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6 Electrical connection
The electrical connection of the FMG90 is via the 4-pin plug M12x1 at the top.
The corresponding connection cables with moulded coupling socket are available in various
lengths.
CAUTION! Electric current!
The electrical connection should only be carried out by a fully qualified electrician.
ª De-energize the electrical system before connecting the FMG90.
Connection and wiring:
ª Screw the coupling socket of the connection cable to the plug of the FMG90.
ª Tighten the knurled nut of the coupling socket with a maximum torque of 1 Nm.
ª Connect the connection cables according to the following wiring diagrams.
Pin assignment:
Pin 1: +U
B
Pin 3: GND
Pin 2 / 4: Frequency output NPN/PNP
Pin configuration with
NPN frequency output:
PNP frequency output:
Pull-up- / pull-down-resistors R.
We recommend using resistors of ~1 kΩ (12V) respectively ~2,2 kΩ (24V) and 0.25 W for
the pull-up / pull-down wiring.
Please note that the maximum signal current of 25 mA will not be exceeded.