These warnings appear when any valve doesn’t open with the petition or opens without
the petition. The PLC has two signals, one digital output for petition and a digital input
for know if the valve is open or not.
These warnings could appear by the next reasons:
• Compressed air pressure lack.
• Blow fuse.
• Pilot magnetic valve fail.
• Valve doesn’t open totally (or closed).
• Inadequate connections (slacks or without protection).
• Magnetic valve actuated manually.
• Compressed air tube wrong connected.
The way how to solve every one of these problems are:
• Get back the working compressed air supply conditions.
• Change the fuse with another one (maximum 2 A).
• Change the magnetic valve.
• Check and clean the valve.
• Check corresponding connections.
• Manual deactivates of the valve.
CAUTION: Is very important paying attention during the test of these warnings,
because is possible to make damage to equipment or to the person.
The way for testing these warnings with cycle running is:
• Remove the fuse of the valve.
• Actuate it manually from the TS.
Another way is, with cycle running too:
• Actuate manually from the magnetic valve.