Allen Bradley 20BC260A3ANNADC0 PowerFlex 700 AC Drive
Allen Bradley 20BC260A3ANNADC0 PowerFlex 700 AC Drive
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Brand:Allen Bradley PLC Item No.:20BC260A3ANNADC0 Product Origin:USA Product Dimensions:976.3 x 403.9 x 275.5 mm Product Weight:71.44 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 20BC260A3ANNADC0 is a PowerFlex 700 AC Drive from the PowerFlex 700 20B family. It is a high-power, three-phase variable frequency drive designed for industrial applications requiring controlled acceleration, deceleration, speed regulation, and motor torque management.
This model has a nominal 400 V AC supply and a continuous output rating of 260 A. At its normal-duty rating, it is specified for 132 kW, while its heavy-duty rating is 110 kW. This makes it suitable for large motor-driven equipment in manufacturing plants, process industries, material handling, and other demanding automation environments.
The configuration is particularly identifiable by its DeviceNet communication capability, vector control with 24 V DC I/O, EMC filter with common-mode choke, no feedback option, and absence of an internal brake IGBT or brake resistor. These configuration details are important when replacing an existing PowerFlex 700 because two drives with similar current ratings may have substantially different communication, control, feedback, and braking options.
For maintenance and replacement work, the complete catalog number should therefore be matched rather than selecting a drive only by its 260 A current rating.
The PowerFlex 700 platform also provides programmable acceleration and deceleration times, configurable current limiting, several stop modes, motor overload protection, DC-bus monitoring, and fault detection functions. Its vector-control architecture allows engineers to achieve improved speed regulation compared with conventional open-loop V/Hz control in appropriate applications.
The 20BC260A3ANNADC0 is an IP20/NEMA/UL Type 1 drive, so installation inside an appropriate industrial electrical enclosure is normally required when the surrounding environment demands greater protection. Ventilation and heat dissipation are especially important for high-power Frame 6 installations because drive losses generate significant heat inside the enclosure.
Rockwell Automation has discontinued the PowerFlex 700 20B product family, with June 1, 2023 listed as the discontinuation date for this model. Therefore, the 20BC260A3ANNADC0 is primarily encountered today in existing installations, maintenance programs, equipment refurbishment, and replacement markets. When purchasing or replacing an existing unit, technicians should verify the complete catalog number, firmware requirements, communication configuration, and motor-control requirements before installation.
Technical Specifications
Parameter
Specification
Brand
Allen Bradley
Product Family
PowerFlex 700
Drive Series
20B
Model
20BC260A3ANNADC0
Product Type
AC Drive / Variable Frequency Drive
Input Voltage
400 V AC
Input Voltage Range
380–480 V class
Input Phase
3-phase
Input Frequency
50 Hz nominal
Input Current
255 A @ 400 V AC
Output Current
260 A continuous
Normal-Duty Power
132 kW
Heavy-Duty Power
110 kW
Heavy-Duty Current, 1 min
308 A
Heavy-Duty Current, 3 sec
410 A
Nominal Motor Voltage
400 V
Output Phase
3-phase
Maximum Output Frequency
420 Hz
Control Method
Sine-coded PWM
Control Option
Vector control with 24 V DC I/O
Motor Control
Sensorless Vector / V/Hz / Vector Control
Feedback
No feedback
Internal Communication
DeviceNet
Analog Inputs
2
Analog Outputs
2
Digital Inputs
6
Digital Outputs
3
Brake IGBT
Without brake IGBT
Internal Brake Resistor
No
EMC Filtering
EMC filter with common-mode choke
Carrier Frequency
2, 4, 8, and 10 kHz
Efficiency
Approx. 97.5%
Enclosure
IP20 / NEMA / UL Type 1
Maximum Altitude Without Derating
1000 m / 3300 ft
Relative Humidity
5–95%, noncondensing
Ambient Operating Temperature
0–50 °C, typical Frame 6 range
Storage Temperature
-40 °C
Approx. Dimensions
976.3 × 403.9 × 275.5 mm
Weight
71.44 kg / 157.50 lb
Lifecycle
Discontinued
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Applications
The Allen Bradley 20BC260A3ANNADC0 PowerFlex 700 AC Drive is a high-capacity variable frequency drive designed for industrial motor control applications requiring substantial continuous current and reliable speed and torque regulation. It is rated for 260 A continuous output at 400 V and provides 132 kW normal-duty and 110 kW heavy-duty ratings.
