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1. Product Overview

The 20G11TC650JN0NNNNN is a high-power industrial AC variable frequency drive designed for controlling large three-phase AC motors.

It belongs to the PowerFlex 755 series and uses a large Frame 8 power section. The drive is designed for demanding industrial applications where high motor current, controlled acceleration, variable-speed operation, process control and industrial communication are required.

The model is intended for the 400 VAC class, three-phase industrial power supply. Its main ratings are 400 kW for light duty, 355 kW for normal duty and 315 kW for heavy duty.

The continuous normal-duty output current is 650 A, while the heavy-duty continuous current is 540 A.

The drive is air cooled, open type, filtered and equipped with an installed common-mode capacitor jumper. It also has embedded EtherNet/IP communication and does not include dynamic braking in this particular catalog configuration.

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2. Brand and Product Series

Item	Specification
Brand	Allen-Bradley
Product family	PowerFlex
Series	PowerFlex 755
Product type	Industrial AC Variable Frequency Drive
Drive category	High-power AC drive
Frame size	Frame 8
Cooling	Forced air / air cooled
Input	AC input with DC terminals
Input phase	Three phase
Voltage class	400 VAC
Communication	Embedded EtherNet/IP
Enclosure / construction	Open type
Filtering	Filtered
CM capacitor jumper	Installed
Dynamic braking	None
HIM	Blank / No HIM

The model is part of the 400 VAC Frame 8 section of the PowerFlex 755 product family.

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3. Main Technical Parameters

Parameter	Specification
Model	20G11TC650JN0NNNNN
Brand	Allen-Bradley
Series	PowerFlex 755
Product type	AC Variable Frequency Drive
Input voltage class	400 VAC
Nominal input voltage	400 VAC
Input phase	3 phase
Approx. input voltage range	360–440 VAC class
Normal-duty continuous output current	650 A
Light-duty continuous output current	750 A
Heavy-duty continuous output current	540 A
Light-duty power rating	400 kW
Normal-duty power rating	355 kW
Heavy-duty power rating	315 kW
Normal-duty 1-minute overload	Approx. 715 A
Normal-duty 3-second overload	Approx. 975 A
Light-duty 1-minute overload	Approx. 825 A
Light-duty 3-second overload	Approx. 1125 A
Heavy-duty 1-minute overload	Approx. 810 A
Heavy-duty 3-second overload	Approx. 975 A
Frame	Frame 8
Cooling	Forced air
Input configuration	AC input with DC terminals / precharge arrangement
Filtering	Filtered
CM capacitor jumper	Installed
Dynamic braking	None
Communication	Embedded EtherNet/IP
HIM	Blank / No HIM
Construction	Open type
Protection class commonly specified	IP20 / open-type installation
Operating temperature	Approximately -20 to +60 °C, application dependent
Approx. height	About 1900 mm class
Approx. width	About 850 mm class
Approx. depth	About 425 mm class
Approx. weight	About 454 kg / 1000 lb class
Installation	Industrial cabinet / suitable enclosure
Main applications	Pumps, fans, conveyors, blowers, process machinery and other large motors

The published product information identifies the model as a 650 A, 400 VAC, Frame 8 configuration with 400 kW light-duty, 355 kW normal-duty and 315 kW heavy-duty ratings. A listed equipment weight is approximately 1000 lb, equivalent to about 454 kg.

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4. Product Introduction

The 20G11TC650JN0NNNNN is designed to regulate the speed and torque of large three-phase AC motors.

Instead of connecting a large motor directly to a fixed-frequency electrical supply, the variable frequency drive controls the electrical output delivered to the motor.

The drive can change the motor’s operating frequency and voltage according to the requirements of the machine.

This makes it possible to control motor speed during:

• Starting
• Normal operation
• Acceleration
• Deceleration
• Low-speed operation
• Process changes
• Controlled stopping

For large industrial equipment, this type of control can provide considerably more flexibility than simple fixed-speed motor operation.

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5. Basic Operating Principle

The drive operates by converting and controlling electrical power between the industrial AC supply and the motor.

A simplified power flow is:

Three-Phase AC Supply

↓

Input Power Section

↓

Rectification / DC Bus

↓

Inverter Power Section

↓

Variable-Frequency Three-Phase Output

↓

Large AC Motor

↓

Industrial Mechanical Load

The control system determines the required operating condition.

