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Allen-Bradley 20G14NF012JN0NNNNN PowerFlex 755 AC Drive – Complete Product Overview, Specifications, Applications, Advantages and Related Models

1. Product Introduction

The Allen-Bradley 20G14NF012JN0NNNNN is a PowerFlex 755 AC Drive designed for industrial motor-speed control and integration into larger automation systems.

This particular model is a relatively compact member of the PowerFlex 755 family compared with the larger high-power versions, but it still provides the same general industrial-drive architecture associated with the series.

The unit is designed for a 690 VAC, three-phase system, with a 12 A output-current rating, 7.5 kW normal-duty capacity, and 5.5 kW heavy-duty capacity. It uses DC input with precharge, forced-air cooling, an open IP20/IP00 enclosure arrangement, and a Frame 6 mechanical configuration.

The catalog configuration also specifies filtered operation with the CM jumper installed, no dynamic-braking transistor, and a blank configuration without a HIM interface. These details are important because they distinguish this complete catalog number from other drives that may have the same basic voltage and current rating.

The 20G14NF012JN0NNNNN is particularly useful in applications where the motor is not extremely large but the system still benefits from the control flexibility, networking capability, diagnostics, and industrial architecture of the PowerFlex 755 platform.

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2. Basic Product Parameters

Parameter	Specification
Model	20G14NF012JN0NNNNN
Brand	Allen-Bradley
Series	PowerFlex 755
Product family	PowerFlex 750-Series AC Drives
Product type	AC Variable Frequency Drive
Drive configuration	PowerFlex 755 AC Packaged Drive
Input type	DC Input with Precharge
Voltage class	690 VAC
DC bus class	Approximately 932 VDC nominal
Phase	3-phase
Output current	12 A
Normal-duty power	7.5 kW
Heavy-duty power	5.5 kW
Normal-duty current	12 A continuous
Normal-duty 1-minute current	13.2 A
Normal-duty 3-second current	18 A
Heavy-duty current	9 A continuous
Heavy-duty 1-minute current	13.5 A
Heavy-duty 3-second current	18 A
Cooling	Forced air
Protection / construction	IP20/IP00, NEMA/UL Open Type
Frame size	Frame 6
EMC/filter configuration	Filtered
CM jumper	Installed
Dynamic braking	None
HIM	Blank / No HIM
Embedded communication	Embedded EtherNet/IP
Typical motor size	Approximately 7.5 kW ND / 5.5 kW HD
Dimensions	Approx. 665.5 × 308 × 346.4 mm, H × W × D
Weight	Approx. 38.6 kg
Installation	Cabinet / enclosure integration
Cooling method	Forced-air cooling

The normal-duty and heavy-duty current figures are useful when deciding whether the drive is appropriate for a particular motor. The published selection data gives the 20G14NF012JN0NNNNN a 12 A normal-duty continuous rating, 13.2 A for one minute, and 18 A for three seconds. In heavy-duty operation, the corresponding values are 9 A continuous, 13.5 A for one minute, and 18 A for three seconds.

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3. Brand and Series

Brand

Allen-Bradley

Series

PowerFlex 755

Product Family

PowerFlex 750-Series AC Drives

Product Category

Industrial AC Variable Frequency Drive

The PowerFlex 755 family is intended for industrial motor-control applications where adjustable speed, motor control, diagnostics, communication, and system integration are important.

The 20G14NF012JN0NNNNN is a 690 VAC common-bus / DC-input PowerFlex 755 configuration rather than a conventional low-voltage AC-input drive.

This distinction is important when designing or replacing a drive because the DC-input architecture affects the electrical system around the drive.

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4. What Makes the 20G14NF012JN0NNNNN Different?

The most important feature of this particular model is the combination of 690 VAC-class system capability and DC input with precharge.

The drive is intended for a nominal 932 VDC common-bus environment, which makes it especially relevant to industrial systems where multiple drives may share a common DC bus or where the power architecture is designed around a DC link.

This is different from simply connecting a small VFD directly to a conventional three-phase AC supply.

The precharge arrangement is important because the drive’s DC bus contains significant stored electrical energy.

For this reason, installation and servicing should follow appropriate electrical isolation and discharge procedures.

