Cpu Board Led Summary - Vega FiberFlex LFXG-H Operating Instructions Manual

Table 5.8

CPU board LED summary

LED Description
Me Memory
m corruption
(EEPROMs
and FLASH)
HA HART
RT communicati
on indicator
CP Central
U processing
unit on CPU
board
Aux Auxiliary
input
frequency
signal
indicator
HV Sensor high
voltage
Fiel Radiation
d field
indicator
LFXG-H Installation and Operation Guide
Normal condition
OFF
–
ON blinks when
receiving HART
messages
Blinks at rate of 1
time per second
Blinks if auxiliary
input present. OFF
if no auxiliary input
present
–
ON high voltage
is within
specification
Cycles in proportion
to radiation field
intensity at detector.
ON for 10 seconds
for each mR/hr,
then off for 2
seconds.
(Can use LED 5 that
blinks 1 time/sec to
time LED1 for field
indicator.)
Error condition
1 blink: CPU
EEPROM
corrupt
2 blinks: Sensor
EEPROM
corrupt
3 blinks: Both
EEPROMs
corrupt
4 blinks: RAM
corrupt
5 blinks: Memory
mismatch
ON solid:
combination of
errors
None
LED does not
blink. CPU not
functioning.
None
–
OFF high
voltage is
outside of
specification
None
Diagnostics and repair
Recommendation
Check software
diagnostics. Call
VEGA Field
Service.
Check HART
device connection
on loop and HART
device functioning.
Check power input.
Replace CPU
board.
Check auxiliary
input wiring
terminals 11 and 12
with a meter for
frequency signal.
Check auxiliary
input equipment.
Call VEGA Field
Service
Check for closed
source shutter,
buildup, and
insulation.
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