The drive then controls the motor output according to programmed speed, torque, acceleration and process requirements.

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6. High-Current Capability

One of the most important characteristics of this model is its 650 A normal-duty output rating.

For a large industrial motor, current capacity is more important than simply looking at the motor’s kW rating.

The motor’s actual nameplate current must be compared with the selected duty rating.

The 20G11TC650JN0NNNNN provides:

Duty	Continuous Current	Power Rating
Light Duty	750 A	400 kW
Normal Duty	650 A	355 kW
Heavy Duty	540 A	315 kW

This gives the drive a broad operating range for large industrial machinery.

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7. Light-Duty Capability

The light-duty rating is approximately:

750 A / 400 kW

This rating is particularly relevant to applications where the load is relatively smooth and does not require the maximum heavy-duty overload capability.

Typical examples include:

• Large centrifugal pumps
• Large centrifugal fans
• Ventilation equipment
• Cooling systems
• Water circulation systems
• Large blowers

For these applications, the motor current and actual load profile should be checked before selecting the light-duty rating.

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8. Normal-Duty Capability

The normal-duty rating is:

650 A / 355 kW

This is the central rating associated with the model number.

Parameter	Normal Duty
Continuous current	650 A
1-minute overload	Approx. 715 A
3-second overload	Approx. 975 A
Rated power	355 kW

This rating is suitable for large industrial motors operating under substantial continuous load.

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9. Heavy-Duty Capability

The heavy-duty rating is:

540 A / 315 kW

Parameter	Heavy Duty
Continuous current	540 A
1-minute overload	Approx. 810 A
3-second overload	Approx. 975 A
Rated power	315 kW

Heavy-duty operation is more relevant to machinery that requires substantial torque or frequent temporary overloads.

Examples include:

• Heavy conveyors
• Material handling
• Large mixers
• High-inertia machinery
• Heavy process equipment
• Machines with difficult acceleration conditions

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10. Embedded EtherNet/IP Communication

The drive includes embedded EtherNet/IP communication.

This allows the drive to be integrated into an industrial automation system.

The controller can exchange operating commands and drive information over the industrial network.

Typical commands can include:

• Start
• Stop
• Enable
• Speed reference
• Direction
• Fault reset
• Operating mode

Typical information returned by the drive can include:

• Motor current
• Output frequency
• Drive status
• Fault status
• Warning status
• Operating condition
• Diagnostic information

This can reduce the amount of hardwired control required between the drive and the automation system.

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11. Main Applications

11.1 Large Pump Systems

The 20G11TC650JN0NNNNN is suitable for large pump systems where the motor current is within the drive’s applicable duty rating.

Typical applications include:

• Industrial water circulation
• Process pumps
• Cooling-water systems
• Large transfer pumps
• Water treatment
• Wastewater equipment
• Industrial fluid circulation

Variable-speed operation allows pump speed to follow actual process requirements.

This can be useful when flow demand changes during production.

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12. Large Fan Applications

Large fans can require substantial motor power.

The drive can control fan speed according to the required:

• Airflow
• Pressure
• Temperature
• Ventilation level
• Production demand

Typical applications include:

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

For centrifugal fans, variable-speed operation can also provide useful energy-saving potential when the process does not require full airflow continuously.

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13. Conveyor Applications

Large conveyors can place considerable mechanical demands on their drive motors.

Controlled acceleration allows the conveyor to reach operating speed gradually.

This can reduce sudden mechanical stress on:

• Belts
• Gearboxes
• Couplings
• Shafts
• Bearings
• Drive pulleys

Potential applications include:

• Bulk material handling
• Heavy production lines
• Material transfer systems
• Industrial processing
• Large manufacturing systems

The correct duty rating should be selected according to the conveyor’s starting torque and operating load.

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14. Blower Applications

Large industrial blowers can require high motor power and continuous operation.

Variable-speed control can allow the blower to operate according to the actual process requirement rather than continuously operating at maximum speed.

Applications may include:

• Industrial air systems
• Process blowers
• Wastewater aeration
• Furnace systems
• Material-processing systems
• Ventilation

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15. Compressor Applications

Large compressors can require considerable motor power.

The drive may be used where the compressor and motor are suitable for variable-speed operation.

