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Allen-Bradley 20F1ANF046JN0NNNNN — Detailed Product Specifications, Introduction, Applications, Advantages and Recommended Models

1. Product Overview

The Allen-Bradley 20F1ANF046JN0NNNNN is a PowerFlex 753 air-cooled AC drive designed for industrial three-phase motor control.

This model is configured for 690 VAC three-phase power, with a nominal output current of 46 A. It provides a 37 kW Normal Duty rating and a 30 kW Heavy Duty rating, making it suitable for a wide range of medium-to-large industrial motor applications.

The drive uses a Frame 6 mechanical configuration and an open-type IP20/IP00 enclosure arrangement. It is intended to be installed inside a suitable electrical control cabinet rather than being exposed directly to the surrounding industrial environment.

A particularly important point about this catalog number is the JN configuration. The model has filtered EMC configuration with the CM jumper installed, but does not include an internal dynamic-braking transistor.

This makes the model especially appropriate for applications where the motor does not require the additional dynamic-braking hardware built into the corresponding JA configuration.

The drive also includes embedded I/O, uses forced-air cooling, has AC input with precharge and no DC terminals, and is supplied in a blank/no-HIM configuration.

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2. Brand and Series

The PowerFlex 753 series is intended for general-purpose industrial AC motor control.

It is particularly useful when a machine requires adjustable motor speed, controlled acceleration and deceleration, process control, embedded I/O and the ability to integrate the drive into a larger automation system.

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3. Main Technical Parameters

The dimensions and weight above are useful for preliminary cabinet planning. Actual installation should allow additional room for power cables, control wiring, ventilation, maintenance access and the applicable mounting arrangement.

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4. Product Introduction

The 20F1ANF046JN0NNNNN is a high-voltage variable-frequency AC drive intended for controlling three-phase industrial motors.

The main purpose of the drive is to regulate the speed and operating behavior of an AC motor.

Instead of connecting the motor directly to a fixed-frequency power supply and allowing it to operate at essentially one normal speed, the drive controls the electrical frequency and voltage supplied to the motor.

This allows the motor speed to be adjusted according to the machine’s requirements.

For industrial equipment, this can provide considerably more flexibility than traditional fixed-speed motor operation.

A pump, for example, may not need to run at full speed continuously.

A fan may require different airflow levels during different production conditions.

A conveyor may need slow acceleration to prevent material from shifting.

A mixer may need a controlled acceleration profile to avoid excessive mechanical stress.

The PowerFlex 753 platform is designed to address these types of requirements.

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5. Significance of the 20F1ANF046JN0NNNNN Catalog Number

The complete catalog number contains important configuration information.

It should therefore be treated as more than simply a model identification number.

The principal characteristics represented by this configuration include:

This is why two drives that appear similar from their power rating can still have important differences.

For example, the 20F1ANF046JN0NNNNN and 20F1ANF046JA0NNNNN both have the same basic 690 VAC, 46 A, 37 kW Normal Duty and 30 kW Heavy Duty ratings.

The major difference is the dynamic-braking configuration.

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6. 690 VAC Three-Phase Design

The drive is designed for a 690 VAC three-phase electrical system.

This voltage class is particularly useful for larger industrial motor installations.

For a given motor power, a higher motor voltage can allow lower current compared with a lower-voltage motor system.

This can influence the overall electrical design of:

• Motor feeders
• Power cables
• Distribution equipment
• Control cabinets
• Protective devices
• Motor disconnects
• Drive input equipment

The motor nameplate should always be checked before final drive selection.

The motor voltage and rated current must be compatible with the drive.

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7. 46 A Output Rating

The 46 A output rating is one of the most important specifications of this model.

It places the drive above the 30 A and 34 A versions in the same 690 VAC PowerFlex 753 family.

It is also below the 50 A and 61 A configurations.

This makes the 46 A model a useful middle-range solution for industrial systems.

Drive selection should not be based on kW alone.

The motor’s actual rated current should be compared with the appropriate drive current rating.

This is especially important when the motor has:

• High starting torque requirements
• Low power factor
• High mechanical load
• Frequent acceleration
• Heavy-duty operating cycles
• Significant inertia

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8. Normal Duty Rating — 37 kW

The drive provides a 37 kW Normal Duty rating.

