Supplementary data
9.1.3.2
Safety-related architecture
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
Category
1*
*In accordance with EN ISO 13849-1, Category 1 is only met if the sensor is a "well-tried
component".
The values for DC refer to the standard EN 61508.
9.1.3.3
Achievable safety level
Monitoring
function
SOS-M
SSR-M
SDI-M
SSM
SS1-M
SS2-M
Position counter value
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
Operating Manual PSSu K F EI CV(-T)
1004290-EN-04
MTTFd
DC
Manufacturer-
0 %
specific
PL of EN ISO 13849-1: 2015
PL c (Cat.1)
Subsystem PSSu K F EI CV(-T)
Operating mode
Monitoring
1 sensor
SIL CL in accordance with
EN IEC 62061
-
PFH (1/h)
1,80E-08
64