Festo CTEU-DN, Description, Functions And Maintenance

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5. Diagnostics
5-5
Festo P.BE-CTEU-DN-OP+MAINT-EN en 1206NH
5.2.2 PS-LED status display
PS status - Operating and load voltage supply
(Power System, Power Load)
LED display Status/significance Error handling
LED illuminated
green
– Normal operating status
– Operating voltage applied
(in the approved range)
– Load voltage present (in the ap-
proved range)
1)
–
LED flashes
green (1 Hz)
– Operating voltage is below
the required voltage
– Load voltage is below
the required voltage
1)
– Short circuit at the I-port
1)
•
Eliminate short circuit on the bus
node
•
Eliminate undervoltage on the con-
nected I-port device
LED is off
– Operating voltage not applied
•
Check the power supply
1)
Display depends on whether the connected device monitors the load voltage and reports to the
bus node
Tab. 5/2: Status displays of the device-specific “PS” LED