Festo — VTSA-F-CB — 2021-06a
Malfunctions
75
10.1.1.4 LED displays of the pilot air switching valves
LED
Meaning
Possible errors
Solenoid coil LED 14
off
–
Signal not pending
–
logic 0
–
yellow
light
–
Signal is pending
–
logic 1
Valve has not switched although a
signal is pending.
The following malfunctions may be
present:
–
Operating voltage of the valves is
outside the permissible tolerance
range (21.6 … 26.4 V DC)
–
Compressed air supply defective
–
Pilot exhaust air blocked
–
Service required
LED of the pressure switch
green
light
Duct (14) is exhausted.
–
Tab. 51: LED displays of the pilot air switching valves
10.1.1.5 LED displays of the pneumatic interfaces
LED
Meaning
VABA-S6-1-X1-CB, VABA-S6-1-X2-CB, VABA-S6-1-X1-3V-CB and VABA-S6-1-X2-3V-CB
red light
–
Initialisation error
–
Diagnostics
–
Valve undervoltage (U
VAL
)
–
Wire break (Open Load)
–
Short circuit at valve
VABA-S6-1-X2-F1-CB and VABA-S6-1-X2-F2-CB with integrated output module CPX-FVDA-P2
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Brief description of CPX-FVDA-P2.
Tab. 52: LED displays of the pneumatic interfaces
