Company Information
E-mail		[email protected]
Mobile		+8615980777398
Whatsapp		+8615980777398
WeChat		15980777398

Allen-Bradley 20G1ABC650AN4NNNNN PowerFlex 755 AC Drive — Detailed Product Specifications, Applications, Advantages and Related Models

The Allen-Bradley 20G1ABC650AN4NNNNN is a high-power PowerFlex 755 AC Drive designed for large industrial motor-control applications where high current capacity, adjustable-speed operation, network communication, and local operator access are important.

This model belongs to the PowerFlex 755 series and uses a 400 VAC, three-phase input, 650 A current class, and Frame 8 construction. Its principal power ratings are 400 kW Low Duty, 355 kW Normal Duty, and 315 kW Heavy Duty.

One of the most important characteristics of the AN4 configuration is its enhanced local operator interface. The model uses an Enhanced LCD Full Numeric IP66 / NEMA Type 4X/12 HIM, making it particularly useful where the operator interface needs additional environmental protection compared with a standard indoor operator interface.

The model is configured as an air-cooled, forced-air drive, with AC input with precharge, no DC terminals, Type 1 / IP20 protection, 600 mm deep MCC-style construction, filtering, CM jumper removed, and no standard dynamic braking.

Important model-status note: This exact AN4 catalog number is an earlier configuration of the PowerFlex 755 family. For replacement planning, the closely related 20G1ABC650JN4NNNNN is the corresponding later configuration to evaluate.

---

1. Basic Product Information

The dimensions and weight shown above are approximate Frame 8 reference values for the 600 mm deep MCC-style configuration. The final equipment footprint and shipping weight can vary depending on the complete configuration, accessories, enclosure arrangement, mounting structure, and packaging.

---

2. Brand and Product Series

Brand: Allen-Bradley

Product Family: PowerFlex

Product Series: PowerFlex 755

Model: 20G1ABC650AN4NNNNN

The PowerFlex 755 series is designed for demanding industrial motor-control applications. It is particularly suitable for large motors and machines where conventional fixed-speed starting does not provide enough control over acceleration, operating speed, process flow, torque, or energy consumption.

The 20G1ABC650AN4NNNNN represents a high-capacity Frame 8 configuration within the 400 VAC class.

Its 650 A current rating places it in the upper range of the commonly used 400 VAC PowerFlex 755 configurations.

---

3. Model Configuration Overview

The catalog number contains several important configuration identifiers.

650 — 650 A Current Class

The 650 section identifies the high-current drive class.

This gives the drive substantially more capacity than the 460 A, 540 A, and 567 A versions.

It is intended for large motors and high-power mechanical loads.

---

AN — Configuration Group

The AN configuration is associated with the earlier configuration generation and includes the CM jumper removed arrangement.

This is important when comparing the model with the later JN4 configuration.

---

4 — Enhanced LCD Full Numeric IP66 / NEMA Type 4X/12 HIM

The 4 identifies the enhanced operator-interface configuration.

The major advantage is the Enhanced LCD Full Numeric HIM with IP66 / NEMA Type 4X/12 protection.

This makes the operator interface more suitable for environments where the local keypad/display may be exposed to greater levels of dust, moisture, or industrial contamination than would normally be appropriate for an unprotected interface.

---

4. Detailed Electrical Parameters

---

5. 400 VAC Three-Phase Input

The 20G1ABC650AN4NNNNN is designed for a 400 VAC three-phase industrial power system.

Three-phase input is standard for high-power industrial drives because it provides an efficient way to transfer substantial electrical power into the drive.

The drive then converts the incoming electrical energy into controlled variable-frequency output for the motor.

This allows the motor to operate at different speeds according to the process requirement instead of simply running continuously at its rated speed.

For a complete installation, the actual incoming voltage, power capacity, upstream protection, short-circuit conditions, grounding system, and cable arrangement should all be checked against the specific installation requirements.

---

6. 650 A High-Power Configuration

The 650 A rating is one of the most important characteristics of this model.

This is not a small general-purpose motor drive.

It is designed for large industrial motors and equipment where the required current is substantially higher than the range of smaller drive configurations.

The 650 A class is particularly attractive for applications such as:

• Large centrifugal pumps
• Large cooling fans
• Industrial blowers
• Heavy-duty conveyors
• Bulk material handling
• Large mixers
• Process machinery
• Compressors
• Large production equipment
• Industrial utility systems

The high-current design also provides flexibility when the motor experiences changing process loads.

---

7. Low Duty, Normal Duty and Heavy Duty Ratings

The model provides three important power classifications.

