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ifm
Device Manual SmartSPS AC14 with EtherNet/IP interface (AC1421, AC1422), Firmware 3.1.2
2015-11-30
Safety instructions
Tampering with the unit
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2.3
Tampering with the unit
11242
WARNING
Tampering with the units can affect the safety of operators and machinery!
Tampering with the units is not allowed.
In case of non-compliance our liability and warranty expire.
► Do not open the devices!
► Do not insert any objects into the devices!
► Prevent metal foreign bodies from penetrating!
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2.4
Start-up behaviour of the controller
6827
15233
11575
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.
