Dwyer Instruments LOVE CONTROLS 32A Series, Instructions Manual

Page: 33 / 54

Page 33
DIAGNOSTIC ERROR MESSAGES
DISPLAY
UFL
or
OFL
bAd
InP
OPEn
InP
LOOP
bAd
SEnC
bAd
CHEC
CAL
MEANING
Underflow or Overflow:
Process value has
exceeded input range
ends
UFL or OFL 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 THERMOCOU-
PLE inputs thermo-
couple is open.
The sensor may be defec-
tive, heater fuse open,
heater open, or the final
power output device is
bad.
Sensor Rate of Change
exceeded the programmed
limits set for SEnC.
Check calibration appears
as an alternating message
if the instrument calibration
nears tolerance edge.
Check calibration appears
as an alternating message
if the instrument calibration
exceeds specification.
SP OUTPUTS
Set point outputs active
Alarm active.
Set point outputs inactive
Alarm active.
Set point outputs inactive
Alarm active.
Set point outputs inactive
Alarm active.
Set point outputs active
Alarm active.
Set point outputs inactive
Alarm active.
ACTION REQUIRED
Input signals may normally go
above or below range ends. If
not, check input and correct.
To reset use the INDEX and
ENTER keys. When InPt (input
fault timer) has been set for a
time, the outputs will be turned
off after the set time. Setting the
time to OFF causes the outputs
to remail ac-tive, however
UFL
or OFL will still be displayed.
Correct or replace sensor. To
reset use the
INDEX & ENTER
keys.
Correct or replace sensor, or any
element in the control loop that
my have failed. Correct the prob-
lem, and reset the control by
pressing INDEX and ENTER
keys, or INDEX to LPbr and
press ENTER.
Check for the cause of the error.
The value setting may be too
slow for the process, or the sen-
sor is intermittent. Correct the
problem and press INDEX and
ENTER to reset.
Remove the instrument for serv-
ice and / or recalibration. To
reset use the
INDEX & ENTER
keys.
Remove the instrument for serv-
ice and / or recalibration. To
reset use the
INDEX & ENTER
keys.