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5. 12 A Output Rating

The 12 A output rating places this model toward the smaller end of the PowerFlex 755 690 VAC common-bus range.

The normal-duty power rating is 7.5 kW, while the heavy-duty rating is 5.5 kW.

This makes it appropriate for small-to-medium industrial motors where the application still benefits from the PowerFlex 755 platform.

Typical motor sizes in this range can include motors used for pumps, fans, conveyors, machine tools, mixers, material handling, and general industrial machinery.

The actual motor selection should always be based on the motor nameplate current and application duty rather than simply matching the motor’s kW value.

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6. 690 VAC Three-Phase Operation

The 690 VAC rating is one of the most significant aspects of this model.

A 690 VAC motor system is often used in industrial environments where higher motor voltage is desirable for medium-power equipment.

Operating at a higher voltage can reduce current for a given motor power compared with lower-voltage systems.

This can provide benefits in larger industrial electrical installations, particularly where long motor cables, centralized power distribution, or multiple drives are involved.

However, 690 VAC equipment requires appropriate electrical insulation, clearances, wiring, protective equipment, grounding, and maintenance procedures.

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7. DC Input with Precharge

The 20G14NF012JN0NNNNN is specified with DC Input with Precharge.

This makes it particularly relevant to common-bus applications.

A common DC bus can allow several drives to share a common DC power source.

Depending on the overall system architecture, regenerative energy from one drive can potentially be used elsewhere on the DC bus rather than being dissipated independently.

This type of architecture can be useful in machines with multiple coordinated motors.

Examples include:

• Multi-axis machinery
• Conveyor systems
• Material-handling systems
• Production lines
• Coordinated process machinery
• Machines with multiple drive sections

The DC bus system must nevertheless be designed correctly, including precharge, disconnecting, protection, grounding, DC bus voltage, and energy management.

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8. Forced-Air Cooling

The drive uses forced-air cooling.

Cooling is particularly important for a VFD because power semiconductors and other electronic components generate heat during normal operation.

The cooling fan and airflow path should remain unobstructed.

The surrounding cabinet should also be designed so that hot air does not simply circulate around the drive.

A clean and stable thermal environment can contribute significantly to long-term drive reliability.

In dusty environments, regular inspection is recommended because dust accumulation can reduce airflow and increase operating temperature.

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9. Open-Type Construction

The 20G14NF012JN0NNNNN uses an IP20/IP00, NEMA/UL Open Type configuration.

This means that the drive is intended to be installed inside an appropriate electrical enclosure or cabinet.

The open design gives engineers flexibility to build a complete control system around the drive.

For example, a cabinet may contain:

• Main disconnects
• Circuit protection
• Drive equipment
• PLC hardware
• Control transformers
• Terminal blocks
• Network equipment
• Motor protection
• Safety components
• Braking components
• Cooling equipment

The final enclosure must provide the environmental protection required by the installation.

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10. Filtering and CM Jumper

The catalog configuration specifies filtering with the CM jumper installed.

This is relevant when considering electromagnetic compatibility and common-mode behavior.

Filtering can help manage high-frequency electrical noise associated with inverter switching.

The CM jumper configuration is also an important part of the original factory configuration.

For replacement work, it should not be ignored.

A replacement drive with a different filtering or jumper configuration may require different installation practices, grounding arrangements, or motor-cable considerations.

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11. No Dynamic Braking

This particular catalog configuration is specified with no dynamic-braking transistor.

That does not mean that the drive cannot be used in every application requiring controlled deceleration.

It means that the exact drive configuration does not include the specified internal dynamic-braking transistor arrangement.

Applications with significant regenerative energy should therefore be evaluated carefully.

Examples include:

• High-inertia machinery
• Rapidly decelerated conveyors
• Hoists
• Centrifuges
• Large rotating machinery
• Machinery with frequent speed changes

Where regenerative energy is substantial, an appropriate braking or regenerative architecture should be engineered separately.

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12. No HIM Configuration

The catalog number specifies a blank configuration with no HIM.

This means the drive is not ordered with the standard local human-interface module as part of this catalog configuration.

That can be perfectly practical in automated systems.

Many industrial installations are operated and monitored through a PLC, HMI, supervisory system, or network rather than by using a local drive keypad.

