Efficient and secure configuration of safety functions with the SL VARIO Designer.
With the SL VARIO Modules, you can easily and reliably set up important safety functions like E-stops, safety doors, or light curtains. This guide explains the most important functions in simple, understandable steps.
Configuration
In the software, you give your safety function a clear name and a short description. You can also select a suitable symbol that visually represents the function, for example, the icon for an E-stop button.
Control (E1/E2)
The control defines how the module recognizes the signals from your switches. There are three options:
-
static: The signal is continuously active as long as the switch is engaged.
-
antivalent: Two signals are switched in opposition. If one is active, the other is inactive. This helps to detect faults immediately.
-
clocked: The signals pulse in a fixed rhythm. This method offers the highest level of safety, as the module can constantly check the connection.
Initial State After Power-On
This setting is crucial for safety. It determines whether the safety circuit requires a manual check after the machine is restarted or after a fault has been reset.
If this option is active, the safety circuit must be briefly operated once to confirm that everything is in order. Only then can the machine start up normally again.
Acknowledgment
Acknowledgment is the step you take to release a triggered safety circuit, allowing it to be reset.
You can set up acknowledgment in different ways:
-
with Input Q: You use a separate button to confirm the release.
-
automatic, without acknowledgment: The safety circuit reactivates on its own as soon as the original fault has been resolved.
The acknowledgment can also be triggered in two ways:
-
with falling edge: You press a button briefly, and the signal is recognized by the change from "on" to "off."
-
with high level: You must hold down the acknowledgment button for the signal to be recognized.
Important Note: An E-stop function must always be manually acknowledged to be released. An automatic restart is not possible in this case.
Important Note: An E-stop function must always be manually acknowledged to be released. An automatic restart is not possible in this case.