The correct rating should be selected according to the actual motor current and mechanical load characteristics.

It is not recommended to select the drive simply by matching the motor’s nameplate kW value.

Motor current, starting torque, overload requirements, acceleration time, load inertia, operating speed, and duty cycle should all be considered.

---

8. 400 kW Low Duty Rating

The 400 kW Low Duty rating gives this model substantial capacity for variable-torque applications.

Typical examples include:

• Large centrifugal pumps
• Large fans
• Large blowers
• Cooling systems
• Air-handling equipment

These applications often benefit significantly from variable-speed operation.

Instead of operating the motor continuously at full speed and controlling the process through mechanical throttling, the drive can adjust motor speed according to the actual process demand.

---

9. 355 kW Normal Duty Rating

The 355 kW Normal Duty rating is well suited to general industrial machinery.

Potential applications include:

• Material-handling systems
• Conveyors
• Process machinery
• Large pumps
• Mixers
• Production machinery
• Industrial equipment

Normal Duty is often an appropriate reference point when the machine requires more torque than a typical variable-torque application but does not experience the most severe overload conditions.

---

10. 315 kW Heavy Duty Rating

The 315 kW Heavy Duty rating is particularly important for applications with higher torque demand.

Potential examples include:

• Heavy conveyors
• Large mixers
• High-inertia machines
• Material-handling equipment
• Machines requiring substantial acceleration torque
• Equipment with frequent starts and stops
• Mechanical systems with changing torque requirements

When using the Heavy Duty rating, the motor nameplate current should be checked carefully against the actual drive capability.

---

11. AC Input with Precharge

The model uses AC input with precharge.

Precharge is an important part of the drive’s internal power architecture.

The drive contains a substantial DC bus energy-storage system. During energization, the precharge system helps manage the initial charging process rather than allowing the DC bus capacitors to charge through an uncontrolled current surge.

This is especially important in a high-power drive.

The precharge arrangement contributes to a controlled startup of the drive’s internal power section.

---

12. No DC Terminals

The standard configuration has no external DC terminals.

This means the model should be considered an AC-input drive configuration rather than assuming that external DC-bus connections are available.

If a project requires a shared DC bus or regenerative DC-bus arrangement, the exact drive configuration must be evaluated before equipment selection.

---

13. Filtering and EMC Characteristics

The 20G1ABC650AN4NNNNN is configured as a filtered drive.

Filtering is particularly useful in industrial environments where high-power switching equipment operates alongside:

• PLC systems
• Control equipment
• Instrumentation
• Sensors
• Analog signals
• Communication networks
• Other drives
• Measurement equipment

The filtering arrangement helps manage conducted electrical noise.

However, filtering should always be combined with proper installation practices.

Important considerations include:

• Grounding
• Shielding
• Cabinet bonding
• Motor cable routing
• Control cable separation
• Network cable routing
• Motor frame grounding

---

14. CM Jumper Removed

The model has the CM jumper removed.

This configuration affects common-mode electrical behavior and should be considered together with the grounding and EMC strategy of the entire installation.

The correct configuration depends on the electrical system, motor, cable construction, grounding arrangement, and application requirements.

The CM jumper should therefore not be treated as a simple configuration detail that can be changed without considering the rest of the installation.

---

15. Dynamic Braking

The standard model configuration provides no dynamic braking.

This means that a separate braking arrangement is not included as part of the standard catalog configuration.

This is generally acceptable for many applications with relatively gradual acceleration and deceleration requirements.

However, special consideration is needed for high-inertia machinery.

Potentially demanding applications include:

• Large conveyors
• Large fans
• High-inertia rotating machines
• Centrifuges
• Large rolls
• Heavy material-handling systems
• Rapid stopping machinery

If substantial regenerative energy is produced during deceleration, the braking requirements should be evaluated separately.

---

16. Embedded EtherNet/IP

The drive includes embedded EtherNet/IP.

This provides an important advantage for modern industrial automation systems.

The drive can be incorporated into a networked control architecture where the control system can exchange operating information with the drive.

Typical information includes:

• Start and stop commands
• Speed reference
• Actual speed
• Output frequency
• Current
• Drive status
• Fault information
• Warning information
• Diagnostic information

This is especially useful when several high-power drives operate as part of the same production process.

---

17. Enhanced LCD Full Numeric HIM

The Enhanced LCD Full Numeric HIM is one of the defining characteristics of the AN4 configuration.

It provides a local operator interface for commissioning, monitoring, parameter adjustment, and troubleshooting.