Important parameters include:

• Minimum speed
• Maximum speed
• Motor current
• Starting torque
• Acceleration time
• Deceleration requirements
• Cooling requirements
• Load characteristics

Compressor applications should be evaluated using the compressor manufacturer’s motor and drive requirements.

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16. Mixer Applications

Large industrial mixers may require significant starting torque.

A variable frequency drive can provide a controlled acceleration profile.

This can reduce sudden mechanical loading during startup.

Potential applications include:

• Chemical processing
• Bulk material processing
• Industrial mixing
• Food processing equipment
• Manufacturing processes
• Large tank mixers

The actual motor current should be checked against the heavy-duty rating if the mixer experiences high starting torque.

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17. Main Product Advantages

Advantage	Practical Benefit
650 A normal-duty rating	Suitable for very large industrial motors
400 kW light-duty rating	Supports large fan and pump applications
355 kW normal-duty rating	Suitable for large continuous-load machinery
315 kW heavy-duty rating	Supports higher-torque applications
Frame 8 construction	Designed for high-power industrial equipment
Embedded EtherNet/IP	Simplifies integration into automation networks
Air cooling	Suitable for high-power industrial installations
Filtered configuration	Helps manage electrical-noise considerations
CM jumper installed	Provides the specified common-mode configuration
Variable-speed control	Allows process speed to follow actual demand
Controlled acceleration	Helps reduce mechanical shock
Controlled motor operation	Improves process flexibility
Large overload capability	Useful for transient load conditions

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18. Common-Mode Capacitor Jumper – J Configuration

The J in 20G11TC650JN0NNNNN is an important catalog configuration detail.

This model has the:

CM capacitor jumper installed

The corresponding A configuration has the jumper removed.

Model	CM Jumper Configuration
20G11TC650JN0NNNNN	Installed
20G11TC650AN0NNNNN	Removed

The J configuration is commonly described as the preferred configuration in the product description.

This distinction matters when replacing an existing drive because two models with the same voltage, current and power ratings can still have different filtering/common-mode configurations.

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19. Dynamic Braking

The catalog configuration specifies:

Dynamic braking: None

This should be considered carefully when the machine has substantial rotating inertia.

During deceleration, a motor can return energy to the drive’s DC bus.

Applications with rapid stopping or high inertia may therefore require a separate evaluation of the braking method.

Examples include:

• Large conveyors
• Large rollers
• High-inertia fans
• Centrifugal equipment
• Large rotating machinery

The absence of an internal dynamic-braking transistor in this configuration should not be overlooked during application engineering.

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20. Physical Dimensions

The Frame 8 construction is physically large.

For preliminary planning, the installation envelope can be considered approximately:

1900 mm × 850 mm × 425 mm

Mechanical Parameter	Approximate Value
Model	20G11TC650JN0NNNNN
Frame	Frame 8
Approx. height	1900 mm
Approx. width	850 mm
Approx. depth	425 mm
Construction	Open type
Cooling	Forced air
Weight	Approx. 454 kg

The dimensions should be regarded as preliminary planning values. The final mechanical drawing for the exact installation should be used for cabinet design, mounting and maintenance clearances.

The approximately 1000 lb / 454 kg weight figure is a useful planning value for this model, but lifting and floor-loading calculations should use the final equipment documentation for the actual supplied configuration.

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21. Installation Requirements

Because this is a high-power Frame 8 drive, installation requires substantially more space than a small machine-level inverter.

The installation should allow suitable access for:

• Incoming power connections
• Motor power connections
• Control wiring
• Network wiring
• Cooling airflow
• Maintenance
• Inspection
• Lifting and handling

Adequate ventilation is particularly important.

Hot exhaust air should not be allowed to circulate directly back into the cooling inlet.

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22. Cooling and Thermal Management

The drive uses forced-air cooling.

High-current semiconductor components generate considerable heat during operation.

Therefore, the installation should take into account:

• Ambient temperature
• Airflow
• Cooling-fan operation
• Cabinet ventilation
• Dust accumulation
• Air inlet temperature
• Hot-air discharge
• Clearance around ventilation openings

An installation with inadequate cooling can result in:

• Higher component temperature
• Thermal trips
• Reduced service life
• Increased maintenance requirements
• Unstable operation under heavy load

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23. Motor Selection

The motor should be selected using its complete nameplate information.

