Datasheet

Relays for functional safety
Safety relays PNOZsigma
PNOZ s50
Pilz GmbH & Co. KG, Felix-Wankel-Straße 2, 73760 Ostfildern, Germany
Telephone: [phone], Telefax: [phone], E-Mail: [e-mail]
2016-09
900
Y10/Y11
Y20/Y21
t
S35
S36
t
O1+/O1-
O2+/O2-
t
Fast Slow
t
1
t
2
Fast
Slow
t
3
t
4
Fig.: Conditions for fast and slow shutdown
Legend:
} Fast: Fast shutdown
} Slow: Slow shutdown
} t
1
:and t
3
Switch-on: Y10, Y11, S35 = 1, O1+/O1- switches on; Y20, Y21, S36 = 1, O2+/
O2- switches on
} t
2
: Fast shutdown via 1/0 pulse edge from Y10/Y11 or Y20/Y21
} t
4
: Slow shutdown via 1/0 pulse edge from S35 or S36
Feedback loop Y1, Y2
The operating state of the inductive load can be uploaded, for example, via
} Micro switches
} Proximity switches
} Hall sensors
The feedback loop can be configured for N/C or N/O contacts.
The 24V voltage outputs S11 of the PNOZ s50 can be used to provide the 24 V DC supply
to the equipment in the feedback loop. This is only permitted if test pulses are not used.
Otherwise a wiring error will be registered.
The feedback loop will only be evaluated after a max. ventilation and application time,
which is to be configured. Contact bounce during application or ventilation of the equipment
is ignored.
} Max. ventilation time: Period within which the load must be ventilated once the power
circuit is switched on.
} Max. application time: Period within which the load must be applied once the power cir-
cuit is switched off.
The max. ventilation and application time, plus the switch-on behaviour (N/C / N/O) are
configured via the display. The max. application time is configured separately for slow and
fast shutdown. The max. ventilation time is configured jointly for slow and fast shutdown.