Safety
Operating Manual PNOZ ms2p TTL
1001722-EN-03
9
3
Safety
3.1
Intended use
The expansion module monitors standstill, speed and direction of rotation in accordance
with EN ISO 13849-1 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 PNOZmulti system
(please refer to the document "PNOZmulti System Expansion" for details of the base units
that can be connected).
The configurable small control systems PNOZmulti are used for the safety-related interrup-
tion of safety circuits and are designed for use in:
}
E-STOP equipment
}
Safety circuits in accordance with VDE 0113 Part 1 and EN 60204-1
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 single-channel 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").