Allen-Bradley 20BC140A0ANNANC0
Allen-Bradley repareren bij Cirele is:
• Duidelijke tarieven zonder onverwachte kosten
• Betaling pas na geslaagde reparatie
• Proactieve vervanging van tijdgevoelige onderdelen
• Gedetailleerd test- en reparatierapport wordt verstrekt
• 2 jaar garantie op alle reparaties
• Langdurige ondersteuning tot einde levensduur.
The Allen-Bradley 20BC140A0ANNANC0 is a PowerFlex 700S series AC variable frequency drive manufactured by Allen-Bradley, a brand of Rockwell Automation. This unit belongs to the Phase II control architecture of the PowerFlex 700S family, designed for high-performance vector control of AC induction and permanent magnet motors. The 20BC140A0ANNANC0 is rated for 140 amps output current, positioning it in the medium-to-high power range suitable for demanding industrial motor control applications.
The PowerFlex 700S drive features advanced flux vector control with or without encoder feedback, enabling precise speed and torque regulation across a wide dynamic range. It supports multiple communication options through its modular architecture, including compatibility with ControlNet, DeviceNet, EtherNet/IP, and Profibus adapter modules. The drive incorporates a DriveLogix embedded controller option for standalone or coordinated motion control, and includes comprehensive protection features such as overcurrent, overvoltage, undervoltage, overtemperature, and ground fault detection. The hardware is built for 480V AC three-phase input and includes a robust IGBT inverter stage with a switching frequency adjustable to minimize motor heating and audible noise.
The PowerFlex 700S drives are widely deployed in industries such as oil and gas, mining, metals processing, pulp and paper, and material handling, where precise speed and torque control of large motors is critical. They are commonly found on applications including extruders, winders, cranes, conveyors, compressors, and pumps that require dynamic load response and coordinated multi-drive operation. The drive's compatibility with Rockwell Automation's Integrated Architecture and Studio 5000 programming environment makes it well suited for integration into larger automated production systems.
Technical Specifications
| Series/Product Family | PowerFlex 700S |
|---|---|
| Input Voltage | 480V AC, 3-phase |
| Input Frequency | 50/60 Hz |
| Output Current (Continuous) | 140 A |
| Power Rating | 75 kW (100 HP) at 480V |
| Control Type | Sensorless Vector / Closed-Loop Flux Vector |
| Feedback Interface | Incremental Encoder (optional), Resolver (optional) |
| Communication Interface | Modular adapter slot supporting EtherNet/IP, ControlNet, DeviceNet, Profibus DP |
| Operating Temperature | 0 to 50 degrees C (with derating above 40 degrees C) |
| Storage Temperature | -40 to 70 degrees C |
| Relative Humidity | 5 to 95% non-condensing |
| IP/Protection Rating | IP20 (open type enclosure) |
| Mounting | Panel mount / bookcase style |
| Certifications | UL, cUL, CE, C-Tick |
| Safety Features | Overcurrent, Overvoltage, Undervoltage, Overtemperature, Ground Fault, Short Circuit protection |
Common Fault Codes
- Fault Code 2
- Auxiliary input fault. The auxiliary input interlock has opened, indicating an external fault condition has been signaled to the drive.
Check the external device or circuit connected to the auxiliary input terminals. Clear the external fault condition and reset the drive. - 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 three input phases are present and within specification. Check input fuses and connections. - Fault Code 4
- Undervoltage fault. The DC bus voltage has fallen below the undervoltage trip level during operation.
Verify input line voltage is within the rated range. Check for loose input connections or failing input contactors. Inspect input fuses. - Fault Code 5
- Overvoltage fault. The 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 or regenerative unit. Check input line voltage for overvoltage conditions. - Fault Code 7
- Motor overload fault. The drive's electronic overload protection has tripped due to sustained overcurrent, indicating the motor is being driven beyond its thermal capacity.
Check motor load for mechanical binding or excessive load. Verify motor overload parameters are set correctly for the connected motor. Allow motor to cool before restarting. - Fault Code 12
- HW overcurrent fault. The output current has exceeded the hardware overcurrent trip level, indicating a short circuit, ground fault, or severe overload condition.
Check motor and output wiring for short circuits or ground faults. Verify motor insulation resistance. Inspect output power devices. Do not restart until the cause is identified. - Fault Code 25
- Drive overtemperature fault. The heatsink or internal temperature has exceeded the allowable limit, triggering thermal protection.
Check that cooling fans are operational and airflow is unobstructed. Verify ambient temperature is within specification. Clean heatsink fins of dust and debris. Check for adequate enclosure ventilation. - Fault Code 33
- Auto-tune fault. The motor auto-tune procedure failed to complete successfully, indicating incorrect motor nameplate data entry or a wiring issue.
