BFI Automation 3001D, Original Operating Instructions

Page: 35 / 49

Description
5-3
5.1.2 Monitor channel (RM)
The monitor channel processes the flame signal of the
flame scanner. It comprises all periodic self-tests of the
system required for continuous operation. In case of a
failure of the flame monitoring system, the control logic
responds immediately and the monitor channel RM
switches-OFF. In case of a flame and system failure, the
burner operation is interrupted within the safety switch-
OFF time set (S4 / S5). The operating condition is indi-
cated by the RM LED. The RM monitor channel has to be
switched on for burner operation.
5.1.3 Evaluation channel (RF)
The evaluation channel processes the flame signal of the
flame scanner. The switch-OFF times are selected by the
DIP switches (S2 / S3). Moreover, the evaluation channel
monitor the switch-ON threshold (cf. also chapter 5.1.4).
The operating condition is indicated by the RF LED. The
RF evaluation channel has to be switched on for burner
operation.
The flame relay K101 is energized on only, if RM and RF
are switched on at the same time.
When the burner is started, the RM and RF channels may
respond at different times.
When the burner is stopped, the RM and RF channels
may respond at different times. The safety switch-OFF
times for operation must not be exceeded.