However, commissioning and maintenance procedures should take into account how parameters, faults, and diagnostic information will be accessed.

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13. Product Applications

13.1 Pumps

The 20G14NF012JN0NNNNN is suitable for many small and medium industrial pump applications.

Typical examples include:

• Circulation pumps
• Cooling pumps
• Process-water pumps
• Transfer pumps
• Utility pumps
• Water-treatment equipment

Variable-speed operation can allow the pump output to follow actual process demand.

For example, a process may require high flow during one production stage and lower flow during another.

Instead of continuously operating at full speed, the motor can be controlled to match the process requirement.

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14. Fan and Blower Applications

Fans and blowers are another natural application for a variable-frequency drive.

Possible applications include:

• Industrial ventilation
• Exhaust fans
• Cooling fans
• Process-air systems
• Dust-collection systems
• Small blowers
• Machine cooling

The ability to vary motor speed can provide better control over airflow.

For variable-torque loads, reducing speed can also provide significant energy-saving opportunities when the process does not require maximum airflow.

Actual energy savings depend on the mechanical system, operating profile, motor efficiency, and process requirements.

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15. Conveyor Applications

The drive can be used for smaller conveyor systems where the motor falls within the 7.5 kW normal-duty rating.

A controlled acceleration profile can reduce sudden mechanical stress.

This is useful for conveyors carrying:

• Boxes
• Packages
• Components
• Light bulk material
• Production parts

The drive can also make it easier to coordinate conveyor speed with upstream and downstream machinery.

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16. Material Handling

Small and medium material-handling equipment can benefit from variable-speed control.

Typical examples include:

• Feed conveyors
• Transfer conveyors
• Rollers
• Small hoisting-related machinery
• Sorting equipment
• Packaging machinery
• Material positioning systems

The exact suitability depends on torque requirements and braking requirements.

Applications involving rapid deceleration or vertical loads require additional engineering attention.

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17. Mixers and Agitators

Small industrial mixers and agitators can also benefit from the 20G14NF012JN0NNNNN.

The drive can provide controlled acceleration and adjustable operating speed.

This is particularly useful when the process requires different speeds during different stages of production.

For example, a machine may use a slow speed during initial loading and a higher speed during mixing.

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18. General Machinery

The drive can also be used for general industrial machinery.

Examples include:

• Machine tools
• Production machines
• Packaging machines
• Small process machines
• Material feeders
• Industrial handling equipment
• Assembly equipment
• Automated machinery

The PowerFlex 755 platform becomes particularly useful when the machine requires integration with a larger control system rather than simply basic speed control.

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19. Main Advantages

19.1 High-Voltage Industrial Capability

The 690 VAC class gives this model an advantage in industrial installations that use high-voltage motor systems.

It is particularly appropriate when the machine’s electrical architecture is designed around 690 VAC motors or a 932 VDC nominal common-bus system.

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19.2 Compact PowerFlex 755 Configuration

Although the PowerFlex 755 family includes very large drives, the 20G14NF012JN0NNNNN provides the same general family architecture in a much smaller power range.

This can be useful for plants that want to standardize on the PowerFlex 755 platform across machines with different motor sizes.

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19.3 Common-Bus Compatibility

The DC-input architecture is a major advantage for systems using a common DC bus.

Multiple drives can potentially be incorporated into a coordinated DC power system.

This can be useful in machinery where several motors operate together.

The final DC-bus design must be engineered according to the total system power and regenerative behavior.

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19.4 Adjustable Speed

The drive allows the motor speed to be controlled rather than simply operating at a fixed speed.

This provides greater flexibility for production processes.

It can also reduce mechanical shock during acceleration and deceleration.

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19.5 Controlled Acceleration

Controlled acceleration can help reduce mechanical stress.

Instead of allowing the motor to accelerate as quickly as possible, the drive can use an appropriate acceleration profile.

This can improve machine behavior and reduce stress on mechanical components.

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19.6 Industrial Communication

The catalog configuration is identified as a PowerFlex 755 drive with embedded EtherNet/IP.

This makes it suitable for systems where the drive needs to exchange information with a larger industrial control architecture.

Typical information can include:

• Speed reference
• Actual speed
• Current
• Status
• Fault information
• Control commands
• Drive operating data

This can reduce the need for large amounts of hardwired control wiring.

