BCU 580 · Edition 11.15
56
10 .2 .2 Flame control
Parameter 04
Parameter 04 = 0: flame control is performed with an ioniza-
tion electrode.
Parameter 04 = 1: flame control is performed with a UV sensor
for intermittent operation (UVS).
Parameter 04 = 2: flame control is performed with a UV sensor
for continuous operation (UVD).
Parameter 04 = 3: burner 1 flame control is performed with
an ionization electrode. Burner 2 flame control is performed
with a UV sensor for intermittent operation (UVS).
Parameter 04 = 4: burner 1 flame control is performed with
an ionization electrode. Burner 2 flame control is performed
with a UV sensor for continuous operation (UVD).
Parameter 04 = 5: burner 1 flame control is performed with
a UV sensor for intermittent operation (UVS). Burner 2 flame
control is performed with an ionization electrode.
Parameter 04 = 6: burner 1 and burner 2 flame control is
performed with a UV sensor for intermittent operation (UVS)
on each burner.
Parameter 04 = 7: burner 1 flame control is performed with
a UV sensor for continuous operation (UVD). Burner 2 flame
control is performed with an ionization electrode.
Parameter 04 = 8: burner 1 flame control is performed with
a UV sensor for continuous operation (UVD). Burner 2 flame
control is performed with a UV sensor for intermittent opera-
tion (UVS).
UV sensor for intermittent operation
For intermittent operation, the operating state of the complete
system is limited to 24 h pursuant to EN 298. To meet the re-
quirement for intermittent operation, the burner is shut down
and restarted automatically after an operating time of 24 hours.
The restart does not meet the requirements of EN 298 for UV
sensor continuous operation because the required self-test
(at least once per hour) is not performed while the burner is
operating.
This shut-down and subsequent restart are performed in the
same way as a normal controlled shut-down. This process
is controlled independently by the BCU and therefore it must
be checked whether the industrial process permits the pause
in heat supply it creates.
UV sensor for continuous operation
The reaction times of the BCU and UV sensor for continuous
operation are coordinated so that the set safety time during
operation (parameter 19) is not extended.
Parameters > Flame control