Allen-Bradley 1794-IE8H Especificaciones Pagina 102
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Publication 1794-SG002D-EN-P - May 2012
94 Select FLEX Ex I/O Modules
1797-IRT8 8 Point 16-bit Non-isolated RTD Thermocouple/mV
Input Module
• input channels referenced to a single common
–RTD mode
– RTD types Pt100, Pt200, Ni100, Ni200, Ni120, Cu10
– 2-, 3-, and 4-wire connection
– sensor lead breakage and short circuit detection all 4 leads
– measuring resistance 0…500 Ω
– accuracy: 0.1% of span at 20 °C, filter cutoff < 1 Hz
•mV mode
– input voltage -40…100 mV differential sensing
– sensor breakage detection
•thermocouple mode
– types B, E, J, K, TXK/XK (L), N, R, S, T
–cold junction compensation (CJC)
– external reference junction (programmable)
– sensor breakage detection
– accuracy: 0.1% of span, filter cutoff < 1 Hz
–accuracy of CJC: ± 1 C/K
Schematic Drawing of the 1797-IRT8 Module
8 Point 16-bit Non-isolated RTD Thermocouple/mV Input Module
Specification 1797-IRT8
Input type Suitable for Pt 100, Pt200, Ni 100, Ni120, Ni200, Cu10
RTD, Thermocouple Type B, E, J, K, N, R, S, T, TXK/XK(L)
Configuration via internal bus
- Bulletin 1794 and 1797 1
- 1794-SG002D-EN-P 1
- Important User Information 2
- Table of Contents 3
- Table of Contents v 5
- Section 3.1 6
- Section 4.1 6
- Summary of Changes 7
- New and Updated 7
- Information 7
- 1794 FLEX I/O Overview 9
- General FLEX I/O and 11
- FLEX I/O XT Specifications 11
- 1794 FLEX I/O XT Overview 11
- Specify a FLEX I/O or 13
- FLEX I/O XT System 13
- Step 1 – Select: 15
- CIP Network Infrastructure 15
- Select a Network 16
- Device-Level Ring Topology 17
- ControlNet Network 18
- DeviceNet Network 19
- DNet In DNet Out 20
- Other Network Communication 21
- Other Networks – PROFIBUS DP 22
- Select FLEX I/O Modules 23
- Digital I/O Module Summary 24
- Digital Modules 26
- Derating Curve 27
- Modules Specifications 28
- 1794-IM8 Derating Curve 29
- Digital AC Output Comparison 29
- 1794-OM8 Derating Curve 31
- Digital DC Input Comparison 31
- 1794-IB32 Derating Curve 33
- 1794-IC16 Derating Curve 33
- Digital DC Output Comparison 34
- 1794-OB16P Derating Curve 36
- Surge Current — A 37
- 1794-IB16D Derating Curves 39
- FLEX I/O Analog 43
- Thermocouple and RTD 43
- Analog I/O Module Summary 44
- Analog 12 Input Module 47
- IMPORTANT 48
- Isolated Analog Input Modules 48
- 1794-IR8 RTD Input Module 51
- 1794-IR8 Derating Curve 52
- Thermocouple/mV Input Module 54
- = Safe operating area 55
- Combination Modules 57
- Analog Combination Module 58
- Analog Output Comparison 59
- Analog 4 Input Modules 60
- Analog 12 Output Module 62
- FLEX I/O Counter Modules 66
- 24V DC Input Frequency Module 68
- 2 Input Pulse Counter Module 71
- 4 Input Pulse Counter Module 72
- 1794-PS3 AC/DC 77
- 1794-PS13 AC/DC 77
- About the FLEX Ex I/O Systems 79
- FLEX Ex Typical 81
- Configurations 81
- Entity-Based Architecture 83
- Hazardous Area 83
- Designation 83
- Specify a FLEX Ex System 86
- 1797-BCNR Coax Barrier Module 90
- Select FLEX Ex I/O Modules 95
- (1) 1 ms default selectable 97
- (2) 1 ms default selectable 97
- Analog Modules 99
- Module Specifications 100
- Input Module 102
- HART Interface Modules 103
- FLEX Ex I/O Analog 104
- Output Modules 104
- Counter I/O Module 106
- Step 3 – Select: 111
- Terminal Base Wiring 111
- Diagrams 111
- Step 4 – Select: 113
- E Type Power Supply 114
- N Type Power Supply 114
- Understanding System Planning 114
- Assigning Power Supplies 116
- Hardened conduit 117
- Type of Power Input 118
- Mount the FLEX System 121
- Select Optional Accessories 123
- 1492-EA35 DIN Rail Locks 124
- 1794-LBL FLEX I/O Label Kit 124
- 1794-CJC2 124
- Step 5 – Select: 125
- ControlNet Ex Taps 126
- 1786-RG6 Coax Trunk Cable 127
- Related Documentation 129
- FLEX Ex I/O 133
- For More Information 133
- Rockwell Automation Support 136
- Documentation Feedback 136
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