Pilz PNOZ s50 C - Manual (Page 21)

Function description
Operating Manual PNOZ s50
1002194­EN­02 21
Please note the fixed allocation of test pulses to the following inputs:
} T0 pulses the feedback loop Y1
} T1 pulses the feedback loop Y2
The test pulse outputs T0/T1 are switched on (24 V) in
} "RUN" operating status.
} "I/O Fault" operating status (fault on inputs and outputs).
The test pulse outputs T0/T1 are switched off (0 V) in
} "Fault" operating status (internal fault).
The test pulses can be switched on and off via the display.
} The default setting is for test pulses to be switched on.
} Test pulses will not be active in the event of a fault (I/O Fault and Fault).
NOTICE
The test pulses can only be activated simultaneously for both feedback
loops Y1 and Y2.
4.2.6 Signal and status outputs O3, O4, O5
Single­pole failsafe semiconductor outputs signal the operating status of the load and indic­
ate a fault.
NOTICE
The fault signal output O3 must be evaluated together with status outputs
O4 (if O1+/O1­ is used) and O5 (if O2+/O2­ is used), if this is demanded by
the plant/machine's safety requirements. Processing of these signals is
used to check the feasibility of the signal states. Evaluation of these signals
must be suitable to achieve a safe condition for the application.
Fault signal output O3
1 No fault, LED "I/O Fault" and "Fault" is off
0 Fault, LED "I/O Fault" or "Fault" is lit
Status outputs
They signal the status of the
load only after the ventilation
or application time has
elapsed.
O4
1 Load at O1+/O1­ ventilated
0 Load at O1+/O1­ applied
O5
1 Load at O2+/O2­ ventilated
0 Load at O2+/O2­ applied