Allen-Bradley 1794-IE8H Dokumentacja Pobierz pdf (Strona 115)

Publication 1794-SG002D-EN-P - May 2012

Select a FLEX Ex I/O Power Supply 107

The total number of power supplies needed depends on the modules used and

the total system configuration. The following illustration shows how this

example may be configured.

1 2 ... 110 111 112 113 114 115 116 117 118 119 120 ... 135 136

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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