Motor Parameter	Importance
Rated voltage	Must be compatible with drive output
Rated current	Critical for drive sizing
Rated power	Used together with current and duty
Rated frequency	Required for motor configuration
Rated speed	Important for speed control
Power factor	Affects current requirements
Efficiency	Affects actual electrical loading
Service factor	Important for application evaluation
Motor type	Determines control requirements
Starting torque	Important for heavy-duty loads
Inertia	Important for acceleration/deceleration
Required speed range	Determines operating suitability

The motor should not be selected solely by comparing kW values.

For a large drive such as the 20G11TC650JN0NNNNN, motor nameplate current and application duty are especially important.

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24. Energy-Saving Potential

Variable-speed control can provide significant energy-saving potential in appropriate applications.

The potential is particularly attractive with centrifugal pumps and fans.

For example, if a fan only needs reduced airflow, operating the motor continuously at maximum speed may waste energy.

The drive can reduce motor speed to match the actual requirement.

Potential benefits include:

• Lower electrical consumption
• Reduced throttling losses
• Improved process control
• Lower mechanical stress
• Reduced wear
• More flexible operation

Actual savings depend on the complete mechanical system.

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25. Typical Control Architecture

A typical installation can be arranged as:

Three-Phase AC Supply

↓

Main Protection / Disconnect

↓

20G11TC650JN0NNNNN

↓

Large Three-Phase AC Motor

↓

Pump / Fan / Conveyor / Blower / Process Machine

The control system can be:

PLC / Industrial Controller

↓

EtherNet/IP

↓

Drive

↓

Motor

This arrangement allows motor control and drive information to become part of the overall automation system.

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26. Maintenance

Maintenance Item	Inspection
Cooling fans	Check operation and unusual noise
Air passages	Check for blockage
Cabinet ventilation	Verify adequate airflow
Power terminals	Inspect condition
Grounding	Check connection integrity
Motor cables	Check insulation and connections
Network cables	Check communication connections
Drive temperature	Check abnormal heating
Fault history	Look for repeated trips
Cabinet cleanliness	Remove excessive dust
Mounting	Check mechanical integrity
Environment	Check temperature and humidity

For a high-power drive, preventive maintenance is especially important.

Repeated faults should be investigated rather than simply reset.

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27. Typical Troubleshooting

Problem	Areas to Check
Motor does not start	Start command, enable, fault status
Overcurrent	Motor load, acceleration, motor data
Overload	Motor current, mechanical load, duty rating
DC bus overvoltage	Deceleration and regeneration
Overtemperature	Fans, airflow, ambient temperature
Communication failure	Network wiring and controller
Incorrect speed	Reference, scaling and configuration
Excessive vibration	Motor and mechanical system
Electrical noise	Grounding, shielding and cable routing
Repeated trips	Mechanical and electrical load conditions

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28. Five Same-Series or Closely Related Models

The following five models are particularly relevant because they belong to the same 400 VAC PowerFlex 755 Frame 8 range.

Model	Voltage	Light Duty	Normal Duty	Heavy Duty	Frame	Relative Position
20G11TC460JN0NNNNN	400 VAC	315 kW / 540 A	250 kW / 460 A	200 kW / 385 A	8	Lower capacity
20G11TC540JN0NNNNN	400 VAC	315 kW / 585 A	315 kW / 540 A	250 kW / 456 A	8	Lower capacity
20G11TC567JN0NNNNN	400 VAC	355 kW / 612 A	315 kW / 567 A	250 kW / 472 A	8	Closest lower-current option
20G11TC750JN0NNNNN	400 VAC	450 kW / 796 A	400 kW / 750 A	315 kW / 585 A	8	Higher capacity
20G11TC770JN0NNNNN	400 VAC	450 kW / 832 A	400 kW / 770 A	355 kW / 642 A	8	Higher capacity

The 400 VAC Frame 8 selection table places these models in the same family, with the 650 A model positioned between the 567 A and 750 A configurations.

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29. Related Model 1 – 20G11TC460JN0NNNNN

The 20G11TC460JN0NNNNN is a lower-current member of the same 400 VAC Frame 8 family.

It is appropriate when the motor’s required current is significantly below 650 A.

