Dräger Polytron 7000 Instructions For Use Manual page 21

5.3 Alarm devices (only with relay module)
If alarm devices are to be operated, the electrical connection of the docking station
must be in 3-wire technology (see assembly instructions Dräger Docking Station for
Polytron
5.3.1 Information about connecting
Three potential-free relay outputs are available at the relay module:
– alarm relay A1 (pre-alarm)
– alarm relay A2 (main alarm)
– fault relay (fault signal)
Pin-out of the relay plug
1 normally closed
2 common
3 normally open
4 not connected
5.3.2 Connecting alarm devices
WARNING
Risk of electric shock
Potential differences can lead to insulation faults.
► Do not combine electrical loads with different voltage types (AC or DC).
► If DC loads are used, make sure that only devices with identical rated DC
voltages are controlled via the relay contacts (e.g. ≤ 120 V).
► If AC loads are used, make sure that only the relay contacts are only connected
to devices with which they share one phase.
WARNING
Risk of electric shock
Improper use can lead to personal injury.
► Before plugging in or unplugging the relay plug, disconnect alarm devices from
the power supply.
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3000/7000).
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Dräger Polytron 7000
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Installation & commissioning