Burkert 8681 - Page 8

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16 ACCESSORIESFORBÜSDEVICES ..................................................................................................120
17 CABLINGEXAMPLES(BÜS/CANOPEN) .......................................................................................... 122
18 CONNECTION OF AN EXTERNAL INITIATOR ...................................................................................125
19 SPECIAL DESIGNS ............................................................................................................................127
19.1 Controlheadfordouble-actingactuators ..............................................................................127
19.1.1 Anomalies .....................................................................................................................127
19.1.2 Fluid diagram ...............................................................................................................127
19.1.3 Activation of a double-acting actuator .........................................................................127
19.2 Controlhead(AS-i)with2externalinitiators ..........................................................................128
19.2.1 Anomalies .....................................................................................................................128
19.2.2 Electrical installation and programming data ...............................................................128
20 POSITION MEASURING SYSTEM .....................................................................................................129
20.1 Settingthepositionmeasuringsystem(Teachprocedure) ....................................................130
20.2 Teachbuttons/Teachfunctions ............................................................................................131
20.2.1 Teach functions and Teach reset ..................................................................................131
20.2.2 AutomaticTeachfunctions(Autotune) .......................................................................... 132
20.2.3 SequenceoftheautomticTeachfunctions(Autotune) ................................................. 133
21 LED COLOUR ASSIGNMENTS ..........................................................................................................136
21.1 Displaymodi–overview .......................................................................................................... 136
21.1.1 DevicespecicLEDmode“8681ClassicMode” .........................................................138
21.1.2 NAMUR mode ...............................................................................................................139
21.1.3 Valve mode ...................................................................................................................140
21.1.4 Valve mode + Errors .....................................................................................................141
21.1.5 Valve mode + Errors + Warnings ..................................................................................142
21.1.6 Displaymode“Fixedcolour” ........................................................................................ 143
21.2 Flashingpattern&faultsignalling ........................................................................................... 143
21.2.1 Position feedback in normal operation .........................................................................143
21.2.2 Feedback in case of errors / warnings ..........................................................................144
21.2.3 Localisation function ..................................................................................................... 147
21.3 Signalpriorities ........................................................................................................................148
21.3.1 When several statuses overlap for one valve ..............................................................148
21.3.2 When position feedback overlaps ...............................................................................148
english
Control Head Type 8681