This rating is especially useful for variable-torque applications.

Typical examples include:

• Centrifugal pumps
• Industrial fans
• Blowers
• Ventilation systems
• Air-handling equipment
• Cooling systems
• Fluid circulation equipment

Variable-torque applications are often well suited to variable-frequency drive operation because the required torque decreases as speed decreases.

The drive can therefore reduce motor speed when full output is not required.

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9. Heavy Duty Rating — 30 kW

The drive has a 30 kW Heavy Duty rating.

This is important for applications where the load is more demanding.

Typical examples include:

• Conveyors
• Mixers
• Feeders
• Material-handling machinery
• Constant-torque process equipment
• Production machinery

Heavy Duty operation should be evaluated based on the actual motor current and load characteristics.

A 37 kW Normal Duty rating should not automatically be interpreted as meaning that a 37 kW constant-torque motor can be used in every application.

For demanding constant-torque loads, the Heavy Duty rating is the more appropriate reference.

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10. Normal Duty and Heavy Duty Comparison

The distinction between Normal Duty and Heavy Duty is essential when selecting this drive.

For a centrifugal pump, the 37 kW Normal Duty rating may be the appropriate rating.

For a conveyor, the 30 kW Heavy Duty rating may be the more relevant limit.

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11. No Internal Dynamic-Braking Transistor

One of the defining characteristics of 20F1ANF046JN0NNNNN is that it has no internal dynamic-braking transistor.

This is indicated by the N in the applicable catalog-number position.

This distinguishes it from:

20F1ANF046JA0NNNNN

The JA version includes an internal dynamic-braking transistor, while the JN version does not.

This difference should be carefully considered when selecting a replacement drive.

If the machine requires substantial dynamic braking, selecting the JN configuration without evaluating the braking requirements could lead to an unsuitable system design.

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12. When the No-DB Configuration Is Appropriate

The absence of an internal dynamic-braking transistor is not necessarily a disadvantage.

For many applications, dynamic braking is simply not required.

Examples include:

• Long-running centrifugal pumps
• Large ventilation fans
• Continuous-duty blowers
• Circulation systems
• Applications with long acceleration and deceleration times
• Machines where the motor naturally slows down without significant regenerative energy

In these cases, the simpler configuration may be entirely appropriate.

It can also avoid installing braking components that the application does not actually need.

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13. Applications

The 20F1ANF046JN0NNNNN can be used in many industrial applications.

Major application areas include:

• Pumping systems
• Fan systems
• Blowers
• HVAC-related industrial equipment
• Water circulation
• Process equipment
• Conveyors
• Feeders
• Mixers
• Material handling
• Production machinery
• Industrial ventilation
• Cooling systems
• Fluid-processing equipment
• General machine automation

The final suitability depends on the motor’s rated current, load characteristics, acceleration requirements and operating environment.

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14. Pump Applications

Pumps are one of the most natural applications for this drive.

The 37 kW Normal Duty rating provides substantial capacity for larger pump motors.

Potential applications include:

• Water-transfer pumps
• Process pumps
• Cooling-water pumps
• Circulation pumps
• Pressure-control pumps
• Industrial fluid systems
• Water-treatment systems

A variable-frequency drive can adjust pump speed according to process demand.

This is particularly useful when flow or pressure changes throughout the production cycle.

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15. PID Control for Pump Systems

The PowerFlex 753 platform provides PID functionality that can be useful in pump-control applications.

For example, a pressure-control system may operate as follows:

Pressure Sensor → Feedback Signal → PID Control → Drive → Pump Motor → System Pressure

If the actual pressure is below the desired setpoint, the drive can increase motor speed.

If the pressure is higher than required, motor speed can be reduced.

This allows the motor to operate according to actual system requirements rather than continuously running at full speed.

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16. Fan and Blower Applications

The drive is also well suited to industrial fans and blowers.

Typical applications include:

• Factory ventilation
• Exhaust fans
• Cooling fans
• Process-air systems
• Industrial blowers
• Dust-collection systems
• Air-handling equipment
• Ventilation equipment

The ability to adjust motor speed allows airflow to be matched more closely to process requirements.

This can improve process flexibility and reduce unnecessary motor operation at maximum speed.

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17. Conveyor Applications

The drive can also be applied to conveyor systems.