Typical applications include:
Large industrial conveyor systems
Pumps and water-treatment equipment
Fans and ventilation systems
Compressors
Material-handling machinery
Extrusion and process equipment
Industrial mixers and agitators
Machine tools and production machinery
Paper, printing, and converting equipment
Metals and heavy industrial machinery
General-purpose process motor control
The drive uses vector control with 24 V DC I/O and supports sensorless vector control, V/Hz control, and vector control configurations. This makes it suitable for applications where stable motor speed and improved torque control are required without necessarily installing motor feedback.
The 20BC260A3ANNADC0 also incorporates a DeviceNet communication module, making it suitable for integration into automation systems where drive commands, operating status, speed references, fault information, and diagnostic data need to be exchanged with a control network.
Advantages
High-current motor control
The 20BC260A3ANNADC0 provides a continuous output current rating of 260 A. Its normal-duty rating is 132 kW, while the heavy-duty rating is 110 kW, making it appropriate for relatively large industrial motors.
Vector control capability
The drive uses vector control with 24 V DC I/O. Sensorless vector control can provide substantially better speed regulation and torque response than basic V/Hz operation in applications where dynamic motor performance matters.
DeviceNet communication
An internal DeviceNet communication module is included in this specific configuration. This allows the drive to exchange control and diagnostic information with a DeviceNet-based industrial automation network.
Built-in EMC filtering
The drive includes an EMC filter with a common-mode choke. This helps reduce conducted electromagnetic interference and can simplify EMC considerations when the drive is installed according to the applicable wiring and grounding requirements.
Flexible motor control
The PowerFlex 700 supports sensorless vector control, standard V/Hz control with customization capability, and vector control. Engineers can therefore select a control strategy according to the motor and application requirements.
High overload capability
The drive supports up to 110% overload for one minute and 150% overload for three seconds under the specified heavy-duty conditions. This is useful for applications involving temporary increases in mechanical load.
Multiple stopping modes
Available programmable stopping methods include coast, DC braking, fast braking, RA-to-hold, and S-curve-related functions. The appropriate stopping method can be selected according to the machine's mechanical characteristics.
Industrial protection and monitoring
The drive provides functions such as phase-to-phase output short-circuit detection, phase-to-ground fault detection, heat-sink temperature monitoring, motor overload protection, and DC-bus voltage monitoring.
High efficiency
The published efficiency is approximately 97.5% at rated current and nominal line voltage, helping reduce electrical losses during normal operation.
Technical FAQs
1. What is the rated output current of the Allen Bradley 20BC260A3ANNADC0?
The continuous output current rating is 260 A at 400 V AC, three-phase. The drive is rated at 132 kW for normal duty and 110 kW for heavy duty.
2. What input voltage does the 20BC260A3ANNADC0 require?
The nominal input is 400 V AC, three-phase, 50 Hz, with a drive rating covering the 380–480 V range. The specified operating range is approximately 342–528 V.
3. Does the 20BC260A3ANNADC0 support vector control?
Yes. This configuration uses vector control with 24 V DC I/O. Sensorless vector control and V/Hz control are also supported by the PowerFlex 700 platform.
4. Does this model have an internal communication module?
Yes. The 20BC260A3ANNADC0 is equipped with an internal DeviceNet communication module. DeviceNet can be used for control and monitoring when connected to a compatible industrial network.
5. Does the drive include a braking resistor or brake IGBT?
No. This specific catalog configuration does not include a brake IGBT and does not have an internal brake resistor. If regenerative braking is required, the braking arrangement must be engineered separately for the application.
6. Can the drive operate without an encoder?
Yes. The catalog configuration specifies no feedback option. The PowerFlex 700 can operate in sensorless vector or V/Hz modes without an encoder, although an appropriate feedback solution may be required for applications demanding closed-loop speed or position performance.
7. What overload capability is available?
The published specification provides 110% overload capability for up to one minute and 150% overload capability for up to three seconds under the specified conditions. Actual application sizing should consider the motor duty cycle and load profile.
8. What should be checked if the drive repeatedly trips on overcurrent?
First check motor and load conditions, acceleration time, mechanical binding, motor cable insulation, motor current, and motor nameplate parameters. Excessively short acceleration or deceleration times can produce high current demand. In sensorless vector operation, correct motor data and completion of the required tuning procedure are also important.
9. What is the maximum output frequency?
The specified maximum output frequency for this configuration is 420 Hz. The practical operating frequency should be determined from the motor's mechanical limits, insulation system, cooling characteristics, and application requirements rather than simply using the maximum available setting.
10. What environmental conditions should be considered during installation?
The drive is specified for IP20/NEMA/UL Type 1 protection. The typical ambient operating range for frames 5–6 is 0–50 °C, with 5–95% relative humidity, noncondensing. Above the applicable altitude limit or in environments with conductive or corrosive contamination, additional derating or enclosure protection may be necessary.
