Honeywell UDC 3300 manual Single Setpoint Ramp, Configuring the setpoint ramp Procedure, SP Ramp

5.9 Single Setpoint Ramp

Configuring the setpoint ramp

Procedure

You can configure a single setpoint ramp to occur between the current local setpoint and a final local setpoint over a time interval of from 1 to 255 minutes. You can RUN or HOLD the ramp at any time.

ATTENTION The UDC 3300 has PV Hot Start functionality as standard feature. This means that at power-up Local Setpoint #1 is set to the current PV value and the Ramp, Rate, or Program then starts from this value.

Table 5-14 lists the procedure for configuring the Setpoint Ramp parameters. The procedure for SP Program is in Section 6 – Setpoint Programming Option.

Table 5-14 Procedure for Configuring a Setpoint Ramp

Step

1

Operation

Select

SP RAMP

Set Up Group

Press

SET UP

Action

until you see:

Upper Display

SET UP

Lower Display

SP RAMP

2

Select the Setpoint Ramp function

FUNCTION

L1/L2

until you see:

Upper Display

Lower Display

SP RAMP

DISABL— Disables SP Ramp ENABLE— Enables SP Ramp for Loop 1 ENABL2— Enables SP Ramp for Loop 2 ENAB12— Enables Sp Ramp for Loops 1 and 2

3

4

Enable Setpoint Ramp

Set the Ramp Time

FUNCTION

L1/L2

or

to enable the setpoint ramp function. Choose the loop(s) on which you want the ramp to operate.

ATTENTION You cannot change the current local setpoint if the setpoint ramp function is enabled. Make sure SP RATE is disabled.

until you see:

Upper Display

The ramp time in minutes

Lower Display

TIME MIN

to change the upper display value to the number of minutes in which you want the final setpoint to be reached.

Setting Range = 1 to 255 minutes

ATTENTION Entering “0” will imply an immediate step change to the final SP.

164 UDC 3300 Controller Product Manual 4/00