Allen-Bradley 20F1AGC367JN0NNNNN
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The Allen-Bradley 20F1AGC367JN0NNNNN 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 closed-loop vector and volts-per-hertz motor control applications. The SKU 20F1AGC367JN0NNNNN encodes specific configuration details including voltage class, amperage rating, enclosure type, and option selections as defined by the Allen-Bradley catalog numbering system.
The PowerFlex 700S drive features a robust DSP-based control platform supporting both open-loop and closed-loop vector control modes, including flux vector control for demanding dynamic performance requirements. It supports multiple communication options including DeviceNet, ControlNet, EtherNet/IP, and Profibus DP through interchangeable communication adapter modules. The drive incorporates advanced safety functionality compatible with Safe Torque Off (STO) to meet SIL 2 and PLd safety ratings, and includes comprehensive onboard diagnostics with non-volatile fault logging. The hardware is built for industrial environments with conformal coating options and a wide operating temperature range.
The PowerFlex 700S is widely deployed in industries such as oil and gas, mining, metals processing, pulp and paper, and material handling, where precise speed and torque regulation are critical. It is commonly used on applications including extruders, winders, cranes, hoists, compressors, and large pump and fan systems requiring dynamic load response. The drive's scalable power range and flexible control architecture make it suitable for both standalone machine-level installations and integrated drive systems within larger Rockwell Automation control architectures.
Technical Specifications
| Series / Product Family | PowerFlex 700S |
|---|---|
| Input Voltage | 600 V AC (3-phase) |
| Output Current (Continuous) | 367 A |
| Power Rating | Approximately 250 kW / 350 HP at 600 V |
| Control Type | Closed-loop flux vector, open-loop V/Hz, sensorless vector |
| Feedback Interface | Incremental encoder, resolver, and absolute encoder via feedback option card |
| Communication Interface | DeviceNet, ControlNet, EtherNet/IP, Profibus DP (via adapter module) |
| Safety Features | Safe Torque Off (STO), SIL 2 / PLd compliant |
| Enclosure / Protection Rating | IP00 / Open type (chassis) |
| Operating Temperature | 0 to 50 degrees C |
| Storage Temperature | -40 to 70 degrees C |
| Relative Humidity | 5 to 95% non-condensing |
| Mounting | Panel / cabinet mount (chassis) |
| Certifications | UL, cUL, CE, RCM |
| Control Architecture | Phase II DSP-based control |
| Braking | Dynamic braking transistor built-in (external resistor required) |
Common Fault Codes
- Fault Code 2
- Auxiliary Input fault. The auxiliary input interlock has opened, indicating an external fault condition has been triggered.
Check the wiring and status of the external device connected to the auxiliary input terminals. Clear the external fault condition and reset the drive. - Fault Code 12
- HW OverCurrent fault. The drive output current has exceeded the hardware overcurrent trip threshold.
Check for a short circuit or ground fault on the motor cables or motor windings. Verify motor load conditions and acceleration ramp settings. Inspect output wiring and motor insulation. - Fault Code 13
- Ground Fault. Excessive current is flowing to ground, indicating a ground fault in the output wiring or motor.
Disconnect the motor and test insulation resistance of motor cables and motor windings. Repair or replace damaged cables or motor as required. - Fault Code 25
- Decel Inhibit fault. The drive is unable to decelerate within the programmed deceleration time due to excessive bus voltage.
Increase the deceleration time parameter, enable the bus voltage regulation feature, or add a dynamic braking resistor to absorb regenerative energy. - Fault Code 33
- Auto Restart Tries fault. The drive has exceeded the maximum number of automatic restart attempts without successfully running.
Identify and resolve the underlying fault that is causing repeated trips. Check motor, load, and wiring conditions before re-enabling auto restart. - Fault Code 63
- SW OverCurrent fault. The output current has exceeded the software-defined overcurrent threshold.
