Allen-Bradley 20BD011A0AYNANC0

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SKU: 20BD011A0AYNANC0 Category: Drive Brand: Allen-Bradley

The Allen-Bradley 20BD011A0AYNANC0 is a PowerFlex 700 series AC variable frequency drive manufactured by Allen-Bradley, a brand of Rockwell Automation. This unit belongs to the PowerFlex 700 standard control drive family, designed to provide precise speed and torque control for three-phase AC induction motors. The SKU 20BD011A0AYNANC0 decodes to a 480V AC input, 11A output current rating, corresponding to approximately 7.5 HP (5.5 kW) at 480V, in a standard chassis configuration.

The PowerFlex 700 drive features a modular architecture supporting a range of optional communication adapter cards including DeviceNet, EtherNet/IP, ControlNet, Profibus DP, and Modbus RTU, enabling seamless integration into diverse industrial control networks. It incorporates a standard control board with analog and digital I/O, supporting both volts-per-hertz (V/Hz) and sensorless vector control modes, with an optional encoder feedback module available for closed-loop vector control. The drive includes built-in EMC filtering options, dynamic braking transistor circuitry, and comprehensive protection features such as overcurrent, overvoltage, undervoltage, overtemperature, and ground fault detection. The human interface module (HIM) provides local parameter programming and diagnostics, and drive parameters can be stored and transferred using the integral non-volatile memory.

The PowerFlex 700 is widely deployed in manufacturing, material handling, water and wastewater treatment, HVAC, and process industries. It is commonly used to control pumps, fans, compressors, conveyors, mixers, and extruders where variable speed operation improves process efficiency and reduces energy consumption. Its compatibility with Rockwell Automation control architectures, including ControlLogix and CompactLogix PLCs, makes it a standard choice for integrated machine and plant automation systems.

Technical Specifications

Series / Product Family	PowerFlex 700
Input Voltage	480V AC, 3-phase
Input Voltage Range	342 – 528V AC
Input Frequency	47 – 63 Hz
Output Current (Continuous)	11 A
Power Rating	5.5 kW (7.5 HP)
Output Frequency Range	0 – 400 Hz
Control Type	V/Hz and Sensorless Vector Control
Communication Interface	Optional adapter: DeviceNet, EtherNet/IP, ControlNet, Profibus DP, Modbus RTU
Feedback Interface	Optional encoder feedback module (incremental encoder)
Digital Inputs	6 programmable digital inputs
Analog Inputs	2 analog inputs (0-10V / 4-20mA)
Operating Temperature	0 – 50 degrees C (with derating above 40 degrees C)
Storage Temperature	-40 – 70 degrees C
Relative Humidity	5 – 95% non-condensing
IP / Protection Rating	IP20 (open chassis)
Certifications	UL, cUL, CE, C-Tick
Mounting	Panel / chassis mount

Common Fault Codes

Fault Code 2: Auxiliary Input fault. A digital input configured as an auxiliary input has opened, indicating an external fault condition.
Check the external device or circuit connected to the auxiliary input. Verify wiring integrity and confirm the external device is operating correctly before clearing the fault.
Fault Code 3: Power Loss fault. DC bus voltage dropped below the minimum threshold, indicating an input power interruption or severe voltage sag.
Check incoming AC supply voltage for sags or interruptions. Verify all input fuses and contactors. Inspect input wiring connections for looseness or damage.
Fault Code 4: Undervoltage fault. DC bus voltage has fallen below the undervoltage trip level during operation.
Measure incoming line voltage and verify it is within the specified range (342-528V AC). Check for loose input connections, blown fuses, or supply issues.
Fault Code 5: Overvoltage fault. DC bus voltage has exceeded the overvoltage trip threshold, typically caused by regenerative energy from a decelerating load.
Increase deceleration time to reduce regenerative energy. Consider adding a dynamic braking resistor if the load is highly inertial. Verify incoming line voltage is not elevated.
Fault Code 7: Motor Overload fault. The drive's electronic overload protection has tripped due to sustained overcurrent to the motor.
Check motor load for mechanical overload or jamming. Verify motor overload parameters (FLA setting) are correctly programmed. Allow the motor to cool before restarting.
Fault Code 12: HW Overcurrent fault. Output current has exceeded the hardware overcurrent trip level, indicating a severe overcurrent condition.
Check for a short circuit in the motor cable or motor windings. Verify motor insulation resistance. Inspect output wiring for damage. Check for a seized or jammed mechanical load.
Fault Code 25: Drive Overtemperature fault. The drive heatsink temperature has exceeded the maximum allowable limit.
Check that ambient temperature is within specification. Verify cooling fans are operating and airflow is unobstructed. Clean heatsink fins of dust and debris. Check for adequate ventilation in the enclosure.
Fault Code 33: Auto Restart Tries fault. The drive has exceeded the configured number of automatic restart attempts without successfully running.
Identify and resolve the underlying fault that is causing repeated trips before re-enabling auto restart. Review fault queue history to determine the root cause fault code.

Frequently Asked Questions

What is the output current and horsepower rating of the 20BD011A0AYNANC0?

