21AD014 belongs to the 480 VAC class of PowerFlex 70 drives.

This makes it appropriate for industrial installations where the available motor-control power system is based on a three-phase 480 VAC supply.

Electrical Item	Specification
Model / Catalog Number	21AD014A3AYNAEC0NNNN-ND-B0-C1-P1
Input Voltage Class	480 VAC
Input Configuration	Three-phase
Frequency	50/60 Hz class
Output Current	14 A
Normal-Duty Power	10 HP / approximately 7.5 kW
Heavy-Duty Power	7.5 HP / approximately 5.5 kW
Drive Family	PowerFlex 70
Frame	C

The exact motor voltage and full-load current must always be checked against the motor nameplate before installation.

A motor’s horsepower rating alone should not be used as the only selection criterion.

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7. 14 A Output Rating

The 14 A output-current rating is one of the most important characteristics of the 21AD014.

The PowerFlex 70 technical data lists the 480 VAC 14 A model with a normal-duty rating of 10 HP and a heavy-duty rating of 7.5 HP.

The 14 A class is useful for machines that are larger than typical 5 HP applications but do not require the larger physical package of higher-current PowerFlex 70 drives.

This makes the drive suitable for many medium-sized industrial machines.

Typical applications include conveyors, pumps, fans, blowers, mixers, packaging machinery, material-handling equipment, processing machines, and auxiliary production equipment.

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8. Normal-Duty and Heavy-Duty Ratings

The drive has different application ratings depending on the required duty.

Duty	Approximate Motor Rating
Normal Duty	10 HP / 7.5 kW
Heavy Duty	7.5 HP / 5.5 kW

Normal-duty applications generally involve comparatively moderate overload requirements.

Heavy-duty applications place greater demands on the drive because of higher starting torque, heavier acceleration requirements, repeated overload conditions, or more demanding operating cycles.

This distinction is important when selecting the drive for a real machine.

For example, a 7.5 HP motor with a relatively easy centrifugal-fan load may have very different drive requirements from a 7.5 HP motor driving a heavily loaded conveyor or mixer.

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9. Brake IGBT Function

The specified configuration includes a brake IGBT.

The braking transistor provides a means of connecting a suitable external dynamic-braking resistor when the application requires additional braking capability.

Dynamic braking is useful when the motor has substantial inertia and needs to decelerate quickly.

During deceleration, the motor can act as a generator and return energy toward the drive’s DC bus.

If the regenerated energy is sufficiently high, the DC-bus voltage can rise.

A dynamic braking resistor can dissipate this energy as heat.

Typical applications where braking may need special attention include:

• High-inertia conveyors
• Rapid-stop machines
• Roll-handling equipment
• Material-handling systems
• Centrifugal machinery
• Certain winding/unwinding machines
• Machines with frequent acceleration and deceleration

The brake IGBT does not mean that the drive automatically includes a complete braking resistor system. The resistor and its thermal rating must be selected according to the actual application.

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10. No Internal Brake Resistor

The configuration does not indicate an internal brake resistor.

This means the dynamic-braking system, if required, must be evaluated as an external application component.

This arrangement can actually be advantageous for machine builders because the braking resistor can be selected according to the actual mechanical energy and braking cycle.

A small resistor may be appropriate for occasional braking.

A machine with repeated rapid stops may require a much larger resistor and careful thermal analysis.

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11. No Bypass Configuration

The B0 configuration represents a no-bypass arrangement.

The drive therefore functions as the primary motor controller without an integrated bypass system.

This is appropriate for many applications where the motor is intended to remain under variable-frequency control.

A bypass may be required in some critical applications where the motor needs to continue operating directly from the AC line if the drive becomes unavailable.

In such a case, a different configuration or external bypass architecture would need to be considered.

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12. C1 Drive-Only Control Power

The C1 option indicates drive-only control power.

This configuration is appropriate when the drive itself is the main controlled component and the system does not require the additional control-power architecture associated with certain bypass configurations.

This can simplify the panel design.

It also means that the control-power requirements of the drive should be considered separately from the main 480 VAC power circuit.

