Siemens SIMATIC ET 200AL, System Manual

Page: 2037 / 2255

Table of contents
Analog value processing
6
Function Manual, 06/2014, A5E03461439-AC
4 Connecting transducers ........................................................................................................................ 65
4.1
Overview ..................................................................................................................................... 65
4.2 Wiring analog inputs with MANA connection .............................................................................. 67
4.3 Wiring analog inputs without MANA connection ......................................................................... 69
4.4 Wiring voltage transducers.......................................................................................................... 71
4.5 Wiring current transducers .......................................................................................................... 72
4.6 Wiring thermal resistors and resistors ......................................................................................... 74
4.7 Wiring thermocouples ................................................................................................................. 76
5 Thermocouples ..................................................................................................................................... 77
5.1
Selecting thermocouples ............................................................................................................. 77
5.2 Structure and operating principle of thermocouples ................................................................... 79
5.3 Compensation for the reference junction temperature ............................................................... 81
5.3.1 Overview ..................................................................................................................................... 81
5.3.2 Compensation with internal reference junction ........................................................................... 84
5.3.3 Compensation with reference channel of the module ................................................................. 86
5.3.4 Compensation, reference channel of Group 0 ............................................................................ 88
5.3.5 Compensation with fixed reference temperature ........................................................................ 91
5.3.6 Compensation by means of dynamic reference temperature ..................................................... 94
5.3.7 "None" or external compensation................................................................................................ 98
5.3.8 Compensation type RTD (0) ..................................................................................................... 100
6 Wiring loads/actuators .......................................................................................................................... 103
6.1
Overview ................................................................................................................................... 103
6.2 Wiring loads/actuators ............................................................................................................... 104
7 Supported functions ............................................................................................................................. 106
7.1
Calibrating analog modules....................................................................................................... 106
7.1.1 Overview ................................................................................................................................... 106
7.1.2 Calibrating analog modules....................................................................................................... 107
7.1.3 Canceling a calibration .............................................................................................................. 111
7.1.4 Resetting analog modules to factory settings ........................................................................... 112
8 High-speed analog modules ................................................................................................................. 113
8.1
Basics ........................................................................................................................................ 113
8.2 ST modules vs HS modules ...................................................................................................... 119
Index ................................................................................................................................................... 125