MemoTrans
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11 Diagnostics and Troubleshooting
11.1 Diagnostic Information via LED
See LED display in the Commissioning chapter.
11.2 Adapting the Diagnostic Information
Path:
Diagnostics
Diagnostic settings
Function
Options
Info
Sensor change alarm
delay
0
…
180 s
Factory setting
30 s
Sensor HOLD
Fault current
3.6
…
23.0 mA
Factory setting
3.6 s
Possible range of fault current.
LED shows NAMUR
status signal
Selection
• Off
• On
Factory setting
Off
Additional LED signals for diagnostic messages as per NAMUR NE107
categories.
Diagnostics behavior
The list of diagnostic messages displayed. There are device-specific
messages, and messages that depend on what sensor is connected.
Select the message to be adapted.
Only then can you make the settings for this message.
Status signal
The messages are divided into different error categories in accordance
with NAMUR NE107.
Diagnostics behavior
Selection
• Service
• Alarm
LED as per NAMUR NE107 categories:
Three rapid green blinks at the start of the message means: Everything OK – but pay attention!
The more red blinks there are at the end of a message, the more critical the diagnostics as per NE107.
Continuous red-only blinking means: Error in device or sensor, take action immediately.
LED behavior
Status
Three rapid green blinks and a single rapid red blink Device or sensor requires maintenance.
M status signal as per NAMUR NE107
Three rapid green blinks and two rapid red blinks
Device and sensor are being operated out of specification.
S status as per NAMUR NE107
Three rapid green blinks and three rapid red blinks
Device or sensor undergoing function check.
C status signal as per NAMUR NE107
Red
Blinks quickly
Failure of device or sensor
F status signal as per NAMUR NE107