Allen Bradley 20P41AD167RA0NNN PowerFlex DC Driver
Allen Bradley 20P41AD167RA0NNN PowerFlex DC Driver
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Brand:Allen Bradley PLC Item No.:20P41AD167RA0NNN Product Origin:USA Product Dimensions:311 x 388 x 350 mm Product Weight:25.5 kg Payment:T/T, Western Union, Credit Card Goods_stock:15 Shipping Port:Xiamen, China Lead Time:1-3 Days Condition:Brand New And Original Warranty:1 Year Certificate:COO
The Allen-Bradley 20P41AD167RA0NNN PowerFlex DC Drive is a high-capacity industrial drive intended for DC motor applications requiring 167 A output capability and four-quadrant regenerative control. Its 480 VAC three-phase input and 100 HP normal-duty rating place it in the higher-power range of the PowerFlex DC platform.
This configuration is particularly useful when a production machine requires more than basic variable-speed operation. In dynamic applications, the motor may repeatedly transition between accelerating, running, decelerating, reversing, and regenerative states. Four-quadrant control allows the drive to manage these conditions with coordinated torque control.
Winding and unwinding equipment is a good example. During one operating condition, the motor may drive the material, while during another, the material itself can drive the motor. A regenerative DC drive is well suited to handling these changes without requiring the machine to rely exclusively on conventional mechanical braking.
The same principle applies to hoists and other lifting equipment. When a load is lowered, gravitational energy can cause the motor to operate regeneratively. Proper drive selection and system engineering are therefore critical to maintaining stable and controlled operation.
The regulated field supply is another important feature of the PowerFlex DC architecture. DC motor speed and torque characteristics depend on the relationship between armature current and field excitation, so accurate field control is essential for demanding applications.
The 20P41AD167RA0NNN is also a practical choice for modernization and maintenance projects involving existing PowerFlex DC equipment. When the motor, mechanical system, and surrounding control architecture remain serviceable, replacing a failed drive with a correctly matched unit can often be more efficient than redesigning the entire machine.
The drive uses an IP20/NEMA/UL Type Open enclosure and should be installed inside an appropriate protected control environment. Cabinet ventilation, grounding, power protection, motor connections, and environmental conditions should all be considered during installation.
For replacement applications, catalog-number accuracy is essential. Similar PowerFlex DC models can have different current ratings, field configurations, regenerative characteristics, and control options. Selecting the correct 20P41AD167RA0NNN configuration helps reduce compatibility problems during commissioning.
Technical Specifications
Parameter
Specification
Manufacturer
Allen-Bradley
Product Family
PowerFlex DC
Model
20P41AD167RA0NNN
Product Type
Regenerative DC Drive
Input Voltage
480 VAC
Input Phase
3 Phase
Input Configuration
6 Pulse
Output Current
167 A
Normal-Duty Rating
100 HP
Normal-Duty Power
Approximately 75 kW
Operating Mode
Four-Quadrant Regenerative
Field Supply
Regulated
Frame Size
Frame B
Enclosure
IP20 / NEMA/UL Type Open
Conformal Coating
Yes
HIM Configuration
No HIM / Blank Plate
Communication Module
None
Dimensions
311 × 388 × 350 mm
Weight
25.50 kg (56.22 lb)
Recommended Related Models
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20P41AD167RA0NNN
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100 HP
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These models provide useful alternatives when the application requires a different DC motor current or power rating within the PowerFlex DC regenerative platform. The drive should always be selected according to actual motor current, duty cycle, field requirements, and load characteristics.
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The Allen-Bradley 20P41AD167RA0NNN PowerFlex DC Drive is a powerful solution for established industrial DC motor systems requiring 167 A output capacity, 100 HP normal-duty operation, and four-quadrant regenerative control. Its high-current capability and established PowerFlex architecture make it well suited to demanding production equipment, system refurbishment, and replacement projects where reliable DC motor control remains essential.
Applications
The Allen-Bradley 20P41AD167RA0NNN PowerFlex DC Drive is designed for high-current industrial DC motor applications where precise speed control, controlled torque, and regenerative operation are essential. With a 480 VAC three-phase input and a 167 A output rating, this PowerFlex DC configuration is suited to demanding 100 HP normal-duty motor applications.
This drive is particularly appropriate for heavy-duty production equipment such as rolling machinery, conveyors, winding and unwinding systems, hoists, material-handling equipment, printing machinery, processing lines, and other applications where the motor must frequently accelerate, decelerate, or change direction.
Four-quadrant regenerative operation is a major advantage in dynamic applications. When a motor is driven by the load during deceleration or lowering, energy can be returned through the regenerative power section. This makes the drive especially useful where braking cycles are frequent and controlled energy recovery is part of normal machine operation.
