Spray Dryer Sequence Automation

Overview

Infra Engineering was engaged to design, implement, and commission automated sequences for a spray dryer at a pharmaceutical excipient manufacturer, integrating the work with the plant's existing Compact Logix PLC and ArchestrA HMI. The scope includes an automated startup sequence with equipment interlocks, permissives, and ramp-up logic; an automated shutdown sequence for safe equipment sequencing and process isolation; and control logic for turning water flow on and off, including valve actuation and interlocks. Operator interface updates support the automated sequences and manual override. The sequences are being developed to follow the site's approved standard operating procedure and to support site acceptance testing under applicable cGMP requirements. The startup program has been downloaded into the spray dryer controller with no errors, and the Managed InTouch application has been deployed to the spray dryer HMI. ArchestrA sequencing objects are in place to host the startup graphics, with remaining configuration and on-site SAT still ahead.