Configuring secondary PID loops - Triatek - LIT-12014409 - HMS1655 Fume Hood Controller

HMS1655 Fume Hood Controller User Guide

Product name
HMS1655 Fume Hood Controller
Document type
User Guide
Document number
Revision date
Product status

About this task

When you configure the HMS1655 to use any of the secondary analog outputs in PID mode, the constants that determine the performance and characteristics of the closed-loop control scheme are specified with the corresponding option on the PID Loop Setup menu.


  1. To specify the proportional, integral, and derivative constants used by the closed-loop control scheme for the corresponding analog output, click one of the secondary PID loops from the PID Loop Setup menu to open the PID Loop x Settings configuration popup menu.
  2. You can adjust the three dimensionless PID constants from 0 to 100 with the three sliders on the configuration screen.
  3. See the Alarms Setup menu and the configuration of the alarm resources on the HMS1655 for more information.