Festo OVEM, Operating Instructions Manual

Page: 100 / 111

OVEM
100 Festo – OVEM – 1407c English
9 Fault clearance
Malfunction Possible cause Remedy
Workpiece does not
release from the
suction cup
A vacuum has built up when lifting
large suction cups quickly
Increase the duration and intensity of
the ejector pulse
Lift the suction cup from the
workpiece more slowly
Actively set the ejector pulse when
lifting the suction cup
Workpiece does not
release from the
suction cup
Hose used between the suction cup
and vacuum suction nozzle is
incorrectly dimensioned (hose is too
long and/or hose internal diameter is
too small)
Replace the hose
Hose requirements
è
chapter 5.2, page 74
Flow control screw is closed Open the flow control screw
No display Supply voltage not applied or
permitted operating voltage not
present
Switch on supply voltage / maintain
permitted operating voltage range
Electrical connections swapped
(incorrect polarity)
Wire in accordance with the circuit
diagram
Device defective Replace the device
Incomplete display Display defective Replace the device
Incorrect pressure
display
Pneumatic connections swapped Connect tubing in accordance with
section “Pneumatic installation”
Device operated with impermissible
medium
Replace device and operate with
compressed air only
Outputs do not
switch according to
settings
Short circuit/overload at relevant
output
Eliminate short circuit/overload
Device defective Replace the device
Settings cannot be
edited (“Lock” in the
display)
Access protection active Enter the security code (if the
security code has been lost, reset the
device to the factory settings
è
chapter 7.3, page 94)