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• Assign a network name corresponding to the
default network name (bcu-460-xxx) or use the
default name as a suffix of an individually as-
signed name in the following form: "individual-
partofnamebcu-460-xxx".
▷ "xxx" stands for the address set on the device
(e.g. 4A5).
? The display blinks and indicates
! PLC in STOP position.
• Check whether the PLC can be started.
? The display blinks and indicates
! The ambient temperature is too high for the BCU
(excessive temperature).
▷ The display disappears as soon as the tempera-
ture has dropped to the specified setpoint.
? The display blinks and indicates
! The ambient temperature is too low for the BCU
(insufficient temperature).
▷ The display disappears as soon as the tempera-
ture has risen to the specified setpoint again.
E
0
E
1
E
4
E
5
E
8
E
9
? The display blinks and indicates
,
,
,
E 2
E 3
E 4
E 5
! The signal for monitoring the min. gas pressure
(terminals 36, 37 and 38) has dropped out at
program step X (00 to 09).
• Check the wiring.
• Check the gas pressure.
4
4
.
O
T
OT
.
U
T
UT
.
E
2
E
3
E
6
E
7
E 0
,
E 1
,
,
,
or
E 6
E 7
E 8
E 9
Replacing the fuse
▷ The device fuses F1, F2 and F3 can be removed
for inspection.
▷ The fuses are located under the power module.
CAUTION
BCU..E0 and BCU..E1 do not have the same power
supply connection. Always replace fuse F1 or F2
such that the required power supply is ensured.
▷ F1 = BCU..E1: power supply via L1.
▷ F = BCU..E0: power supply via safety in-
terlocks.
• Disconnect the system/BCU from the electrical
power supply.
• Open the BCU.
• Remove the power module.
• Remove fuse F1, F2 or F3 and check for correct
functioning.
F1
,
.
▷ When replacing the fuse, use only the approved
fuse type:
F1, F2, F3: T 3.15A H,
pursuant to IEC 60127-2/5.
GB-24
F1
F2 F3
F2 F3
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