Calculating Your System's Power Needs - Omega Engineering 100/200 Series User Manual

Calculating Your System's Power Needs

Use the chart below and the worktable on the next page to ensure your system will have sufficient power.
If the load (calculated in the worktable) exceeds available power (from the chart at the right), you must
add a power card or a module such as a DBK32A or DBK33.
Use the following procedure and table to calculate the required system power.
1. In the Quantity column (5th), list the number of DBKs of that type in your system.
2. In the Sub Total column (7th), enter the product of column 5 and column 6 (mW).
3. Add the Sub Total column, and enter the sum at the bottom right of the table.
This result is your power requirement in mW.
Note:
Daq Systems
Available Power Chart—Supply
Product
LogBook
DaqBook/100
DaqBook/112
DaqBook/120
DaqBook/200
DaqBook/216
DaqBook/260
DaqBoard/100A
DaqBoard/112A
DaqBoard/200A
DaqBoard/216A
DaqBoard/260A
DBK32
DBK32A
DBK33
DBK34
DBK34A
DBK32, DBK32A, and DBK34 cannot supply +5 VDC.
In cases that require +5 VDC, if the +5 VDC requirement exceeds 500 mW from a
LogBook or Daq device, then a DBK33 must be used. Note that DBK33 can supply
1000 mW at +5 VDC.
The DBK34 has an 8 amp fuse, and has a capacity of 5 A-hr when in the 12V mode,
and a capacity of 2.5 A-hr when in the 24V mode.
Available Power
+5 VDC @ 0.10 A from P1-1, P2-18, P2-20, P3-20
+15 VDC @ 0.15 A from P1-21
+15 VDC @ 0.05 A from P3-19
-15 VDC @ 0.15 A from P1-2
-15 VDC @ 0.05 A from P3-37
2100 mW
2400 mW
2100 mW
4000 mW
4000 mW
4000 mW
3300 mW
3300 mW
3000 mW
3000 mW
3000 mW
7500 mW
15000 mW
7500 mW
5 A-hr in 12 V mode; fused at 8 A
5 A-hr in 12 V mode; fused at 8 A
02-19-02
OMB-DBK Basics, pg. 9