Festo DLP-VSE Series, Manual

Page: 88 / 112

5. Diagnosis
5-4
Festo P.BE-DLP-VSE-... en 0206a
5.2 Diagnosis when connected to PROFIBUS-DP
5.2.1 Diagnosis with the LEDs “POWER” and “BUS”
On the user interface there are two LEDs (POWER and BUS)
by means of which you can read diagnostic messages from
the Local control unit.
Display
POWER-LED Operating status Error treatment
out Operating voltage for the electronics
is not applied
S
Check the operating voltage con-
nection (pin 1)
flashes fast Load voltage < 20.4 V (V
tol
)
S
Check the operating voltage supply
(pin 5)
flashes slowly Load voltage < 10 V (V
val
)
S
Check the operating voltage supply
(pin 5)
Fig. 5/5: Error diagnosis with the green POWER-LED
Load voltage faults are always shown with the green LED,
irrespective of the diagnostic mode set.
If the device-related diagnosis is activated, the faults will also
be communicated to the master PLC via the field bus connec-
tion.