66
table 5-3 BSC Fault List
No.
Fault name
Common causes
Corrective measures
1
Node 1~
Node 16
failure
Node input signals
differ from the default
configuration signals
(configuration items).
•
Check for loose node feedback
signal wires and abnormal node
feedback messages.
2
BSC-PCS
communica-
tion failure
An abnormality was
detected in the
communication
between the BSC and
the PCS.
•
Check that the PCS is powered up
and operating correctly.
•
Check that the BSC and PCS
communication
lines
are
connected.
•
Check that the BSC and PCS
addresses are configured correctly.
3
BSC-LC
communica-
tion failure
An exception was
detected in the
communication
between the BSC and
the LC.
•
Check that the BSC and LC
communication
lines
are
connected.
•
Check that the BSC and LC
addresses are configured correctly.
4
Fault in the
low voltage
supply
circuit
An abnormality was
detected in the low
voltage supply circuit.
•
Check that the power supply to the
contactor coil is disconnected.
•
Check that the UPS output 24V is
normal.
•
Check for short circuits in the low
voltage supply circuit.
table 5-4 BSC Alarm List
No.
Alarm
name
Common causes
Corrective measures
1
Node 1~-
Node 16
alarms
The node input signal
is different from the
default configuration
signal (configuration
item).
•
Check for loose node feedback
signal wires and abnormal node
feedback messages.
2
BSC-DCDC
communica-
tion alarms
The BSC
communicates with
the DCDC
exceptionally.
•
Check that the BSC and DCDC
communication
lines
are
connected.
•
Check that the BSC configuration
DCDC address is correct.
•
Does
the
DCDC
restore
the
factory settings.
Operation & Maintenance Instruction
Содержание ST2752UX
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