![background image](http://html1.mh-extra.com/html/ifm/sdg-50-series/sdg-50-series_operating-instructions-manual_3968614035.webp)
Flow meter compressed air
SDGx50
35
14 Troubleshooting
The unit has many self-diagnostic options. It monitors itself automatically during operation.
Warnings and error states are displayed even if the display is switched off. Error indications are also
available via IO-Link.
The status signals are classified according to NAMUR recommendation NE107.
If several diagnostic events occur simultaneously, only the diagnostic message of the event with the
highest priority is displayed.
If a process value fails, the other process values are still available. Exception: If the process value for
flow fails, no other process values are output.
Additional diagnostic functions are available via IO-Link
Ò
IO-Link interface description at
14.1 Error messages
Indication
Problem/remedy
• Title line: ERROR
• Process value line: ERROR
Unit faulty / malfunction
u
Replace the unit
No display
• Supply voltage too low
u
Check the supply voltage
• Display switched off
u
Check whether setting [diS.B] = OFF and change setting if
necessary
• Title line: Parameter Error
• Process value line: PARA
Parameter setting outside the valid range
u
Check parameter setting
• Title line: Pressure Error
• Process value line: ERROR
Error in pressure measurement
u
Check pressure measurement
u
Replace the unit
• Title line: Flow Error
• Process value line: ERROR
Error in flow measurement
u
Check flow measurement
u
Replace the unit
• Title line: Temp Error
• Process value line: ERROR
Error in temperature measurement
u
Check temperature measurement
u
Replace the unit
• Title line: Critical over limit
• Process value line: cr.OL
Detection zone exceeded
u
Check the measuring range
• Title line: Critical under limit
• Process value line: cr.UL
Detection zone not reached
u
Check the temperature range
In the event of an error, the outputs react according to the setting under [FOU].
14.2 Warning messages
Indication
Problem/remedy
• Title line: Short circuit OUT1/OUT2
• Process value line: ---
• Switching status LEDs for OUT1 and OUT2 flashing
Short circuit in both outputs.
u
Check OUT1 and OUT2 for short circuit or excessive
current.
• Title line: Short circuit OUT1
• Process value line: ---
• Switching status LED for OUT1 flashing
Short circuit output 1.
u
Check OUT1 for short circuit or excessive current.