Configuration
3/07 UDC3500 Universal Digital Controller Product Manual 59
Table 3-6 SPRAMP Group Function Prompts
Function Prompt
Lower Display
Selections or
Range of Setting
Upper Display
Parameter
Definition
SP RAMP
SP Program must be
disabled for SP Ramp
prompts to appear
SINGLE SETPOINT RAMP—Make a selection to
enable or disable the setpoint ramp function. Make
sure you configure a ramp time and a final setpoint
value.
SP Programming must be disabled.
DISABLE
ENABLE
DISABLE SETPOINT RAMP—Disables the setpoint
ramp option.
ENABLE SETPOINT RAMP—Allows the single
setpoint ramp prompts to be shown.
TIME MIN
0 to 255 minutes
SETPOINT RAMP TIME—Enter the number of
minutes desired to reach the final setpoint. A ramp
time of “0” implies an immediate change of setpoint.
FINAL SP
Within setpoint limits
SETPOINT RAMP FINAL SETPOINT—Enter the
value desired for the final setpoint. The controller will
operate at the setpoint set here when ramp is ended.
ATTENTION If the ramp is on HOLD, the held
setpoint can be changed by the ▲ and ▼ keys.
However, the ramp time remaining and original ramp
rate is not changed. Therefore, when returning to
RUN mode, the setpoint will ramp at the same rate as
previous to the local setpoint change and will stop if
the final setpoint is reached before the time expires. If
the time expires before the final setpoint is reached, it
will jump to the final setpoint.
ATTENTION SP RAMP and SP RATE will cause the
SP portion of Accutune to abort. PV Tune will
continue to function normally. Ramp is placed into
HOLD while tuning (TUNE configuration).
HOTSTART
DISABLE
ENABLE
DISABLE—LSP1 is used as the initial ramp setpoint.
ENABLE—Current PV value is used as the initial
ramp setpoint.
SP RATE
SP Rate operates on
any LSP when both
SP Ramp and SP
Programming are not
active.
DISABLE
ENABLE
SETPOINT RATE—Lets you configure a specific rate
of change for any local setpoint change.
DISABLE SETPOINT RATE—Disables the setpoint
rate option.
ENABLE SETPOINT RATE—Allows the SP rate
feature.
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