Safety controller MELSEC-WS Series

This compact safety controller complies with EN ISO 13849-1 Category 4/Ple and IEC 61508 SIL 3 safety standards. It is ideal for small to medium-scale safety control system. Safety I/O points can be extended to 144 points per CPU module according to the system configuration. Utilizing the dedicated setting and monitoring tool^*1, setup and logic creation can be easily done.

• For details on how to obtain the tool, please contact your local Mitsubishi Electric sales office or representative.

MELSEC-WS Series system configuration

• No. of input points: 8 points (single wiring), No. of output points: 4 points (single wiring)
• No. of input points: 8 points (single wiring)
• Safety relay output: 4 points

Flexible extensibility

• Up to 12 safety input and I/O modules, 4 safety relay output modules, and 2 network modules can be installed.
• I/O points can be extended to 144 points (single input).
• Safety input: 96 points (single input) and safety output: 48 points (single output).

Fast shut off function realizing a response time of 8 ms

Fast shut off function that enables the safety I/O module to shut off safety output without going through the CPU module realizes a response time of 8 ms. This system can shorten safety distances in the safety system.

Flexi Line/Flexi Link
Safety communication network between safety controllers

Safety communications between safety controllers can be easily established at a low cost just by connecting the CPU modules with dedicated cables. Safety communication is realized without a dedicated network module, allowing utilization in various production site. In addition, coordination between multiple devices is possible, improving production system safety.

• Flexi Line is supported by WS0-CPU3 only and Flexi Link is supported by WS0-CPU1 and WS0-CPU3 only.

Safety control can be easily added to existing MELSEC PLCs (CC-Link/Ethernet)

Applicable functions with network interface

Connecting the safety controller to CC-Link, safety control can be performed with the existing MELSEC iQ-R/Q/L module. Furthermore, operation status and error status of the safety controller can be monitored with the existing MELSEC iQ-R/Q/L module. This helps quickly identifying the factor of emergency stop and faulty equipment.

Dedicated "Setting and Monitoring Tool^*6" provides intuitive system configuration environment

■ Configuration

Hardware configuration can be easily and quickly done using a wide range of elements.

• For details on how to obtain the tool, please contact your local Mitsubishi Electric sales office or representative.
• Connecting parameters of major safety equipment, such as emergency stop switches, safety door switches and light curtains, are expressed by an icon.

Make settings simply by drag-and-drop decision. Elements for safety devices of mitsubishi's partners are also available. Please contact your local Mitsubishi representative.

Logic Editor

Elements connected to the I/O terminal are automatically labeled, enabling logic creation easier using labels and function blocks.

Diagnosis/monitor

Monitoring of the internal status of modules and error histories is possible.

Report

The wiring diagram for I/O modules can be automatically created. Report such as error diagnosis can be created, printed, and saved as PDF.

I/O matrix

The relation of inputs and outputs can be displayed as a matrix.

Data recorder

ON/OFF status of safety input signal and safety output signal processed by the safety controller can be stored.^*8 Results recorded on the Setting and Monitoring Tool can also be viewed on the computer to utilize for troubleshooting.

• Available when a CPU module with firmware version of V2.01 (revision 2.XX) or later and a setting and monitoring tool of V1.7.0 or later are used together.

Import and export of logic

The connection settings to the I/O modules or application logic created with function blocks can be stored in a single setting file, and data can be read out of stored setting files.