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13. P1 Input Protection Configuration

The P1 option represents a configuration without integrated input protection.

This means that suitable upstream protection and disconnecting equipment must be provided as part of the overall electrical installation.

This arrangement is common in industrial control panels where protection is centralized at the panel level.

The exact fuse, circuit breaker, or other protective device should be selected according to the applicable installation requirements and the drive’s electrical specifications.

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14. Enhanced 24 V DC I/O

The configuration includes enhanced 24 V DC I/O.

This allows the drive to communicate with external machine-control circuits using conventional industrial control signals.

Typical control functions can include:

• Run command
• Stop command
• Forward command
• Reverse command
• Speed reference
• Fault indication
• Drive status
• External enable
• Process-control signals

This makes the drive suitable for integration into PLC-controlled machines.

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15. No Encoder Feedback

The specified configuration does not include encoder feedback.

This is suitable for many conventional variable-speed motor applications.

A conveyor, fan, pump, or blower often does not require a physical encoder because the required speed regulation can be achieved through the drive’s standard motor-control functions.

More demanding applications may require closed-loop feedback.

Examples include precision low-speed control, applications requiring tightly controlled shaft speed, or machinery requiring accurate position information.

In such cases, the drive configuration should be reconsidered.

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16. IP20 / NEMA Type 1 Style Construction

The PowerFlex 70 Frame C standard enclosure is associated with IP20 / NEMA/UL Type 1 construction.

This means the drive is intended for installation in an appropriate industrial environment or electrical enclosure.

It should not be treated as a sealed outdoor device.

Where the installation environment contains dust, oil mist, water spray, conductive contamination, high humidity, or corrosive substances, an appropriate enclosure and environmental-control strategy should be provided.

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17. Main Product Applications

Conveyor Systems

The 21AD014 is a practical drive class for many conveyor systems.

A conveyor motor may need to start smoothly instead of immediately applying full mechanical torque.

The drive can provide controlled acceleration, reducing sudden mechanical loading on belts, chains, gearboxes, couplings, and conveyor structures.

The operating speed can also be adjusted according to production requirements.

This is especially useful in packaging, material handling, assembly, and manufacturing systems.

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Pumps

The drive can be used for many industrial pump applications.

Variable-speed control allows the pump motor to operate according to actual process requirements rather than always operating at maximum speed.

Typical applications include circulation systems, process pumps, cooling systems, water transfer, and industrial fluid-handling equipment.

Pump-specific operating limitations should be checked before final selection.

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Fans and Blowers

Fans and blowers are common variable-speed applications.

The 21AD014 can control motor speed according to required airflow.

A process that does not require maximum airflow does not necessarily need the motor to operate continuously at maximum speed.

The ability to vary speed provides a flexible method of controlling airflow.

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Packaging Equipment

Packaging machines frequently contain several motor-driven mechanisms.

These can include conveyors, rollers, feeders, transfer systems, and auxiliary equipment.

The 21AD014 can provide controlled motor speed and acceleration for many such mechanisms.

Where multiple axes require coordinated motion or precision positioning, however, a more specialized drive architecture may be preferable.

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Material-Handling Machinery

Material-handling systems often need adjustable speed.

Examples include:

• Roller conveyors
• Transfer conveyors
• Feeders
• Sorting systems
• Material-transfer machines
• Small lifting or handling mechanisms

The drive can provide controlled acceleration and speed regulation while interfacing with the machine’s control system.

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Mixers

Industrial mixers can impose significant starting loads.

The 21AD014 may be suitable when the motor current and overload requirements fall within the drive’s rating.

However, mixer applications should be evaluated carefully because the torque requirement can change dramatically with material viscosity and batch conditions.

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Machine Tools

The drive can be used in selected machine-tool applications where variable-speed AC motor operation is required.

Applications requiring precise positioning, high-performance motion control, or tightly controlled low-speed operation may require a more specialized configuration.

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Process Machinery

Many process machines use motors in the 5–15 HP range.

The 14 A PowerFlex 70 class fits naturally into this general industrial power range.

It can be used for rollers, feeders, pumps, fans, conveyors, auxiliary drives, and other process equipment.

