Function description
Operating Manual PIT m4SEU
1004648-EN-02
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5.4
Operating mode interface
The operating mode interface consists of the monitored outputs MSO1 … MSO5 (see
diagram [
). The designation "MSO" stands for "mode of safe operation". Outputs are
assigned inputs, which can be used to select an operating mode if they have the relevant
permission (transponder key):
Input
Output
Operating mode
I1
MSO1
OM1
The operating mode OM1/OM5 is selected
based on the operating time of input 1 (see
Monitoring of operating time [
)
MSO5
OM5
I2
MSO2
OM2
I3
MSO3
OM3
I4
MSO4
OM4
5.4.1
Switching behaviour after permission is removed
If permission is removed after changing to a different operating mode, it is possible to con-
figure the subsequent switching behaviour of MSO1 … MSO5. A DIP switch is available for
).
The individual switch settings and the resulting switching behaviour are described in the
chapter entitled
.
5.4.2
Control program requirements
In order to achieve SIL CL 2 (EN IEC 62061)/PL d (EN ISO 13849-1) in an application, the
evaluation must be carried out by a safety-related function block. The safety-related func-
tion block must meet the following requirements:
}
The function block must enable safe "1oon" evaluation of the output signals at MSO1 ...
MSO5.
}
If two or more operating modes are present at the same time, this must be detected as an
error.
INFORMATION
At the moment the device is switched on and during the switchover time t1,
the function block must bridge a "0" signal at all outputs on the operating
).
If a Pilz safety controller (e.g. PNOZ m1p) is used in conjunction with an
"operating mode selector switch" function element, then this requirement is
met automatically.
