Flowserve NRS 1-42 - Manual (Page 19)

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LED “Bus status” flashes slowly.
System Malfunction 4
System Malfunctions
– continued –
Fault: Data transfer in CAN bus interrupted.
Remedy: The bus cables have to be correctly connected according to the wiring
diagram (observe polarity!). Make sure that all end-of-line nodes are
provided with 120
Ω
terminating resistors. Disconnect the system from its
power supply. After 5 sec. connect power and restart system.
Fault: Malfunction in CAN bus.
Remedy: Restart system.
Fault: The baud rate of one or more nodes is not set correctly.
Remedy: Check baud rate settings of all bus nodes. The baud rates must be
identical. Refer to section “Annex” for more details. Disconnect the system
from its power supply. After 5 sec. connect power and restart system.
Fault: The overall length of the bus cable does not correspond to the selected
baud rate.
Remedy: Change baud rate settings of all nodes according to the ratings indicated
in section “Annex”. Disconnect the system from its power supply. After 5
sec. connect power and restart system.
LED “Bus status” flashes slowly
MAX
/
MIN
alarm
System Malfunction 3
Fault: The plausibility test shows that the low level electrode ends above high
level.
Remedy: Check electrode tips and, if necessary, correct the assignment of the
connectors on the preamplifier board of the electrode.
LED flashes slowly
The four indicator LEDs flash slowly.
LED flashes slowly
LED flashes slowly