Pilz PNOZ s50 C - Manual (Page 19)

Function description
Operating Manual PNOZ s50
1002194­EN­02 19
4.2.4 Feedback loop Y1, Y2
The operating state of the inductive load can be uploaded, for example, via
} Micro switches
} Proximity switches
} Hall sensors
NOTICE
The device may only be operated if the feedback loops Y1 and Y2 evaluate
the switch state of the connected equipment. The feedback loops must be
monitored continuously from the moment the ventilation time elapses until
the output shuts down. The device may not be operated unless the feed­
back loops are connected.
Equipment with a reaction time of < 3 ms cannot be used. The device
switches to the "I/O Fault" state.
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 switch­on 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.