Festo DADE-MVC Serie Mode D'emploi page 24

7 Diagnosis
If there is a fault: reference output and ready output = 0
If there is a stroke fault: only ready output = 0.
LED S1 LED S2
green flashes
red once
green flashes
red
twice
green flashes
red 3
times
green flashes
red 4
times
red off
green red
red red
24
Fault / Remedy
Sensor fault: Check sensor
and sensor cable
Referencing fault:
DNCI has moved during Ref= 1
DNCI must be at a stand. Carry
out referencing again.
Calibration fault:
DNCI has moved during Cal =
1
DNCI must be at a stand.
Carry out calibration again.
Increment fault:
Number of increments be­
tween reference point and
stroke length too small (DNCI
has not moved).
Carry out calibration again.
Undervoltage:
Check voltage.
Stroke fault:
Signal value outside the
intended range.
Check stops, or reset.
Short circuit at an output:
eliminate
Reset
– Switch off,
switch on
– Switch off,
switch on
– or reference
input = 1
– Switch off,
switch on
– or calibration
input = 1
– Switch off,
switch on
– or calibration
input = 1
– Switch off,
switch on
– Switch off,
switch on
– or bring DNCI
into per­
mitted range
– or reset (see
chapter 6.1).
– Switch off,
switch on
Festo DADE-MVC 1503b English