B09_-_Attachment_5_-_Canyon_WWTP_PLC_I-O_REGISTER_0001.pdf

This document is an Input/Output (I/O) List for the Canyon Wastewater Treatment Plant (WWTP) PLC Upgrade, Federal Supply Schedule (FTS) #3275, dated August 11, 2011.

The I/O List catalogs the existing programmable logic controller (PLC) inputs and outputs for the Canyon WWTP upgrade project. The list is organized by module type and includes digital inputs, digital outputs, analog inputs, and analog outputs across multiple racks and slots. Digital inputs are configured in modules D2-16NA and D2-12TA, encompassing 64 total inputs that monitor equipment status such as aerator running conditions, pump starts, valve positions, alarm states, and facility level switches. These inputs track operational parameters including headworks influent flow, filter levels, clarifier status, backwash operations, and chemical feed systems for lagoons, clarifiers, and filters. Digital outputs span modules D2-12TA and F2-08TRS with 73 outputs controlling equipment such as backwash pump starts, flocculator operation, rapid mixer functions, plant run enable commands, and various alarm signals. Analog inputs utilize modules F2-08AD-1 for measuring flow rates (ranging from 0-900 GPM for headworks to 0-1620 GPM for backwash), level measurements (0-6.7 feet for filters and lagoons), and water quality parameters including head loss and turbidity readings (0-12.0 feet and 0-100 NTU respectively). Analog outputs from module F2-08DA-1 control valve positions for influent flow, level control, and backwash flow operations. The document includes spare capacity designations throughout the I/O allocation for future expansion and system enhancements.