Valves - Festo VIFB-02 Series Manual

VIFB8 – 02
Yellow LEDs
(switching status display
of valve solenoid coil)
LED Switch position of
valve solenoid coil
Yellow off Basic position
• Switch position
Yellow on
or
• Basic position
Fig 6/3: LED-display – Switching status of valve solenoid coil
9706
6. Diagnosis/error treatment

Valves

There is a yellow LED above or below each
valve solenoid coil. This LED indicates the
switching status of the valve solenoid coil.
Meaning
Logic 0 (no signal)
Logic 1 (signal exists)
Logic 1 but:
• Operating voltage of outputs is below
permitted tolerance range
(DC 21.6V...26.4V)
or
• Compressed air supply not correct
or
• Pilot exhaust blocked
or
• Service case
6-5