The interface is particularly useful during:

• Initial startup
• Motor testing
• Commissioning
• Maintenance
• Troubleshooting
• Fault investigation
• Parameter verification
• Local diagnostics

Instead of depending entirely on a remote PLC or engineering workstation, maintenance personnel can interact directly with the drive.

---

18. IP66 / NEMA Type 4X/12 HIM

The AN4 configuration provides a more protected operator interface compared with a basic local HIM.

The IP66 / NEMA Type 4X/12 protection makes the interface better suited to demanding industrial environments.

This is useful where the operator interface may encounter:

• Dust
• Industrial dirt
• Moisture
• Water exposure
• Cleaning operations
• Industrial contamination

The protection rating applies to the appropriately configured HIM/interface and should not be interpreted as changing the overall IP20 rating of the complete drive assembly.

The main drive itself remains a Type 1 / IP20, 600 mm deep MCC-style configuration.

---

19. Product Introduction

The Allen-Bradley 20G1ABC650AN4NNNNN is a high-power variable frequency drive designed for large industrial motor-control applications.

Its combination of 650 A current capability, 400 kW Low Duty capacity, 355 kW Normal Duty capacity, and 315 kW Heavy Duty capacity makes it suitable for substantial mechanical loads.

The drive uses forced-air cooling, allowing it to handle high electrical power within a large Frame 8 platform.

The embedded EtherNet/IP capability makes it suitable for networked automation systems, while the Enhanced LCD Full Numeric IP66 / NEMA Type 4X/12 HIM gives maintenance personnel convenient local access to the drive.

The 600 mm deep MCC-style format is particularly relevant for large industrial electrical rooms and MCC installations where physical cabinet depth is an important design consideration.

---

20. Mechanical Parameters

Because this is a large Frame 8 drive, handling and installation should be planned carefully.

A nominal weight of approximately 623 kg requires suitable lifting and transportation equipment.

The actual shipping weight can be higher depending on packaging and accessories.

---

21. Physical Size and Installation Requirements

The approximate drive dimensions are:

2102 mm high × 606 mm wide × 600 mm deep

This is a substantial piece of electrical equipment.

The nominal dimensions should not be treated as the complete required installation space.

Additional clearance may be necessary for:

• Incoming power cables
• Motor cables
• Cable bending radius
• Control wiring
• Network cables
• Grounding connections
• Ventilation
• Maintenance
• Component replacement
• Door access
• Cooling airflow

The electrical room should also provide sufficient access for moving a unit weighing hundreds of kilograms into position.

---

22. Cooling and Thermal Management

The drive uses forced-air cooling.

For a high-power 650 A drive, thermal management is extremely important.

The installation should provide adequate airflow and prevent hot exhaust air from being recirculated back into the drive.

The following conditions should be monitored:

• Ambient temperature
• Cabinet temperature
• Airflow
• Cooling fan operation
• Dust accumulation
• Air passage blockage
• Ventilation system performance
• Hot-air recirculation

A clean and properly ventilated electrical environment can significantly improve operating reliability.

---

23. Main Application Areas

23.1 Large Pump Systems

Large centrifugal pumps are among the most suitable applications.

The drive can regulate motor speed according to process requirements.

Typical installations include:

• Water treatment
• Industrial water circulation
• Cooling-water systems
• Process water
• Wastewater
• Industrial utilities
• Large pumping stations

Variable-speed operation can provide better process control than continuously operating a motor at full speed.

---

23.2 Large Fans

Large industrial fans can use variable-speed control to adjust airflow.

Applications include:

• Industrial ventilation
• Furnace systems
• Exhaust systems
• Dust collection
• Cooling systems
• Large air-handling equipment
• Process ventilation

---

23.3 Industrial Blowers

Large blowers can benefit from adjustable-speed control.

Typical applications include:

• Process air
• Waste treatment
• Pneumatic conveying
• Combustion air
• Dust extraction
• Industrial ventilation

---

23.4 Heavy Conveyor Systems

The high current capability makes this model well suited to large conveyors.

The drive can control acceleration and operating speed, helping reduce mechanical shock on:

• Conveyor belts
• Gearboxes
• Couplings
• Bearings
• Shafts
• Mechanical structures

Typical industries include:

• Mining
• Cement
• Steel
• Aggregate
• Ports
• Bulk material handling

---

23.5 Large Mixers

Large mixers can experience significant torque changes as the material being processed changes.

The drive provides adjustable speed control that can help match motor operation to the process.