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18. Main Product Advantages

1. 10 HP Normal-Duty Capability

The 10 HP normal-duty rating makes the drive suitable for a broad range of industrial machinery.

It is large enough for many medium-sized machines without moving into the much larger physical size associated with higher-power drives.

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2. 14 A Output Capacity

The 14 A output rating gives the drive useful current capacity for medium-sized motors.

It also provides a straightforward selection point when comparing different PowerFlex 70 models.

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3. 480 VAC Three-Phase Operation

The 480 VAC class is suitable for many industrial power systems.

This makes the model useful for machinery designed around a standard three-phase industrial electrical supply.

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4. Compact Frame C Design

The Frame C housing provides a relatively compact package.

The approximate physical envelope is about 300 × 180 × 138 mm, with a drive weight of approximately 6.89 kg.

This is helpful when designing compact control cabinets.

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5. Dynamic Braking Capability

The brake IGBT provides a convenient architecture for dynamic braking when the application requires faster or more controlled stopping.

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6. Flexible I/O

The enhanced 24 V DC I/O arrangement provides useful integration options for PLC and machine-control systems.

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7. No-BYPASS Architecture

For machines that do not need bypass operation, the B0 configuration provides a simpler architecture.

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8. Configured Product Structure

The long 21A catalog number allows a specific combination of drive functions to be ordered as a defined configuration.

This can simplify procurement and machine standardization.

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9. Suitable for Retrofit Projects

The PowerFlex 70 family is useful when working with existing industrial machinery that already uses the same general drive architecture.

This can reduce the amount of redesign required compared with changing to a completely different drive platform.

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19. Recommended Same-Series or Closely Related Models

The following models are useful comparison points within the PowerFlex 70 family.

The first model is the standard PowerFlex 70 equivalent rating, while the other models move upward in current and motor-power capacity.

Model / Catalog Number	Series	Voltage Class	Output Current	Normal Duty	Heavy Duty	Frame
21AD014A3AYNAEC0NNNN-ND-B0-C1-P1	PowerFlex 70 Configured	480 VAC	14 A	10 HP / 7.5 kW	7.5 HP / 5.5 kW	C
20AD014	PowerFlex 70	480 VAC	14 A	10 HP / 7.5 kW	7.5 HP / 5.5 kW	C
20AD022	PowerFlex 70	480 VAC	22 A	15 HP / 11 kW	10 HP / 7.5 kW	D
20AD027	PowerFlex 70	480 VAC	27 A	20 HP / 15 kW	15 HP / 11 kW	D
20AD034	PowerFlex 70	480 VAC	34 A	25 HP / 18.5 kW	20 HP / 15 kW	D
20AD040	PowerFlex 70	480 VAC	40 A	30 HP / 22 kW	25 HP / 18.5 kW	D

The PowerFlex 70 technical data confirms the current and horsepower progression from the 14 A 10 HP model through the 22 A, 27 A, 34 A and 40 A models.

These models are useful for sizing comparisons, but they should not be treated as automatic drop-in substitutes for the configured 21AD014.

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20. Same-Series Mechanical Comparison

Model / Catalog Number	Frame	Approx. Height	Approx. Width	Approx. Depth	Approx. Weight
21AD014A3AYNAEC0NNNN-ND-B0-C1-P1	C	300 mm	180 mm	138 mm	6.89 kg
20AD014	C	300 mm	180 mm	138 mm	6.89 kg
20AD022	D	350 mm	220 mm	169 mm	9.25 kg
20AD027	D	350 mm	220 mm	169 mm	9.25 kg
20AD034	D	350 mm	220 mm	169 mm	9.25 kg
20AD040	D	350 mm	220 mm	169 mm	9.25 kg

The published PowerFlex 70 mechanical table gives approximately 300 × 179.8 × 137.6 mm and 6.89 kg for Frame C, while Frame D is approximately 350 × 219.9 × 169.0 mm and 9.25 kg.

This difference is important when moving from a 14 A model to a larger-current model.

A higher-current drive may require a larger cabinet space even when the electrical purpose is similar.

