Automationdirect.com DirectLOGIC DL205 Series User Manual page 170

Chapter 4: System Design and Configuration
Power Budget Calculation Worksheet
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This blank chart is provided for you to copy and use in your power budget calculations.
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Base #
0
3
Available Base Power
CPU Slot
4
Slot 0
Slot 1
5
Slot 2
Slot 3
Slot 4
6
Slot 5
Slot 6
7
Slot 7
Other
8
Remaining Power Available
9
1. Use the power budget table to fill in the power requirements for all the system
components. This includes the CPU, any I/O modules, and any other devices, such as the
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Handheld Programmer, C-more HMI or the DV–1000 operator interface. Also, make sure
you obtain any external power requirements, such as the 24VDC power required by the
11 analog modules.
2. Add the current columns starting with CPU slot and put the total in the row labeled
"Total power required".
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3. Subtract the row labeled "Total power required" from the row labeled "Available Base
Power". Place the difference in the row labeled "Remaining Power Available".
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4. If "Total Power Required" is greater than the power available from the base, the power
budget will be exceeded. It will be unsafe to use this configuration and you will need to
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restructure your I/O configuration.
WARNING: It is extremely important to calculate the power budget. If you exceed the power budget, the
A
system may operate in an unpredictable manner which may result in a risk of personal injury or
equipment damage.
B
C
D
4–10
DL205 User Manual, 4th Edition, Rev. B
Module Type
Total Power Required
5 VDC (mA)
24 VDC Output (mA)
Auxiliary
Power Source