Falcon MJ M-Bus Operating instructions
Manipulation alarm
Is activated when a magnetic manipulation attempt was detected. It is also
activated in combination with the removal alarm. A date and time is stored
for the first occurred alarm event.
Backward flow alarm
is activated when more than 3 litres continuous backflow are measured.
The date and time is stored for the first backflow event.
Low battery alarm
Is activated when the remaining lifetime of the battery is lower than
app. 13 months.
3.4.3 Pulse settings
Those two values reconfigure the compensated pulse output signal (wires White and brown)
White wire Pulse (+)
Brown wire Ground (-)
Max contact load: 30 V DC / 30mA
Default setting for pulse output: 1 litre per pulse; 100ms pulse width
For the pulse output an open drain is used. The polarity must be observed.
The pulse output is compatible to the most systems that were used with a Reed-switch before
Specifies the pulse output resolution in litres per pulses. All full
values between 1 and 1000 liters are possible.
Dosing applications: For special dosing applications, you can enter
the value 9999. This value will give a pulse output of 2,5 litres per
pulse!
The pulse width can be set between 50 and 500 ms. The setting of
pulse incr. and pulse width must be plausible, depending on the
meter size and max flow rate values.
Example: For a Q3 10; DN25 meter with a Q4 value of 12,5 m³/h
12,5m³/h app. 3,5 l/s
Pulse output 1 litre max. possible pulse width 140 ms (smaller
values are possible)
If a pulse overcount would happen, the pulser stores the pulses and
sends them to the output when the flow rate decreases again. The
internal storage for this pulse counter is 65.535 pulses.
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