Emerson Series 3000 MVD User Manual

90

Batch control functions can be performed in four ways:

•

By using the function buttons on the display (see Section 18.3)

•

By assigning a discrete input to a batch control function

•

By assigning a discrete event to a batch control function

•

By using digital communications (e.g., ProLink II)

Table 11-4 lists the batch control functions, and Table 11-5 describes how the batch responds to 
changes in discrete inputs or discrete events. To assign a discrete input or discrete event to perform a 
batch control function:

1. Select the batch control function to be performed.

2. Specify the discrete input or discrete event that will perform the batch control function.

Note: You can assign one or more actions to a single discrete input or discrete event. All assigned 
actions that are compatible with the current batch state will be performed, and all others, except for 
print commands, will be discarded. To assign flowmeter zero or a totalizer control function to a 
discrete input, discrete event, or batch event, see Section 7.3.5. To assign a print function to a discrete 
input or discrete event, see Chapter 15.

Configure presets by percent of target under the following conditions:

•

The target is 200 kilograms

•

The primary valve opens at the start of the batch and closes when 
180 kilograms have been delivered

•

The secondary valve opens when 100 kilograms have been 
delivered

•

The end warning occurs when 160 kilograms have been delivered

Since 0.90 equals 90%, enter a Close Primary value of 90.

Since 0.50 equals 50%, enter an Open Secondary value of 50.

Since 0.80 equals 80%, enter an End Warning value of 80.

Close Primary

180 kilograms
200 kilograms

-------------------------------------

0.90

=

=

Open Secondary

100 kilograms
200 kilograms

-------------------------------------

0.50

=

=

End Warning

160 kilograms
200 kilograms

-------------------------------------

0.80

=

=