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21. Five Same-Brand Popular Related Models

The following models belong to other PowerFlex families and are useful when comparing the 21AD014 with other Allen-Bradley AC-drive platforms.

They should be considered related products rather than direct replacements.

Model / Catalog Number	Series	Input	Current / Power	Frame	Enclosure	Approx. Dimensions	Approx. Weight
25B-D010N114	PowerFlex 525	380–480 VAC, 3-phase	10.5 A, 5 HP / 4 kW	B	IP20 / NEMA Open	228.09 × 139.95 × 239.01 mm	2.193 kg
20AD014	PowerFlex 70	480 VAC, 3-phase	14 A, 10 HP	C	IP20 / NEMA Type 1	Approx. 300 × 180 × 138 mm	6.89 kg
20AD022	PowerFlex 70	480 VAC, 3-phase	22 A, 15 HP	D	IP20 / NEMA Type 1	Approx. 350 × 220 × 169 mm	9.25 kg
20F1ANE033JA0NNNNN	PowerFlex 753	480 VAC class	Application/configuration dependent	Configuration dependent	Configuration dependent	Configuration dependent	Configuration dependent
20G11FD052AA0NNNNN	PowerFlex 755	480 VAC class	Higher-power industrial class	Configuration dependent	Configuration dependent	Configuration dependent	Configuration dependent

The PowerFlex 525 example is a much more compact drive. Its documented rating is 10.5 A at 480 VAC, 5 HP / 4 kW, Frame B, with IP20 construction, embedded EtherNet/IP and safety functions. Its dimensions are approximately 228.09 × 139.95 × 239.01 mm and its weight is 2.193 kg.

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22. PowerFlex 70 Compared With PowerFlex 525

The PowerFlex 525 is particularly useful as a comparison because it occupies a similar general industrial AC-drive market but uses a more compact architecture.

Feature	PowerFlex 70 14 A	PowerFlex 525 10.5 A
Model / Catalog Number	21AD014A3AYNAEC0NNNN-ND-B0-C1-P1	25B-D010N114
Product Family	PowerFlex 70	PowerFlex 525
Voltage	480 VAC class	380–480 VAC
Phase	3-phase	3-phase
Output Current	14 A	10.5 A
Normal-Duty Power	10 HP	5 HP
Heavy-Duty Power	7.5 HP	5 HP
Frame	C	B
Enclosure	IP20 / NEMA Type 1	IP20 / NEMA Open
Communications	Configuration dependent	Embedded EtherNet/IP
Safety	Configuration dependent	Integrated safety features
Approx. Weight	6.89 kg	2.193 kg
Approx. Size	300 × 180 × 138 mm	228.09 × 139.95 × 239.01 mm
Brake IGBT	Yes	Yes

The PowerFlex 525 is considerably lighter and includes embedded EtherNet/IP and safety functionality in the cited configuration.

The PowerFlex 70 remains particularly relevant where an existing machine has been designed around the PowerFlex 70 platform.

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23. PowerFlex 70 Compared With Larger PowerFlex 70 Models

The 21AD014 sits at an important point in the PowerFlex 70 power range.

Model / Catalog Number	Current	Normal Duty	Heavy Duty	Frame
21AD014A3AYNAEC0NNNN-ND-B0-C1-P1	14 A	10 HP	7.5 HP	C
20AD022	22 A	15 HP	10 HP	D
20AD027	27 A	20 HP	15 HP	D
20AD034	34 A	25 HP	20 HP	D
20AD040	40 A	30 HP	25 HP	D

The 14 A model is the only one in this comparison that remains in Frame C. The larger-current models move into Frame D, increasing the physical size and weight of the drive.

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24. Conveyor Application Example

Consider a conveyor using a 10 HP, 480 VAC three-phase motor.

The motor needs to start smoothly, operate at several production speeds, and stop without creating excessive mechanical shock.

The 21AD014 can provide the variable-frequency control required for this type of application when the actual motor current is compatible with the drive rating.

The acceleration time can be configured according to the conveyor’s mechanical characteristics.

If the conveyor carries heavy material, the acceleration profile can be selected to avoid an unnecessarily abrupt increase in torque.

