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During the heat stage of the batch cycle, a cascade temperature loop is used to control temperature. At the
time the sequence enters the heating step, the setpoint of the master controller is ramped to the reaction
temperature; the master controller measures the product temperature while the slave measures jacket
temperature. At the cooling stage, the setpoint is ramped back to the cool setpoint.
Fill A
Fill B
TIC-201
TIC-202
Steam
Drain
Demonstration Guide
The MOD 30ML is performing the process simulation as well as the sequence control and temperature
cascade control. Once started, the batch cycle will progress automatically unless it is switched to manual
mode.
Operator Changes
The following operations may be done from the front panel displays:
Batch initialization
Recipe selection
Recipe parameter entry
Manual advance of sequence
Initial Conditions
Batch AUTO, OFF (Note: once the batch has been started, Line 2 will indicate the Time in Step for each
step. If the batch is put into manual mode, Line 2 will display Manual. The "time in step" timer does not
stop if the batch is put into manual. However, if you manually advance to another step, the step timer re-
starts).
RECIPE 1 selected
Temperature setpoint LOCAL
2
Level 0.0" H
O
Step OFF
REACTOR.DOC 11/8/99
Batch Reactor Demonstration
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