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02/16 MN05013001Z EN
6
Safety function blocks
easySafety allows the processing of safety-related tasks in
the safety circuit diagram. However, you should use the
standard circuit diagram for standard control tasks.
You can implement safety functions using the safety function
blocks. In this way, you can fully ensure the safety features
of the device. easySafety also monitors the connected
peripherals.
Rules in the safety circuit
diagram
External sensors and operating elements (such as Emer-
gency-stop buttons) can be assigned to safety function
blocks in the safety circuit diagram. This must be carried out
observing the following rules:
The figure shows a 2-channel emergency-stop button that is
connected with inputs IS1 and IS2 of the device. These two
inputs must be assigned to the appropriate safety function
blocks. In this case, the ES (ES = emergency-stop) is used.
The assignment is carried out in the safety circuit diagram.
The ES safety function block monitors and evaluates the
external emergency-stop button. If this is actuated, the
output of the safety function block is switched off. The func-
tion block output (in our example ES01QS) switches off the
device outputs of the easySafety.
The figure on the left shows a negative example. The 2-
channel emergency-stop button here is not evaluated by one
safety function block but assigned directly to the two device
outputs. This is not allowed!
IS01--------
Ä
ES01I1
IS02--------
Ä
ES01I2
IS01--------
Ä
ES01I1
IS02--------
Ä
ES01I2
ES01QS-----
uÄ
QS1
hÄ
QS2
IS01--IS02----
uÄ
QS1
hÄ
QS2
Содержание easySafety
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