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20. Dimensions and Weight

The 20G14NF012JN0NNNNN uses a Frame 6 configuration.

For engineering and cabinet planning, the approximate dimensions can be treated as follows:

Mechanical Parameter	Approximate Value
Model	20G14NF012JN0NNNNN
Frame	Frame 6
Height	Approx. 665.5 mm
Width	Approx. 308 mm
Depth	Approx. 346.4 mm
Overall dimensions	Approx. 665.5 × 308 × 346.4 mm
Weight	Approx. 38.6 kg
Construction	Open type
Protection class	IP20/IP00
Cooling	Forced air
Installation	Vertical cabinet installation

The dimensions and weight should be treated as approximate planning values.

For a final enclosure design, lifting arrangement, transportation plan, or replacement project, the actual mechanical drawing for the exact configuration should be used.

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21. Five Same-Series or Closely Related Models

The following models are good comparison choices because they belong to the same 690 VAC DC-input PowerFlex 755 family.

Model	Voltage	Current	Normal-Duty Power	Heavy-Duty Power	Frame	Cooling	Approx. Dimensions	Approx. Weight
20G14NF015JN0NNNNN	690 VAC	15 A	11 kW	7.5 kW	Frame 6	Forced air	Approx. 665.5 × 308 × 346.4 mm	Approx. 38.6 kg
20G14NF020JN0NNNNN	690 VAC	20 A	15 kW	11 kW	Frame 6	Forced air	Approx. 665.5 × 308 × 346.4 mm	Approx. 38.6 kg
20G14NF030JN0NNNNN	690 VAC	30 A	22 kW	18.5 kW	Frame 6	Forced air	Approx. 665.5 × 308 × 346.4 mm	Approx. 38.6 kg
20G14NF050JN0NNNNN	690 VAC	50 A	45 kW	37 kW	Frame 6	Forced air	Approx. 665.5 × 308 × 346.4 mm	Approx. 38.6 kg
20G14NF082JN0NNNNN	690 VAC	82 A	75 kW	55 kW	Frame 6	Forced air	Approx. 665.5 × 308 × 346.4 mm	Approx. 38.6 kg

The 690 VAC PowerFlex 755 common-bus selection table shows a progression from the 12 A model through higher current configurations. For example, the 15 A version is rated at 11 kW normal duty and 7.5 kW heavy duty, while the 20 A version reaches 15 kW normal duty and 11 kW heavy duty. The 30 A and 50 A configurations increase the normal-duty capacity to 22 kW and 45 kW respectively.

For a larger machine, the 82 A model provides a significant increase in current and power capacity while remaining within the same general 690 VAC PowerFlex 755 common-bus family.

The physical dimensions listed for these related Frame 6 configurations should be considered approximate family-level planning values rather than a substitute for the exact mechanical drawing.

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22. Another Five Same-Brand Models

The following models provide a broader comparison across the Allen-Bradley drive range.

Model	Series	Voltage Class	Current / Power Class	Typical Application	Approx. Dimensions	Approx. Weight
20G14NF050JN0NNNNN	PowerFlex 755	690 VAC	50 A / 45 kW ND	Large pumps, fans, process equipment	Approx. 665.5 × 308 × 346.4 mm	Approx. 38.6 kg
20G14NF098JN0NNNNN	PowerFlex 755	690 VAC	98 A / 90 kW ND	Large pumps, conveyors, process machinery	Approx. 665.5 × 308 × 346.4 mm	Approx. 38.6 kg
20G14NF171JN0NNNNN	PowerFlex 755	690 VAC	171 A / 160 kW ND	Large industrial machinery	Approx. 881.5 × 430 × 349.6 mm	Approx. 72.6–108.9 kg
20G14NF212JN0NNNNN	PowerFlex 755	690 VAC	212 A / 200 kW ND	Heavy industrial drives	Approx. 881.5 × 430 × 349.6 mm	Approx. 72.6–108.9 kg
20G14NF263JN0NNNNN	PowerFlex 755	690 VAC	263 A / 250 kW ND	Large process and material-handling systems	Approx. 881.5 × 430 × 349.6 mm	Approx. 72.6–108.9 kg

The larger 690 VAC models follow the same general PowerFlex 755 common-bus architecture while increasing the available motor capacity substantially.

