ProtEX-MAX PD8-6210 Explosion-Proof Analog Input Batch Controller
Instruction Manual
55
Manual Batch Control
The manual batch control feature is used for batch
processes where each batch must be started by the
operator. The following diagrams demonstrate a
typical manual batch operation with an optional
hazardous area-approved remote control station. The
batch could also be controlled using the through-glass
buttons on the controller.
Manual Batch Control Operation
1.
System Setup
Both valves are closed with an empty barrel
in place. The batched total is displayed in the
main display, the preset is selected for the
second display.
2.
Batch Start
The START button is pressed. Both valves
open. The barrel begins to fill.
3.
Preclose Valve
When the batch total reaches a value of
50.00 (Preset [55.00]
– Pre-close [5.00]) the
full-flow valve closes. The fill rate of the tank
slows as a result.
4.
Completed Batch
When the batch is complete, the restricted-flow
valve closes. If overrun occurs, then the next
batch will adjust for this offset amount to
maintain accuracy.
5.
Change Preset
After placing a new, empty barrel, a new
preset fill amount may be selected with the
Batch key, while the process is stopped.
6.
Begin New Batch
The new batch begins when the START
button is pressed, causing both relays to
activate and both valves to open.
