Emerson Process Management 1500 manual 3 Filling control options continued

Configuring the Filling and Dosing Application

Table 7-3Filling control options continued

Control option	Default	Description
Purge Time	1.00000 sec	Used only if Purge Mode is set to Auto.
		Enter the purge duration, in seconds. When Purge Time has elapsed, the purge
		(secondary) valve will be closed automatically.
AOC Algorithm	Underfill	Select the type of overshoot compensation to be performed:
		• Underfill – The actual quantity delivered will never exceed the target quantity.
		• Overfill – The actual quantity delivered will never be less than the target
		quantity.
		• Fixed – The valve will close at the point defined by the target quantity minus
		the Fixed Overshoot Comp parameter.
		Underfill and Overfill are available only if AOC is enabled.
		Fixed is available only if AOC is disabled.
AOC Window	10	For standard AOC calibration, specify the maximum number of fills that will be
Length		run during calibration.
		For rolling AOC calibration, specify the number of fills that will be used to
		calculate AOC.
Fixed Overshoot	0.00000	Used only if AOC is disabled and AOC Algorithm is set to Fixed.
Comp		Enter the value to be subtracted from the target quantity to determine the point
		at which the valve will close. Enter the value in mass or volume units, as
		appropriate to the configured flow source.

7.4.3Valve control parameters

The valve control parameters are used to open and close the valves at particular points in the fill process.

•Valve control parameters for two-stage discrete filling are listed and defined in Table 7-4.

•Valve control parameters for three-position analog filling are listed and defined in Table 7-5.

Note: Valve control parameters are not used for one-stage discrete filling. In one-stage discrete filling, the valve opens when the fill is started, and closes when the fill target is reached.

Using the Transmitter

Optional Configuration

Filler Configuration

Using the Filler

Configuration and Use Manual 61