Typical applications include:

• Belt conveyors
• Roller conveyors
• Transfer conveyors
• Production-line conveyors
• Bulk-material conveyors
• Packaging conveyors

Variable-speed operation can provide:

• Controlled acceleration
• Adjustable production speed
• Controlled stopping
• Better synchronization
• Reduced mechanical shock

However, the absence of an internal dynamic-braking transistor must be considered carefully if the conveyor is high-inertia or requires rapid stopping.

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18. Mixer Applications

Mixers often have variable and sometimes demanding mechanical loads.

The drive can provide controlled acceleration and speed regulation.

Possible applications include:

• Industrial mixers
• Process mixers
• Blending systems
• Material-processing equipment
• Production mixing machinery

The Heavy Duty rating should be used when evaluating constant-torque mixer applications.

If the mixer has substantial inertia and must stop rapidly, the braking requirements should be analyzed separately.

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19. Feeder Applications

Feeders often require stable and adjustable speed.

Examples include:

• Bulk-material feeders
• Dosing systems
• Production feeders
• Material-transfer equipment
• Process feeders

The drive can adjust motor speed according to production requirements.

This allows the feeder to be integrated with other production equipment.

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20. Material-Handling Applications

Material-handling equipment can benefit from variable-speed motor control.

Applications may include:

• Transfer systems
• Conveyor systems
• Automated material handling
• Production-line transport
• Industrial logistics machinery

Speed can be adjusted according to the production cycle.

Acceleration can also be controlled to reduce sudden mechanical loading.

However, the load inertia and stopping requirements should be evaluated carefully because this particular configuration does not include the internal dynamic-braking transistor.

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21. Process Machinery

The PowerFlex 753 architecture is suitable for process machinery requiring adjustable motor operation.

Possible applications include:

• Process pumps
• Fans
• Blowers
• Mixers
• Feeders
• Material-handling systems
• Production machinery
• Utility equipment

Embedded I/O and process-control functions make the drive suitable for integration into larger machine-control systems.

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22. Embedded I/O

The drive includes embedded I/O.

This allows basic machine-control signals to be handled directly through the drive.

Typical control signals can include:

• Start
• Stop
• Enable
• Direction
• Speed reference
• Fault reset
• Run status
• Fault status
• Analog references
• Digital interlocks

The exact I/O configuration should be evaluated according to the machine-control requirements.

For many standard applications, embedded I/O can reduce the need for additional interface hardware.

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23. PID Capability

PID control is another useful PowerFlex 753 feature.

PID functionality can be used where the motor needs to respond automatically to a process variable.

Common examples include:

• Pressure
• Flow
• Airflow
• Temperature-related control systems
• Fluid circulation
• Process regulation

This makes the drive more than a simple motor-speed controller.

It can become part of the process-control loop.

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24. EMC Filtering

The 20F1ANF046JN0NNNNN configuration includes filtering and has the CM jumper installed.

This is important for industrial electrical installations where multiple electronic devices operate in the same cabinet.

Typical nearby equipment can include:

• PLCs
• HMIs
• Sensors
• Communication equipment
• Analog instrumentation
• Other variable-frequency drives
• Industrial computers

Appropriate EMC design can help reduce the possibility of electrical interference.

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25. AC Input With Precharge

The drive uses an AC input with precharge and no DC terminals.

The precharge function helps control the initial charging of the internal DC bus when the drive is energized.

The no-DC-terminal configuration is useful to understand when integrating the drive into a system.

It means that the drive should not be treated as a drive intended for an externally connected DC bus simply because other products in the same family may have different input configurations.

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26. Frame 6

The drive uses a Frame 6 mechanical construction.

Frame size influences:

• Physical dimensions
• Mounting arrangement
• Cooling requirements
• Power-terminal layout
• Cable routing
• Cabinet space
• Service access

The Frame 6 design is appropriate for this drive’s relatively high power level.

A cabinet designer should provide adequate room around the drive rather than designing the enclosure around the drive’s external dimensions alone.

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27. Open-Type Enclosure

The drive uses an IP20/IP00, NEMA/UL open-type arrangement.

This means the drive is intended for installation inside an appropriate electrical enclosure.

