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Rockwell Automation Publication 1766-UM001O-EN-P - September 2021
293
Appendix
H
System Loading and Heat Dissipation
System Loading
Calculations
The MicroLogix 1400 controller is designed to support up to any seven 1762
expansion I/O modules.
When you connect MicroLogix accessories and expansion I/O, an electrical
load is placed on the controller power supply. This section shows how to
calculate the load of your control system.
The following example is provided to illustrate system loading calculation.
The system calculation procedure accounts for the amount of 5V DC and 24V
DC current consumed by controller, expansion I/O, and user-supplied
equipment. Use the
System Loading Worksheet on page 294
controller configuration.
System Loading Example Calculations
Current Loading
Topic
Page
A maximum of seven 1762 I/O modules, in any combination, can be connected to a
MicroLogix 1400 controller. You can use this appendix to determine the power supply
load and heat dissipation for
your system.
Table 46 - Calculating the Current for Expansion I/O
Catalog Number
(1)
n
A
B
n x A
n x B
Number of Modules
Device Current Requirements (max)
Calculated Current
at 5V DC (mA)
at 24V DC (mA)
at 5V DC (mA)
at 24V DC (mA)
1762-IA8
2
50
0
100
0
1762-IF4
40
50
1762-IF2OF2
40
105
1762-IQ8
50
0
1762-IQ16
70
(2)
0
1762-IQ32T
170
0
1762-IR4
40
50
1762-IT4
40
50
1762-OA8
115
0
1762-OB8
115
0
1762-OB16
175
0
Содержание 1766-L32AWA
Страница 10: ...10 Rockwell Automation Publication 1766 UM001O EN P September 2021 Table of Contents Notes ...
Страница 18: ...18 Rockwell Automation Publication 1766 UM001O EN P September 2021 Chapter 1 Hardware Overview Notes ...
Страница 56: ...56 Rockwell Automation Publication 1766 UM001O EN P September 2021 Chapter 3 Wire Your Controller Notes ...
Страница 122: ...122 Rockwell Automation Publication 1766 UM001O EN P September 2021 Chapter 5 LCD and Keypad Notes ...
Страница 152: ...152 Rockwell Automation Publication 1766 UM001O EN P September 2021 Appendix B Replacement Parts Notes ...
Страница 160: ...160 Rockwell Automation Publication 1766 UM001O EN P September 2021 Appendix C Troubleshoot Your System Notes ...
Страница 302: ...302 Rockwell Automation Publication 1766 UM001O EN P September 2021 Glossary Notes ...
Страница 308: ...308 Rockwell Automation Publication 1766 UM001O EN P September 2021 Index Notes ...