Parameter	Specification
Model	20G11TC460JN0NNNNN
Series	PowerFlex 755
Voltage	400 VAC class
Input phase	3 phase
Frame	8
Light-duty current	540 A
Normal-duty current	460 A
Heavy-duty current	385 A
Light-duty power	315 kW
Normal-duty power	250 kW
Heavy-duty power	200 kW
Cooling	Air cooled
Communication	EtherNet/IP
Filtering	Filtered
CM jumper	Installed
Dynamic braking	None
Approx. dimensions	Frame 8 class
Approx. weight	Configuration dependent

This model is a good choice when a 650 A drive would be unnecessarily large.

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30. Related Model 2 – 20G11TC540JN0NNNNN

The 20G11TC540JN0NNNNN provides a lower current rating while remaining in the same Frame 8 family.

Parameter	Specification
Model	20G11TC540JN0NNNNN
Series	PowerFlex 755
Voltage	400 VAC class
Input phase	3 phase
Frame	8
Light-duty current	585 A
Normal-duty current	540 A
Heavy-duty current	456 A
Light-duty power	315 kW
Normal-duty power	315 kW
Heavy-duty power	250 kW
Cooling	Air cooled
Communication	EtherNet/IP
Filtering	Filtered
CM jumper	Installed
Dynamic braking	None
Approx. dimensions	Frame 8 class
Approx. weight	Configuration dependent

This model is useful when the motor current requirement is below the 650 A rating.

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31. Related Model 3 – 20G11TC567JN0NNNNN

The 20G11TC567JN0NNNNN is one of the closest lower-current alternatives.

Parameter	Specification
Model	20G11TC567JN0NNNNN
Series	PowerFlex 755
Voltage	400 VAC class
Input phase	3 phase
Frame	8
Light-duty current	612 A
Normal-duty current	567 A
Heavy-duty current	472 A
Light-duty power	355 kW
Normal-duty power	315 kW
Heavy-duty power	250 kW
Cooling	Air cooled
Communication	EtherNet/IP
Filtering	Filtered
CM jumper	Installed
Dynamic braking	None
Approx. dimensions	Frame 8 class
Approx. weight	Configuration dependent

It is especially relevant when the motor requires less than 650 A but still requires a high-power drive.

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32. Related Model 4 – 20G11TC750JN0NNNNN

The 20G11TC750JN0NNNNN is a higher-current alternative.

Parameter	Specification
Model	20G11TC750JN0NNNNN
Series	PowerFlex 755
Voltage	400 VAC class
Input phase	3 phase
Frame	8
Light-duty current	796 A
Normal-duty current	750 A
Heavy-duty current	585 A
Light-duty power	450 kW
Normal-duty power	400 kW
Heavy-duty power	315 kW
Cooling	Air cooled
Communication	EtherNet/IP
Filtering	Filtered
CM jumper	Installed
Dynamic braking	None
Approx. dimensions	Frame 8 class
Approx. weight	Configuration dependent

This model provides additional current capacity and is suitable when the 650 A configuration is too small.

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33. Related Model 5 – 20G11TC770JN0NNNNN

The 20G11TC770JN0NNNNN is another higher-capacity configuration.

Parameter	Specification
Model	20G11TC770JN0NNNNN
Series	PowerFlex 755
Voltage	400 VAC class
Input phase	3 phase
Frame	8
Light-duty current	832 A
Normal-duty current	770 A
Heavy-duty current	642 A
Light-duty power	450 kW
Normal-duty power	400 kW
Heavy-duty power	355 kW
Cooling	Air cooled
Communication	EtherNet/IP
Filtering	Filtered
CM jumper	Installed
Dynamic braking	None
Approx. dimensions	Frame 8 class
Approx. weight	Configuration dependent

This is a useful option when higher normal-duty or heavy-duty current is required.

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34. Five Same-Brand Popular Models for Broader Selection

The following models are smaller drives from the same brand family and are intended for substantially lower motor power levels.

