RETA-02 ABB Drive Communication Option

RETA-02 | ABB Ethernet Adapter Module

Drive-network interface • Ethernet-based command and feedback • Modbus/TCP and PROFINET IO support

The ABB RETA-02 is an optional Ethernet communication adapter installed in a compatible ABB drive’s control-board option slot. It connects the drive to an Ethernet control network, allowing a supported master station to exchange commands, references, status data and actual values with the drive.

On the network, the drive operates as a slave/device. The adapter supports Modbus/TCP and PROFINET IO, subject to the capabilities of the selected master and the drive’s supported configuration. It can also provide access to drive parameters and fault-reset commands through the communication interface.

Communication capabilities: command, reference, feedback

These functions depend on the drive model, firmware, communication profile and master-station configuration. Confirm the applicable drive documentation before assigning control or parameter functions.

Network compatibility and protocol considerations

RETA-02 is compatible with master stations supporting Modbus/TCP. PROFINET IO can be used with masters that support PROFINET IO and sub-slots. The manufacturer notes that functionality is limited when the PROFINET master does not support multiple sub-slots per slot.

Before commissioning, verify which protocol the drive application will use and confirm the master’s configuration support. Do not assume that Modbus/TCP and PROFINET IO are simultaneously active or interchangeable in every installation.

Physical installation and module data

Package contents: RETA-02 Ethernet Adapter module and two M3×10 screws. The supplied information does not specify a network cable; select a suitable CAT 5 cable and RJ-45 connection arrangement for the installation.

Where RETA-02 fits in a drive system

• PLC-controlled motor drives: exchange run commands, operating references and status feedback between a supported controller and an ABB drive.
• Conveyor and material-handling systems: integrate drive command and monitoring data into an Ethernet-based machine control network.
• Pumps and fans: provide networked speed-reference and status exchange for drive applications; process PID functions depend on the drive configuration.
• Process machinery: support supervisory control, parameter access and fault-reset handling through the configured protocol.
• Retrofit and network integration: add Ethernet communication to a compatible drive that has the required option slot and supports RETA-02.

RETA-02 is a communication option, not a standalone drive or an independent Ethernet controller. Confirm the exact ABB drive type, option-slot availability, firmware requirements and protocol support before ordering.

Commissioning sequence for controls engineers

1. Check drive compatibility. Consult the drive’s hardware and communication-option documentation to confirm RETA-02 support and the correct installation slot.
2. Install safely. Isolate the drive from its power source and follow the drive manufacturer’s procedures for option-module installation. Secure the module using the supplied M3×10 screws.
3. Configure the network. Set the IP address using the module’s 8-way DIP switch and configure the selected protocol in the drive and master station.
4. Validate master support. For PROFINET IO, confirm support for the required sub-slot arrangement. For Modbus/TCP, verify the master’s device configuration and data mapping against the applicable documentation.
5. Test data exchange. Start with non-hazardous status monitoring. Confirm actual values and status words before enabling remote control.
6. Prove command behavior. Test Start, Stop, Run Enable, reference updates and fault reset under an approved commissioning procedure. Verify that loss of network communication produces the intended machine response.

Remote commands and fault reset should be incorporated into the machine’s risk assessment and control design. The adapter’s communication functions should not be treated as a substitute for a required safety-rated control path.

Network and drive diagnostics

The supplied product information describes communication functions and network characteristics but does not provide a RETA-02-specific LED code table or detailed fault-code list. Use the applicable ABB drive and adapter manuals for device-specific diagnostic indications.

Global PLC Spare HUB's Insight

When specifying RETA-02, engineers should treat the master-station protocol and the drive’s control-source configuration as a paired compatibility check. A physical Ethernet link alone does not prove that command words, references or feedback data are correctly mapped.

For replacement or retrofit work, identify the ABB drive model and firmware, confirm that the option slot supports this adapter, and determine whether the intended network is Modbus/TCP or PROFINET IO. If the system uses PROFINET IO, verify the master’s sub-slot capability before purchasing. These checks help prevent a module that fits mechanically but cannot deliver the required network function.

Warranty and shipping

• Warranty: 12 months, subject to supplier warranty terms.
• Shipping options: FedEx, UPS and DHL, subject to destination and shipment arrangements.
• For a quotation: provide the RETA-02 model, quantity, ABB drive model, intended protocol and delivery destination so compatibility and shipping can be reviewed.

Frequently Asked Questions

Q1. What information should I confirm before buying this communication option?

Record the complete drive type, firmware where available, installed option-slot arrangement, required Ethernet protocol and master/controller model. Confirm RETA-02 support in the drive documentation rather than relying on the adapter’s general ABB branding.

Q2. Can a Modbus/TCP controller use the module for both drive control and monitoring?

The stated interface supports commands, references, status information and actual-value exchange over Modbus/TCP. The exact data items and mapping depend on the drive and its communication configuration, so verify the applicable drive manual and master setup.

Q3. What should be investigated if PROFINET IO identifies the device but data exchange is incomplete?

Review the PROFINET device configuration and the master’s support for sub-slots. The manufacturer notes that functionality is limited when the master does not support multiple sub-slots per slot. Also check the configured data layout against the drive’s supported profile.

Q4. Is RETA-02 suitable for an installation exposed to dust, water or outdoor weather?

The module is rated IP20 and mounts inside the drive’s option slot. Its environmental limits follow those specified for the drive in its Hardware Manual. The complete drive enclosure and installation conditions must provide the required environmental protection.

Q5. During a retrofit, how can I reduce commissioning downtime?

Before shutdown, document the existing drive parameters, network settings, controller data mapping and command sequence. After installation, verify network communication and feedback first, then test commands in a controlled sequence. Keep the previous configuration and the relevant ABB manuals available for comparison.

Tags