Inovance GL20-RTU-PN - Page 27

‑25‑
LED Indicator
Status (see "
1.2
Components
"
on page 8 )
Fault Description Cause Solution
SF Flash‑
ing
(red)
Power supply
overvoltage
Unstable power supply
to the module or power
failure
Check the power supply
of the module
Power supply
undervoltage
External 24 V power
supply power failure
Chip overheating DAC device
temperature is too high
1. Check whether the
module hardware
is faulty
2. Replace the module
ADC device failure ADC device failure
DAC device failure DAC device failure
Reference channel
failure
TC module cold end
sampling channel
failure
1. Check TC module
cold end channel
hardware
2. Replace the module
Channel x
disconnected
Analog channel wiring
disconnected
1. Check the external
wiring of the
module channel
2. If external wiring is
correct, it is
recommended to
check the internal
hardware of the
module or replace
the module
Channel x shorted Analog channel wiring
shorted
Channel x data
exceeds upper limit
Channel data is
abnormal and out of
normal range
Check whether the
external input signal of
module is abnormal
Channel x data
exceeds lower limit
Channel x data
overflow
Channel x data
underflow