Honeywell UDC3500 Product Manual page 80

Configuration
Function Prompt
Lower Display
AT ERROR
(Read Only)
AT ERR 2
(Read Only)
66
Selections or
Range of Setting
Upper Display
NONE
RUNNING
ABORT
SP2
OUTLIM
IDFAIL
LOW PV
Same as Loop 1.
UDC3500 Universal Digital Controller Product Manual
Parameter
Definition
ACCUTUNE ERROR STATUS—When an error is
detected in the Accutune process, an error prompt
will appear.
NONE—No errors occurred during last Accutune
procedure.
RUNNING—An Accutune process is still active
checking process gain, even though "T" is not lit. It
does not affect keyboard operation.
CURRENT ACCUTUNE PROCESS ABORTED—
Caused by one of the following conditions:
• changing to manual mode
• input detected
• heat region of output but a cool output was
calculated, or vice versa
• SP was changed while PV (error) tune was in
process
SP2—LSP2 not configured or a Setpoint other than
LSP1 or LSP2 is in use.
OUTPUT LIMIT REACHED (HIGH OR LOW)—
Applies only to SP or SP+PV tuning. Output
insufficient to get to SP value.
ATTENTION This error will cause the controller to
switch from Automatic to Manual Mode. The output
is then set to the value present at the beginning of
the ACCUTUNE process.
PROCESS IDENTIFICATION PROCESS FAILED—
Applies only to SP or SP+PV tuning. An illegal value
for Gain, Rate or Reset was calculated.
LOW PV—Applies only to SP or SP+PV tuning. PV
did not change sufficiently or the PV has increased
by more than 4% but Deadtime was not determined.
ACCUTUNE ERROR STATUS FOR LOOP 2
10/05