Rockwell-automation 1794-IJ2XT FLEX I/O Frequency Input Modules User M Manual de usuario Pagina 61
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35 Publication 1794-6.5.11 - September 2011
Chapter
5
Troubleshoot the Module
Overview
This chapter provides a description of the different status indicators for the
frequency input module to help you troubleshoot.
Status Indicators
The module has indicators for the following:
• Frequency and Gate Inputs
• Frequency and Gate Wire-Off Faults
•Alarm Outputs
When an input indicator (yellow) is lighted, it indicates that a valid signal
(active high or active low) is present at one of the input terminals.
When wire-off detection is enabled, and a wire-off fault is detected (24V DC
IEC 1+ input terminal only), a fault indicator (red) flashes at a rate of 1 Hz to
signal a fault condition. A wire-off fault signal is also sent to the backplane. A
flashing red fault indication means a valid wire-off condition for a 24V DC
IEC 1+ Input or a 24V DC contact switch input with a shunt resistor.
Topic Page
Status Indicators 35
Diagnostics 36
Diagnostic Bits in Word 5 of the BTR File 37
FREQ GATE
OK
0
FREQUENCY INPUT 2 CHANNEL
1
1794-IJ2
F0F
FREQ GATE
1F 1F
OUT
0
OUT
1
A = Input indicator
B = Insertable label for writing individual I/O assignments
C = Wire-off fault indicator
D = Output indicator
E = Power/status indicator – indicates power applied to module and status of module
A B C
D
E
45348
- User Manual 1
- Important User Information 2
- Summary of Changes 3
- New and Updated 3
- Information 3
- Table of Contents 5
- Who Should Use This 7
- Purpose of the Manual 7
- About the Vocabulary 7
- Related Documentation 8
- Preface xi 9
- Common Techniques Used 10
- Overview 11
- The FLEX System 11
- Type of Modules 12
- Usage of the Frequency 12
- Input Module 12
- The FLEX I/O Module in a 13
- Logix Control System 13
- 1794-IJ2 14
- Typical Applications 15
- Input Capabilities 16
- Output Capabilities 17
- How Frequency Is 18
- Calculated 18
- Sampling Time Extended 19
- Missing Pulse Multiplier 20
- Direction Detection 21
- Chapter Summary 22
- Before You Install 23
- Your Module 23
- Power Requirements 23
- Install the Module 24
- Mount on a Panel or Wall 26
- 1794-NM1 Mounting Kit 27
- Description Description 27
- IMPORTANT 28
- 1794-TB3G or 1794-TB3GK 31
- 1794-TB3GS 31
- 34...51 31
- 1794-TB3GS Terminal Base Unit 32
- ATTENTION 33
- Resolution and Accuracy 34
- Resolution % is defined as: 35
- Accuracy % is defined as: 35
- RSLogix 5000 Software 39
- Select New Module 40
- FLEX I/O Module 45
- Map Data for the Module 46
- 47
- Word Bit 50
- Troubleshoot the Module 61
- Diagnostics 62
- Specifications 65
- 56 Specifications 66
- Specifications 57 67
- 58 Specifications 68
- Appendix 69
- EDS Installation 70
- Schematics 71
- Output Circuits 72
- 64 Schematics 74
- Enter Block Transfer 75
- Instructions 75
- PLC-2 Family Processor 76
- PLC-3 Family Processor 76
- PLC-5 Family Processor 77
- PLC-5/250 Family Processor 78
- Numerics 81
- 72 Index 82
- Index 73 83
- 74 Index 84
- Index 75 85
- 76 Index 86
- Rockwell Automation Support 87
- Documentation Feedback 87
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