MELSEC-QS/WS Series
The concept of safety is shifting from "zero accidents" to "zero risk".
MELSEC Safety provides visualization of safety information, realizes safety control and boosts productivity. Select the safety control devices most suitable for your system configuration from the diverse lineup of MELSEC Safety devices.
Safety programmable controller Safety controller Safety relay module
Safety programmable controller
For mid- to large-scale safety control! Achieve flexible systems by using CC-Link IE Field, CC-Link Safety, dedicated ladder programming and function blocks.
Safety controller
For small- to mid-scale safety control! Achieve easy programming of a safety circuit by using only function blocks.
Safety relay module
For small-scale safety control! The easy way to add a safety circuit to the MELSEC-Q Series without using a program.
MELSEC QS Safety PLC
Safeguard large systems while remaining cost effective. That’s the key promise of the QS Safety PLC. In the past, production lines were protected by “islands” of safety control; typically dedicated safety relay panels. While safe, this approach suffered from many of the same disadvantages that lead to replacement of conventional relay panels many years ago. A safety relay panel is expensive to build, difficult to change and slow to troubleshoot. The QS offers a modern approach to safety by combining a distributed I/O network with the flexibility of a modular controller. This offers the capacity to cover an entire production line, while bringing the benefits of reduced wiring, rapid diagnostics and easy program modification and maintenance. Of course, since this is a safety controller however, there is a full complement of safeguards against system failure and unauthorized access. A SIL 3, Category 4 certification completes the picture.
Safety CPU module Safety main base unit Safety power supply unit Safety network Safety I/O module
Specifications
| QS Safety PLC | |
|---|---|
| I/O capacity | 6144 (max 1008 safety I/O) |
| Program memory capacity | 14 kSteps |
| Basic instruction execution time | 0,10µs |
| I/O | Distributed I/O blocks on CC-Link Safety |
| I/O types available | 3 types (8 dual in/4 dual out; 8 dual in; 4 dual out) |
| Diagnostic capabilities | 3000 records for operation and error messages |
| Network connectivity | CC-Link Safety, CC-Link IE, MELSECNET/H, Ethernet |
| Safety certifications | IEC 61508 SIL 3, ISO13849-1 PL e (EN 954 Category 4) |
Safety CPU module
CPU module especially designed for the "MELSEC-QS" safety system.
Safety main base unit
Base unit especially designed for the "MELSEC-QS" safety system.
Safety power supply unit
Power supply especially designed for the "MELSEC-QS" safety system.
Safety network
Interface modules for the "MELSEC-QS" safety system.
Safety I/O module
Remote input/output module especially designed for safety control system.
For small- to mid-scale safety control! Achieve easy programming of a safety circuit by using only function blocks.
This safety controller is in compliance with the "ISO 13849-1 Ple" and "IEC 61508 SIL3" Safety Standards and is perfect for the safety control of stand-alone-type devices and systems.
CPU module Safety I/O module Network
MELSEC WS Safety Controller, powered by SICK
The MELSEC WS Safety Controller provides a cost effective way to add a safety controller capability to individual machines, or smaller scale systems. Mitsubishi Electric is proud to announce that the WS is a joint development with SICK AG of Germany, an acknowledged leader in the global machine safety industry. Its compact size insures easy placement in most control cabinets, without adding extra cost. Configuration saves engineering time by using a graphical icon based method, and program development and certification is simplified by the use of safety function blocks. For more complex needs, the WS is also scalable by simply adding additional I/O modules. Finally, integration with conventional control systems is easily achieved with the CC-Link open network connection or Ethernet.
Specifications
| WS Safety Controller | |
|---|---|
| I/O capacity | 144 points (single channel)/72 points (dual channel) |
| Program memory capacity | Up to 255 function blocks |
| I/O | Modular units (up to 18), single or dual channel |
| I/O types available | DC safety in & out, safety relay out |
| Diagnostic capabilities | Internal state monitoring, execution error history |
| Network connectivity | CC-Link, Ethernet, EFI (direct communication with SICK safety devices) |
| Safety certifications | IEC 61508 SIL 3, ISO13849-1 PL e (EN 954 Category 4) |
CPU module
CPU module especially designed for the "MELSEC-WS" safety system.
Safety I/O module
Safety input/output module especially designed for the "MELSEC-WS" safety system.
Network
Network interface module especially designed for the "MELSEC-WS" safety system.
Safety relay module
For small-scale safety control! The easy way to add a safety circuit to the MELSEC-Q Series without using a program.
This module is perfect for small-scale safety control. Despite its simple installation it is highly effective at supporting future expansion and full /partial stop selections.
Q Series safety relay module CC-Link safety relay module Extension safety relay module
System Q Safety Relay
The QS90SR2SP safety relay module allows safety I/O to be included in a conventional System Q controller, for when it is not cost effective to specify a dedicated safety controller. The module can be mounted in a conventional System Q rack, or alternatively can be used with a decentralised connection, or on a conventional CC-Link open network. Hence it provides a high degree of flexibility for system design. The QS90 meets all relevant safety certifications such as EN 954 Category 4 and ISO 13849-1/2006 PL e.
System configurations
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Safety and conventional I/O on the same rack
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Combine local and decentralized I/O on the same system without complexity
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Add safety I/O to a standard CC-Link network along with non-safety devices
Specifications
| System Q Safety Relay | Extension Module | |||
|---|---|---|---|---|
| CC-Link Type QS90SR2SP-CC (215801, P Type) QS90SR2SN-CC (215803, N type) |
Q-Bus Type QS90SR2SP-Q (215799, P Type) QS90SR2SN-Q (215800, N Type) |
QS90SR2SP-EX (215804, P Type) QSSR2SN-EX (215805, N Type) |
||
| Safety Standard | EN 954-1 Category 4 | |||
| Safety Input | 1 pt (dual wiring) | |||
| Startup Input | 1 point | |||
| Safety Output | 1 point (dual/triple wiring) | |||
| Rated load current | Category 4 3.6A/point Up to Category 3 5.0A/point AC250V/DC30V |
|||
| Response time | Shutoff output | <20ms | ||
| Startup output | <50ms | |||
| Module power supply | DC24V | Supplied from a safety relay module | ||
| Output power supply | DC24V | Supplied from a safety relay module | ||
| Extended modules | Up to 3 extended modules | — | ||
| Terminal type | Spring clamp | |||
| Lifetime (Relay) | Mechanical | >5,000,000 times | ||
| Electrical | >100,000 times | |||
| Dimensions (WxHxD) [mm] | 45 x 111 x 111 | 55.2 x 98 x 112 | 45 x 111 x 111 | |
Q Series safety relay module
Safety relay module for mounting on the MELSEC-Q Series base unit (rack).
CC-Link safety relay module
CC-Link safety relay module for structuring a safety system using CC-Link.
Extension safety relay module
Extension safety relay module capable of expanding the basic safety relay module for the Q and CC-Link Series by up to 3 units.