Preparing the Gas Analysis System for Use
– Set switch on connector to ON/OFF.
– Plug connector back into Profibus module, tighten safety screws, close device door
5.2.4.2
Analogue outputs
The voltage supply for the analogue outputs takes place via the gas analysis system. A galvanic
separation of the potentials at the recipient's end is necessary. Signals are exchanged by default in
the range of 4...20 mA. The division of the value range for each measured quantity corresponds to
the measuring range of the respective sensor. Signals outside the range of values have the following
meaning:
– 0 mA = no signal
– 2 mA = Measured value incorrect
– 21 mA = Sensor overload
For information on the wiring of the analogue outputs in the terminal box please refer to the electric
diagram. If more than 8 measured values are transmitted, the outputs in the terminal box can be
allocated several times. The values are then transmitted alternately at intervals. The intervals are marked
with potential-free markers.
5.2.5
Information on Cable and Lines Routing
Please note the following for the on-site running of cables:
– Use shielded lines for all signals
– Implement shield on one side on-site
– Separate laying of data and power cables.
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