Application

3
Siemens Industry, Inc. Application Note, App 2520 140-1217
2015-05-06
Table of Contents
Overview ............................................................................................................................. 4
Hardware Inputs .................................................................................................................. 5
Hardware Outputs ................................................................................................................ 5
Ordering Notes .................................................................................................................... 5
Sequence of Operation ..................................................................................................... 6
Control Temperature Setpoints ........................................................................................... 6
Day and Night Modes .......................................................................................................... 6
Night Mode Override Switch ................................................................................................ 6
Control Loops ...................................................................................................................... 7
Calibration ............................................................................................................................ 8
Fail Mode Operation ............................................................................................................ 8
Performing the Automated Fault Detection and Diagnostics ............................................... 8
Application Notes ............................................................................................................... 11
Wiring Diagram .................................................................................................................. 11
Application 2520 Point Database ................................................................................... 12