If rapid stopping is required, the brake IGBT and external braking arrangement can be evaluated.

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25. Pump Application Example

For an industrial pump, the 21AD014 can provide variable-speed operation.

Suppose the process requires several flow conditions.

Instead of running the motor at one fixed speed and using only a mechanical flow-control device, the drive can vary the motor speed according to the process command.

This gives the control system more flexibility.

The pump manufacturer’s minimum and maximum speed requirements should still be respected.

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26. Fan Application Example

A 10 HP fan motor can require different operating speeds throughout the production day.

The drive can provide a lower speed during reduced demand and increase speed when greater airflow is required.

The result is a more flexible motor-control system.

The drive also provides controlled acceleration, which can reduce mechanical shock during startup.

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27. Mixer Application Example

Mixers are more demanding than many fan applications because the mechanical load can vary significantly.

A mixer may start with a relatively light load and become substantially heavier as material is introduced.

The motor current should therefore be carefully checked.

The heavy-duty rating of the drive may become relevant depending on the actual process.

For an application that continuously approaches the heavy-duty current limit, a larger drive may be more appropriate.

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28. High-Inertia Application

If the machine has a large rotating mass, the drive’s braking capability becomes more important.

For example, a roller system may continue rotating for a significant amount of time after the run command is removed.

If the required stopping time is short, regenerated energy can become substantial.

The brake IGBT allows an appropriately designed external braking resistor system to be considered.

This is one of the useful features of this particular configuration.

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29. Cabinet Design

The approximate Frame C dimensions are:

300 mm high × 180 mm wide × 138 mm deep

and the approximate drive weight is:

6.89 kg.

These dimensions should be treated as the drive envelope rather than the complete electrical-panel dimensions.

A finished control cabinet will normally require additional space for:

• Incoming power wiring
• Motor cables
• Control wiring
• Grounding
• Circuit protection
• Contactors
• Terminal blocks
• PLC equipment
• Communication equipment
• Braking components
• Ventilation
• Maintenance access
• Cable bending radius

A cabinet should therefore be significantly larger than the drive itself.

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30. Thermal Management

Heat management is an important part of AC-drive installation.

The drive converts electrical energy while controlling the motor, and a portion of that energy becomes heat.

If several drives are installed inside a cabinet, their heat losses accumulate.

The cabinet designer should therefore calculate the total heat load.

Ventilation should be designed so that heated air does not simply circulate around the drive.

Where the ambient temperature is high, additional cooling or derating may be necessary.

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31. Motor Cable Considerations

The motor cable is part of the drive system.

Long motor cables can increase electrical stress and may create additional issues involving reflected-wave voltage, common-mode currents, and electromagnetic interference.

The installation should therefore use suitable motor cable and grounding practices.

The cable size should also be selected according to the motor current and applicable electrical installation requirements.

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32. Control-System Integration

The 21AD014 can form part of a larger industrial automation system.

A PLC can provide commands to the drive.

Typical control architecture may include:

PLC → Drive → Motor

The PLC can send run/stop commands and speed references.

The drive then controls the motor according to the programmed parameters.

The drive can also provide status and fault information back to the control system.

This makes the PowerFlex 70 suitable for many conventional automated production machines.

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33. Maintenance Advantages

A standardized PowerFlex platform can simplify maintenance for facilities that already use the same drive family.

Technicians familiar with PowerFlex 70 drives can work with similar parameter structures, wiring concepts, fault information, and installation practices.

This can reduce the amount of training required when maintaining several machines with the same general drive platform.

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34. Retrofit Applications

The 21AD014 can be particularly useful in retrofit work where an existing machine already uses PowerFlex 70 equipment.