The enclosure should protect the drive from environmental hazards such as:

• Water
• Oil
• Excessive dust
• Conductive contamination
• Metal particles
• Chemical contamination
• Accidental contact

The cabinet should also provide adequate cooling.

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28. Forced-Air Cooling

The drive uses forced-air cooling.

At a power level of 37 kW Normal Duty, thermal management is an important part of system design.

The cabinet designer should consider:

• Ambient temperature
• Cabinet temperature
• Airflow
• Fan operation
• Heat-sink cleanliness
• Cabinet ventilation
• Air filters
• Adjacent heat-producing equipment
• Drive loading

A restricted airflow path can increase operating temperature.

For long-term operation, the cooling system should therefore be treated as an important part of the drive installation rather than as an afterthought.

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29. Dimensions and Weight

The approximate dimensions are useful when preparing a preliminary cabinet layout.

The 38.6 kg approximate weight should also be considered when designing the mounting structure and handling procedure.

Additional clearance should be provided for wiring and maintenance.

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30. Cabinet Installation

The physical dimensions of the drive do not represent the total space required by the installation.

A practical cabinet layout should also account for:

• Incoming power cables
• Motor cables
• Ground connections
• Control wiring
• Communication cables
• Cable bending radius
• Cooling airflow
• Service access
• Component spacing
• Heat dissipation
• Maintenance access

A cabinet that fits the drive physically may still be unsuitable if there is not enough room for airflow or cable routing.

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31. Major Product Advantages

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32. Advantage — 46 A Capacity

The 46 A capacity provides a useful balance between drive size and motor capacity.

It is larger than:

• 20 A
• 23 A
• 30 A
• 34 A

and smaller than:

• 50 A
• 61 A
• 82 A

configurations in the same general 690 VAC family.

This makes the 46 A model a practical choice when the 34 A unit is too small but a 50 A unit would provide unnecessary additional capacity.

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33. Advantage — 37 kW Normal Duty

The 37 kW Normal Duty rating makes the model particularly useful for variable-torque machinery.

It is well suited to:

• Pumps
• Fans
• Blowers
• Ventilation systems
• Cooling equipment
• Fluid circulation

For these applications, variable-speed control can provide better process flexibility than fixed-speed motor operation.

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34. Advantage — 30 kW Heavy Duty

The 30 kW Heavy Duty rating gives the drive useful capacity for more demanding loads.

It can be considered for:

• Conveyors
• Mixers
• Feeders
• Process machinery
• Material-handling equipment

The motor’s actual rated current and application duty must still be evaluated before final selection.

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35. Advantage — No Unnecessary Dynamic-Braking Hardware

For applications that do not need dynamic braking, the JN configuration can be an appropriate choice.

There is no reason to specify braking hardware simply because it exists as an option.

For a large pump, fan or blower that normally decelerates gradually, the braking requirement may be relatively low.

In such an application, the no-DB configuration can provide the necessary motor-control functions without selecting the internal braking transistor version.

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36. Advantage — Embedded I/O

Embedded I/O can reduce the amount of additional hardware needed for basic machine integration.

This can help simplify:

• Control wiring
• Panel layout
• Installation
• Troubleshooting
• Machine integration
• Maintenance

For standard machine functions, having the necessary I/O directly associated with the drive can be very practical.

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37. Advantage — Process Control

PID functionality makes the drive useful for automated process-control applications.

Instead of simply receiving a fixed speed command, the drive can participate in a feedback loop.

This is useful for:

• Pressure control
• Flow control
• Airflow control
• Circulation control
• Process regulation

The drive can therefore be integrated more closely into the machine’s operating logic.

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38. Advantage — 690 VAC Industrial Compatibility

The 690 VAC rating is an important advantage in facilities using high-voltage motor systems.

It allows the drive to be applied to larger industrial motor installations without moving the motor system to a lower voltage class.

Potential environments include:

• Manufacturing plants
• Process facilities
• Large utility systems
• Water systems
• Industrial ventilation
• Production machinery
• Material-handling systems

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39. Five Recommended Same-Series or Closely Related Models

The following models are useful alternatives within the same PowerFlex 753 690 VAC family.

These models provide a convenient progression around the 46 A configuration.

The 20F1ANF046JA0NNNNN is particularly important because it has essentially the same primary electrical rating but adds the internal dynamic-braking transistor.

