Valves - Festo Compact Performance Series Programming And Diagnosis

3. Diagnosis

3.2.3 Valves

There is a yellow LED for each valve solenoid coil. This
LED indicates the switching status of the valve solenoid
coil.



Fig. 3/2: LEDs of the valve solenoid coils
LED Switch position
of valve solenoid
coil
Yellow out Basic position
• Switch position
Yellow alight
or
• basic position
3-6
Yellow LED row for pilot solenoid 14
Yellow LED row for pilot solenoid 12
Meaning
Logic 0 (no signal)
Logic 1 (signal present)
Logic 1 but:
• operating voltage of valves lies below
the permitted tolerance range (DC < 20.4 V)
or
• fault in compressed air supply
or
• pilot exhaust blocked
or
• servicing required

CP-CO 9801NH