Supplementary data
Operating Manual PNOZ m EF 1MM
1003108-EN-11
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9.1.4
Safety-related characteristic data for operation with non-safety-related
encoder with mechanical fault exclusion
In accordance with EN 61800-5-2: 2007, Table D.16 (Motion and position feedback
sensors), fault exclusions are permitted for faults in the mechanical connection between the
sensor and motor.
9.1.4.1
Permitted sensor types and output signals
Permitted encoder types:
}
Rotary non-safety-related encoders
Permitted output signals:
}
Sin/Cos output signals 1Vss, reference voltage
}
Sin/Cos output signals 1Vss, differential
NOTICE
The signal tracks Cos and Sin must be generated independently. This
means that the sine and cosine signals in the encoder must be conducted in
independent channels, from the optics to the interface.
The two signal tracks must not be generated by a common processor.
One signal may not be derived from the other signal via an electronic circuit.
9.1.4.2
Safety-related architecture
SRP/CS
Sensor
Sensor
non-safe encoder
Logic
+
Diagnostic
Actuator
PNOZ m EF 1MM
SRP/CS
Logic
SRP/CS
Logic
To calculate the safety function you will need the following data for the "sensor" subsystem
and the subsystem "PNOZ m EF 1MM":
Sensor
Subsystem PNOZ m EF 1MM
Category
MTTFd
DC
Operating mode
PFH (1/h)
2
Manufacturer-
specific
90 %
Monitoring
1 sensor
1,83E-08
The values for
DC
refer to the standard EN 61508.