The 171 A configuration is identified as a Frame 7 unit in the published selection data, marking the transition into a larger mechanical size.

The 212 A and 263 A configurations are useful when the motor requirement is significantly larger than the 12 A starting point.

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23. 20G14NF012JN0NNNNN vs. 20G14NF015JN0NNNNN

These two models are very close in the same product range.

Parameter	20G14NF012JN0NNNNN	20G14NF015JN0NNNNN
Voltage	690 VAC	690 VAC
Normal-duty current	12 A	15 A
Normal-duty power	7.5 kW	11 kW
Heavy-duty current	9 A	12 A
Heavy-duty power	5.5 kW	7.5 kW
Frame	Frame 6	Frame 6
Input	DC with precharge	DC with precharge
Cooling	Forced air	Forced air
Construction	Open type	Open type
Approx. weight	38.6 kg	38.6 kg

If the motor’s operating current is comfortably below 12 A, the 20G14NF012JN0NNNNN can be a suitable selection.

If the motor approaches the upper end of the 12 A capability, moving to the 15 A configuration may provide more practical operating margin, provided the rest of the system is compatible.

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24. 20G14NF012JN0NNNNN vs. 20G14NF050JN0NNNNN

The difference becomes much more significant when comparing the 12 A model with the 50 A model.

Parameter	20G14NF012JN0NNNNN	20G14NF050JN0NNNNN
Voltage	690 VAC	690 VAC
Current	12 A	50 A
Normal-duty power	7.5 kW	45 kW
Heavy-duty power	5.5 kW	37 kW
Frame	Frame 6	Frame 6
Input	DC with precharge	DC with precharge
Cooling	Forced air	Forced air
Construction	Open type	Open type
Approx. weight	38.6 kg	38.6 kg

The 50 A model provides more than four times the current capacity of the 12 A version.

This makes it much more suitable for larger pumps, fans, conveyors, and process machinery.

The important lesson is that drive selection should follow the motor’s actual current and duty requirements.

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25. Typical Industrial System Architecture

A typical application using this drive may include:

Power System → DC Bus / Precharge → PowerFlex 755 Drive → Three-Phase Motor → Mechanical Load

The control side may then include:

PLC → Industrial Network → PowerFlex 755 → Motor

The operator interface can be connected to the control system so that the operator can adjust speed references, monitor machine status, and respond to alarms.

This type of architecture is particularly useful when several drives operate together.

For example, a production line may contain several motors with different speed requirements.

Each drive can control its own motor while the central control system coordinates the complete process.

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26. Maintenance Recommendations

The 20G14NF012JN0NNNNN should be included in a planned maintenance program.

The cooling fan should be inspected periodically.

Air passages should be kept clear.

The cabinet should be maintained in a clean condition.

Power connections should be inspected according to the applicable maintenance procedure.

Signs of overheating, abnormal noise, unusual vibration, repeated trips, or unexpected communication faults should be investigated.

Because this drive uses a DC bus architecture, maintenance personnel must also pay particular attention to stored electrical energy.

The DC bus should never be assumed to be safe simply because the incoming power has been disconnected.

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27. Installation Considerations

Before installation, the following points should be checked:

Item	Consideration
Motor voltage	Must be compatible with the drive system
Motor current	Must be within the selected drive rating
Motor power	Check both normal and heavy-duty requirements
DC bus voltage	Confirm system compatibility
Precharge	Confirm correct system architecture
Grounding	Follow the appropriate industrial grounding design
Motor cable	Correct conductor size and insulation
Cable length	Evaluate long-cable effects
Cabinet	Provide appropriate enclosure protection
Cooling	Ensure sufficient airflow
Network	Confirm required communication architecture
Braking	Evaluate regenerative energy
Motor speed	Confirm mechanical limits
Duty cycle	Check thermal loading
Maintenance access	Provide adequate service clearance

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28. Selection Advice

The 20G14NF012JN0NNNNN should be selected primarily according to the motor’s current requirement and the actual mechanical load.

If the application is a small fan, pump, conveyor, or process machine and the motor falls comfortably within the 7.5 kW normal-duty / 5.5 kW heavy-duty range, this model can be an appropriate choice.