Model	Series	Voltage Class	Current Class	Approx. Motor Power Class	Typical Application	Frame	Approx. Weight
20G11ND014AA0NNNNN	PowerFlex 755	480 VAC	14 A	10 HP class	Pumps, fans, conveyors	Small frame	Approx. 8–12 kg
20G11ND022AA0NNNNN	PowerFlex 755	480 VAC	22 A	15 HP class	General machinery	Small frame	Approx. 8–12 kg
20G11ND027AA0NNNNN	PowerFlex 755	480 VAC	27 A	20 HP class	Industrial machinery	Small frame	Approx. 12–15 kg
25B-D6P0N104	PowerFlex 525	480 VAC	6 A class	3 HP class	Compact machines	Compact	Approx. 2–3 kg
25B-D011N104	PowerFlex 525	480 VAC	11 A class	5 HP class	Small industrial equipment	Compact	Approx. 3–4 kg

These five models are not direct electrical substitutes for the 650 A drive.

They are included as broader same-brand choices when the motor application is much smaller.

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35. Comparison of the Five Closest 400 VAC Frame 8 Models

Parameter	20G11TC460JN0NNNNN	20G11TC540JN0NNNNN	20G11TC567JN0NNNNN	20G11TC650JN0NNNNN	20G11TC750JN0NNNNN
Voltage	400 V	400 V	400 V	400 V	400 V
Frame	8	8	8	8	8
Light-duty current	540 A	585 A	612 A	750 A	796 A
Normal-duty current	460 A	540 A	567 A	650 A	750 A
Heavy-duty current	385 A	456 A	472 A	540 A	585 A
Light-duty power	315 kW	315 kW	355 kW	400 kW	450 kW
Normal-duty power	250 kW	315 kW	315 kW	355 kW	400 kW
Heavy-duty power	200 kW	250 kW	250 kW	315 kW	315 kW
Cooling	Air	Air	Air	Air	Air
EtherNet/IP	Yes	Yes	Yes	Yes	Yes
CM jumper	Installed	Installed	Installed	Installed	Installed
Dynamic braking	None	None	None	None	None

This table shows that the 20G11TC650JN0NNNNN occupies a middle-to-high position within this particular 400 VAC Frame 8 group.

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36. J Configuration Compared with A Configuration

Parameter	20G11TC650JN0NNNNN	20G11TC650AN0NNNNN
Series	PowerFlex 755	PowerFlex 755
Voltage	400 VAC class	400 VAC class
Input phase	3 phase	3 phase
Frame	8	8
Normal-duty current	650 A	650 A
Normal-duty power	355 kW	355 kW
Light-duty power	400 kW	400 kW
Heavy-duty power	315 kW	315 kW
Cooling	Forced air	Forced air
Filtering	Filtered	Filtered
CM capacitor jumper	Installed	Removed
Dynamic braking	None	None
EtherNet/IP	Yes	Yes
HIM	Blank / No HIM	Blank / No HIM

The primary difference between these two configurations is the common-mode capacitor jumper arrangement.

This is an important detail when specifying a replacement or comparing two catalog numbers.

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37. Advantages of the J Configuration

The J configuration is particularly useful where the specified installation calls for the common-mode capacitor jumper to remain installed.

This can simplify catalog selection when the application is intended to use the preferred filtered/common-mode configuration.

The advantages of the complete configuration include:

• High current capacity
• High motor power capability
• Large overload capability
• Industrial network integration
• Variable-speed motor control
• Air-cooled high-power architecture
• Filtered configuration
• Installed CM capacitor jumper
• Flexible duty selection
• Suitable for large process equipment

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38. Application Selection Guide

Application	Suitability	Main Consideration
Large centrifugal pump	Excellent	Motor current and pump curve
Large centrifugal fan	Excellent	Light-duty rating
Large blower	Excellent	Continuous current
Heavy conveyor	Very suitable	Starting torque
Large mixer	Suitable	Heavy-duty overload
Large roller	Suitable	Inertia and braking
Compressor	Suitable with engineering review	Torque and speed range
Process machine	Suitable	Duty cycle
Cooling system	Excellent	Variable-speed requirements
Water circulation	Excellent	Flow control
Material handling	Suitable	Acceleration and torque

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39. Important Engineering Considerations

Before selecting the 20G11TC650JN0NNNNN for a final installation, several factors should be checked.

Motor Current

The motor’s full-load current must be compatible with the selected drive duty.

Motor Voltage

The motor voltage must be compatible with the drive output.

Load Type

A centrifugal pump has a different load profile from a conveyor or mixer.

Acceleration

High-inertia equipment may require longer acceleration times.

