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Unformatted text preview: 50 044
This standard covers all inductive proximity sensors to standards EN 50 008,
EN 50 025, EN 50 026, EN 50 036, EN 50 037, EN 50 038 and EN 50 040.
The standard differentiates between polarised and non-polarised proximity sensors.
In the case of non-polarised proximity sensors with two connecting wires for DC or
AC operation, the wires can be any colour except green/yellow. © Festo Didactic GmbH & Co. KG • FP 1110 217 14. Standards and protection classes In the case of polarised proximity sensors for direct current and two connecting
wires, the connecting wire for the positive terminal must be brown and blue for the
Where proximity sensors have three or four connecting wires, the wires must be
identified as follows Operating voltage Positive terminal
Negative terminal Load output for three connecting wires
for four connecting wires Brown
White independent of function;
for the normally open contact function,
for normally closed contact operation. 1...
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