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Rockwell Automation Publication 1766-UM001O-EN-P - September 2021
Appendix H System Loading and Heat Dissipation
Validating the System
The example systems shown in
are verified to be
acceptable configurations. The systems are valid because:
•
Calculated Current Values
<
Maximum Allowable Current Values
•
Calculated System Loading
<
Maximum Allowable System Loading
System Loading Worksheet
are provided for system loading validation. See
System Loading Example Calculations on page 293
.
1762-OB32T
175
0
1762-OF4
40
165
1762-OV32T
175
0
1762-OW8
2
80
90
160
180
1762-OW16
180
1762-OX6I
110
110
1762-IQ8OW6
110
80
Total Modules (7 maximum):
4
Subtotal:
260
180
(1) See your expansion I/O Installation Instructions for Current Requirements not listed in this table.
(2) Only applicable for Series B and Series C I/O modules.
Table 46 - Calculating the Current for Expansion I/O (Continued)
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)
Table 47 - Validating Systems using 1766-L32AWA, or 1766-L32BXB
Maximum Allowable Values
Calculated Values
Current:
Current (Subtotal from
1225 mA @ 5V DC
1155 mA @ 24V DC
0 mA + 260 mA = 260 mA @ 5V DC
0 mA + 180 mA = 180 mA @ 24V DC
System Loading:
System Loading:
33.845 W
= (260 mA x 5V) + (180 mA x 24V)
= (1,300 mW) + (4,320 mW)
= 5,620 mW
= 5.62 W
Table 48 - Validating Systems using 1766-L32BWA
Maximum Allowable Values
Calculated Values
Current for Devices Connected to the +24V DC Sensor
Supply:
Sum of all sensor currents
250 mA @ 24V DC
140 mA @ 24V DC (example sensor value)
Current for MicroLogix Accessories and Expansion I/O:
Current Values (Subtotal from
1225 mA @ 5V DC
1155 mA @ 24V DC
0 mA + 260 mA = 260 mA @ 5V DC
0 mA + 180 mA = 180 mA @ 24V DC
System Loading:
System Loading:
39.845 W
= (140 mA x 24V) + (260 mA x 5V) + (180 mA x 24V)
= (3,360 mW) + (1,300 mW) + (4,320 mW)
= 8,980 mW
= 8.98 W
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 ...