5
OPERATION
36
TT 51 SERIES
www.krohne.com
08/2015 - 4000754203 - MA TT 51 R03 en
Messages in AMS, PDM and FC 375 / FC 475 device
diagnostic
Actions
Device specific
Failure Error message
Error correction
Transmitter
F
Sensor break channel 1
Sensor wire broken. Check the sensor and sensor
connection on the channel 1. If error remains replace the
sensor connected to channel 1.
Transmitter
F
Sensor break channel 2
Sensor wire broken. Check the sensor and sensor
connection on the channel 2. If error remains replace the
sensor connected to channel 2.
Transmitter
F
Sensor short circuit
channel 1
Sensor wire shorted. Check the sensor and sensor
connection on the channel 1. If error remains replace the
sensor connected to channel 1.
Transmitter
F
Sensor short circuit
channel 2
Sensor wire shorted. Check the sensor and sensor
connection on the channel 2. If error remains replace the
sensor connected to channel 2.
Transmitter
F
Sensor low isolation
channel 1
To low isolation in the sensor. Check the sensor by
measuring resistance between the wires. If error remains
replace the sensor connected to channel 1.
Transmitter
F
Sensor low isolation
channel 2
To low isolation in the sensor. Check the sensor by
measuring resistance between the wires. If error remains
replace the sensor connected to channel 2.
Transmitter
F
Sensor drift
Check the sensors and limits for sensor drift. If error
remains replace the faulty sensor.
Transmitter
F
System error
Make a self test to find out more. If the error remains
replace the device.
Messages in AMS, PDM and FC 375 / FC 475 device
diagnostic
Actions
Device specific
Out of
speci-
fication
Error message
Error correction
Transmitter
S
High limit alarm OPM
Check the sensor(s) and sensor connection on both
channels. If error remains replace the sensor(s)
connected to the transmitter.
Transmitter
S
Low limit alarm OPM
Check the sensor(s) and sensor connection on both
channels. If error remains replace the sensor(s)
connected to the transmitter.
Messages in AMS, PDM and FC 375 / FC 475 device
diagnostic
Actions
Device specific
Main-
tenance
requi-
red
Error message
Error correction
Transmitter
M
Sensor backup
Transmitter is measuring the working sensor (channel).
Replace the faulty sensor.
MA_OPTITEMP_TT_51_en_150828_4000754203_R03.book Page 36 Friday, August 28, 2015 10:54 AM
