PSEN ma1.3a/b-20
Operating Manual PSEN ma1.3a/b-20
21705-EN-11
| 10
Negative vertical offset, not permitted
[1]
[2]
[3]
[4]
[1]
Fig.: Safety switch and square actuator - side view
Legend
[1] Sensing face PSEN ma1.3-12
[2] Positive vertical offset, permitted
[3] Negative vertical offset, not permitted
[4] Safety switch
Wiring
}
Information given in the
}
Calculation of the max. cable length l
max
:
R
lmax
- R
i
R
l
/ km
I
max
=
R
lmax
= Max. overall cable resistance (see evaluation device's technical details)
Ri = Internal resistance sensor (see
)
R
l
/ km = Cable resistance/km of the cable (see technical details cable)
}
Ensure the wiring and EMC requirements of EN 60204-1 are met.
}
In the following cases, check the function that detects shorts across contacts prior to
commissioning:
– On evaluation devices with DC supply voltage: Overall cable resistance ≥ 15 Ohms
per channel
– On evaluation devices with AC supply voltage: Overall cable resistance ≥ 25 Ohms
per channel
– For details of how to perform the test for shorts across the contacts, please refer to
the operating manual for the relevant evaluation device.