Verify that motor nameplate data entered in the drive parameters is accurate. Check motor wiring connections. Ensure the motor is unloaded during auto-tune and retry the procedure.
Frequently Asked Questions
What is the output current rating of the 20BC140A0ANNANC0?
The 20BC140A0ANNANC0 is rated for 140 amps continuous output current, corresponding to approximately 75 kW (100 HP) at 480V AC three-phase input.
What communication protocols does the PowerFlex 700S 20BC140A0ANNANC0 support?
The PowerFlex 700S uses a modular communication adapter slot that supports EtherNet/IP, ControlNet, DeviceNet, and Profibus DP adapters. The specific protocol depends on which communication adapter module is installed in the drive.
Can the 20BC140A0ANNANC0 operate without an encoder for speed control?
Yes, the PowerFlex 700S supports sensorless vector control mode, which allows operation without an encoder. For applications requiring precise speed regulation or torque control, a closed-loop configuration with an encoder feedback device is recommended.
Is the 20BC140A0ANNANC0 compatible with Rockwell Automation Studio 5000 software?
Yes, the PowerFlex 700S integrates with Rockwell Automation's Studio 5000 Logix Designer environment, allowing configuration, parameter management, and diagnostics through the software when connected via a supported communication network.
What input voltage does the 20BC140A0ANNANC0 require?
This drive is designed for 480V AC three-phase input power at 50 or 60 Hz. Ensure the supply voltage is within the specified tolerance range before connecting the drive.
Troubleshooting
Drive displays an overvoltage fault during deceleration
Monitor the DC bus voltage during deceleration using the drive's diagnostic parameters. If the bus voltage rises above the overvoltage trip threshold, regenerative energy from the load is not being dissipated.
Increase the deceleration time in the drive parameters to reduce the rate of energy return. If faster deceleration is required, install a dynamic braking resistor module or a regenerative braking unit compatible with the PowerFlex 700S.
Drive trips on overtemperature fault shortly after startup
Check the heatsink temperature using the drive's temperature monitoring parameter. Inspect the cooling fans for operation and verify that airflow through the drive is not blocked by dust, debris, or improper enclosure design.
Clean the heatsink and internal airflow paths. Confirm cooling fans are spinning freely and replace any failed fans. Verify ambient temperature is within the 0 to 50 degrees C operating range and that enclosure ventilation is adequate.
Motor runs but speed is unstable or oscillates
Check if the drive is operating in closed-loop vector mode and verify encoder feedback signals are clean and correctly wired. Review the speed regulator gain parameters for excessive proportional or integral gain settings.
Re-run the motor auto-tune procedure to ensure motor model parameters are accurate. Inspect encoder wiring for noise, loose connections, or incorrect shielding. Adjust speed regulator gains to reduce oscillation while maintaining acceptable response.
Drive does not respond to start command
Verify that the drive is not in a faulted state by checking the fault queue on the HIM (Human Interface Module) or via connected software. Check the control source configuration to confirm whether the drive expects a hardwired digital input or a network command.
Clear any active faults and confirm the enable input signal is present at the correct terminal. Verify the control source and reference source parameters are configured to match the intended control method (terminal block, network, or HIM).
Communication adapter module is not recognized or communication is lost
Inspect the communication adapter module seating in the drive's peripheral slot. Check network cabling, termination resistors, and node address settings. Use the network diagnostic tools in Studio 5000 or RSLinx to identify communication errors.
Reseat the communication adapter module firmly in the slot. Verify network cable integrity and correct termination. Confirm the node address or IP address is unique on the network. Update adapter firmware if a version mismatch is detected.
| Condition | Repair, Used, Refurbished, New in box (sealed) |
|---|
Common defects
Common defects on a Allen-Bradley 20BC140A0ANNANC0 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
Related products
-
Lenze Drive ESMD2224TMF
Lenze Drive repair at Cirele is:
• Clear pricing with no surprises
• Payment only after successful repair
• Proactive replacement of time-sensitive components
• Detailed testing and repair report provided
• 2-year warranty on all repairs
• Long-term support until end of life -
Lenze Drive E94AZPS0074N
Lenze Drive repair at Cirele is:
• Clear pricing with no surprises
• Payment only after successful repair
• Proactive replacement of time-sensitive components
• Detailed testing and repair report provided
• 2-year warranty on all repairs
• Long-term support until end of life -
Lenze Drive EPM-T831
Lenze Drive repair at Cirele is:
• Clear pricing with no surprises
• Payment only after successful repair
• Proactive replacement of time-sensitive components
• Detailed testing and repair report provided
• 2-year warranty on all repairs
• Long-term support until end of life