If the motor has high starting torque or frequent overload conditions, the heavy-duty rating deserves particular attention.

If the motor is normally operated near the drive’s maximum current, selecting the next larger model may provide a better operating margin.

For variable-torque loads, the normal-duty rating may be the more relevant reference.

For constant-torque or more demanding loads, the heavy-duty rating should be evaluated carefully.

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29. Key Advantages at a Glance

Advantage	Description
690 VAC capability	Suitable for high-voltage industrial motor systems
12 A current rating	Appropriate for smaller PowerFlex 755 applications
7.5 kW ND rating	Good fit for normal-duty motor applications
5.5 kW HD rating	Supports more demanding heavy-duty operation
DC input	Suitable for common-bus architectures
Precharge	Supports controlled DC-bus energization
Forced-air cooling	Effective thermal management
Open construction	Flexible cabinet integration
Filtering	Helps address EMC considerations
Embedded EtherNet/IP	Convenient industrial communication
Frame 6	Compact compared with larger PowerFlex 755 frames
No HIM configuration	Appropriate for centrally controlled automated systems
PowerFlex 755 platform	Useful for standardized industrial drive architectures

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30. Overall Evaluation

The Allen-Bradley 20G14NF012JN0NNNNN is a specialized industrial AC drive for applications requiring 690 VAC operation and DC-input common-bus architecture.

Its 12 A output rating, 7.5 kW normal-duty capacity, 5.5 kW heavy-duty capacity, Frame 6 construction, forced-air cooling, open IP20/IP00 configuration, filtered input arrangement, and DC input with precharge give it a useful combination of compact size and industrial functionality.

The drive is particularly suitable for pumps, fans, blowers, conveyors, mixers, material-handling systems, and general automated machinery.

Its strongest advantage is not simply the 7.5 kW power rating.

The more important point is that this relatively small drive belongs to a larger PowerFlex 755 architecture capable of extending into much higher power ranges.

This can be valuable for facilities that want to standardize drive configuration and control philosophy across different machine sizes.

For example, a plant may use a 12 A unit on a small process pump, a 50 A unit on a larger fan, and a 171 A or 212 A unit on a large conveyor while retaining the same general drive-family architecture.

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31. Final Technical Summary

Category	Final Information
Model	20G14NF012JN0NNNNN
Brand	Allen-Bradley
Series	PowerFlex 755
Product family	PowerFlex 750-Series
Product type	Industrial AC Variable Frequency Drive
Voltage	690 VAC
DC bus	Approximately 932 VDC nominal
Phase	3-phase
Current	12 A
Normal-duty power	7.5 kW
Heavy-duty power	5.5 kW
Normal-duty overload	13.2 A for 1 min / 18 A for 3 s
Heavy-duty overload	13.5 A for 1 min / 18 A for 3 s
Input	DC Input with Precharge
Cooling	Forced air
Enclosure	IP20/IP00, NEMA/UL Open Type
Frame	Frame 6
Filtering	Filtered
CM jumper	Installed
Dynamic braking	None
HIM	Blank / No HIM
Communication	Embedded EtherNet/IP
Approx. dimensions	665.5 × 308 × 346.4 mm
Approx. weight	38.6 kg
Main applications	Pumps, fans, conveyors, mixers, process machinery
Installation	Electrical cabinet / enclosure
Main advantage	High-voltage PowerFlex 755 control in a relatively compact Frame 6 package

The 20G14NF012JN0NNNNN is therefore a good fit when a project needs a 7.5 kW-class industrial drive in a 690 VAC DC-input/common-bus system rather than a conventional low-voltage AC-input VFD.

Its compact Frame 6 format, 12 A rating, forced-air cooling, filtered configuration, embedded industrial communication, and PowerFlex 755 architecture make it suitable for a wide range of automated industrial machinery.

When selecting a replacement or designing a new system, the most important factors are not only horsepower or kW. The engineer should verify the motor current, voltage, load type, duty cycle, DC-bus arrangement, braking requirements, communication requirements, cabinet dimensions, cooling conditions, and complete catalog configuration.

For applications that already use the PowerFlex 755 family, the 20G14NF012JN0NNNNN can also provide a useful standardization point for smaller motors while larger related models can be used as the machine power requirements increase.