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4/00 UDC 3300 Process Controller Product Manual 121
Lower Display
Prompt
Upper Display
Range of Setting
or Selection
Parameter
Definition
AM SP LAST MODE/LAST SETPOINT used before power down.
AM LSP LAST MODE/LAST LOCAL SETPOINT on power down.
PWR OUT
For Three Position
Step Control Only
(Note 3)
LAST
F’SAFE
TPSC (Three-Position Step Control) OUTPUT START-
UP MODE—This selection determines what position the
motor will be in when powered up or in the failsafe
position.
LAST OUTPUT—At power-up in automatic mode, the
motor position will be the last one prior to power down.
When the unit goes into FAILSAFE, it will stay in
automatic mode; motor will not be driven to the configured
failsafe position.
FAILSAFE OUTPUT—At power-up in manual mode, the
motor will be driven to either the 0 % or 100 % output
position, whichever is selected at prompt FAILSAFE. For
Burnout/None, when the unit goes into FAILSAFE, it will
go to manual mode; motor will be driven to the configured
failsafe position.
SP HiLIM
0 to 100 % of PV span in
engineering units
SETPOINT HIGH LIMIT*—This selection prevents the
local and remote setpoints from going above the value
selected here. The setting must be equal or less than the
upper range of the inputs.
SP LoLIM
0 to 100 % of PV span in
engineering units
SET POINT LOW LIMIT*—This selection prevents the
local and remote setpoints from going below the value
selected here. The setting must be equal or greater than
the lower range of the inputs.
ACTION
CONTROL OUTPUT DIRECTION—Select direct or
reverse acting.
DIRECT DIRECT ACTING CONTROL—The controller’s output
increases as the process variable increases.
REVRSE REVERSE ACTING CONTROL—The controller’s output
decreases as the process variable increases.
*The local setpoint will automatically adjust itself to be within the setpoint limit range. For example, if SP = 1500 and
the SP HiLIM is changed to 1200, the new local setpoint will be 1200.
OUT RATE
ENABLE
DISABL
OUTPUT CHANGE RATE—Enables or disables the
Output Change Rate. The maximum rate is set at prompt
PCT/M UP or PCT/M DN. Only available for PID-A, PID-B,
PD+MR control algorithms.
ENABLE—Allows output rate.
DISABLE—Disables output rate.
PCT/M UP
0 to 9999 % per minute OUTPUT RATE UP VALUE—This selection limits the rate
at which the output can change upward. Enter a value in
percent per minute. Appears only if OUT RATE is enabled.
“0” means no output rate applied.
PCT/M DN
0 to 9999 % per minute OUTPUT RATE DOWN VALUE—This selection limits the
rate at which the output can change downward. Enter a
value in percent per minute. Appears only if OUT RATE is
enabled. “0” means no output rate.
OUTHiLIM
–5.0 to 105 % of output HIGH OUTPUT LIMIT—This is the highest value of output
beyond which you do not want the controller automatic
output to exceed. Use 0 % to 100 % for digital output type.
Use –5 % to 105 % for current position output.