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Device Manual AS-i IO-Link-Gateway (AC5225) Firmware V1.16
2017-11-20
Safety instructions
What previous knowledge is required?
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2.2
What previous knowledge is required?
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This document is intended for people with knowledge of control technology and PLC programming
with IEC 61131-3.
To program the PLC, the people should also be familiar with the CODESYS software.
The document is intended for specialists. These specialists are people who are qualified by their
training and their experience to see risks and to avoid possible hazards that may be caused during
operation or maintenance of a product. The document contains information about the correct handling
of the product.
Read this document before use to familiarise yourself with operating conditions, installation and
operation. Keep the document during the entire duration of use of the device.
Adhere to the safety instructions.
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2.3
Start-up behaviour of the controller
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WARNING
Danger due to unintentional and dangerous start of machine or plant sections!
► When creating the program, the programmer must ensure that no unintentional and dangerous
start of machines or plant sections after a fault (e.g. e-stop) and the following fault elimination can
occur!
Realise restart inhibit.
► In case of an error, set the outputs concerned to FALSE in the program!
A restart can, for example, be caused by:
• voltage restoration after power failure
• reset after watchdog response because of too long a cycle time
• error elimination after an E-stop
To ensure a safe behaviour of the controller:
► Monitor the voltage supply in the application program.
► In case of an error switch off all relevant outputs in the application program.
► Monitor actuators which can cause hazardous movements in the application program (feedback).
► Monitor relay contacts which can cause hazardous movements in the application program
(feedback).
► If necessary, ensure that welded relay contacts in the application project cannot trigger or continue
hazardous movements.
Summary of Contents for AC5225
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