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T-Product · BCU 465 · 2006 April
Factory Options and Field Programmable Options
Reading the Parameters
Parameter setting
Description
Para-
meter
Value range
Factory
setting
Field
program-
able*
Flame signal
01
0 – 30 µA
Program status on last fault
03
x0 – x8
Switch-off threshold of flame amplifier
04
1 – 20 µA
1 µA
POC Control Input
09
0 = No; 1 = Yes
**
Restart attempt
12
0 = No; 1 = Yes
0
Flame failure response time
14
1; 2 s
1 s
Self-Check in Start-up/Stand-by position
15
0 = in Start-up;
1 = in Stand-by
1
Minimum On Time
20
up to 25 s (minimum
Safety period at start-up)
0
Minimum Off Time
21
2 – 25 seconds
2
Safety period on start-up t
SA
22
3; 5; 10 s
**
Flame proving period t
FS
23
0 – 25 s
0 s
Air valve control
30
0 = only externally
1 = simultaneously to V1
2 = simultaneously to V2
0
Air valve on start-up can be activated externally
31
0 = No; 1 = Yes
0
External air valve control possible during fault lock-out
32
0 = No; 1 = Yes
1
Digital input as 1400 °F auto igition flame management
bypass
33
2 = with shutdown when
bypass has ended;
3 = continue operation
immediately
**
Manual operation limited to 5 minutes or w/o limit
34
0 = w/o limit;
1 = limit 5 minutes
1
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