Dwyer 16A - Manual (Page 38)

Page 38
ERROR MESSAGES
Any error message may be cleared by using the ‘Global Reset’ by pressing
and holding the INDEX & ENTER keys for fi ve seconds.
A
DISPLAY MEANING SP OUTPUTS ACTION REQUIRED
UFL
or
0FL
bAd
1nP
0PEn
1nP
Underflow or Overflow:
Process value has
exceeded input range
ends.
UFL or 0FL will
sequence to display
one of these messages
if the InPt is set for a
time value.
For RTD inputs RTD is
open or shorted. For
THERMOCOUPLE
inputs thermocouple
is open.
Set point outputs
active.
Alarm active.
Set point outputs
inactive.
Alarm active.
May be normal if Input signals
go above or below range ends.
If not the case, check sensor,
input wiring and correct.
When 1nPt (input fault timer)
has been set for a time, the
outputs will be turned off after
the set time. Setting the time
to 0FF causes the outputs to
remain active, however UFL or
0FL will still be displayed.
Correct or replace sensor.
Clear with ‘Global Reset’.
L00P
bAd
The sensor may be
defective, heater fuse
open, heater open, or
the final power output
device is bad.
Set point outputs
inactive.
Alarm active.
Correct or replace sensor, or
any element in the control loop
that may have failed.
Correct the problem.
SEnC
bAd
Sensor Rate of
Change exceeded
the programmed
limits set for SEnC .
Set point outputs
inactive.
Alarm active.
Check for the cause of the
error. The value setting may
be too slow for the process, or
the sensor is intermittent.
Correct the problem.
CHEC
CAL
Check calibration
appears as an
alternating message
if the instrument cali-
bration nears tolerance
edges.
Check calibration
appears as a flashing
message if the instru-
ment calibration
exceeds specification.
Set point outputs
inactive.
Alarm active.
Set point outputs
inactive.
Alarm active.
Remove the instrument for
service and / or recalibration.
Remove the instrument for
service and / or recalibration.
DIS
No
li
F
t
1
C
C
C
r
C
L
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