BCU 580 · Edition 11.15
101
12 .3 .3 UVD control
An additional voltage supply of 24 V DC is required to operate
the UV sensor for continuous operation UVD 1 in conjunction
with burner control unit BCU 580. The 24 V DC voltage supply
and the 0 – 20 mA current output of the UV sensor must be
wired separately.
The 0 – 20 mA current output is not required for normal opera-
tion. The 0 – 20 mA current output can only be used to display
the flame signal. If it is used for the display in a control room for
example, then the cable to the control room must be screened.
Alternating pilot burner (Parameter 79 = 0):
N
BCU 580..F1
µC
88
c
c
0 V
+24 V
24V
DC
9
11 12
10
62 61
230V
1
2
3
4
L1
ϑ1
P70
ϑ2
P70
P70
P69
P73
P72
P72
HT
p
u
2
GZL
PZL
P71
46
45
65
66
67
68
49
50
51
52
5 6 7 8
17
18
37
38
max. 1 A;
24 V DC,
250 V AC
3,15AT
42
41
43
13
14
15
57
V1
V2
V3
V4
A
53
54
55
56
mA
(P40 = 2/3) => 51
P
2
1
N
L1
0 V
24 V
+
–
0–20 mA
UVD1
1
2
4
3
5
6
Permanent pilot burner (Parameter 79 = 1):
N
BCU 580..F1
µC
88
c
c
0 V
+24 V
24V
DC
9
11 12
10
62 61
230V
1
2
3
4
L1
ϑ1
P70
ϑ2
P70
P70
P69
P73
P72
P72
HT
p
u
2
GZL
PZL
P71
0,6 × I
N
46
45
65
66
67
68
49
50
51
52
5 6 7 8
17
18
37
38
max. 1 A;
24 V DC,
250 V AC
3,15AT
42
41
43
13
14
15
57
V1
V2
V3
V4
A
53
54
55
56
mA
(P40 = 2/3) => 51
P
2
1
N
L1
0 V
24 V
+
–
0–20 mA
UVD1
1
2
4
3
5
6
Project planning information > Electrical connection