Deceleration

High-inertia equipment can return energy to the DC bus during deceleration.

Braking

This particular configuration does not provide a dynamic braking transistor.

Ambient Temperature

The environmental temperature affects the permissible operating conditions.

Cooling

Adequate airflow is essential.

Installation Space

Frame 8 equipment requires substantial space.

Grounding

The installed common-mode capacitor configuration should be considered together with the electrical system grounding arrangement.

Cable Installation

The high-current motor circuit requires properly selected power conductors and appropriate installation practices.

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40. Physical Installation Summary

Item	Approximate Information
Model	20G11TC650JN0NNNNN
Frame	8
Height	~1900 mm
Width	~850 mm
Depth	~425 mm
Weight	~454 kg
Cooling	Forced air
Construction	Open type
Installation	Industrial enclosure / suitable cabinet
Input	3-phase 400 VAC class
Output	Variable-frequency three-phase AC
Normal-duty current	650 A
Normal-duty power	355 kW

Because this is a large and heavy industrial drive, transportation and installation should be planned in advance.

The approximate 454 kg equipment weight should be taken into account when designing:

• Floor loading
• Mounting
• Lifting
• Transportation
• Cabinet structure
• Maintenance access

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41. Product Selection Summary

The 20G11TC650JN0NNNNN is a high-power variable frequency drive designed for large three-phase AC motors.

Its principal electrical ratings are:

Duty	Current	Power
Light Duty	750 A	400 kW
Normal Duty	650 A	355 kW
Heavy Duty	540 A	315 kW

This places it between the lower-current 567 A configuration and the higher-current 750 A and 770 A configurations within the same 400 VAC Frame 8 family.

For applications around 300–400 kW, the drive provides a substantial amount of current capacity and overload capability.

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42. Final Technical Summary

Category	Specification
Model	20G11TC650JN0NNNNN
Brand	Allen-Bradley
Product family	PowerFlex
Series	PowerFlex 755
Product type	High-power AC variable frequency drive
Input voltage	400 VAC class
Input phase	3 phase
Normal-duty current	650 A
Light-duty current	750 A
Heavy-duty current	540 A
Light-duty power	400 kW
Normal-duty power	355 kW
Heavy-duty power	315 kW
Frame	Frame 8
Cooling	Forced air
Filtering	Filtered
CM capacitor jumper	Installed
Dynamic braking	None
Communication	Embedded EtherNet/IP
HIM	Blank / No HIM
Construction	Open type
Approx. height	1900 mm
Approx. width	850 mm
Approx. depth	425 mm
Approx. weight	454 kg
Main applications	Pumps, fans, conveyors, blowers, mixers, compressors and process machinery

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43. Overall Product Assessment

The 20G11TC650JN0NNNNN is a high-capacity industrial AC drive intended for large motor applications.

Its 650 A normal-duty rating makes it suitable for large industrial motors, while its 750 A light-duty rating provides additional capacity for suitable fan and pump applications.

The 540 A heavy-duty rating allows the drive to be applied to demanding machinery where temporary overload and higher torque requirements need to be considered.

The PowerFlex 755 architecture also gives the drive a strong position in applications where variable-speed control and industrial automation communication are required.

Its embedded EtherNet/IP capability allows the drive to communicate with a controller and exchange operating commands, speed references, status information and diagnostic data.

The J configuration is particularly important because the common-mode capacitor jumper is installed. This differentiates the model from the closely related 20G11TC650AN0NNNNN, which has the jumper removed.

From a mechanical perspective, this is a large Frame 8 drive. A preliminary installation envelope of approximately 1900 × 850 × 425 mm and an equipment weight of approximately 454 kg should be considered during cabinet planning, transportation and installation.

The most closely related models are:

20G11TC460JN0NNNNN – lower capacity.

20G11TC540JN0NNNNN – lower capacity.

20G11TC567JN0NNNNN – closest lower-current alternative.

20G11TC750JN0NNNNN – higher capacity.

20G11TC770JN0NNNNN – higher current and heavy-duty capability.

For a final application, the most important selection factors are the motor nameplate current, motor voltage, duty cycle, starting torque, load inertia, acceleration time, deceleration requirements, braking requirements, ambient temperature, ventilation, grounding arrangement and required communication method.