4.4 Setpoint Ramp/Rate/Programming Set Up Group

Introduction

SP Ramp/Rate/ Programming group prompts

This data deals with enabling Single Setpoint Ramp function or Setpoint Rate on one or both control loops. You can start or stop the single SP

Ramp by pressing the RUN/HOLD key.

A single setpoint ramp can be configured to occur between the current local setpoint and a final local setpoint over a time interval of from 1 to 255 minutes.

There is also a configurable rate of change for any local setpoint change.

ATTENTION SP RAMP and SP RATE will probably cause the SP portion of Accutune to abort. PV Tune will continue to function normally; however, during tuning (TUNE configuration) SP Ramp and Program are placed into HOLD until tuning completes.

Table 4-3 lists all the function prompts in the Setpoint Ramp/Rate Set Up group and their definitions.

Table 4-3 Setpoint Ramp/Rate Group Definitions

Lower Display

Prompt

SP RAMP*

*SP Ramp parameters (TIME MIN and FINAL SP) appear when Ramp is enabled and SP Rate and SP Programming are disabled.

TIME MIN

Upper Display

Range of Setting

or Selection

DISABL

ENABLE

ENABL2

ENAB12

0 to 255 minutes

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 Rate and SP Programming must be disabled.

DISABLE SETPOINT RAMP— Disables the setpoint ramp option.

ENABLE SETPOINT RAMP— Allows the single setpoint ramp prompts for Loop 1 to be shown.

ENABLE SETPOINT RAMP 2— Allows the single setpoint ramp to run in Loop 2.

ENABLE SETPOINT RAMP 12— Allows the single setpoint ramp to be run on Loop 1 and Loop 2.

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.

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Honeywell UDC 3300 manual Setpoint Ramp/Rate/Programming Set Up Group, Introduction SP Ramp/Rate/ Programming group prompts