Before replacing an existing drive, the following should be checked:

Check	Requirement
Model / Catalog Number	21AD014A3AYNAEC0NNNN-ND-B0-C1-P1
Input Voltage	480 VAC class
Motor Current	Must be compatible with 14 A rating
Motor Power	10 HP ND / 7.5 HP HD class
Feedback	Verify whether encoder feedback is required
Braking	Check whether external braking resistor is needed
Bypass	Existing machine must not depend on bypass unless separately provided
Control Power	Verify C1 configuration requirements
Input Protection	Provide appropriate upstream protection
I/O	Verify existing control wiring
Cabinet Space	Frame C envelope
Weight	Approximately 6.89 kg
Communication	Check PLC/network requirements

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35. Selection Compared With the 11 A Model

The 11 A PowerFlex 70 and 14 A PowerFlex 70 are very close electrically and mechanically.

Characteristic	11 A Model	14 A Model
Model / Catalog Number	20AD011	20AD014
Output Current	11 A	14 A
Normal Duty	7.5 HP	10 HP
Heavy Duty	5 HP	7.5 HP
Frame	C	C
Approx. Weight	6.89 kg	6.89 kg
Approx. Height	300 mm	300 mm
Approx. Width	180 mm	180 mm
Approx. Depth	138 mm	138 mm

The two models occupy the same Frame C mechanical class, but the 14 A model provides greater current and horsepower capacity.

This makes the 14 A model useful when the motor is above the 11 A class but still fits within the Frame C power range.

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36. Selection Compared With the 22 A Model

The jump from 14 A to 22 A is more significant.

Characteristic	14 A Model	22 A Model
Model / Catalog Number	20AD014	20AD022
Output Current	14 A	22 A
Normal Duty	10 HP	15 HP
Heavy Duty	7.5 HP	10 HP
Frame	C	D
Approx. Weight	6.89 kg	9.25 kg
Approx. Height	300 mm	350 mm
Approx. Width	180 mm	220 mm
Approx. Depth	138 mm	169 mm

The 22 A model moves into Frame D, which means that increasing electrical capacity also increases the mechanical envelope.

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37. Why the 21AD014 Is a Practical Medium-Power Drive

The 21AD014 occupies a useful middle position.

It is larger than the small 5 HP-class PowerFlex drives but smaller than the higher-current PowerFlex 70 models.

Its 14 A rating gives it enough capacity for many 10 HP industrial motors.

At the same time, the Frame C package keeps the physical dimensions relatively compact.

This combination is useful for machine builders who need more capacity than an 11 A drive but do not want to move immediately to the larger Frame D package.

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38. Product Advantages for Industrial Machinery

The most useful characteristics of the 21AD014 can be summarized as follows:

• 480 VAC three-phase industrial operation
• 14 A output-current rating
• 10 HP normal-duty rating
• 7.5 HP heavy-duty rating
• Frame C construction
• Approximately 6.89 kg drive weight
• Approximately 300 × 180 × 138 mm physical envelope
• Dynamic-braking transistor capability
• Enhanced 24 V DC I/O
• No-bypass configuration
• Drive-only control-power configuration
• No encoder feedback in the specified configuration
• Configured-drive catalog structure
• Suitable for conveyors, pumps, fans, blowers and process machinery
• Suitable for many industrial retrofit projects

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39. Complete Product Parameter Summary

Parameter	Final Specification
Brand	Allen-Bradley
Series	PowerFlex 70
Product Family	PowerFlex 70 Configured Drive
Model / Catalog Number	21AD014A3AYNAEC0NNNN-ND-B0-C1-P1
Product Type	Adjustable Frequency AC Drive
Input Voltage	480 VAC
Input Phase	3 Phase
Output Current	14 A
Normal-Duty Rating	10 HP
Normal-Duty Power	Approximately 7.5 kW
Heavy-Duty Rating	7.5 HP
Heavy-Duty Power	Approximately 5.5 kW
Frame	C
Enclosure	IP20 / NEMA/UL Type 1
Brake IGBT	Yes
Internal Brake Resistor	No
Feedback	No encoder feedback
I/O	Enhanced 24 V DC
Bypass	No
Control Power	Drive-only
Input Protection	P1 – no integrated input protection
Approx. Height	300 mm
Approx. Width	180 mm
Approx. Depth	138 mm
Approx. Dimensions	300 × 180 × 138 mm
Approx. Weight	6.89 kg
Approx. Weight in Pounds	15.2 lb
Typical Motor	Three-phase AC motor
Typical Applications	Conveyor, pump, fan, blower, mixer, packaging, material handling
Mounting	Panel / cabinet
Cooling	Integral cooling
Application Type	General industrial variable-speed motor control

