Purchase now the 20-750-ENETR, a high-performance communication adapter designed for the Allen-Bradley PowerFlex 750-Series of variable frequency drives. This module is the backbone of modern industrial networking, providing dual-port EtherNet/IP connectivity to ensure seamless integration into high-speed automation architectures.
What Is the 20-750-ENETR?
The 20-750-ENETR is a dual-port EtherNet/IP option module that facilitates high-speed, real-time communication between PowerFlex 753 or 755 drives and a programmable automation controller (PAC). Unlike single-port variants, the ENETR features an integrated switch that supports both Device Level Ring (DLR) and linear topologies. This architecture is crucial for mission-critical industrial applications where network resiliency is required; if a single point of the network ring is severed, the DLR technology ensures the drive maintains communication without interruption. The module plugs directly into one of the drive’s internal communication slots, allowing the controller to perform remote configuration, monitoring, and precise motion control through the Drive Peripheral Interface (DPI) protocol.
Key Technical Specifications
- Protocol: EtherNet/IP
- Communication Speed: 10/100 Mbps, Full or Half Duplex
- Ports: Dual RJ45 ports with integrated switch
- Topology Support: Star, Linear, and Device Level Ring (DLR)
- Module Compatibility: PowerFlex 753 and PowerFlex 755
- Maximum Connections: Up to 30 simultaneous TCP/IP connections
- Configuration: Via Connected Components Workbench (CCW) or Studio 5000 Logix Designer
- Isolation: 50V (continuous)
Network Architecture and Redundancy
In a large-scale industrial plant, the 20-750-ENETR enables a «Connected Enterprise» by allowing drives to be part of a robust network backbone. By supporting DLR, it eliminates the need for external switches for every drive in the line, significantly reducing hardware costs and cabling complexity. This module also supports «Automatic Device Configuration» (ADC), a powerful feature where the Logix controller automatically detects a replaced drive and downloads all configuration parameters to the new unit via the ENETR module, minimizing Mean Time to Repair (MTTR) and eliminating human error during maintenance.
Maintenance Tips
To ensure peak network performance, always use shielded Category 5e (or higher) Ethernet cables with industrial-grade connectors to prevent electromagnetic interference from the VFD’s motor leads. Check the module’s diagnostic LEDs regularly; a flashing green «LINK» light indicates active data transfer, while a steady red «MS» (Module Status) light indicates an internal hardware failure. Periodically verify that the firmware of the 20-750-ENETR is updated to the latest version compatible with your Studio 5000 Add-On Profile (AOP) to avoid communication timeouts or data packet loss.
Frequently Asked Questions
Q: Can I use the two ports on the 20-750-ENETR to connect the drive to two separate networks?
A: No, the dual ports function as an integrated switch for the same network. They are designed for linear or ring topologies on a single subnet, not for multi-homing or network bridging.
Q: Does the 20-750-ENETR support CIP Motion?
A: Yes, when used with a PowerFlex 755 drive, this module supports CIP Motion, allowing the drive to be used as a high-precision axis in coordinated motion control systems.
Do you need more references from this brand? Explore our full catalog of Allen-Bradley here: https://atlantechdrives.com/manufacturers/allen-bradley/
