FCU 500, FCU 505 · Edition 02.17
93
Parameters
IC 20 . .E
1
2
3
46
47
48
49
50
4
67
44
52
45
51
65
66
68
41
42
16
17
18
57
13
14
15
53
54
55
56
58
62 61
5 6 7 8
11 12
FCU 500..F1
5AT
3,15AT
µC
24V
DC
88
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
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 signal is received that the position has been
reached within the timeout time of 255 s, a fault lock-
out of the FCU will be performed and a fault message
(
A
,
A
or
A
) will be displayed, see page 70 (Fault sig-
Control range between the positions for minimum
and maximum capacity
0°
90°
S4
S1
S3
Burner control range
Butterfly valve setting range
Control range
Move to ignition position
Ignition pos.
Min.
pos.
Closed
pos.
Max. pos.
MIN
MIN
MIN
MAX
MAX
MAX
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 using its analogue input (terminals 17
and 18). There is no timeout active in this case.
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.
▼
