Datasheet

Relays for functional safety
Safety relays PNOZsigma
PNOZ s9
Pilz GmbH & Co. KG, Felix-Wankel-Straße 2, 73760 Ostfildern, Germany
Telephone: [phone], Telefax: [phone], E-Mail: [e-mail]
2016-09
754
} 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.
with PNOZsigma base unit:
} Dual-channel operation via PNOZsigma connector
with other base units or without base unit:
} Single-channel operation: one input circuit affects the output relays
Timing diagrams
Delay-on de-energisation, not retriggerable
POWER
Input
Reset
Output safe
Output aux.
[1] [2]
Legend
} POWER: Supply voltage
} Input: Input circuit
} Output safe: Safety contacts
} Output aux: Auxiliary contact
} Reset: Feedback loop input
} t
1
: Switch-on delay
} t
v
: Delay time
} [1]: Delay-on de-energisation with the time t
v
} [2]: No retriggering in the time t
v