ACS 255 User Manual
Chapter 4: Controls
4-1 Controller Descriptions
The DryPro dryer control system is designed to control all ACS cabinet, medium and large
dryers. These dryers have separate Process and regeneration blowers and up to four desiccant
beds.
dryers. These dryers have separate Process and regeneration blowers and up to four desiccant
beds.
The DryPro control system includes the following features:
• Customer configurable drying hopper identification.
• Enhanced diagnostics for quick troubleshooting.
• Support for up to 3 drying hoppers.
• Support for Compact Flash memory cards.
o
Save & restore dryer configurations easily.
o
Save and recall material process recipes.
o
Automatic Program upgrades with.
o
Optional data logging.
• Ethernet monitoring.
The dryer is available in two basic configurations—local I/O and remote I/O.
• Local I/O where the Process heater controls are integral to the dry air source.
o
Used for single drying hopper configurations.
o
All controls are mounted on the dryer.
• Remote I/O, for Central drying applications, where the Process heaters are separate
from the dry air source.
o
Used on systems with from 2 or 3 drying hoppers.
o
Drying hopper I/O is connected to the dryer controls using high speed
communications.
4-2 Operating the Dryer
To operate the dryer, access the Dryer Status screen and press the “Start” button.
The main air valves will find home position.
• If the left bed finished regeneration then the right bed will be placed into
regeneration and the left bed will be placed into Process.
• If the left bed did not finish regeneration then the left bed will be placed into
regeneration and the right bed will be placed into Process.
The Process blower(s) will start.
• When air flow is verified, all enabled drying hoppers heaters will begin
heating the process supply air to their respective set points.
• There is an adjustable time delay between the Process blowers starting and
the drying hoppers Process supply air heaters starting to allow the Process
supply air header to come up to operating pressure.
supply air header to come up to operating pressure.
1
The Process and regeneration systems start operation in parallel and run independently.
Controls
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