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Publication 1794-SG002D-EN-P - May 2012
48 Select FLEX I/O Modules
1794-IE8XOE4 8 Input/4 Output Analog Combination Module
The 1794-IE8XOE4 is a combination module with 8 inputs and 4 outputs.
Inputs can be configured individually for different modes, as can outputs. Inputs
accept signals from 2, 3, and 4 wire input sensors in the ranges of ±10V or
0… 20 mA. Outputs produce signals in the range of ±10V or 0…20 mA.
8 Input / 4 Output Analog Combination Module
Specification 1794-IE8XOE4
Calibration None required
Input conversion type Successive approximation
Input conversion rate 8 ms all channels
Input resolution 16 bit, 2’s complement
320 μV/cnt
0.641 μA/cnt
Data format 16 bits, 2’s complement
Step response to 63% of FS, input Current or voltage input: 1.3 s (0.09 s with Quick Step)
Step response to 63% of FS, output -70% 1st convert
96% 2nd convert
100% 3rd convert
Normal mode rejection ratio Voltage/current terminal:
-3 dB @ 0.05 Hz; -20 dB/decade
-52 dB @ 50 Hz
-54 dB @ 60 Hz
Voltage/current terminal with Quick Step:
-3 dB @ 1.5 Hz; -20 dB/decade
-29 dB @ 50 Hz
-31 dB @ 60 Hz
Accuracy
(1)
(1) Includes offset, gain, non-linearity and repeatability error terms.
Current input or output: 0.1% Full Scale @ 25 °C
Voltage input or output: 0.1% Full Scale @ 25 °C
Accuracy drift with temperature Current input or output: 0.004% Full Scale @ 25 °C
Voltage input or output: 0.004% Full Scale @ 25 °C
Input impedance
(2)
(2) If 24V DC is removed from the module, input resistance = 10 KΩ.
Current input: <100 Ω
Voltage input: >1 MΩ
Voltage input, overload, max 30V, single channel, continuous
Output resolution 16 bit, 2’s complement
320 μV/cnt
0.641 μA/cnt
Output conversion type Digital-to-analog converter
Output conversion rate Outputs: DAC
Current load on voltage output, max 3 mA
Resistive load on current output 0…750 Ω over full power supply range
Dimensions (HxWxD), approx 46 x 94 x 53 mm (1.8 x 3.7 x 2.1 in.)
94 x 94 x 69 mm (3.7 x 3.7 x 2.7 in.) installed
- 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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