Festo FB16 Electronic Manual page 145

VIFB16 - 03/05
LED Switching position of
valve solenoid coil
Yellow out Basic position
• Switch position
Yellow alight
• basic position
Fig. 5/5: LED display – switching status of ISO valve solenoid coil
0506b
5. Diagnosis/error treatment
There is a yellow LED for each valve solenoid
coil on the ISO valve terminal. This LED shows
the switching status of the valve solenoid coil.
12 14 12 14 12 14
yellow LEDs
or
Meaning
Logic 0 (no signal)
Logic 1 (signal applied)
Logic 1 but:
• operating voltage of outputs is
outside permitted tolerance range
(DC 21.6 V...26.4 V)
or
• compressed air supply not correct
or
• servicing required
12
14
5-7