Azbil 700 series - Page 84

5-8
Message
LUI display
example *1
LUI display
Description and cause Action
Upper
part
Lower part
[*: Optional]
Temp Low
Alarm
AL_16 0x08,0x09,0x0A
The internal temperature
is lower than the
specified threshold value.
- Check the ambient
temperature.
- Check that the threshold
value is appropriate for
the usage environment.
Restriction
is clogged
AL_04 0x01
The EPM drive signal
has exceeded the normal
operation range.
- The fixed diaphragm is
clogged.
- Air is not supplied.
- The valve shaft is
galled.
- Clean the fixed flow
restriction.
- Check the supply air
pressure.
- Check the EPM drive
signal.
- Change the input signal
to confirm seamless
operation.
(- Perform auto setup.)
Deposits on
the Nozzle-
Flapper
AL_04 0x02
The EPM drive signal
has exceeded the normal
operation range.
- The nozzle is clogged.
- The A/M switch is in
manual mode.
- Clean the nozzle.
- Check that the A/M
switch is in auto mode.
- Check the EPM drive
signal.
- Change the input signal
to confirm seamless
operation.
Total Stroke
Alarm
― ―
The cumulated sliding
distance is larger than
the threshold value.
Check the operation of
the control valve.
Cycle Count
Alarm
― ―
The number of inversion
operations is larger than
the threshold value.
Check the operation of
the control valve.
Shut Count
Alarm
― ―
The number of fully
closing operations is
larger than the threshold
value.
Check the operation of
the control valve.
Max Tvl
Speed +
Alarm
― ―
The maximum operation
speed + is larger than the
threshold value.
Check the operation of
the control valve.
Max Tvl
Speed -
Alarm
― ―
The maximum operation
speed - is smaller than
the threshold value.
Check the operation of
the control valve.