Safety - Pilz PNOZ ms1p Operating Manual

Safety

3 Safety
3.1 Intended use
The expansion module monitors standstill, speed and direction of rotation in accordance
with EN ISO 13849­1 up to PL e and EN IEC 62061 up to SIL CL 3.
The expansion module may only be connected to a base unit from the configurable control
system PNOZmulti (please refer to the document "PNOZmulti System Expansion" for de­
tails of the base units that can be connected)
The configurable control system PNOZmulti is used for the safety­related interruption of
safety circuits and is designed for use in:
}
E­STOP equipment
} Safety circuits in accordance with VDE 0113 Part 1 and EN 60204­1
Operating Manual PNOZ ms1p
20967­EN­11
WARNING!
Users must take appropriate measures to detect or exclude errors (e.g. slip­
page or broken shearpin) which cause the frequency of the encoder signal
to no longer be proportional to the monitored speed.
Appropriate measures are:
– Using the monitored encoder to also control the drive
– Mechanical solutions
– Monitoring for broken shearpin by means of the speed monitor
WARNING!
A single­channel open circuit/input device error is recognised and leads to a
safe condition of the outputs at the relevant axis.
For applications in accordance with PL e and SIL CL 3, the "Overspeed"
output must be integrated into the safety function in every operating mode
and evaluated so that a shutdown occurs if the output switches to a safe
condition ("Overspeed" output = "0").
9