Rockwell-automation 1746-NI8 SLC 500 Analog Input Modules User Manual Manuel d'utilisateur Page 76
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Appendix
A
Publication
17466.8 - April 1997
Specifications
This appendix lists the specifications for the 1746-NI8 Analog Input
Module.
Description Specification
Backplane Current Consumption
200 mA at 5V dc
100 mA at 24V dc
Backplane Power Consumption 3.4W maximum (1.0W @ 5V dc, 2.4W @ 24V dc)
Number of Channels 8 (backplane isolated)
I/O Chassis Location Any I/O module slot except slot 0
A/D Conversion Method Successive approximation, switched capacitor
Input Filtering Low pass digital filter with programmable filter frequencies
Normal Mode Rejection
(between [+] input and [] input)
Provided by lowpass filter
Common Mode Rejection
(between inputs and chassis ground)
Greater than or equal to 75 dB at DC
Greater than or equal to 100 dB at 50/60 Hz
Input Filter Frequencies
1 Hz
2 Hz
5 Hz
10 Hz
20 Hz
50 Hz
75 Hz
Calibration The module performs continuous autocalibration.
Isolation
50V dc continuous between the analog inputs and the backplane
530V ac and 750V dc pulse withstand for 1 second
CommonMode Voltage Range
±10.5V (21V maximum between any two terminals)
Description Specification
LED Indicators
9 green status indicators
one for each of 8 channels and one for module status
Module ID Code
Class 1 Interface: 3526
Class 3 Interface: 12726
Recommended Cable Belden #8761 or equivalent
Maximum Wire Size Two 14 AWG wires per terminal
Maximum Cable
Impedance
Voltage Source (with less than 10Ω impedance):
40Ω maximum loop impedance, for <1LSB error
Current Source (transmitter properly wired to its power supply):
250
Ω maximum loop impedance, to meet commonmode voltage requirements
Terminal Block Removable, AllenBradley spare part Catalog Number 1746RT25G
Electrical Specifications
Physical Specifications
- SLC 500t 1
- Input Module 1
- AllenBradley 1
- Important User 2
- Information 2
- Table of Contents 3
- Table of Contentsii 4
- Table of Contents iii 5
- Table of Contentsiv 6
- Who Should Use this 7
- Purpose of this Manual 7
- Contents of this Manual 8
- Related Documentation 9
- Common Techniques Used in 10
- AllenBradley Support 10
- Overview 11
- Hardware Features 12
- System Overview 13
- (shown for one channel) 14
- Quick Start 15
- Procedures 16
- sensor cable 17
- 1011 00000000 18
- Program the configuration 19
- 0000 00000000 20
- 1011 00000000000 21
- Installation and Wiring 22
- Module Location in Chassis 23
- Compliance to European 24
- Union Directives 24
- Module Installation and 25
- Module Installation Procedure 26
- Terminal Wiring 27
- Publication 28
- 17466.8 - April 1997 28
- Input Devices 30
- Preliminary Operating 32
- Considerations 32
- Class 1 and Class 3 33
- Interface 33
- Module Addressing 33
- Class 3 Memory Map 34
- O : 4 . 2 35
- I : 4 . 10 35
- Module Update Time 36
- Channel TurnOn, TurnOff 37
- Response to Slot Disabling 37
- Channel Filter Frequency 38
- Selection 38
- Channel Configuration, Data 42
- Channel Configuration 43
- Procedure 43
- Channel Data Word 46
- Scaling the 47
- Scaling Examples 49
- " TIP 49
- Channel Status Checking 52
- 10 V dc 53
- Input Type Status (Bits 0-2) 54
- Channel Status (Bit 11) 54
- Open Circuit Error (Bit 12) 55
- OverRange Error (Bit 13) 55
- UnderRange Error (Bit 14) 55
- Configuration Error (Bit 15) 55
- 1100 00110100 56
- Interfacing to the PID 58
- Instruction 58
- Monitoring Channel Status 59
- Bits (Class 3 Mode Only) 59
- Module Diagnostics and 60
- Troubleshooting 60
- LED Indicators 61
- Module Status LED (Green) 63
- Troubleshooting Flowchart 64
- Replacement Parts 65
- Contacting AllenBradley 65
- Application Examples 66
- Program Listing 68
- Data File 68
- Supplementary Example 69
- 1112131415 71
- 910 8 67450123 71
- Bit Number 71
- Specifications 76
- TTL:Chap 77
- +85°C (-40°F to +185°F) 77
- Configuration Worksheet 78
- Converting from 1746NI4 to 79
- 1746NI8 79
- 1100 01111000 81
- 1100 01100000 81
- Two's Complement Binary 82
- Glossary 84
- GlossaryG–2 85
- Glossary G–3 86
- Worldwide representation 91
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