Siemens Acvatix SAX Series Basic Documentation page 4

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3.2.4 Disposal .............................................................................................. 52
4 Functions and control ....................................................................... 53
4.1 3-position control ................................................................................. 53
4.1.1 Combination with RVD.. controller for direct domestic hot water
distribution by heat exchanger ............................................................. 55
4.2 Modulating control ............................................................................... 56
4.3 Function module AZX61.1 .................................................................... 57
4.3.1 Sequence control (signal adaptation) ................................................... 57
4.3.2 Changeover of acting direction ............................................................. 59
4.4 Positioning signal and flow characteristic selection ............................... 60
4.5 Acting direction and flow characteristic ................................................. 61
4.6 Position Feedback U ............................................................................ 61
4.7 Position control with ClosedPosition-Synchronisation ........................... 62
4.7.1 ClosedPosition-Synchronisation ........................................................... 62
4.8 Calibration ........................................................................................... 64
4.9 Signal priorities .................................................................................... 64
4.10 Detection of valve seat ......................................................................... 65
4.11 Detection of foreign bodies .................................................................. 65
4.12 Forced control Z .................................................................................. 66
4.13 Communicating actuators Modbus RTU ............................................... 67
4.13.1 Detection of valve seat ......................................................................... 67
4.13.2 Detection of foreign bodies .................................................................. 67
4.13.3 Calibration ........................................................................................... 68
4.13.4 Manual adjustment .............................................................................. 69
4.13.5 Parameters and function description .................................................... 69
4.14 Technical and mechanical design ......................................................... 72
4.14.1 Transmission of power ......................................................................... 72
4.14.2 Coupling .............................................................................................. 73
4.14.3 Manual adjuster ................................................................................... 73
4.14.4 Indicators ............................................................................................. 74
4.14.5 Electrical accessories .......................................................................... 75
4.14.6 Mechanical accessories ....................................................................... 76
5 Technical data .................................................................................... 77
6 Connection diagrams and dimensions ............................................. 80
6.1 Internal diagrams ................................................................................. 80
6.2 Connection terminals ........................................................................... 81
6.2.1 Actuators ............................................................................................. 81
6.2.2 Electrical accessories .......................................................................... 81
6.3 Connection diagrams ........................................................................... 82
6.4 Dimensions.......................................................................................... 84
6.4.1 Stroke actuators .................................................................................. 84
1)
SAX..U: 1.850 kg ................................................................................. 84
6.4.2 External Modbus converter .................................................................. 85
6.4.3 Rotary actuators .................................................................................. 86
7 Revision numbers .............................................................................. 87
8 Glossary ............................................................................................. 88
8.1 Symbols .............................................................................................. 88
8.2 Terms .................................................................................................. 88
Actuators SAX.., SAY.., SAV.., SAL.. for valves
Contents
CE1P4040en
2018-12-05