3
Installation
WARNING
Use only power units which guarantee reliable isolation of
the operating voltages as per IEC 742 / EN 60742 / VDE
0551 with at least 4 kV isolation resistance (protected extra
low voltage, PELV). Switch power packs are permitted if
they guarantee reliable isolation in accordance with EN
60950 / VDE 0805.
PLEASE NOTE
Connect the earthing connection of the rack with low impe-
dance to the earth potential (short cable with large cross-
sectional area).
Pin assignment of the sensor plug (SIGNALS, X31)
Cross-sectional area of connection max. 1.5 mm
2
1
2
3
LIM+: Positive end switch
REF: Reference switch
LIM-: Negative end switch
4
5
6
24 V supply
0 V supply
Earth connection
6
3
1
4
2
5
E
n
g
lis
h
SPC200-SMX-1
14
9903NH
