Robot Controller Retrofit for KUKA & ABB | 1/3 the Cost of OEM Replacement

WHY RETROFIT

Why Retrofit Instead of Replace?

If the robot mechanics are still in good condition, replacing the entire robot may not be the most practical option. A controller retrofit can preserve the value of the existing mechanical asset while addressing obsolete electronics, unsupported controllers and costly legacy spare parts.

Controller retrofit is most suitable when the robot arm remains mechanically serviceable but the original controller, drives, teach pendant or spare parts are obsolete or difficult to maintain.

Modernize Without Replacing the Robot

Keep mechanically sound robot arms in service by replacing aging control systems with modern control technology.

Create More Value from Refurbished Robots

Combine local inspection, mechanical refurbishment and service capabilities with our retrofit cabinets, technical support and China-based manufacturing resources.

A Practical Alternative to Obsolete Controllers

When original controllers, drives or teach pendants become difficult or expensive to source, a retrofit can provide a more sustainable alternative to increasingly scarce legacy parts.

Industrial Robot Retrofit Cabinet

An industrial robot controller retrofit replaces an obsolete control system while retaining a mechanically serviceable robot arm. A retrofit cabinet is configured around the robot's motors, feedback system, wiring, safety architecture and application interfaces. It provides the cabinet configuration, wiring adaptation and industrial communication integration required to return an aging robot to service.

MOTION-CONTROL FOUNDATION

Selected HH Industrial retrofit cabinet configurations are built around the Inexbot Motion Control System, providing the motion, logic and communication layer required for modern robot control.

Explore the Motion Control System →

Inside view of the YQ04L industrial robot retrofit control cabinet showing servo drive modules and wiring — YQ04L retrofit cabinet — internal drive and wiring layout

MODULAR CONTROL

Robot-Specific Control Configuration

The reference cabinet is configured around the robot axes, motors, feedback and application requirements.

COMMUNICATION

Cabinet & Wiring Adaptation

Cabinet layout, field wiring, safety, I/O and peripheral interfaces are evaluated for the selected robot platform.

ENGINEERING ACCESS

Modern Communication Integration

Industrial communication interfaces such as EtherCAT and PROFINET can connect the retrofit to current PLC, I/O and production environments.

Technical Scope

Final electrical, motion and interface specifications depend on the robot model, motors, feedback, wiring, safety and application load. Detailed motion-control architecture is covered in the Motion Control System reference.

YQ04L REFERENCE CONFIGURATION

A modular cabinet platform configured around the robot.

Power input

3-phase 380 V + neutral, integrated servo drive architecture

Axis configuration

2-6 axes, with optional auxiliary axis

Drive modules

5-50 A module options; up to 50 A per axis

Control cycle

2.5 microsecond current loop; 62.5 microsecond speed/position loop

Communications

1× EtherCAT, 1× Ethernet

Ports

1× RS232, 1× RS485

I/O

18-input, 18-output, with optical isolation

CAN

1× CAN 2.0

Encoder

1× 5V encoder, ABZ differential interface

Analog I/O

0–10V, 4 input channels, 4 output channels, 12-bit accuracy

Protocol support

EtherCAT, EtherNet/IP, TCP/IP, ModbusTCP, ModbusRTU

Demonstrator

Optional T30-X trainer: 8-inch TFT full-touch screen with Linux + QT

Working temperature

-5°C to 45°C

Dimensions

Without wheels: 800 × 550 × 930 mm; with wheels: 800 × 550 × 1025 mm

Protection level

IP54

Total weight

106 KG

Final configuration

Defined by robot model, motors, feedback, wiring, safety, and application load

Reference values are based on YQ04L controller documentation. Final electrical, motion, and interface specifications require model-level evaluation.

CE certification for the YQ04L control cabinet, Low Voltage Directive and EMC Directive

CE Certified

The control cabinet product line is CE certified to the EU Low Voltage Directive and EMC Directive.

Certificate No. M.2025.206.C126254

RETROFIT APPLICATIONS

Robot Controller Retrofit Applications

We support integrators evaluating controller replacement for established robot applications. Final cell engineering, risk assessment, and site integration remain under the integrator's control.

Welding Robots

Modernize control and communication while retaining suitable robot mechanics, welding equipment, and partner-owned process engineering.

Handling Robots

Adapt controller, I/O, and safety interfaces for glass, sheet, tile, food, and other established transfer applications.

Machine Tending

Support updated machine communication and peripheral interfaces for loading, unloading, and legacy tending applications.

Legacy Robot Systems

Evaluate controller replacement when original control hardware is obsolete or difficult to maintain.

IN THE FIELD

Retrofit cabinets running in active production.

Retrofit control cabinet installed alongside a handling robot on the shop floor — Retrofit cabinet installed with a handling robot

Retrofit robot on an automated tile and stone processing line — Automated tile/stone processing line

Retrofit cabinet commissioning on a gantry-style handling cell — Retrofit commissioning on a gantry-style cell

Retrofit robot palletizing stone slabs in a yard operation — Palletizing application, yard operation

ABB Retrofit

ABB robot controller retrofit requires platform-specific evaluation of the robot model, existing controller, motors, feedback signals, wiring, and peripheral interfaces. We support integrators with compatibility assessment, wiring adaptation, interface conversion, and technical documentation before the retrofit configuration is confirmed.

