Introduction
The Allen-Bradley 20BP105A0ANNANC1 PowerFlex 700 AC Drive is a Frame 5 industrial variable frequency drive belonging to the PowerFlex 700 20B family. It was designed for applications requiring substantial motor-control capacity together with flexible control and feedback options.
One of the defining characteristics of this model is its 105 A output capability. The drive supports 55 kW normal-duty operation and 45 kW heavy-duty operation, allowing it to control relatively large industrial motors.
The 20BP105A0ANNANC1 is designed around a 540 VDC DC-bus input with precharge. This configuration should not be treated as a conventional direct AC-line-input drive. The DC supply, precharge circuit, disconnect equipment, protective devices, and DC-bus safety procedures must all be considered during system design and maintenance.
The drive uses vector control with 24 V DC I/O. Vector control can provide improved motor torque and speed behavior, particularly where the motor experiences changing loads or where accurate speed regulation is important.
The most significant difference between this model and some closely related PowerFlex 700 configurations is its standard encoder feedback.
The incremental encoder interface supports dual-channel encoder feedback, allowing the drive to monitor motor rotation directly. With properly configured encoder feedback and motor tuning, the drive can achieve substantially better speed regulation than an open-loop configuration. This can be valuable for conveyors, winding equipment, high-inertia machinery, and other applications where motor speed must remain stable despite changes in mechanical load.
The encoder interface is designed for compatible line-driver encoder signals. Encoder wiring should be installed carefully, with appropriate shielding, grounding, cable separation, and signal integrity practices. Incorrect encoder wiring can result in unstable speed feedback, encoder faults, or incorrect motor operation.
The drive also supports programmable acceleration and deceleration. Each acceleration and deceleration time can be configured independently, with a range of 0 to 3600 seconds. This allows commissioning engineers to adjust the drive according to the inertia and mechanical characteristics of the connected load.
For applications that generate substantial regenerative energy during deceleration, it is important to note that this configuration has no internal brake resistor and no brake IGBT. The braking requirements should therefore be analyzed before installation.
The 20BP105A0ANNANC1 also includes an EMC filter with common-mode choke. Although the integrated filtering helps manage electromagnetic interference, proper installation remains essential. Motor cable routing, grounding, cabinet design, cable shielding, and separation of power and control wiring all contribute to overall EMC performance.
The PowerFlex 700 20B family was discontinued by Rockwell Automation on November 30, 2023. This makes the 20BP105A0ANNANC1 particularly relevant to existing installations, maintenance projects, retrofit work, and replacement-part requirements. When replacing an installed PowerFlex 700 drive, engineers should compare the complete catalog number and verify the input voltage, output current, feedback, braking, communication, and filtering configuration.
Technical Specifications
| Specification | Details |
|---|---|
| Brand | Allen-Bradley / Rockwell Automation |
| Product Family | PowerFlex 700 |
| Series | PowerFlex 700 20B |
| Model | 20BP105A0ANNANC1 |
| Product Type | AC Drive / Variable Frequency Drive |
| Lifecycle | Discontinued |
| Discontinued Date | November 30, 2023 |
| Input Voltage | 540 VDC |
| Input Configuration | DC Input with Precharge |
| Input Phases | 3-phase |
| Output Phases | 3-phase |
| Output Current Rating | 105 A |
| Normal-Duty Rating | 55 kW |
| Heavy-Duty Rating | 45 kW |
| Frame Size | Frame 5 |
| Control Method | Vector Control with 24 V DC I/O |
| Motor Control | Sensorless Vector / V/Hz / Vector Control |
| Feedback | Standard Encoder |
| Encoder Type | Incremental, Dual Channel |
| Encoder Supply | 12 VDC, 250 mA |
| Maximum Encoder Input Frequency | 250 kHz |
| Encoder Signal | Quadrature / Pulse, compatible line-driver type |
| HIM | No HIM / Blank Plate |
| Communication Module | None |
| Brake IGBT | None |
| Internal Brake Resistor | None |
| EMC Filter | EMC Filter with Common-Mode Choke |
| Conformal Coating | Yes |
| Enclosure | IP20 / NEMA/UL Type 1 |
| Analog Inputs | 2 |
| Analog Outputs | 2 |
| Digital Inputs | 6 |
| Digital Outputs | 3 |
| Maximum Output Frequency | 420 Hz |
| Carrier Frequency | 2, 4, 8, and 10 kHz |
| Overload Capability | 110% for up to 1 minute; 150% for up to 3 seconds |
| Acceleration Time | 0–3600 s |
| Deceleration Time | 0–3600 s |
| Efficiency | Approximately 97.5% at rated current and nominal voltage |
| Displacement Power Factor | Approximately 0.98 across speed range |
| Short-Circuit Rating | Up to 200,000 A symmetrical, subject to installation conditions |
| Motor Overload Protection | Class 10 motor overload protection in applicable vector configurations |
| Operating Temperature | Typically 0–50°C for applicable Frame 5 configuration |
| Relative Humidity | 5–95%, non-condensing |
| Maximum Altitude Without Derating | 1000 m |
| Degree of Protection | IP20 |
| Dimensions | 689.6 × 308.9 × 275.4 mm |
| Weight | 37.19 kg (81.99 lb) |
Recommended Related Models
- Allen-Bradley 20BP105A0ANNANC0 PowerFlex 700 AC Drive
- Allen-Bradley 20BP105A0AYNANC0 PowerFlex 700 AC Drive
- Allen-Bradley 20BP105A3ANNACC1 PowerFlex 700 AC Drive
- Allen-Bradley 20BP125A0AYNANC0 PowerFlex 700 AC Drive
- Allen-Bradley 20BP140A0ANNANC0 PowerFlex 700 AC Drive
- Allen-Bradley 20BP170A0ANNANC0 PowerFlex 700 AC Drive
- Allen-Bradley 20BH105A0ANNANC0 PowerFlex 700 AC Drive
When selecting a replacement or alternative, the encoder requirement should be checked carefully. The 20BP105A0ANNANC1 includes standard encoder feedback, while the closely related 20BP105A0ANNANC0 does not. The input voltage, current rating, braking configuration, communication options, and enclosure should also be matched.
Popular Related Models
Allen-Bradley 20BP105A0ANNANC0
A closely related 105 A, 540 VDC PowerFlex 700 configuration without the standard encoder feedback option. It is useful when encoder feedback is not required.
Allen-Bradley 20BP105A0AYNANC0
Another 105 A PowerFlex 700 20B configuration for comparison when evaluating catalog-code and system configuration requirements.
Allen-Bradley 20BP125A0AYNANC0
A higher-current PowerFlex 700 DC-input configuration for applications requiring additional output capacity.
Allen-Bradley 20BP140A0ANNANC0
A 140 A-class PowerFlex 700 configuration suitable for applications requiring a higher current rating.
Allen-Bradley 20BP170A0ANNANC0
A higher-capacity PowerFlex 700 configuration for larger industrial motor applications.
Allen-Bradley 20BH105A0ANNANC0
A related 105 A PowerFlex 700 configuration that can be considered when comparing different 20B input configurations.
Allen-Bradley 20BP105A0ANNANC1
The exact model covered on this page: 105 A, 540 VDC precharge, 55 kW normal duty, 45 kW heavy duty, Frame 5, vector control with 24 V I/O, standard incremental encoder feedback, EMC filter with common-mode choke, no HIM, no communication module, no brake IGBT, and no internal brake resistor.
