Honeywell Krom Schroder BCU 580 - UVD Control

BCU 580 · Edition 11.15l 107
Project planning information
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 out-
put of the UV sensor must be wired separately.
The 0 – 20 mA current output is not required for normal
operation. The 0 – 20 mA current output can only be
used to display the flame signal. If it is used for the dis-
play 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
121062
61
230V
1 2 3
4
L1
ϑ1
P70
ϑ2
P70
P70
P69
P73
P72
P72
HT
p
u
2
GZL
PZL
P71
4645 65 66 67 6849 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
I
0,6 × I
N
Luft
min
Luft
Permanent pilot burner (Parameter 79 = 1):
N
BCU 580..F1
µC
88
c
c
0 V+24 V
24V
DC
9 11
121062
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
4645 65 66 67 6849 50 51
52
5 6 7 8
17 18 37 38
max. 1 A;
24
V DC,
250 V AC
3,15AT
4241
43
13 14 15 57
V1
V2
V3
V4
A
53 54 55 56
mA
(P40 = 2/3) => 51
P
2
1
NL1
0 V
24 V
+ –
0–20 mA
UVD1
1
2
4
3
5
6