Festo CTEU-EC - PS LED Status Display

3. Diagnosti cs
3-5
Festo P.BE-CTEU-EC-OP+MAINT-EN en 1208NH
3.2.2 PS LED statu s display
PS (power system) – power sensor/logic supply
LED Process Status Meaning/error elimination
LED illuminated
green
ON
OFF
Normal operating status:
– Operating voltage present (in
the approved range)
– Load voltage present (in the
approved range)
1)
–
LED flashes
green
ON
OFF
–Operatingvoltageisbelow
the required voltage
– Load voltage is below the re-
quired voltage
1)
• Eliminate undervoltage at the
connected device
LED is off
ON
OFF
Operating voltage not present • Check the power supply
1)
Display depends on whether the connected device monitors the load voltage and reports this to
the bus node
Tab. 3/2: Status displays of the device-specific “PS” LED