The 20P41AD167RA0NNN can also serve as a practical replacement for existing PowerFlex DC installations. Many industrial machines continue to rely on DC motors because of their mechanical design and established process characteristics. Maintaining the same drive platform can help reduce modifications to existing control cabinets, motor wiring, and machine-control logic.
Its higher 167 A current capacity gives the drive additional capability for larger DC motors and demanding load profiles. However, the actual motor armature current, field requirements, overload conditions, feedback arrangement, and duty cycle should be evaluated before installation.
For industrial maintenance teams, this model is especially valuable when an existing PowerFlex DC drive needs replacement without unnecessarily changing the surrounding automation architecture.
Advantages
High-current 167 A output
The 20P41AD167RA0NNN is designed for applications requiring substantially higher DC output current. Its 167 A rating supports 100 HP normal-duty applications and provides the capacity needed by larger industrial DC motors.
Four-quadrant regenerative operation
The regenerative architecture allows controlled operation in all four quadrants. Forward and reverse motoring can be combined with forward and reverse regeneration, making the drive suitable for machines with frequent braking or reversing requirements.
480 VAC three-phase input
The drive is configured for a 480 VAC three-phase industrial supply, making it suitable for common high-voltage motor-control systems used in industrial facilities.
Regulated field control
A regulated field supply allows the drive to provide controlled excitation for compatible DC motors. Stable field operation is important when accurate speed regulation and predictable motor performance are required.
Six-pulse power configuration
The six-pulse input arrangement provides a conventional industrial DC conversion architecture that can be incorporated into established DC motor-control systems.
Conformal-coated electronics
Conformal coating provides additional protection to electronic assemblies against certain environmental stresses. This is useful for properly engineered industrial installations where humidity or airborne contaminants may be a concern.
Designed for dynamic loads
The combination of high output current and regenerative control makes this model a strong fit for equipment with significant inertia, frequent speed changes, or repeated braking cycles.
Suitable for legacy PowerFlex systems
Facilities already using PowerFlex DC equipment can benefit from maintaining the same drive family. This can make replacement work more straightforward for technicians who are familiar with the platform and its commissioning procedures.
Industrial maintenance value
For production equipment where unexpected drive failure can result in substantial downtime, keeping an accurately matched spare can improve maintenance response and shorten the time required to restore operation.
Technical FAQs
1. What is the output current rating of the 20P41AD167RA0NNN?
The drive has a 167 A output rating and is intended for 100 HP normal-duty applications. The motor's actual rated armature current should be compared with the drive rating before installation.
2. What input power supply is required?
This configuration is designed for a 480 VAC three-phase input with a six-pulse power configuration. The incoming supply should be verified before connecting the drive.
3. Is the 20P41AD167RA0NNN a regenerative DC drive?
Yes. It is configured for regenerative operation and supports four-quadrant control. This allows the drive to manage both motoring and regenerative conditions in forward and reverse directions.
4. Why is regenerative operation important for industrial machinery?
Regenerative operation is useful when the motor is frequently decelerating, reversing, or being driven by the load. Instead of treating regenerated energy solely as a braking problem, the drive's regenerative architecture is designed to manage this energy as part of normal operation.
5. What type of applications benefit most from four-quadrant control?
Hoists, winders, unwinders, rolling machinery, conveyors, elevators, and other equipment with frequent acceleration, deceleration, or reversing cycles can benefit significantly from four-quadrant DC motor control.
6. Does this model provide field excitation for a DC motor?
Yes. The configuration includes a regulated field supply. The DC motor's field voltage and current requirements must be checked carefully to ensure proper compatibility.
7. Can this drive be controlled by a PLC?
Yes. The PowerFlex DC platform can be integrated into PLC-based control systems through suitable control I/O and communication or interface hardware. The actual control arrangement depends on the machine's existing architecture.
8. What should be checked when replacing a 100 HP DC drive?
The complete drive catalog number should be verified together with input voltage, output current, motor armature rating, field supply, regenerative configuration, feedback, control I/O, communication options, enclosure, and environmental requirements.
9. What could cause poor speed regulation after replacing the drive?
Incorrect motor data, improperly configured feedback, unsuitable speed-loop tuning, unstable field excitation, incorrect current limits, or inappropriate control parameters can all affect speed regulation. Commissioning should begin by verifying the motor and feedback configuration.
10. How can regenerative faults be investigated?
Check the motor and load profile, deceleration settings, regenerative operating conditions, line connections, feedback signals, and drive parameters. If the machine generates substantial energy during braking, the regenerative section and associated power-system conditions should also be examined.
