Supplementary data
Operating Manual PSSu K F EI CV(-T)
1004290-EN-04
72
At the very latest, a feasibility error will be detected when a tolerance expires. The toler-
ance level depends on the ratio of the frequency at tracks AB "
f
AB
" to the frequency at track
Z "
f
Z
" in your configuration (
fAB/fZ Verh.
setting in the menu) and is calculated as follows:
}
when
fAB/fZ Verh.
≥ 1.0
7.5 Z-pulses or 7.5
x
(f
AB
/f
Z
) AB-pulses
}
when
fAB/fZ Verh.
< 1.0
4.5 AB-pulses or
4.5/(f
AB
/f
Z
)
Z-pulses
9.1.9
Safety-related characteristic data for operation with 2 proximity
switches
9.1.9.1
Permitted sensor types and output signals
Non-safety-related sensor
Permitted output circuits:
}
pnp
}
npn
9.1.9.2
Safety-related architecture
SRP/CS
Sensor
Sensor
proximity switch
Logic
+
Diagnostic
Actuator
PSSu K F EI CV
SRP/CS
Logic
SRP/CS
Logic
Sensor
proximity switch
To calculate the safety function you will need the following data for the "sensor" subsystem
and the subsystem "PSSu K F EI CV(-T)":
Sensor
Subsystem PSSu K F EI CV(-T)
Category
MTTFd
DC
Operating mode
PFH (1/h)
4
Manufacturer-
specific
90 %
Monitoring
2 sensors
1,01E-09
In a worst case scenario, the sensor subsystem's characteristic value MTTFd is calculated
from the inferior (lower) value of the two sensors.
