Dwyer 2500 - Manual (Page 15)

December, 1998 Page 15 949-1190-1
DIAGNOSTIC ERROR MESSAGES
ACTION REQUIRED
Input signals may normally go above
or below range ends. If not, check
input and correct.
To reset use the INDEX & 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 remain active, however
UFL or OFL will still be displayed.
Correct or replace sensor. To reset
use the INDEX & ENTER keys.
Remove the instrument for service
and / or recalibration. To reset use
the INDEX & ENTER keys.
Remove the instrument for service
and / or recalibration. To reset use
the INDEX & ENTER keys.
Check that the power supply is on,
or that the external fuses are good.
The display alternate between FAIL
tESt and one of the following mes-
sages: FACt dFLt: Memory may be
corrupted. Press the ENTER key
and the DOWN ARROW key to start
the factory default procedure. Re-
check controller programming. rEt
FACt: Can not recover from error,
return to factory for service.
Correct the SP or adjust the SPL or
SPH values by programming new
values.
Correct the SPL or SPH values by
programming new values.
DISPLAY
UFL
or
OFL
bAd
InP
OPEn
InP
CHEC
CAL
No
display
lighted
FAIL
tESt
CHEC SP
CHEC ALLO
CHEC ALHi
CHEC
SPL
or
CHEC
SPH
MEANING
Underflow or Overflow:
Process value has ex-
ceeded input range
ends.
UFL or OFL will se-
quence 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.
Check calibration ap-
pears as an alternating
message if the instru-
ment calibration nears
tolerance edges.
Check calibration ap-
pears as a flashing mes-
sage if the instrument
calibration exceeds
specification.
Display is blank. Instru-
ment may not be getting
power, or the supply
voltage is too low.
Fail test appears upon
power up if the internal
diagnostics detect a fail-
ure. This message may
occur during operation
if a failure is detected.
Displays flash.
This message will ap-
pear upon power up if
the set point is set out-
side of the SPL or SPH
values.
This message appears
at power up if SPL or
SPH values are pro-
grammed outside the
input range ends.
SP OUTPUTS
Set point
output active
Alarms active
Set point
output inactive
Alarms active
Set point
output active
Alarms active
Set point
output inactive
Alarms active
Set point
output inactive
Alarms inactive
Set point
output inactive
Alarms inactive
Set point
output inactive
Alarms active
Set point
output inactive
Alarms inactive