On-The-Spot Diagnosis; Led Displays; Field Bus Node - Festo FB16 Electronic Manual

VIFB16 - 03/05

5.2 ON-THE-SPOT DIAGNOSIS

LEDs Operating status
RUN (green)
off Operating voltage off.
on Operating status normal or:
operating status normal but valves
do not switch.
Possible causes:
• opearting voltage of outputs
• compressed air supply not correct.
• pilot exhaust blocked
5-4
5. Diagnosis/error treatment

LED displays

Field bus node

The LEDs on the cover of the node indicate the
operating status of the valve terminal.
Green LED
(operating
status display)
Red LED
(error display)
Fig. 5/2: LEDs of node
Operating status of the valve terminal:
outside permitted tolerance range
or off.
POWER I/O ERR
NET ERR
BUS
Error handling
Check power supply to the
electronic components
(Pin 1).
none
Check...
• power supply of outputs
(tolerance range
DC 21.6 V...26.4 V)
• compressed air supply
• channels to remove pilot
exhaust
0506b