The 20BD011A0AYNANC0 is rated for 11A continuous output current at 480V AC, corresponding to a 5.5 kW (7.5 HP) motor rating under normal duty conditions.

What communication protocols does the PowerFlex 700 20BD011A0AYNANC0 support?

The drive supports optional communication adapter modules that enable DeviceNet, EtherNet/IP, ControlNet, Profibus DP, and Modbus RTU connectivity. The specific adapter must be ordered and installed separately; the base unit does not include a communication card.

Can the 20BD011A0AYNANC0 be used with closed-loop encoder feedback?

Yes, the PowerFlex 700 supports an optional encoder feedback module that enables closed-loop vector control for improved speed regulation and torque performance. The encoder module must be installed in the designated option slot on the drive.

What control modes are available on the PowerFlex 700?

The PowerFlex 700 supports Volts-per-Hertz (V/Hz) control and Sensorless Vector Control (SVC) as standard. Closed-loop vector control is available with the optional encoder feedback module installed.

Is the 20BD011A0AYNANC0 compatible with Rockwell Automation PLC platforms?

Yes, the PowerFlex 700 integrates directly with Rockwell Automation ControlLogix, CompactLogix, and other Allen-Bradley PLC platforms via optional communication adapters such as EtherNet/IP or DeviceNet, supporting full parameter access and drive control through Studio 5000 or RSLogix 5000.

Troubleshooting

Drive displays Fault Code 5 (Overvoltage) repeatedly during deceleration

Measure DC bus voltage during deceleration using the drive's diagnostic parameters. Confirm whether the fault occurs consistently at the same point in the deceleration ramp, indicating regenerative energy buildup.

Increase the deceleration time in the drive parameters to reduce the rate of energy regeneration. If the load inertia is high and a longer decel time is not acceptable, install an appropriately sized dynamic braking resistor on the drive's braking transistor terminals.

Drive powers up but motor does not rotate when a run command is issued

Verify the run command source parameter matches the actual command source (terminal block, HIM, or network). Check digital input wiring and confirm the enable input is active. Review the drive status word and check for any active faults or inhibits in the fault queue.

Correct the command source parameter if misconfigured. Verify all control wiring connections at the terminal block. Clear any latched faults and confirm no inhibit conditions are active before issuing a run command.

Drive trips on Fault Code 7 (Motor Overload) under normal load conditions

Check the motor nameplate full load amperage (FLA) and compare it to the motor overload FLA parameter programmed in the drive. Measure actual output current during operation and compare to the motor nameplate rating.

Reprogram the motor overload FLA parameter to match the motor nameplate value. If actual current is genuinely elevated, inspect the mechanical load for increased friction, binding, or overloading and address the mechanical cause.

Drive heatsink overtemperature fault (Fault Code 25) occurring in normal ambient conditions

Inspect the drive's internal and external cooling fans for operation. Check heatsink fins for dust accumulation. Measure ambient temperature inside the enclosure and verify it does not exceed 40 degrees C without derating.

Clean heatsink fins with compressed air. Replace cooling fans if they are not spinning or are running slowly. Improve enclosure ventilation or add forced air cooling if ambient temperature is elevated. Verify the drive is not undersized for the load, which would cause sustained high output current.

Communication adapter is not recognized or communication faults occur intermittently

Verify the communication adapter is fully seated in the option slot and that the drive has been power-cycled after installation. Check network wiring for correct termination, shielding, and node addressing. Review the adapter status LEDs for fault indications.

Reseat the communication adapter module firmly in the option slot and cycle drive power. Verify network cable termination resistors are correctly installed at network endpoints. Confirm the node address and baud rate settings match the network configuration. Replace the adapter module if hardware failure is suspected.

Condition	Repair, Used, Refurbished, New in box (sealed)

Common defects

Common defects on a Allen-Bradley 20BD011A0AYNANC0 are:

Power Supply Related Issues

No power / drive not turning on
Blown fuses
Defective rectifier bridge
Damaged DC bus capacitors
IGBT / MOSFET module failure
Overvoltage / undervoltage errors

Control & Electronics Failures

Faulty control board or PCB damage
Firmware or memory corruption
Fieldbus communication errors (Profibus, Modbus, EtherCAT, CANopen)
Input / output circuit damage
Gate driver module failure

Motor Control Problems

Motor not starting or no output
Unstable speed control
No torque output
Trip during acceleration or deceleration
Encoder feedback errors

Thermal & Cooling Defects

Overheating due to failed cooling fans
Defective temperature sensors
Poor heatsink performance

Mechanical & Environmental Damage

Burnt or loose connectors
PCB track damage
Corrosion or moisture ingress
Oil, dust or contamination damage
Cracked solder joints

Error Codes & Drive Trips

Overcurrent faults (OC)
Ground fault / earth leakage error
Short-circuit fault
Motor or drive overload
Overvoltage or undervoltage error
Undervoltage trip when starting or stopping
Phase loss / imbalance
Synchronization issues with multiple drives

Other

Display defect
Control keys or keypad not working
Parameters no longer readable or lost
Brake resistor problems (brake chopper defect)
Internal relays/contactors defective
EMI/RFI interference due to defective filters