Rockwell-automation 1769-OF4 Compact Analog Output Module User Manual Page 21
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Publication 1769-UM020A-EN-P - December 2009 21
Installation and Wiring Chapter 2
System Wiring Guidelines
Consider the following when wiring your system:
• All module commons (ANLG Com) are connected in the analog
module.
• The analog common (ANLG Com) is not connected to earth
ground inside the module.
• Channels are not isolated from each other.
• For optimum accuracy, limit overall cable impedance by
keeping your cable as short as possible. Locate the I/O system
as close to your sensors or actuators as your application will
permit.
• Use Belden 8761, or equivalent, shielded wire.
• Under normal conditions, the drain wire and shield junction
must be connected to earth ground via a panel or DIN-rail
mounting screw at the analog I/O module end.
(1)
• Keep shield connection to ground as short as possible.
• Voltage outputs (Vout 0+…Vout 3+) of the 1769-OF4 module are
referenced to ANLG Com. Load resistance for a voltage output
channel must be equal to or greater than 1 kΩ .
• Current outputs (Iout 0+…Iout 3+) of the 1769-OF4 module
source current that returns to ANLG Com. Load resistance for a
current output channel must remain between 0 and 600 Ω .
(1) In environments where high-frequency noise may be present, it may be necessary to directly ground cable
shields to earth at the module end and via a 0.01 µF, 2000V capacitor at the sensor end.
- Catalog Number 1
- 1769-OF4 1
- User Manual 1
- Important User Information 2
- Table of Contents 3
- Chapter 4 4
- Module Diagnostics and 4
- Troubleshooting 4
- About This Publication 7
- Who Should Use This 7
- Publication 7
- Additional Resources 8
- Overview 9
- Chapter 1 Overview 10
- System Overview 11
- Module Operation 11
- Installation and Wiring 13
- ATTENTION 14
- Reduce Noise 15
- Removing Power 15
- Assemble the Compact I/O 16
- Mounting the Module 17
- 132 mm (5.197 in.) 18
- 122.6 mm 18
- (4.826 in.) 18
- Replace a Single Module 19
- Within a System 19
- Grounding the Module 20
- System Wiring Guidelines 21
- Label the Terminals 23
- Remove the Finger-safe 23
- Terminal Block 23
- Wire the Finger-safe 24
- Wire the Modules 25
- Terminal Layout 26
- Wiring Analog Outputs 27
- Configuration 29
- Input Image 30
- Output Image 30
- Configuration File 30
- Input Data File 31
- Output Data File 32
- Configuration Data File 33
- Channel Configuration 34
- Enable/Disable Channel (EC) 35
- Program Mode (PM) 35
- Program Value 35
- IMPORTANT 36
- Clamping (limiting) 37
- Output Ramping 38
- Type/Range Selection 40
- Data Format Selection 40
- Engineering Units 41
- Scaled-for-PID 41
- Percent Range 41
- Introduction 43
- Safety Considerations 43
- Stand Clear of the Machine 44
- Program Alteration 44
- Safety Circuits 44
- Power Cycle Diagnostics 45
- Channel Diagnostics 45
- Non-critical versus Critical 45
- Module Errors 45
- Module Error Definition 46
- Error Codes 47
- Invalid Output Range Selected 48
- Module Inhibit Function 50
- Contacting Rockwell 50
- Automation 50
- Specifications 51
- Output Specifications – 52
- Certifications – 1769-OF4 53
- Replacement Parts 53
- MicroLogix 1500 Controller 55
- Module Output Image 56
- Module Configuration File 56
- Configure Analog I/O 57
- Modules in a 57
- MicroLogix 1500 System 57
- Appendix 61
- Add the Module to Your 61
- Profile 62
- 6. Click OK 62
- Configure Each I/O Module 64
- Positive Decimal Values 65
- Negative Decimal Values 66
- Glossary 67
- Ideal Transfer 68
- Actual Transfer 68
- Function 68
- Rockwell Automation Support 76
- Documentation Feedback 76
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