Safety Outputs - Leuze electronic MSI 400 Operating Instructions Manual

NOTICE
Recommendation for sensors and line lengths
i
The maximum line length between sensor and module is dependent, to a large extent, on the
output type of the sensor. In order to achieve good, and as fault-free transfer as possible, we re-
commend using sensors with push-pull outputs alongside a screened line earthed on both sides.
Ä Sensor with High-side output: max. 15 m
Ä Sensor with Push-pull output: max. 50 m
4.6

Safety outputs

Safety-based devices must be suitable for safety-relevant signals!
An interruption in the function of safety outputs will lead to a loss of safety functions, which
means that there will be a risk of severe injury.
Ä Do not connect any loads that exceed the rated values of the safety outputs.
Ä Wire the MSI 400 system such that no 24 V DC signals can unintentionally make contact
with the safety outputs.
Ä Connect the GND lines of the power supply to ground so that the devices do not switch on
when the safety output line is at ground potential.
Ä Use suitable components or devices that fulfill the applicable guidelines and standards.
Ä Actuators can be wired at the output as single-channel. To ensure that the corresponding
safety integrity levels can be adhered to, the lines must be routed such that short-circuits to
other signals can be prevented, e.g. by routing them within protected areas such as switch-
boxes or in separate shielded cables.
Leuze electronic
WARNING
MSI 400
Connecting devices
53