Mitsubishi Electric provides a total safety solution by incorporating safety control devices, safety drive devices, and safety components required for safety systems. This allows visualization of safety information, realizing optimal safety control and boosting productivity.

Safety within the automation industry is not only required by regulations, but there are also ethical implications to providing a safe working environment. Machine safety has become an important design concern as it must provide protection for operators and technicians in a manner that keep the machines running to the fullest degree possible.



QS Safety Controller

The "MELSEC-QS Safety programmable controller" is designed for safety control, compliant to the international safety standards EN954-1 Category 4, ISO13849-1 PL e, and IEC61508 (JIS C 0508) SIL 3.*1 The QS can be connected to an emergency stop switch, a light curtain, etc., to shut off (safety output OFF) the power of hazard sources (robots etc.) according to user programs. Operation of machines (robots, conveyors, etc.) is controlled by standard programmable controllers. The major difference is that the QS is equipped with a safety function which can forcibly turn off the safety output by error diagnostics.

WS-Series -Safety

WS Safety Controller

This compact new safety controller complies with ISO13849-1 PLe and IEC61508 SIL3 safety standards.
The most suitable application of MELSEC-WS is to ensure safe operation of stand-alone machines or systems.  To meet your system configuration, it allows you to have additional I/O points of up to 144. Also, you can easily make settings and create logic by using the Setting and Monitoring Tool exclusively provided for the controller.


Safety _Relay _Modules

Safety Relay Modules

The safety relay module embeds a safety circuit that complies with safety standards "EN954-1 Category 4 and ISO13849-1 PL e."  With this module, a basic safety function is available by just wiring, without the need for programming.

Safety _servo

AC Servo Safety

The MR-J3-B Safety integrated AC servo amplifier (SSCNETIII compatible) and MR-J3-D05 safety logic unit are certified for IEC/EN 61508 SIL 2, EN 62061 SIL CL 2 and EN ISO 13849-1 PL d (Category 3) by a Certification Body (TÜV Rheinland). As a safety function, the MR-J3-B Safety has an integrated Safe torque off (STO) function. Safe stop 1 (SS1) function can be achieved by combining the MR-J3-B Safety amplifier with the MR-J3-D05 safety logic unit. These functions contribute to improvement of safety in the user's system, making it easy to obtain third-party certifications. If an MR-J3-B or MR-J3-B-R006 amplifier is currently used in a system, it can be easily replaced by the MR-J3-B Safety because it uses the same cables/connectors and contains the fully closed loop control system.


VFD Safety

The D700 and E700-SC Adjustable Frequency AC Drive Families are suitable for Emergency Stop according to EN 60204-1, Stop Category 0 within safety related applications according to EN 954-1 up to Safety Category 3.  The drive must be connected to a pre-approved Category 3 external safety device such as a Safety Relay. Incorporating the Safe Off Torque inputs into the drive allows for the removal of magnetic contactors between the drive and motor.

Safety _CNC

CNC Safety

 The M700, M70, and C70 series controls meet the EN954-1 Category 3 machine tool safety standards.
Functions related to this standard are:

  • Safety Signal comparisons
  • Speed monitoring between the command speed and actual speed of the Servo and Spindle motors.
  • Redundant Emergency Stop which provides the Drive Unit's main power to be shutdown via two routes.
Robot _Safety

Robot Safety

All SD and SQ series robot conform to ANSI/RIA/ISO 10218-1-2007 "Robots for Industrial Environment - Safety Requirements".  This standard is now recognized as the de facto robot safety standard in the United States.  The standard pertains specifically to robot construction. Features supporting this directive include:
Redundant safety circuits to insure reliable and safe wiring.

  • Emergency stop inputs and outputs allow E-stop functionality for peripherals and associated machinery.
  • Inputs for auxiliary 3-position enabling devices provide a safe environment for multiple operators or maintenance personnel.
  • Interlock inputs for control of zone safety from external switches and sensors.
  • Controller mode outputs enable greater system safety design.
  • Robot error output for annunciation and reporting tasks.
  • Auxiliary servo synchronization output to safely coordinate external axes controlled by the robot.
Safety _Devices

Safety Devices

Safety devices are an important part of safeguarding machines and applications. Mitsubishi Electrics connection to SICK safety devices allows the creation of safety solutions to protect against injury and create a safer working environment for employees.