GB-12
D
GB
F
NL
I
E
Adjustment
In certain cases, it may be necessary to change the
parameters set at the factory. Using the separate
software package BCSoft and a PC opto-adapter, it
is possible to modify parameters on the BCU, such
as the pre-purge time or the behaviour in the event
of a flame failure.
▷
The software package and the opto-adapter
are available as accessories – see page 23
(Accessories).
▷
Changed parameters are saved on the integrated
parameter chip card.
▷
The factory settings are secured with a program-
mable password.
▷
If the password has been changed, the end cus-
tomer can look up the changed password in the
plant documentation or ask the system supplier.
Commissioning
▷
During operation, the 7-segment display shows
the program status:
00
Start-up position/standby
H0
Delay
A
Approaching minimum capacity
0
Fan OFF check
01
Fan run-up time
A
Approaching maximum capacity
1
Post-purge time air monitoring
P1
Pre-purge
A
Approaching ignition capacity
Valve check
03
Pre-ignition time tVZ
04
Safety time 1 t
SA1
05
Flame proving period 1 t
FS1
06
Safety time 2 t
SA2
07
Flame proving period 2 t
FS2
H8
Delay
08
Operation/controller enable
09
Over-run t
N
with air actuator in position for
maximum capacity
P9
Post-purge
C1
Controlled air flow
––
Device Off
U I
Remote control (with OCU)
Data transfer (programming mode)
0
.
0
.
(blinking dots) Manual mode
WARNING
Risk of explosion! Check the system for tightness
before commissioning.
Do not start the BCU until you are certain that the
wiring is correct, the parameters have been set
correctly and all input and output signals are be-
ing processed perfectly by means of conducting
a function check and reading the parameters on
the device.
Switch on the system.
▷
The display indicates
––
.
Switch on the BCU by pressing the On/Off but-
ton.
▷
The display indicates
00
.
▷
If the display blinks (fault), reset the BCU by
pressing the Reset/Information button.
Apply the start-up signal to terminal 1.
▷
The display indicates
A
. The air control valve
moves to the position for minimum capacity.
▷
The display indicates
H0
. The switch-on delay
time (parameter P63) is active.
▷
The display indicates
01
. The fan run-up time
(parameter P30) is active.
▷
The display indicates
A
. The air control valve
moves to the position for maximum capacity.
▷
The display indicates
P1
. The pre-purge time
(parameter P34) is active.
▷
BCU..C1: the valve check runs in parallel to
pre-purge. If the valve check lasts longer than
pre-purge, the display indicates
.
▷
The display indicates
A
. The air control valve
moves to the position for ignition capacity.
▷
The display indicates
03
,
04
and
05
. When us-
ing a pilot and main burner,
06
and
07
are also
shown. Pre-ignition time, safety time and flame
proving period are running.
▷
The display indicates
H8
. The controller enable
signal delay time is running.
▷
The display indicates
08
. The burner is in opera-
tion and the controller enable signal has been
issued.
Manual mode
▷
For adjustment of the burner control unit or for
fault-finding.
▷
In Manual mode, the BCU operates indepen-
dently of the status of the inputs for start-up
signal (terminal 1), controlled air flow (terminal 2)
and remote reset (terminal 3). The function of the
controller enable/emergency stop input (termi-
nal 46) is retained.
▷
Manual mode is terminated by switching off the
BCU or in the event of a power failure.
▷
Parameter 67 = 0: Manual mode unlimited in
time. The burner control unit may continue to
be operated manually in the event of failure of
the control system or the bus.
▷
Parameter 67 = 1: The BCU will terminate Man-
ual mode 5 minutes after the last time the Reset/
Information button is pressed. It switches to the
start-up position/standby (display
00
).
Switch on the BCU while holding the Reset/
Information button. Hold the Reset/Information
button until the two dots in the display start to
blink.
