3AFE68840830 ABB RETA-02 Profinet IO Adapter

3AFE68840830 identifies the ABB RETA-02 PROFINET IO adapter, an Ethernet-based fieldbus option designed to connect compatible ABB drives with an industrial control network. The module supports both PROFINET IO and Modbus/TCP, allowing drive data and control information to be exchanged through an Ethernet connection. ABB lists RETA-02 among its legacy fieldbus option modules for classic drive platforms.

RETA-02 is installed in the option slot of the compatible drive control board rather than functioning as a standalone general-purpose Ethernet interface. Its role is specifically tied to drive communication, making the exact drive family and communication architecture important when identifying a replacement part.

Communication Capabilities

 

 

 

RETA-02 provides two Ethernet-based communication options:

 

• PROFINET IO
• Modbus/TCP

 

For PROFINET IO operation, the adapter supports both the ABB Drives profile and the PROFIdrive profile. The PROFINET implementation provides cyclic data exchange together with acyclic parameter access, identification and maintenance functions, and diagnostic/alarm mechanisms in the applicable operating mode.

 

In Modbus/TCP operation, RETA-02 functions as an Ethernet bridge for communication with the drive and supports standard read/write register operations.

 

ABB's product information identifies 3AFE68840830 as the PROFINET IO adapter RETA-02, while ABB documentation describes RETA-02 as an optional fieldbus adapter for compatible drives.

The Ethernet connection uses an RJ-45 connector and supports 10BASE-TX and 100BASE-TX Ethernet. The specified transfer rate is 10/100 Mbps, with half- and full-duplex communication available. The maximum Ethernet segment length is 100 m when using the specified network arrangement.

Network configuration can be handled through drive parameters, while an 8-way DIP switch is provided for intranet IP address selection. PROFINET operation also requires an appropriate device name and GSD/GSDML-based configuration in the controller environment.

When PROFINET IO is selected, RETA-02 can operate in two principal modes:

Vendor Mode
This mode provides communication based on the ABB Drives profile and supports vendor-specific cyclic data structures.

PROFIdrive Mode
This mode uses the PROFIdrive profile and provides a drive object together with standard telegram and configurable input/output structures.

The adapter uses PROFINET slots and sub-slots to represent the device and its functional communication modules. The exact configuration is established through the GSD file in the PROFINET engineering environment.

ABB documentation identifies RETA-02 as compatible with the following drive families:

• ACS550
• ACH550
• ACS800
• ACQ800
• DCS800

Compatibility should still be checked against the specific drive model, control-board arrangement and communication requirements before replacing an installed module.

The technical data above is based on ABB's RETA-02 user documentation. The module receives its operating supply from the drive control board rather than requiring a separate external power supply.

ABB product data for 3AFE68840830 lists a net weight of approximately 0.2 kg and product dimensions of approximately 165 mm × 115 mm × 50 mm. The RETA-02 technical drawing in the user manual provides separate module/enclosure dimensions for the installed adapter, so these figures should not be treated as interchangeable with shipping or package dimensions.

 

 

Replacement Identification Notes

 

 

For procurement and maintenance records, the most important identifier is 3AFE68840830. RETA-02 is the ABB type designation and is useful when matching the communication option to the drive platform.

 

Before substituting another Ethernet or fieldbus adapter, verify:

 

• The existing drive family and model.
• The option slot arrangement.
• Required protocol - PROFINET IO or Modbus/TCP.
• Required communication profile.
• GSD/GSDML configuration requirements.
• The complete ABB ordering code shown on the installed module.

 

RETA-02 belongs to ABB's legacy fieldbus option range, so identifying the original drive platform is particularly important when sourcing an older replacement module.

3AFE68840830

RETA-02

RETA02

PROFINET IO Adapter

PROFINET Adapter

Ethernet Adapter

Ethernet Adapter Module

PROFINET IO Module

Fieldbus Adapter

Fieldbus Module

Ethernet Fieldbus Adapter

Drive Ethernet Adapter

Drive Communication Adapter

PROFINET Communication Adapter

Modbus/TCP Adapter

PROFINET IO RETA-02

Ethernet RETA-02

RETA-02 Adapter

RETA-02 Ethernet Adapter

3AFE68840830 RETA-02

What is ABB 3AFE68840830?

3AFE68840830 is the ABB product ID for the RETA-02 PROFINET IO adapter, an Ethernet fieldbus option used with compatible ABB drive systems.

Does RETA-02 support Modbus/TCP?

Yes. RETA-02 supports both Modbus/TCP and PROFINET IO.

Can RETA-02 communicate using PROFIdrive?

Yes. When configured for PROFINET IO, RETA-02 can operate using the PROFIdrive profile as well as the ABB Drives profile.

Which ABB drives use RETA-02?

ABB lists RETA-02 for ACS550, ACH550, ACS800, ACQ800 and DCS800 drive families. Exact compatibility should be confirmed against the specific drive configuration.

Does 3AFE68840830 require a separate power supply?

No separate external supply is specified for the module. The RETA-02 receives its operating power from the control board of the drive through the option-slot connection.

What Ethernet connector does RETA-02 use?

The adapter uses an RJ-45 Ethernet connector and supports 10/100 Mbps Ethernet communication.

Is RETA-02 a standalone Ethernet switch?

No. RETA-02 is a drive communication adapter installed in the option slot of a compatible ABB drive. Its purpose is to provide fieldbus/Ethernet communication between the drive and the external control network.

When requesting or checking this spare part, use ABB 3AFE68840830 as the primary order-code reference and RETA-02 as the corresponding type designation. For installed-drive replacement, matching the adapter with the drive family and existing communication configuration is recommended before ordering.

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