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40. Same-Series Recommendation Summary

Model / Catalog Number	Current	Normal Duty	Heavy Duty	Frame	Approx. Weight
21AD014A3AYNAEC0NNNN-ND-B0-C1-P1	14 A	10 HP	7.5 HP	C	6.89 kg
20AD014	14 A	10 HP	7.5 HP	C	6.89 kg
20AD022	22 A	15 HP	10 HP	D	9.25 kg
20AD027	27 A	20 HP	15 HP	D	9.25 kg
20AD034	34 A	25 HP	20 HP	D	9.25 kg
20AD040	40 A	30 HP	25 HP	D	9.25 kg

The current and horsepower ratings are based on the PowerFlex 70 480 VAC rating tables, while the mechanical values correspond to the associated Frame C and Frame D drive sizes.

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41. Same-Brand Related Product Summary

Model / Catalog Number	Series	Voltage	Current	Power	Dimensions	Weight
21AD014A3AYNAEC0NNNN-ND-B0-C1-P1	PowerFlex 70	480 VAC	14 A	10 HP ND	Approx. 300 × 180 × 138 mm	6.89 kg
25B-D010N114	PowerFlex 525	380–480 VAC	10.5 A	5 HP / 4 kW	228.09 × 139.95 × 239.01 mm	2.193 kg
20AD014	PowerFlex 70	480 VAC	14 A	10 HP ND	Approx. 300 × 180 × 138 mm	6.89 kg
20AD022	PowerFlex 70	480 VAC	22 A	15 HP ND	Approx. 350 × 220 × 169 mm	9.25 kg
20F1ANE033JA0NNNNN	PowerFlex 753	480 VAC class	Configuration dependent	Configuration dependent	Configuration dependent	Configuration dependent
20G11FD052AA0NNNNN	PowerFlex 755	480 VAC class	Configuration dependent	Configuration dependent	Configuration dependent	Configuration dependent

The PowerFlex 525 dimensions and weight are directly listed for the 25B-D010N114 configuration, while the PowerFlex 70 Frame C and D dimensions and weights come from the PowerFlex 70 mechanical data.

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42. Final Product Description

The Allen-Bradley 21AD014A3AYNAEC0NNNN-ND-B0-C1-P1 is a PowerFlex 70 configured 480 VAC three-phase AC drive with a 14 A output-current rating.

Its normal-duty motor rating is approximately 10 HP / 7.5 kW, while its heavy-duty rating is approximately 7.5 HP / 5.5 kW. The corresponding PowerFlex 70 14 A drive is a Frame C product, giving it an approximate physical envelope of 300 × 180 × 138 mm and an approximate weight of 6.89 kg.

The specified configuration includes a brake IGBT, enhanced 24 V DC I/O, no encoder feedback, no bypass, drive-only control power, and no integrated input protection under the P1 configuration.

Its main purpose is straightforward and practical: provide reliable variable-speed control for three-phase AC motors in industrial machinery.

It is well suited to applications such as conveyors, pumps, fans, blowers, packaging equipment, material-handling machinery, mixers, process equipment, and general-purpose production machines.

For machine builders, the configured catalog number is particularly useful because the drive’s options are represented directly within the ordering structure.

For maintenance and retrofit work, the 21AD014 is also useful where the existing installation is already based on the PowerFlex 70 platform.

When selecting this model for a new installation, the most important checks are the motor nameplate current, motor voltage, duty cycle, acceleration and deceleration requirements, braking requirements, ambient temperature, enclosure design, upstream protection, control architecture, and available cabinet space.

The most important practical point is that the 14 A rating should be matched against the actual motor current, not simply against the horsepower printed on the motor nameplate.

Overall, the 21AD014 represents a compact 10 HP-class industrial PowerFlex 70 drive, with the Frame C mechanical package, 480 VAC three-phase operation, dynamic-braking capability, and configurable industrial control functions needed for a wide range of conventional variable-speed motor applications.