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1 General Infomation
The FMS constantly monitors its own functions and these of the control elements connected.
Each analogue input (control variable and feedback or correction) is freely configurable via
plug-in cards.
Alternatively:
– potentiometer (1 - 5kΩ)
– step input (DPS)
– current signal 0/4 ... 20 mA
– Namur transmitter as a two-wire system
– inductive sensor with switch terminals in three-wire system
–PT 100
The unit is of fail-safe construction.
The FMS contains a burner control unit with process control program.
Outputs:
– actuation of gas valves
– actuation of oil valves
– actuation of the ignition valve and ignition transformer
– fan release
– oil pre-heating
– fault signal
– signal outputs for oil and gas operation (in the off condition, oil operation is always indicat-
ed)
The external signals to the control unit are via floating contacts or chains of contacts.
The following signals can be pre-set:
– 3 separate safety interlock chains
– fault unlocking
– air pressure monitor
– gas pressure monitor (min.)
– flame signal (pilot flame monitor and ignition flame monitor)
– pre-ventilation and ignition release
– pre-ventilation suppression
– control release
– re-circulation release
– burner on
– fuel selection
This software option makes it possible to calculate the burner's required load setting continu-
ously for a specified target value (referred e.g. to temperature or pressure), through compari-
son with the actual value. This load setting can be notified internally to the electronic
compound as the specified value.
This software function makes it possible to regulate one or several actuators independently of
a switched-on O
2
actual value. By using a self-optimizing regulator strategy, it is also possible
to regulate burners with frequent load changes.
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