Dwyer 2600 - Manual (Page 42)

May, 2013 Page 42 of 52 949-1194 Rev. 7
ERROR MESSAGES
Any error message may be cleared by using the ‘Global Reset’ by pressing and
holding the INDEX & ENTER keys for five seconds.
Display
U F L
or
O F L
b A d
I n P
O P E n
I n P
L O O P
b A d
S E n C
b A d
C H E C C A L
Meaning
Underflow or Overflow:
Process value has
exceeded input range
ends.
U F L or O F L will
sequence to display
one of these messages
if the I n P t is set for a
time value.
For RTD inputs RTD
is open or shorted.
For THERMOCOUPLE
inputs thermocouple
is open.
The sensor may be
defective, heater
fuse open, heater
open, or the final
power output device
is bad.
Sensor Rate of
Change exceeded
the programmed
limits set for S E n C .
Check calibration
appears as an
alternating message if
the instrument
calibration nears
tolerance edges.
Check calibration
appears as a flashing
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
May be normal if Input signals go
above or below range ends. If not the
case, check sensor, input wiring and
correct.
When I n P t (input fault timer) has
been set for a time, the outputs will
be turned off after the set time.
Setting the time to O F F causes the
outputs to remain active, however U F L
or O F L will still be displayed.
Correct or replace sensor.
Correct or replace sensor.
Clear with ‘Global Reset’.
Correct or replace sensor, or any
element in the control loop that may
have failed. Correct the problem.
Clear with ‘Global Reset’
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. Clear with
‘Global Reset’.
Remove the instrument for service
and / or recalibration.
Remove the instrument for service
and / or recalibration.