ABB AW400 Series Instruction Manual page 4

5 FUNCTIONALITY .................................................................................................................................... 35
5.1 Transmitter (AW401) ....................................................................................................................... 35
5.2 Controller (AW402).......................................................................................................................... 36
5.2.1 General description..................................................................................................................... 36
5.2.2 Controller's Parameters............................................................................................................... 36
5.2.2.1 PID Parameters ................................................................................................................. 38
5.2.2.2 Feed Forward (FF) Configuration......................................................................................... 39
5.2.2.3 Sampling and/or Flow Pacing Controller............................................................................... 39
5.2.2.4 Error Squared Controller (pH Applications)........................................................................... 40
5.2.2.5 Contacts Output Controller.................................................................................................. 40
5.2.3 Standard Controller..................................................................................................................... 41
5.2.3.1 Std Controller Display......................................................................................................... 41
5.2.3.2 Std Controller Analog Output assignment............................................................................. 42
5.2.3.3 Std Controller Digital Input assignment ................................................................................ 42
5.2.3.4 Std Controller Digital Output assignment.............................................................................. 43
6 CALIBRATION.................................................................................................................................... 44
6.1 Calibration Procedure...................................................................................................................... 44
6.1.1 Calibration Menu ........................................................................................................................ 44
6.1.2 Calibration Menu Flow Chart........................................................................................................ 45
6.1.3 pH Sensor Calibration ................................................................................................................. 45
6.1.3.1 Double point calibration ...................................................................................................... 45
6.1.3.2 Single point calibration (S.P.C.)........................................................................................... 46
6.1.4 ORP Sensor Calibration .............................................................................................................. 47
6.1.4.1 "OXIDATION potential with NEGATIVE values" arrangement................................................. 48
6.1.4.2 "OXIDATION potential with POSITIVE values" arrangement .................................................. 48
6.1.5 Chlorine / Chlorine Dioxide / Ozone.............................................................................................. 49
7 START UP .............................................................................................................................................. 51
7.1 Preliminary operations..................................................................................................................... 51
7.1.1 Getting started............................................................................................................................ 51
7.1.2 Personalization of Parameters ..................................................................................................... 52
7.2 Controller PID tuning ....................................................................................................................... 52
8 MAINTENANCE....................................................................................................................................... 53
8.1 Periodical operations....................................................................................................................... 53
8.1.1 Automatic sensitivity check during dual point calibration................................................................. 53
8.1.2 Sensor signal check.................................................................................................................... 53
9 ERROR MESSAGES & TROUBLESHOOTING .......................................................................................... 54
9.1 Messages....................................................................................................................................... 54
9.1.1 Operation messages................................................................................................................... 54
9.1.2 Error messages .......................................................................................................................... 54
9.1.3 Alarms page............................................................................................................................... 55
10 SERIAL COMMUNICATION ..................................................................................................................... 56
10.1 Standard of Communications ........................................................................................................... 56
10.1.1 Software characteristics .......................................................................................................... 56
10.1.2 Communication Protocol ......................................................................................................... 57
10.1.3 Message Types and Commands Description ............................................................................ 58
10.2 Communication Transaction Examples ............................................................................................. 59
10.2.1 Transaction A Example........................................................................................................... 59
10.2.2 Transaction B Example........................................................................................................... 59
10.3 Serial link signal connection............................................................................................................. 60
10.4 Data-link Terminator........................................................................................................................ 61
10.5 AW400 Memory Map....................................................................................................................... 62
11 APPENDICES ......................................................................................................................................... 65
11.1 EC Declaration................................................................................................................................ 65
12 Spare Parts ............................................................................................................................................. 66
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