ABB S4C Plus and IRC5 controller generations supported for retrofit — Reference compatibility: ABB S4C Plus & IRC5

Platform Evaluation

Reference compatibility covers ABB S4C Plus and IRC5 generations, including IRB 6400, 6600, 6640, and 6700 series examples.

Interface Scope

Motor feedback, cabinet wiring, safety circuits, I/O, fieldbus, and peripheral interfaces are checked against the proposed controller configuration.

IRC5 second-generation and OmniCore-related environments require case-by-case technical review. Compatibility references do not imply ABB authorization or affiliation.

WATCH ON YOUTUBE

How to Wire an ABB Retrofit Cabinet

Request an ABB Retrofit Evaluation →

KUKA Retrofit

KUKA robot controller retrofit focuses on KRC system modernization and the compatibility differences between robot generations. We evaluate the existing KRC controller, wiring, motor and encoder interfaces, safety architecture, and communication requirements to help integrators define a technically appropriate retrofit path.

KUKA KRC1, KRC2, KRC4, and KRC5 controller generations supported for retrofit — Reference compatibility: KUKA KRC1 · KRC2 · KRC4 · KRC5

Heavy-Payload KR Series Adaptation

KR60 KR150 KR180 KR200 KR210 KR240 KR360 KR500

Platform Evaluation

Reference compatibility spans KRC1, KRC2, KRC4, and KRC5 environments, with heavy-payload KR60, KR150, KR180, KR200, KR210, KR240, KR360, and KR500 series examples in the controller documentation.

KRC Modernization Scope

Controller generation, motor and encoder signals, wiring differences, safety design, payload, and application interfaces are evaluated before configuration.

Final support depends on the exact KUKA robot, KRC generation, installed options, and machine condition. Compatibility references do not imply KUKA authorization or affiliation.

WATCH ON YOUTUBE

How to Wire a KUKA Retrofit Cabinet

Request a KUKA Retrofit Evaluation →

HOW IT WORKS

A clear path from legacy controller to compatible retrofit.

Technical Evaluation

We review the robot model, controller, wiring, application, safety, and interface requirements.

Retrofit Configuration

We coordinate cabinet specification, wiring adaptation, interface conversion, and required documentation.

Verification Support

We provide test records and technical support so the integrator can complete application validation and site integration.

DOCUMENTATION & LIFECYCLE SUPPORT

Warranty

The YQ04L reference service scope includes a 1-year controller cabinet warranty.

Remote Technical Support

Connectivity supports basic monitoring and remote electrical diagnostics, with a documented 48-hour remote response target.

Engineering Documentation

Operation and maintenance manuals, video guidance, training, and remote commissioning support are available for integrator teams.

ROBOT CONTROLLER RETROFIT FAQ

Industrial robot controller retrofit: frequently asked questions

Answers for manufacturers, automation partners and system integrators evaluating an ABB or KUKA robot controller replacement.

What does the robot controller retrofit replace?

It completely replaces the original control cabinet while retaining the existing robot arm. The original KUKA/ABB controller and control electronics are no longer required.

Why retrofit instead of buying a new robot?

If the robot arm is mechanically sound, retrofitting can extend its service life at a lower cost and with fewer mechanical changes than full replacement.

Which robot brands are supported?

We currently support selected ABB and KUKA robot models. Compatibility is evaluated case by case.

How does the retrofit cabinet connect to a KUKA robot?

Our cabinet uses its own motion-control hardware and software. It connects to the robot through the required motor feedback and industrial interfaces without changing the robot’s mechanical structure.

Are the original KUKA motors and resolvers retained?

Yes. Our cabinet works directly with the original KUKA motors and resolver feedback. In most projects, there is no need to replace the motors or install additional feedback devices.

What information is required to confirm compatibility?

Please provide the robot brand and model; in some cases, motor, resolver, and electrical information may also be required.

Can the retrofit controller connect to PLCs and other equipment?

Yes. Depending on the configuration, it can communicate with PLCs, production equipment, and factory networks through I/O and industrial communication protocols such as PROFINET and EtherCAT.

Can the retrofitted robot be used for palletizing, handling, welding, and other applications?

Yes, subject to technical evaluation. It can support palletizing, handling, welding, material handling, machine tending, and material processing. Welding equipment can exchange commands and status signals with the robot controller through I/O or fieldbus communication.

Will the robot maintain its accuracy and repeatability?

The robot arm remains unchanged, so its performance mainly depends on its mechanical condition, calibration, and commissioning quality.

Has the retrofit solution been used in real factories?

Yes.

Does the control cabinet have CE certification?

Yes. CE certification is available for the control cabinet.

Robot Mechanics Still Good. Controller Aging Out. Retrofit It.