Check for mechanical overload on the driven equipment. Verify current limit parameter settings and motor nameplate data entered in the drive configuration. - Fault Code 70
- Power Unit fault. An internal power structure fault has been detected, which may indicate a failed power component within the drive.
Cycle power to the drive. If the fault persists, inspect the power module for damage. The drive may require component-level repair or power module replacement. - Fault Code 81
- Comm Loss fault. Communication between the drive and the installed communication adapter module has been lost.
Check the seating and condition of the communication adapter module. Verify network cabling and controller configuration. Re-seat the adapter and restore network connectivity.
Frequently Asked Questions
What is the output current rating of the 20F1AGC367JN0NNNNN?
The catalog number encodes a continuous output current rating of 367 A at 600 V AC, corresponding to approximately 250 kW or 350 HP for a standard duty application.
What communication protocols does the PowerFlex 700S support?
The PowerFlex 700S supports multiple industrial protocols including EtherNet/IP, ControlNet, DeviceNet, and Profibus DP. Protocol support is determined by the communication adapter module installed in the drive.
Does this drive support Safe Torque Off (STO) safety functionality?
Yes, the PowerFlex 700S Phase II supports Safe Torque Off (STO) as an integrated safety function, meeting SIL 2 and PLd requirements when properly configured and wired per the safety installation instructions.
What feedback devices are compatible with the PowerFlex 700S?
The drive supports incremental encoders, resolvers, and absolute encoders through optional feedback interface cards. The specific feedback option card must be selected and installed to match the motor feedback device in use.
Can the PowerFlex 700S 20F1AGC367JN0NNNNN be used for regenerative braking applications?
The drive includes an internal dynamic braking transistor, but an external braking resistor must be connected to dissipate regenerative energy. For full four-quadrant regenerative operation, an active front end or regenerative bus supply would be required.
Troubleshooting
Drive powers up but immediately trips on a Ground Fault (Fault Code 13)
Disconnect the motor cables from the drive output terminals and measure insulation resistance of each output phase to ground using a megohmmeter at 500 V DC or 1000 V DC.
If insulation resistance is below acceptable limits on the cables or motor windings, repair or replace the damaged cable or motor. If insulation is acceptable with motor disconnected, reconnect and retest to isolate the fault location.
Drive displays a Comm Loss fault after installation of a communication adapter
Verify that the communication adapter module is fully seated in the correct option slot and that the network cable is properly connected and terminated. Check the drive parameter settings for the communication channel configuration.
Re-seat the communication adapter module firmly. Confirm network address, baud rate, and protocol settings match the controller configuration. Replace the adapter module if the fault persists after reseating.
Motor runs but speed is unstable or oscillates during closed-loop vector operation
Check the encoder feedback wiring for noise, loose connections, or incorrect shielding. Verify that the encoder PPR value entered in the drive parameters matches the actual encoder specification.
Correct any wiring issues and ensure the encoder cable shield is grounded at one end only. Re-enter the correct encoder PPR value and re-run the drive autotune procedure to recalculate motor control parameters.
Drive trips on HW OverCurrent (Fault Code 12) during acceleration
Monitor output current during acceleration using the drive's diagnostic parameters or an external current clamp. Check for mechanical binding in the driven load and verify that the acceleration time is not set too short for the load inertia.
Increase the acceleration time ramp parameter to reduce the rate of current rise. Check and resolve any mechanical issues causing excessive load torque. Verify that the motor and drive are correctly sized for the application.
Drive does not respond to start command and no fault is displayed
Check the drive enable input wiring and verify that the Safe Torque Off (STO) circuit is properly energized. Confirm that the control source and reference source parameters are configured to match the intended control method (terminal block, network, or HIM).
Ensure the STO enable circuit is wired and powered correctly. Verify control source parameters match the actual command source being used. Check all digital input wiring for continuity and correct signal levels at the drive terminals.
| Condition | Repair, Used, Refurbished, New in box (sealed) |
|---|
Common defects
Common defects on a Allen-Bradley 20F1AGC367JN0NNNNN 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
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