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Chapter
3
Operating instructions
Flexi Classic
26
© SICK AG • Industrial Safety Systems • Germany • All rights reserved
8011509/YPP0/2015-10-26
Subject to change without notice
Product description
3.3.3
Outputs
You have two possibilities to reach SIL3 or Category 4 for your application:
•
dual-channel wiring of the outputs, e.g. Q1/Q2 to K1/K2
or
•
single-channel wiring
only with routing within protected areas
such as in a control
cabinet, e.g. Q1 to K1/K2.
Safety-oriented devices must be suitable for safety related signals!
A function interruption of safety outputs results in a loss of the safety functions so that the
risk of serious injury exists.
•
Do not connect any loads that exceed the rated values of the safety outputs.
•
Wire the Flexi Classic system so that 24 V DC signals cannot contact the safety outputs.
•
Connect the GND wires of the power supply to earth so that the devices do not switch
on when the safety output line is applied to frame potential.
•
Use suitable components or devices that fulfil all the applicable regulations and
standards.
Actuators at the outputs can be wired single-channeled. In order to maintain the respective
Safety Integrity Level the lines have to be routed in such a manner that cross circuits to
other live signals can be excluded, for example by routing them within protected areas
such as in a control cabinet or in separate plastic-sheathed cables.
WARNING