AMC-400 Series Digital Transmitter with Smart Sensor 2
30
5.1.5 SENSOR STATUS LED
The Sensor LED Status under normal operation has a slow blinking green indication. Slow
blinking green indicates good Smart Sensor 2 communication detected and no sensor faults.
Numerous sensor faults can occur under various situations and is indicated with momentary fast
blinking red indication.
Caution:
Sensor LED status will momentarily fast blink red under a minor sensor fault situation,
such as a packet error. Consult AMC for service if minor sensor fault persists.
Below is the possible Sensor LED Status:
Sensor LED State
Definition
Action
Slow Blinking Red
Smart Sensor 2
initializing.
Wait for initialization to complete.
Slow Blinking Green
Smart Sensor 2 is healthy. No action required.
Fast Blinking Green
Smart Sensor 2 is healthy,
but no communication
detected.
Check if Smart Sensor is properly
connected to TX.
Slow Blinking Green/Red Smart Sensor 2 is in
configuration mode.
Complete configuration and exit.
Fast Blinking Green/Red
Smart Sensor 2 is in
gassing state of
calibration.
Complete calibration and exit.
Blinking Red for
10seconds every minute
of Slow Blinking Green
Smart Sensor 2 module
requires services either
calibration or other
service. DT display will
complement this with
“
CAL
” and/or “
SEr
”
indication.
Consult calibration section in this
manual or contact AMC. It is not
recommended to operate Smart
Sensor 2 module requiring service or
when calibration is needed. Sensor
operated beyond calibration schedule
or requiring service may provide
erroneous readings.
Fast Blinking Red
Smart Sensor 2 has
experienced a minor fault
in the last 10 seconds of
operation.
Check if Smart Sensor has valid
operating limits (i.e. power supply,
temperature, and Smart Sensor
addressing). Consult AMC for service
if status persists.
Solid or long period Red,
Green or Orange
Smart Sensor 2 has
experienced a severe
fault.
Wait one to two minutes for unit to
enter normal mode. Consult AMC for
service if status persists.
LED Extinguished
Smart Sensor 2 is
powered off.
Check Smart Sensor 2 wiring or
power supply state. Consult AMC for
service if status persists.
Note:
The Smart Sensor 2 will experience a reboot and enter initialization state (slow blinking
RED Sensor Status LED) if no transmitter requests are detected for a period of five
minutes. Additionally a failed Smart Sensor 2 will reboot after one to two minutes.