Power Supply and Cooling Requirements
Section 3 Technical Data and Performance
154
3BSE015969-600 A
Calculation of 24V d.c. Power Consumption
Total 24 V d.c. current consumption =
V load Mod
V load
ModuleBus*0.3 +
V external load.
The calculated 5 V ModuleBus load should not exceed 1.5 A.
If many of the modules has a power consumption >125 mA at 5 V, the maximum
load could be exceeded. See
The calculated 24 V ModuleBus load should not exceed 1.4 A.
If many of the modules has a power consumption >125 mA at 24 V, the
maximum load could be exceeded.
To ensure bumpless performance of the I/O system including DO880, the power
supply for the I/O field power should be able to support at least short circuit on
one DO880 channel in addition to the total nominal load. For Short circuit current
for DO880, see Technical Data in S800 I/O Modules and Termination Units.
The following rules must be considered if ABB power supply units are being
used together with DO880.
- When using SS823, the base load must not exceed 16 A.
- With a redundant power supply configuration, consisting of two SD823 + one
SS823 in parallel with two SD823 + one SS823, the base load must not exceed
16 A.
Summary of Contents for S800
Page 1: ...Power and productivity for a better world S800 I O Product Guide ...
Page 2: ......
Page 3: ...S800 I O Product Guide ...
Page 8: ...Table of Contents 8 3BSE015969 600 A ...
Page 14: ...New in this Release About This Product Guide 14 3BSE015969 600 A ...
Page 16: ...16 3BSE015969 600 A Safety Summary ...
Page 97: ...Section 2 Product Description Power Supplies 3BSE015969 600 A 97 Figure 44 Voting Unit SS823 ...
Page 98: ...Power Supplies Section 2 Product Description 98 3BSE015969 600 A Figure 45 Voting Unit SS832 ...
Page 172: ...Certifications Section 3 Technical Data and Performance 172 3BSE015969 600 A ...
Page 174: ...Product and Price List Structure Section 4 Ordering 174 3BSE015969 600 A ...
Page 178: ...Appendix A Hardware Units for Essential Automation 178 3BSE020924 600 A ...
Page 182: ...Index 182 3BSE015969 600 A Index 182 3BSE015969 600 A ...
Page 184: ...Revision History 184 3BSE015969 600 A ...
Page 185: ......