Configured for precision motor torque and speed regulation in industrial drive networks, the Allen-Bradley 20G11NC5P0JA0NNNNN (20G11NC5P0JA0NNNNN AC Drive) provides direct physical and electrical execution of variable frequency control.

Catalog Identification and Configuration

• Catalog Number: 20G11NC5P0JA0NNNNN

• Base Series: PowerFlex 755

• Drive Type: AC Input with Precharge

• Enclosure Rating: IP20/IP00 (Open Type)

• Thermal Management: Air Cooled

• Integrated Transistor: Internal Dynamic Braking Transistor

• HIM Interface: Not Included

Technical Hardware Specifications

Control Architecture and Deterministic Connectivity

The PowerFlex 755 platform utilizes integrated EtherNet/IP deterministic networks to facilitate real-time data exchange and command execution. System performance is maintained through high-speed backplane bus communication, supporting scalable I/O density. Firmware compatibility is maintained via standardized flash update procedures, ensuring operational alignment with existing control topologies. Precise tuning of the drive parameters is required to mitigate communication jitter in multi-axis synchronization applications.

Package Contents

• 1 x 20G11NC5P0JA0NNNNN PowerFlex 755 AC Drive

• 1 x Technical documentation package

• 1 x Jumper set (Pre-installed)

Field Mounting and Grounding Directives

• Mount the unit in a vertical orientation to ensure optimal airflow through the internal heat sink assembly.

• Maintain a minimum distance of 100 mm from adjacent equipment to prevent thermal throttling under continuous load.

• Utilize shielded motor cables and ensure a 360-degree termination of the shield at the drive ground lug to reduce high-frequency EMI.

• Confirm that the supply voltage matches the drive nominal input rating before closing the AC input circuit breaker.

Frequently Asked Questions

• Does the internal braking transistor require external resistors?

  Yes, the internal transistor acts as a switch; an external dynamic braking resistor must be connected to the appropriate DC bus terminals to dissipate regenerated energy.

• Is the IP20 rating suitable for washdown environments?

  No, the IP20/IP00 rating is intended for installation inside a secondary NEMA/UL-rated enclosure to protect against environmental contaminants and liquid ingress.

• Can this drive communicate via protocols other than EtherNet/IP?

  The PowerFlex 755 supports various option cards for alternate network protocols; however, standard functionality relies on the integrated EtherNet/IP port.

• How is the drive reset after a fault trip?

  The drive can be reset via the control software, a digital input, or by cycling the control power if the fault condition has been cleared.

• What is the function of the internal precharge?

  It regulates the charging rate of the DC bus capacitors, preventing excessive current spikes during initial power-up.

• Does this unit support field-oriented control (FOC)?

  Yes, the drive architecture supports FOC for high-performance speed and torque regulation of induction and permanent magnet motors.

• Can multiple drives be linked on a shared DC bus?

  Yes, the DC terminals allow for shared DC bus configurations, provided the total current and voltage ratings are properly managed by system fusing.

• Is the firmware field-upgradeable?

  Yes, firmware can be updated using the manufacturer's software tools via the Ethernet port; consult the technical manual for specific version compatibility.