Honeywell UDC3200 manual SP Ramp Set Up Group

3.4 SP Ramp Set Up Group

Function	Selections or
Prompt	Range of Setting
Lower Display	Upper Display
SP RAMP
SP Program
must be
disabled for SP
Ramp prompts	DISABLE
to appear
	ENABLE
TIME MIN	0 to 255 minutes
FINAL SP	Within setpoint
	limits

HOTSTART DISABLE

ENABLE

Parameter Definition

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 SETPOINT RAMP—Disables the setpoint ramp option.

ENABLE SETPOINT RAMP—Allows the single setpoint ramp prompts to be shown.

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.

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).

DISABLE—LSP1 is used as the initial ramp setpoint.

ENABLE—Current PV value is used as the initial ramp setpoint.

SP RATE

DISABLE

ENABLE

EU/HR UP	0 to 9999 in
	engineering units
	per hour

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.

SP Rate operates only when both SP Ramp and SP Programing are in HOLD mode or when both SP Ramp and SP Programming are disabled.

RATE UP—Rate up value. When making a setpoint change, this is the rate at which the controller will change from the original setpoint up to the new one. The ramping (current) setpoint can be viewed as SPn in the lower display.

Entering a 0 will imply an immediate step change in Setpoint (i.e., no rate applies).

04/08 UDC3200 Universal Digital Controller Operator Manual 29