BFI Automation 3001D, Original Operating Instructions

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Technical data
3-4
3.6 Device design
The system slide-in module of the flame amplifier is based
on a signal processor circuit with fail-safe self-monitoring
system and has been approved for continous operation in
keeping with European standards EN 240 and 298 as well
as in conformity with TRD 411-414. Every failure of com-
ponent part will cause the safe switching-OFF of the flame
relay.
The flame scanner signal (see separate operating instruc-
tions of the flame scanner) reaches the sensitivity control-
lers in the form of a pulse telegram through a filter and
pulse shaper stage. Depending on the channel selected,
the requested pulse width is set. Subsequently the flame
signal is distributed to three different function channels.
1 Measurement channel (M)
2 Monitor channel (RM)
3 Evaluation channel (RF)