What is a safety module and what are its functions?
A safety module is an electronic device consisting of at least two relays and a microprocessor chip. It allows monitoring of specific functions, reacting when it detects abnormalities. When combined with other safety components, such as safety switches and light curtains, it forms a complete machine safety system.
Immediate power cut-off is not the only function of safety modules. They can also prevent unintentional starting, limit speed, position, or allow controlled stop or controlled hold, that is, stopping the machine while maintaining power.
Harmony XPS safety relays - learn more about our products
We offer Harmony XPS (previously Preventa XPS) safety modules. These are high quality products from Schneider Electric, developed on the basis of many years of experience of the Telemecanique brand.
Harmony XPS Series breakdown:
- Harmony XPS Basic are basic modules with a predefined safety function. They provide the most optimal solution for uncomplexed applications.
- Harmony XPS Universal are universal safety modules with a pre-defined safety function or a safety function selected by rotary switches. They combine the simplicity of using safety modules with the variety of messages for which more complex and expensive Fieldbus technology was previously required.
XPSBAC type safety module
It is used for monitoring monitor E-stop and Guard switch. It has 4 NO safety outputs and a built-in, configurable NC output for signaling to the PLC.
XPSBAT type safety module
is used for monitoring Emergency stop circuits. In addition to the immediate opening outputs, it also includes a time delay output up to 900 s.
XPSUAF type safety module
is used to monitor various safety components, such as light curtains, mechanical guard switches and others. The safety functions and the start function are selectable.
Find out more about safety modules