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40. Recommended Alternative — 20F1ANF030JN0NNNNN

This model is a lower-capacity version in the same general configuration family.

This is a good choice when the motor load is significantly below the 46 A requirement.

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41. Recommended Alternative — 20F1ANF034JN0NNNNN

The 34 A version is one of the closest lower-capacity alternatives.

This model is appropriate when a 30 kW Normal Duty application does not require the additional 46 A capacity.

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42. Recommended Alternative — 20F1ANF046JA0NNNNN

This is the most direct alternative to the subject model.

If the machine needs dynamic braking, this is the most important alternative to consider.

The main motor-control ratings remain essentially the same, but the braking configuration changes.

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43. Recommended Alternative — 20F1ANF050JN0NNNNN

The 50 A model provides additional capacity.

This model becomes useful when the motor current exceeds the 46 A capacity.

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44. Recommended Alternative — 20F1ANF061JN0NNNNN

The 61 A model provides another step upward.

This model is useful when the 46 A drive is too small for the selected motor.

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45. Five Recommended Same-Brand Representative Models

The following models represent useful alternatives across the broader Allen-Bradley PowerFlex range.

The first three are particularly close if the application should remain within the PowerFlex 753 architecture.

The PowerFlex 755 represents a larger-capacity alternative for more demanding systems.

The PowerFlex 525 represents a more compact alternative for lower-power applications.

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46. Same-Series 690 VAC Power Progression

This progression shows the position of the 46 A model clearly.

It is above the 34 A configuration and below the 50 A configuration.

For applications that sit close to the 34 A limit, the 46 A model provides additional current margin.

For applications that are comfortably below 34 A, the smaller model may provide a more appropriately sized solution.

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47. Application Suitability

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48. Comparison With 20F1ANF046JA0NNNNN

This is the most important comparison for this particular model.

The electrical power ratings are essentially the same.

The major difference is the dynamic-braking configuration.

For a large pump or fan that normally decelerates slowly, the JN configuration can be a sensible selection.

For high-inertia machinery requiring frequent controlled stopping, the JA configuration deserves consideration.

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49. Comparison With 20F1ANF034JN0NNNNN

The 46 A version provides considerably more capacity than the 34 A version.

If the motor current approaches the upper range of the 34 A configuration, the 46 A model provides a useful step up.

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50. Comparison With 20F1ANF050JN0NNNNN

The 50 A model is a natural upgrade when the 46 A capacity is insufficient.

However, if the motor is comfortably within the 46 A rating, selecting the smaller model may provide a better-balanced system.

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51. Motor Selection Considerations

The motor should be evaluated using its complete nameplate data.

The rated motor current is particularly important.

A motor with a nominal rating close to 37 kW should not be selected solely because the drive has a 37 kW Normal Duty rating.

The actual motor current and application duty should be checked.

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52. Braking Requirements

Because this model does not have an internal dynamic-braking transistor, braking requirements deserve special attention.

The application should be evaluated for:

• Motor inertia
• Load inertia
• Maximum operating speed
• Deceleration time
• Number of stops
• Frequency of stopping
• Regenerative energy
• Required stopping performance

If the application requires substantial braking, an appropriate external braking solution or a drive configuration with internal dynamic-braking hardware may be more appropriate.

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53. Maintenance Recommendations

The cooling system deserves particular attention because this is a forced-air, high-power drive.

Dust accumulation around the cooling path can gradually reduce thermal performance.

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54. Thermal Management

The drive’s heat dissipation should be included in the cabinet thermal calculation.

A suitable installation should consider:

• Drive heat generation
• Cabinet heat generation
• Ambient temperature
• Internal cabinet temperature
• Cooling fan capacity
• Airflow direction
• Heat exchanger requirements
• Air filtration
• Equipment spacing

The drive should not be installed directly next to another major heat-producing device without evaluating the resulting cabinet temperature.

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55. Cabinet Space Planning

The approximate drive dimensions are:

665.5 mm × 308 mm × 346.4 mm

However, these figures should not be treated as the complete cabinet-space requirement.

Additional room may be needed for:

• Power cable routing
• Motor cable routing
• Control wiring
• Grounding
• Communication cables
• Ventilation
• Maintenance
• Component removal
• Door clearance
• Cable bending radius

For a professional industrial installation, the cabinet should be designed around the complete system rather than the drive dimensions alone.

