Rockwell-automation 1794-OB16D FLEX I/O Diagnostic Modules User Manual Uživatelský manuál Strana 107
- Strana / 132
- Tabulka s obsahem
- KNIHY
Hodnocené. / 5. Na základě hodnocení zákazníků
Publication 1794-UM061A-EN-P - July 2006
Interpret the Indicators 105
For 3-wire sensors:
• an open fault will be detected when an open occurs on either the
sensor-power wire, the sensor (-V) wire, or the high-current portion of
the input sensor field device.
• an open on the input-signal wire or low-current portion of the input
sensor field device will not be detected, and will be seen as an
off/inactive input sensor field device.
• a shorted circuit from the sensor-power wire to sensor common (-V) is
detected as short fault (no voltage at the sensor-power port).
• a shorted circuit from the sensor-power wire to the input-signal wire
cannot be detected. It will appear as an on/active input device.
• a shorted circuit from the input-signal wire to sensor common (-V), with
the input sensor field device in the off-state, cannot be detected. It will
appear as an off/inactive input sensor device.
• a shorted circuit from the input-signal wire to sensor common (-V), with
the input sensor field device in the on-state, is detected as a short fault if
the sensor field device can pass the sensor power short circuit current.
• a shorted 3-wire input sensor device may or may not be detected,
depending on which portion of the input sensor device is shorted.
• a shorted circuit to the DIN rail or chassis ground cannot be detected.
Diagnostic Functions for the 1794-IB16D
Each unused sensor port requires a dummy resistor to mask the channel
diagnostic function.
Open OFF or ON OFF Red Red Open wire
& Module
No current in Sensor Power terminal-
Missing sensor, cut Sensor Power or Input Signal wire
Short OFF OFF Red Red Short & Module Shorted Sensor Power/ Common
OFF ON OFF Yellow None Shorted Sensor Power/ Input Signal
OFF OFF OFF OFF None Shorted Input Signal/ Common
ON OFF Red Red Short & Module
Shorted Input Signal/ Common
1
Reverse
User
Power
OFF or ON OFF Red OFF Reverse & Module User power supply wiring is reversed
1
If sensor can pass Sensor Power short circuit current
Fault Device/Input State Indicators Error Bit
Status
Conditions
Field
Device
Input
Status
Module
Fault
Channel
Fault
Open OFF OFF Red Red Open wire
&
Module
No current in Sensor Power terminal-
Missing sensor, cut Sensor Power or
Common wire
OFF or ON OFF OFF OFF None Cut Input Signal wire
Short OFF OFF Red Red Short & Module Shorted Sensor Power/ Common
OFF ON OFF Yellow None Shorted Sensor Power/ Input Signal
OFF OFF OFF OFF None Shorted Input Signal/ Common
ON OFF Red Red Short & Module
Shorted Input Signal/ Common
1
Reverse User Power OFF or ON OFF Red OFF Reverse & Module User power supply wiring is reversed
1
If sensor can pass Sensor Power short circuit current
- FLEX I/O Diagnostic Modules 1
- Important User Information 2
- Table of Contents 3
- Table of Contents iv 4
- Appendix A 5
- Appendix B 5
- Digital Modules 5
- Table of Contents vi 6
- Purpose of This Manual 7
- Important Warnings and 7
- Cautions 7
- Hazardous Location approved 9
- Related Products and 10
- Documentation 10
- Preface 9 11
- 10 Preface 12
- Preface 11 13
- 12 Preface 14
- Overview 15
- Network Compatibility 16
- Output Module 18
- Base Units) 20
- Introduction 21
- About the 1794-IB16D 21
- Diagnostic Input Module 21
- Input Channels 0-15 22
- Diagnostic Fault Detection 23
- Indicator Status 25
- Information 25
- Module Limitations 26
- Unused Sensor Power Ports 27
- Configure Your Diagnostic 28
- Input Module 28
- About the 1794-OB16D 29
- Diagnostic Output Module 29
- (1794-TB3 shown) 30
- Module Protection 32
- Functions 32
- Indicator Status Information 33
- Configure Your Output 34
- Diagnostic Module 34
- Remote I/O Network 35
- Add a 1756-DHRIO Module 36
- ATTENTION 38
- Add a 1794 Remote Adapter 39
- Configure Digital Modules 42
- Create a Block Transfer 44
- (Read or Write) Message 44
- Instruction 44
- Ladder Logic Examples 48
- DeviceNet Network 49
- Bandwidth 50
- Determine the Address of 54
- DeviceNet Data 54
- Tally Memory 56
- Requirements 56
- Configuration 57
- Offline 57
- Set the Address of the 58
- Select a 61
- Communication Format 61
- Ownership 66
- Add Local and Remote 67
- ControlNet Modules 67
- Add Distributed I/O 68
- Download the Program to 70
- Configure the 1794-ACN15 71
- Schedule I/O Module 72
- Connections 72
- 6. Click OK 73
- File and Save 73
- Access Module Data via 77
- Change Configuration Data 79
- EtherNet/IP Network 83
- Set Up the Hardware 84
- Select a Requested Packet 84
- Interval (RPI) 84
- Select a Communication 85
- Select a Remote Adapter 89
- Access Distributed I/O 93
- General Information About 95
- IP Addresses 95
- Assigning Network 96
- Parameters via the 96
- BOOTP/DHCP Utility 96
- Using Other Methods to 99
- Assign Network 99
- Parameters 99
- Duplicate IP Address 102
- Detection 102
- Duplicate detection scenarios 103
- IP Address Swapping 104
- Interpret the Indicators 105
- Functional Details 106
- 1794-IB16D Diagnostic 106
- For 3-wire sensors: 107
- 1794-OB16D Diagnostic 109
- (20 KΩ + 110
- Appendix 111
- Find Your Module 111
- *Fuse on 1794-TBNF only 113
- * Fuse on 1794-TBNF only 114
- Flexbus Interface 117
- 1794-OW8 Relay Output Module 126
- 126 Index 128
- How Are We Doing? 129
- BUSINESS REPLY MAIL 130
- Rockwell Automation 132
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