Application
Table Of Contents
3
Siemens Industry, Inc. Application Note, App 2521 140-1218
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
Heating/Cooling Switchover................................................................................................. 6
Day and Night Modes .......................................................................................................... 6
Night Mode Override Switch ................................................................................................ 7
Control Loops ...................................................................................................................... 7
Calibration ............................................................................................................................ 9
Fail Mode Operation .......................................................................................................... 10
Performing the Automated Fault Detection and Diagnostics ............................................. 10
Application Notes ............................................................................................................... 12
Wiring Diagram .................................................................................................................. 13
Application 2521 Point Database ................................................................................... 14