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56. Why the 20F1ANF046JN0NNNNN Is a Good Choice

The main strength of this model is its balance between electrical capacity and configuration simplicity.

It provides:

690 VAC operation

46 A output capacity

37 kW Normal Duty

30 kW Heavy Duty

Frame 6 construction

Embedded I/O

PID capability

EMC filtering

CM jumper installed

Forced-air cooling

No internal dynamic-braking transistor

This combination makes it especially attractive for applications that need substantial motor capacity but do not require an integrated dynamic-braking transistor.

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57. Recommended Application Types

The model is particularly suitable for:

Industrial Pumps

The 37 kW Normal Duty rating provides substantial capacity for larger centrifugal and process pumps.

Fans

Industrial ventilation and cooling systems can benefit from variable-speed operation.

Blowers

The drive can regulate blower speed according to airflow demand.

Water Systems

Pressure and flow control can be implemented using suitable feedback and PID functions.

Process Machinery

Embedded I/O and flexible control functions make the drive suitable for machine integration.

Conveyors

The drive can provide adjustable speed and controlled acceleration, although braking requirements should be evaluated carefully.

Mixers

The Heavy Duty rating can be useful for constant-torque mixer applications.

Feeders

Adjustable motor speed can provide better material-flow control.

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58. Detailed Product Parameter Summary

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59. Overall Product Advantages

The Allen-Bradley 20F1ANF046JN0NNNNN is a strong choice for industrial applications requiring a 690 VAC, 46 A variable-frequency AC drive.

Its 37 kW Normal Duty capacity makes it particularly suitable for variable-torque applications.

Its 30 kW Heavy Duty capability gives it useful flexibility for constant-torque equipment.

The PowerFlex 753 platform also provides embedded I/O and process-control functionality, making the drive suitable for integration into automated industrial machinery.

The filtered configuration with the CM jumper installed provides a defined EMC/common-mode arrangement.

The forced-air Frame 6 construction is appropriate for the drive’s power level, while the open-type enclosure allows the unit to be integrated into a properly designed control cabinet.

The most important distinction of this particular catalog number is that it does not include an internal dynamic-braking transistor.

That can be an advantage rather than a disadvantage when the application does not require significant braking.

For example, large pumps, fans and blowers often operate with relatively gradual speed changes.

In those situations, the JN configuration can be a practical and well-balanced selection.

For high-inertia machinery requiring frequent rapid stops, however, the braking requirements should be reviewed carefully before selecting this configuration.

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60. Final Technical Assessment

The Allen-Bradley 20F1ANF046JN0NNNNN belongs to the PowerFlex 753 series and is designed for demanding industrial motor-control applications.

Its key ratings are:

690 VAC

3 Phase

46 A

37 kW Normal Duty

30 kW Heavy Duty

Frame 6

Its main configuration features are:

AC input with precharge

No DC terminals

Filtered EMC configuration

CM jumper installed

No internal dynamic-braking transistor

Embedded I/O

PID capability

Blank/no HIM

Forced-air cooling

Open-type enclosure

The approximate physical dimensions are 665.5 mm high × 308 mm wide × 346.4 mm deep, with an approximate weight of 38.6 kg.

For applications centered around pumps, fans, blowers, water systems and other variable-torque machinery, this model provides a strong combination of voltage capability, output current and process-control functionality.

For conveyors, mixers and other constant-torque equipment, its 30 kW Heavy Duty rating should be used as the principal power reference.

The most important selection issue is the lack of an internal dynamic-braking transistor.

If the machine has relatively normal acceleration and deceleration requirements, the 20F1ANF046JN0NNNNN can be a very practical configuration.

If the machine has high inertia, frequent rapid stopping or significant regenerative energy, the corresponding 20F1ANF046JA0NNNNN configuration should be considered instead.

Overall, the 20F1ANF046JN0NNNNN is best viewed as a high-capacity, 690 VAC, Frame 6 PowerFlex 753 drive for industrial applications where 46 A output capacity, 37 kW Normal Duty performance, 30 kW Heavy Duty capability, embedded I/O and process-control functions are required, while internal dynamic braking is not part of the required drive configuration.