Pilz PNOZ s50 C - Manual (Page 20)

Function description
Operating Manual PNOZ s50
1002194­EN­02 20
Tover
U
B1B2
U
Avg
S35, S36
Y10, Y11
Y20, Y21
01+, 02+
t
t
Y1, Y2
t
Ton Toff
ton toff
O4, O5
t
Fig.: Ventilation and application time
Legend:
} Y10, Y11, Y20, Y21: Safe inputs to switch the outputs O1+/O1­, O2+/O2­
} O1+, O2+: Safe outputs, power circuit 1 and 2
} U
B1B2
: Supply voltage to the power circuits
} t
on
: Switch on power circuit
} t
over
: Configured overexcitation time
} t
off
: Switch off power circuit
} U
Avg
: Configured reduced voltage (arithmetic mean of the voltage at the outputs once
the overexcitation time has elapsed)
} Y1, Y2: Feedback loops
} T
on
: Configured duration of max. ventilation time
} T
off
: Configured duration of max. application time
} O4, O5: Failsafe outputs for status of the load, change in state after T
on
and T
off
have
elapsed
4.2.5 Test pulse outputs T0, T1
Feedback loops Y1 and Y2 can be assigned test pulses. The PNOZ s50 has 2 test pulse
outputs, T0 and T1.
INFORMATION
The feedback loop can only use test pulses if mechanical switches are used
to feed back the switch status.