Possible applications include:

• Chemical processing
• Mineral processing
• Material blending
• Industrial mixing
• Production machinery

---

23.6 Compressors

The drive can be suitable for selected large compressor applications.

The exact suitability depends on:

• Compressor type
• Motor current
• Required speed range
• Starting torque
• Acceleration time
• Process requirements
• Duty cycle

---

23.7 Large Production Machinery

The 20G1ABC650AN4NNNNN can also be used as part of large automated production machinery.

EtherNet/IP communication can allow the drive to become part of a broader machine-control system.

---

24. Main Product Advantages

24.1 High Current Capacity

The 650 A rating provides substantial electrical capacity for large motors.

It allows this model to handle applications that are beyond the practical range of smaller drive configurations.

---

24.2 High Power Capability

The combination of:

400 kW Low Duty

355 kW Normal Duty

315 kW Heavy Duty

provides a broad application range.

---

24.3 Local Operator Control

The Enhanced LCD Full Numeric HIM provides convenient local access.

This is particularly valuable during maintenance and commissioning.

---

24.4 Protected HIM Interface

The IP66 / NEMA Type 4X/12 HIM configuration provides additional protection for the operator interface.

This is useful in industrial environments where the interface may be exposed to dust, moisture, or cleaning conditions.

---

24.5 Embedded EtherNet/IP

Integrated networking simplifies connection to a centralized automation system.

It allows the drive to become part of a larger machine or process-control architecture.

---

24.6 Forced-Air Cooling

Forced-air cooling is a familiar approach for high-power industrial drives.

It eliminates the need for a liquid-cooling system while providing the airflow required for high-power operation.

---

24.7 Flexible Duty Selection

The Low Duty, Normal Duty, and Heavy Duty ratings allow the drive to be evaluated against different application types.

This makes it more flexible than selecting a drive based on one single motor-power figure.

---

25. Five Same-Series or Closely Related Models

The following models are useful alternatives or comparison models.

The five models above are particularly useful because they remain close to the same high-power PowerFlex 755 configuration.

The 567 A version is a lower-current alternative.

The 650 A AN0 version removes the local HIM.

The 650 A AN2 version retains the standard Enhanced LCD configuration.

The 650 A JN4 version is the closest later configuration to the AN4 model.

The 750 A model provides additional Low Duty and Normal Duty capacity.

---

26. Five Popular Allen-Bradley Models for Comparison

These models cover a useful range of large 400 VAC PowerFlex 755 applications.

The 460 A model is appropriate when the motor current requirement is lower.

The 540 A and 567 A versions provide intermediate capacity.

The 650 A version is suitable for larger motor loads.

The 750 A configuration provides additional current and power capacity for applications approaching the upper range of the 650 A class.

---

27. 20G1ABC650AN4NNNNN vs. 20G1ABC650AN2NNNNN

The two models have essentially the same basic electrical capacity.

The main difference is the protection level and configuration of the operator interface.

The AN4 version is the better choice when the local operator interface requires increased environmental protection.

---

28. 20G1ABC650AN4NNNNN vs. 20G1ABC650AN0NNNNN

The AN0 version is designed for installations that do not require a local HIM.

The AN4 version is more suitable when local operator access is required and the interface needs increased environmental protection.

---

29. 20G1ABC650AN4NNNNN vs. 20G1ABC650JN4NNNNN

This is one of the most important comparisons for replacement planning.

The JN4 model is the most directly related later configuration.

The key difference is the CM jumper arrangement.

The AN4 model uses the CM jumper removed configuration, while the JN4 model uses the CM jumper installed configuration.

When replacing an existing AN4 unit, the complete electrical installation should be checked rather than assuming that the later catalog number is automatically interchangeable in every application.

---

30. 20G1ABC650AN4NNNNN vs. 20G1ABC567AN4NNNNN

The 650 A configuration provides significantly more capacity.

The increase is especially noticeable in the Heavy Duty rating, rising from approximately 250 kW to 315 kW.

For applications with higher motor current or greater torque demand, the 650 A configuration is therefore more suitable.

---

31. 20G1ABC650AN4NNNNN vs. 20G1ABC750AN4NNNNN

The 750 A configuration offers additional current capacity.

It also increases the Low Duty rating from 400 kW to 450 kW and the Normal Duty rating from 355 kW to 400 kW.

The Heavy Duty rating remains in the same 315 kW class.

---

32. Recommended Application Matching

---

33. Installation Considerations

The physical scale of this drive means that installation should be planned before delivery.

With an approximate equipment weight of 623 kg, suitable lifting equipment is required.

The installation structure must be able to support the actual drive weight.

