Providing safety features certified by a third party, including speed and area monitoring functions.

Yamaha Robotics announced today that it will release the functional safety option unit RCX3-SMU for SCARA robots and Cartesian robots with three or more axes controlled by the robot controller RCX340 in June of this year.

As demand for industrial robots expands against the backdrop of labor shortages, rising labor costs, and the need for advanced automation in new fields such as IoT/CASE, safety requirements for industrial robots are also increasing.

The RCX3-SMU has been certified for functional safety by the certification body TÜV SÜD and is equipped with safety functions that comply with the robot safety standard ISO 10218-1. The STO function, SS1 function and speed monitoring function, etc. support the design of safe equipment.

Yamaha Robotics is a comprehensive small robot system supplier that offers a wide range of products, including linear conveyors, single-axis robots, SCARA robots, vision systems, and controllers used in automated production lines. The company works to provide the best solutions to meet the diverse needs of our customers.

Robot controller option RCX3-SMU and robot controller RCX340Robot controller option RCX3-SMU (left) and robot controller RCX340

Main safety features of RCX3-SMU
1) STO (Safe Torque Off) function
The built-in main power supply (power supply for driving the motor) switch circuit cuts off the power supply to the controller. (=Safe state)

2) SS1 (Safe Stop 1) function
Monitors the robot’s deceleration and stopping status. If the robot stops, or does not decelerate at the appropriate deceleration rate or time, this function executes the STO function and transitions the process to a safe state.

3) Speed monitoring function (SLS)
Monitors the speed of the robot. If the set speed is exceeded, the SS1 function is executed.

4) Area monitoring function (SLP)
The robot’s Cartesian coordinate position and motor pulse position are monitored. If the setting range is exceeded, the SS1 function will be executed.

5) Safety input function
Monitors the status of the safety input port. The SS1 function is executed according to the status of the safety input port and the safety input function (emergency stop, mode select, manual mode protection stop, etc.) set for each port.

6) Safety output function
Each safety output port outputs the set internal state (emergency stop state, safe state, etc.)

Safety feature examplesSafety feature examples

Basic Specifications

Basic Specification

For more information, please visit RCX3-SMU Product Site:

Note: Simply using the RCX3-SMU cannot prevent damage to people or equipment. It is the customer’s responsibility to carry out appropriate risk assessments and safety measures for facilities that use robots.


About Yamaha FA Section

Yamaha Factory Automation Section (FA Section), a subdivision of Yamaha Motor Robotics Business Unit in Yamaha Motor Corporation, is focused on delivering flexible, high-accuracy industrial robots for precision automation challenges.

With its roots in the introduction of robot technology to Yamaha motorcycle assembly activities, the division has over 40 years’ experience solving automation challenges from factory-scale to micron-level. Yamaha’s industrial robots are now trusted by leading corporations worldwide, in activities as diverse as semiconductor fabrication and assembling electronic products, domestic appliances, automotive components, and large liquid-crystal panels.

Yamaha Motor FA Section offers a unified range of solutions for robotic assembly, including single-axis robots, SCARA, cartesian, and articulated robots. Innovations such as the LCMR200 linear conveyor module; a smoother, space-saving and more versatile successor to conventional belt and roller conveyors continue to set the pace in factory automation. Core robotic technologies as well as key components and complete robot systems are all produced in-house, ensuring consistent quality and control over lead-times.

Headquartered in Neuss, Germany, Yamaha FA Section serves customers in all Europe.