Chapter 3 Operating Instructions
UE402
16 © SICK AG • Industrial Safety Systems • Germany • All rights reserved 8009874/YT67/2016-02-22
Subject to change without notice
Product description
Releasing the PSDI control
You can release the PSDI control in two different ways:
Limited: The safety light curtain only evaluates interruptions within the stopping phase
as a PSDI, i.e. if the machine cycle contact was made for the top dead centre (MCC>TDC)
and has also fallen away again.
Not limited: The safety light curtain also evaluates interruptions within the upward and
stopping phases as PSDIs if the machine cycle contact is made for the top dead centre
(MCC>TDC) and has not yet fallen away again. This configuration makes higher clock
speeds possible.
Limit the release of the PSDI control if the machine does not automatically stop at
the top dead centre!
If you wish to set the release of the PSDI control to Not limited, then you must make
sure at the machine side that the machine stops automatically at the top dead centre.
For this you must always observe the standards that apply for your specific applica-
tion/machine situation.
Device symbol C4000 Host (receiver), context menu Configuration draft, Edit, selection
of the operating mode, file card General, option Enable PSDI control.
Run-on monitoring
The purpose of run-on monitoring is to detect any failure of the machine brake at the top
dead centre. If you activate run-on monitoring, the UE402 in front of the stroke release
monitors whether the SCC is still closed, i.e. whether the machine has actually stopped at
the top dead centre.
If the press exceeds the SCC before the operator has intervened once or twice depending
on the PSDI mode, the C4000 switches to lock>out.
The SCC contact must be connected for run-on monitoring.
Device symbol C4000 Host (receiver), context menu Configuration draft, Edit, selection
of the operating mode, file card General, option Run-on monitoring active.
WARNING
Note
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