The electrical room should also have sufficient access for:

• Transportation
• Positioning
• Cable installation
• Maintenance
• Cooling
• Inspection
• Component replacement

The approximately 2102 × 606 × 600 mm dimensions describe the general drive envelope, not necessarily the complete space required for safe maintenance.

---

34. Power Cable Considerations

A high-current drive requires careful attention to incoming and outgoing power connections.

The installation should consider:

• Cable ampacity
• Cable routing
• Cable bending radius
• Terminal temperature
• Grounding conductors
• Motor cable length
• EMC requirements
• Physical separation between power and control wiring

The 650 A current class means that power cabling and upstream equipment need to be sized according to the actual installation conditions.

---

35. Motor Cable Considerations

The motor cable installation can influence the overall performance of a variable-frequency drive system.

Attention should be paid to:

• Cable construction
• Cable length
• Shielding
• Grounding
• Motor insulation
• Cable routing
• Separation from sensitive signal wiring
• EMC performance

This becomes increasingly important as motor power and cable length increase.

---

36. Maintenance Advantages

The Enhanced LCD Full Numeric HIM makes this model particularly convenient for maintenance personnel.

During troubleshooting, technicians can inspect the drive directly.

Typical maintenance activities include:

• Checking drive status
• Reviewing faults
• Checking warnings
• Verifying parameters
• Monitoring operating values
• Confirming motor operation
• Checking network status
• Performing commissioning procedures

The protected HIM configuration also provides a practical advantage when the operator interface is located in a demanding industrial environment.

---

37. Why the 20G1ABC650AN4NNNNN Is Attractive

The model offers a strong combination of high-power capacity and operator functionality.

Its main strengths include:

650 A current capacity

400 kW Low Duty

355 kW Normal Duty

315 kW Heavy Duty

400 VAC three-phase input

Frame 8 construction

Forced-air cooling

Embedded EtherNet/IP

Enhanced LCD Full Numeric HIM

IP66 / NEMA Type 4X/12 HIM

AC input with precharge

No external DC terminals

Filtered configuration

CM jumper removed

600 mm deep MCC-style design

This makes it a strong candidate for large industrial motor applications where both electrical capacity and local operator access are important.

---

38. Technical Specification Summary

---

39. Overall Evaluation

The Allen-Bradley 20G1ABC650AN4NNNNN is a substantial high-power AC drive intended for demanding industrial motor-control applications.

Its 650 A current class and 400/355/315 kW Low Duty, Normal Duty and Heavy Duty ratings give it enough capacity for a wide range of large industrial equipment.

The 400 VAC three-phase input and Frame 8 construction place it firmly in the high-power industrial drive category.

The forced-air cooling system provides a conventional and practical thermal-management approach for large electrical equipment.

The integrated EtherNet/IP capability makes the drive suitable for networked automation architectures, while the Enhanced LCD Full Numeric HIM provides local access for commissioning, troubleshooting, maintenance, and parameter adjustment.

The biggest distinguishing feature of the AN4 configuration is the IP66 / NEMA Type 4X/12 protected HIM.

That makes the model particularly attractive when the local operator interface needs additional protection against industrial environmental conditions.

The main technical characteristics can therefore be summarized as follows:

• 650 A high-current configuration
• 400 kW Low Duty
• 355 kW Normal Duty
• 315 kW Heavy Duty
• 400 VAC
• Three-phase input
• Frame 8
• Forced-air cooling
• AC input with precharge
• No DC terminals
• Filtered configuration
• CM jumper removed
• No standard dynamic braking
• Embedded EtherNet/IP
• Enhanced LCD Full Numeric HIM
• IP66 / NEMA Type 4X/12 HIM
• Type 1 / IP20 drive enclosure
• 600 mm deep MCC-style construction
• Approximately 2102 × 606 × 600 mm
• Approximately 623 kg

For large pumps, fans, blowers, conveyors, compressors, mixers, material-handling systems, and process machinery, the 20G1ABC650AN4NNNNN offers a combination of high electrical capacity, network connectivity, local operator access, and protected HIM functionality that makes it well suited to demanding industrial installations.

For a replacement or new-project selection, the closest models to compare are 20G1ABC650JN4NNNNN, 20G1ABC650AN2NNNNN, 20G1ABC650AN0NNNNN, 20G1ABC567AN4NNNNN, and 20G1ABC750AN4NNNNN. The final selection should be based on motor nameplate current, duty cycle, torque requirements, braking requirements, environmental conditions, control architecture, and the required operator-interface configuration.