Safety relay
With the MSI safety relays, individual safety sensors can be integrated quickly and easily into the safety circuit of machines and systems. The MSI contact extensions are used both as an output extension for OSSDs and for contact multiplication for evaluation units and safety controls.
Relay
- Evaluation units for all common safety sensors
- Models with time delay
- Models for testing single light beam safety devices
Contact extensions
- Contact extensions for safety relays and controls
- Output extensions for OSSD outputs
Safety relays
With the MSI safety relays, individual safety sensors can be integrated quickly and easily into the safety circuit of machines and systems. The MSI contact extensions are used both as an output extension for OSSDs and for contact multiplication for evaluation units and safety controls.
Advantages for you
- Compact and safe
For the fast integration of individual safety sensors into the safety circuit of systems and machines, the safety relays offer the right solution. - Diverse application possibilities
The application possibilities range from the monitoring of simple components such as E-Off, through to the integration of optoelectronic sensors. - Flexible installation and replacement
The pluggable screw and spring-cage terminals allow the safety relays to be installed flexibly and replaced quickly.
Know-how
Areas of application
Evaluation units
Evaluation of individual safety sensors: Available in the Safety product range are both evaluation units that are specifically tailored to various sensor types and technologies as well as units that can be used universally. Relay models with time delays up to 3 seconds as well as up to 30 seconds are used for applications with stop category 1.
Contact extensions
The contact-extension relays are suitable as simple output extensions for OSSDs and also for contact multiplication for evaluation units or safety controls.
Safety relay as part of the safety function
The safety function ensures that the drive can be shut down safely at all times – when the sensor is triggered and if a fault is detected. Here, the safety-related part of a control system (SRP/CS) in accordance with ISO 13849-1 is the central component necessary for execution of a safety function. This component evaluates signals coming from the sensors, detects cross-circuits on the sensor side and faults in the contactor. It also ensures safe shutdown of the drive. A safety sensor alone cannot fulfil these tasks – safety sensors are always just part of a safety function. In the simplest case, a safety relay performs the necessary tasks. The safety function is usually triggered by a person. Here, the technology of the safety relay recognizes the signals coming from the sensor and, via the shutdown paths, disconnects the supply voltage to the contactor – and the contactor in turn disconnects the power supply to the drive.
Evaluation units
Evaluation of individual safety sensors: Available in the Safety product range are both evaluation units that are specifically tailored to various sensor types and technologies as well as units that can be used universally. Relay models with time delays up to 3 seconds as well as up to 30 seconds are used for applications with stop category 1.
Contact extensions
The contact-extension relays are suitable as simple output extensions for OSSDs and also for contact multiplication for evaluation units or safety controls.
Safety relay as part of the safety function
The safety function ensures that the drive can be shut down safely at all times – when the sensor is triggered and if a fault is detected. Here, the safety-related part of a control system (SRP/CS) in accordance with ISO 13849-1 is the central component necessary for execution of a safety function. This component evaluates signals coming from the sensors, detects cross-circuits on the sensor side and faults in the contactor. It also ensures safe shutdown of the drive. A safety sensor alone cannot fulfil these tasks – safety sensors are always just part of a safety function. In the simplest case, a safety relay performs the necessary tasks. The safety function is usually triggered by a person. Here, the technology of the safety relay recognizes the signals coming from the sensor and, via the shutdown paths, disconnects the supply voltage to the contactor – and the contactor in turn disconnects the power supply to the drive.
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