PNOZ s9
Operating Manual PNOZ s9
21401-EN-10
9
Block diagram/terminal configuration
Fig.: Centre: Front view with cover, right: Front view without cover
*Safe separation from non-marked area in accordance with EN 60947-1, 6 kV, basic insula-
tion between all safety contacts.
Function description
} Delay-on de-energisation, not retriggerable
If the supply voltage at the input circuit is interrupted, the safety contacts will open once
the set release time has elapsed, even if the safety function is cancelled during the
delay time. The unit cannot be reactivated until the delay time has elapsed.
} Delay-on de-energisation, retriggerable
(only possible as a standalone application or with the PNOZsigma base unit!)
If the supply voltage at the input circuit is interrupted, the safety contacts will open once
the set release time has elapsed.
If the safety function is cancelled during the delay time (e.g. safety gate closed), the unit
will remain active.
} Pulse on switching on
The safety contacts close when supply voltage is applied, the feedback loop is closed
and finally the input circuit is closed. The safety contacts are reopened once the pulse
time has elapsed.
If the input circuit is opened for more than 10 ms during the pulse time, the safety con-
tacts will open immediately and the auxiliary contact will be closed.
} Delay-on energisation
The set delay time is started when supply voltage is applied, the feedback loop is
closed and finally the input circuit is closed.
If the input circuit and feedback loop are closed once the delay time has elapsed, the
safety contacts will close and the auxiliary contact will be opened.
If the input circuit is opened for more than 10 ms, the safety contacts will open immedi-
ately and the auxiliary contact will be closed.
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