User manual

Berghof Automationstechnik QAIO 16/4-x
.doc 2D0172002ZD00.doc 5
Contents
1. GENERAL INSTRUCTIONS....................................................................................... 7
1.1. Hazard Categories and Indications ......................................................................................................7
1.2. Qualified users .......................................................................................................................................7
1.3. Use as Prescribed ..................................................................................................................................8
2. ANALOG I/O EXPANSION MODULE ........................................................................ 9
2.1. Overview .................................................................................................................................................9
2.2. Technical data ......................................................................................................................................10
2.3. Block circuit diagram...........................................................................................................................12
2.4. Module diagram and connection assignment...................................................................................13
2.5. Indicators, diagnostics ........................................................................................................................14
2.6. Shielding and measurement cabling..................................................................................................15
2.7. Operation of the module......................................................................................................................16
2.7.1. Fault currents .............................................................................................................................17
2.7.2. Commissioning ..........................................................................................................................17
2.7.3. Initialisation and module identification .......................................................................................17
2.7.4. Measuring ..................................................................................................................................18
2.7.5. Sensor failure.............................................................................................................................18
2.7.6. Connection of sensors/actuators ...............................................................................................19
2.8. Analog I/O channels.............................................................................................................................20
2.8.1. Analog input channels................................................................................................................20
Voltage input (basic circuit diagram)..........................................................................................20
2.8.2. Sensor connection, examples....................................................................................................21
Floating sensors.........................................................................................................................21
Potential-afflicted sensors with auxiliary power connection.......................................................21
Sensor connection using internal module reference voltage.....................................................21
2.8.3. Analog output channels .............................................................................................................22
Voltage output (basic circuit diagram) .......................................................................................22
2.9. Reference voltage source....................................................................................................................23