Temperature Multi-Input Device
Troubleshooting
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6
Troubleshooting
The following chapter offers explanations on the LED information statuses, possible fault error
causes and remedies.
1. Sensor-specific red LEDs: Indicate the status of the related sensor input channels
2. Red LED COM ERR: Indicates the communication status
3. Green LED PWR: Indicates the status of the bus power
6.1
LED Indications
LED Status and Error Indication
1
2
3
LED
Statuses
Cause
Remedy
PWR
(green)
OFF
No power supply
■
Check power supply
■
Check fieldbus cable wiring
Permanentl
y ON
Power available
-
COM (red) OFF
Communication active
-
Permanentl
y ON
Hardware error
Send device to Fuchs for
repair
Flashing
ON/OFF
No communication
Communication errors
■
Check LAS
■
Check wiring
Sensor
(red)
Channel
1–8
OFF
No sensor errors
detected
-
Flashing
ON/OFF
Sensor error (over / under
range, wiring error, lead
breakage)
Check sensor wiring. Refer to
diagnostic messages in the respective
sensor transducer block for details.