2 Pipe 2 Position Valve with DA-T Low Limit v51 - Johnson Controls - Metasys - LIT-12011147 - Software Application - Controller Configuration Tool - 15.0

Controller Tool Help

Johnson Controls
Product name
Controller Configuration Tool
Document type
User Guide
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Revision date
Important: As of Release 5.1, the 2 Pipe 2 Position Valve with DA-T Low Limit v51 module replaces the 2 Pipe 2 Position Valve with DA-T Low Limit v50 module.

This module controls a single two positional source that is dynamically switched from a heating (winter) to a cooling (summer) mode. It also supports a discharge low limit for the heating mode. The module accepts as inputs a mode, a process variable, a low limit process variable, setpoints, and configuration information. The module outputs the representative percent commands, control status, and Multistage Output configuration information. The Percent Cmd is typically passed to the MSC module, which in turn translates the percent value into pulses of the binary output. This module also incorporates tracking the overridden value of the actual output object (AO, PAO). The module resets the PIDs to default tuning parameters if the Reset PID Tuning input is not Normal.

This module provides EWMA diagnostic values calculated by the PID. Controllers have the ability to collect data about their inputs, outputs, and internally calculated variables. Inside the controller, the EWMA minimizes memory requirements, reduces communication traffic, and provides an easy way to analyze collected data. See EWMA Diagnostics in the Commissioning a System section for more information.