BCU 580 · Edition 11.15l
81
Parameters
RBW
Parameter 40 = 3: with RBW.
The actuator can be moved to the positions for maxi-
mum capacity (contact COM to HI) and minimum ca-
pacity (contact COM to LO) using the interface and by
closing the various contacts.
N
M
R B W
90°
➔
0°
0°
➔
90°
L1
RBW
COM
HI
LO
AUTO
53
54
55
56
52
1
2
3
46
45
65
66
67
68
17
18
37
38
13
14
15
BCU 580..F2
3,15AT
µC
49
50
51
88
c
c
41
42
24V
DC
5 6
9
11 12
10
7
62 61
N
M
+ F -
0°
➔
90°
L1
mA
A D
OUT
+
-
RBW
COM
HI
LO
AUTO
53
54
55
56
52
1
2
3
46
45
17
18
37
38
13
14
15
BCU 580..F2
3,15AT
µC
88
c
c
41
42
24V
DC
5 6
9
11 12
10
7
62 61
65
66
67
68
49
50
51
PLC
The RBW actuator reports that it has reached the posi-
tion for maximum capacity via a signal to terminal 51.
The actuator reports that it has reached the position
for minimum capacity via a signal to terminal 52. The
simultaneous activation of terminals 51 and 52 results
in a fault lock-out of the BCU.
If parameter 41 = 0, the system monitors the movement
to the positions for maximum and minimum capac-
ity with a timeout time of 255 s. Reaching the relevant
position immediately triggers the program continue
switch conditions. If reaching the position is not sig-
nalled within the timeout time of 255 s, a safety shut-
down of the BCU will be performed. A fault message (
A
or
A
) will be displayed, see page 51 (Fault signal-
ling).
If parameter 41 = 1, the system does not monitor
whether the positions for minimum and maximum
capacity are reached. In this case, a running time of
up to 250 s must be defined using parameter 42, see
page 84 (Running time). The program continue
switch conditions are then controlled dependent on
this time.
If a fault occurs, the actuator is moved to the position
for minimum capacity.
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