BCU 440 · Edition 01.17 13
Parameters
4 Parameters
Description Parameter Value range Factory default setting Adjustable*
Burner flame signal 01
0–99 µA
Program status when the most recent fault occurred 03 x0–x8
Switch-off threshold of the flame amplifier 04
1–20 µA 1 µA
Fault lock-out or restart 12 0; 1 0
Safety time during operation t
SB
14 1; 2 s 1 s
Safety time on start-up t
SA
22 3; 5; 10 s
* Adjustable using BCSoft software and a PC opto-adapter.
0 = Function inactive
1 = Function active
On parameterisation, ensure that the program se-
quence started matches the application. This param-
eter may be set in this way only if the burner can restart
as intended in all operating phases.
4.1 Scanning the parameters
During operation, the 7-segment display shows the pro-
gram status, see page 12 (Program status and fault
messages)
The flame signal and all following parameters of the
BCU can be scanned one after the other by repeatedly
pressing the Reset/Information button (for 2 s).
In the event of a fault, the BCU halts the program run,
the display blinks and it then displays the cause of the
fault in coded form.
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