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BCU 580 · Edition 11.15l
77
Parameters
IC 20 . .E
20 19 18
3 2 1
6
7
4
8
12 11
S3
S4
S1 0
OUT
0°
➔
90°
0°
90°
90°
➔
0°
IC 20..E
S1
S2
5
17 +
+
IN
OK
R
R
PE
A
D
A
D
R
1 2 3 4 5 6
ON
µC
13
15
16
M
PE
L1
N
S1
Min
Max
53
54
55
56
52
1
2
3
46
45
65
66
67
68
49
50
51
17
18
37
38
13
14
15
BCU 580..F1
3,15AT
µC
88
c
c
41
42
24V
DC
5 6
9
11 12
10
7
62 61
The positions for minimum capacity, maximum capac-
ity and ignition capacity can be set using the actuator.
When the appropriate position has been reached, this
information is signalled back via terminal 52. If no sig-
nal is received that the position has been reached with-
in the timeout time of 255 s, a safety shut-down of the
BCU will be performed and a fault message (
A
,
A
or
A
) will be displayed, see page 51 (Fault signalling). In
addition, the actuator will be moved to the set position
for minimum capacity using the output at terminal 54.
The control system is enabled during operation via the
controller enable output (terminal 56). During the con-
troller enable procedure, the actuator can be adjusted
infinitely between the positions for maximum and mini-
mum capacity by a controller (0(4) – 20 mA, 0 – 10 V)
using the setpoint device on terminals 17 and 18 or the
bus signal. There is no timeout active in this case.
If bus control is active (parameter 75), the controller en-
able output (terminal 56) has a different function. The
wiring between the BCU and the 3-point step controller
can be adjusted so that the control range of the actua-
tor is between the positions for maximum and ignition
capacity.
53
54
55
56
52
1
2
3
46
45
65
66
67
68
49
50
51
17
18
37
38
13
14
15
BCU 580..F1
3,15AT
µC
88
c
c
41
42
24V
DC
5 6
9
11 12
10
7
62 61
PE
L1
N
3 2 1
16
6
7
4
8
12 11
15
13
S3
S4
S11
S10
0°
90°
M
IC 20
PE
S1
S2
90°
➔
0°
0°
➔
90°
S1
Min
Max
3PS
Manual mode
In Manual mode, the actuator can be moved between
the positions for maximum and minimum capacity in
3-point step operation. No timeout is active when ap-
proaching these positions. The controller enable output
(terminal 56) is not active and not checked.
▼