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Calibration
Calibrating for Programming Accuracy
Revision A
83
Current
Programming
Circuit
Calibration
Table 4.2
Current Programming Calibration Procedures
Repeat this procedure until the current programming is adjusted to the desired
accuracy.
Notes:
1. The DC shunt-DVM combination must be rated better than 0.5% accuracy. The
recommended current ratings for the DC shunt and connecting wire must be at
least 10% greater than the power supply's output current rating.
2. The required DVM reading is calculated using V=I x R where V is the DVM
reading, I is the current, and R is the DC shunt resistance.
Function & designation
of multiturn trim pots
Step
Action
1
Connect a shunt and DVM to the power supply output. See Note 1.
Current Program Offset
(R95)
2
Apply 1% of program voltage. Example: 0.1 for 0-10Vdc or 0.05 for
0-5Vdc programming source
3
Adjust R95 until the DVM indicates 1% of the rated output current.
Example: 0.75A for 40V Model. See Note 2.
1
Connect a shunt and DVM to the power supply output. See Note 1.
Current Program Scale
(R66)
2
Apply 100% of program voltage. Example: 10V for 0-10Vdc or
5V for 0-5Vdc programming source
3
Adjust R66 until the DVM indicates 100% of the rated output current.
Example: 75A for 40V Model. See Note 2.
TM-25OP-01XN.book Page 83 Monday, April 5, 2004 8:58 AM
Summary of Contents for XKW 10-300
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Page 3: ...Operating Manual for XKW 3000 Watt Series Programmable DC Power Supply...
Page 14: ...xii Operating Manual for XKW 3kW Series Power Supply...
Page 18: ...List of Tables xvi Operating Manual for XKW 3kW Series Power Supply...
Page 28: ...Features and Specifications Specifications 26 Operating Manual for XKW 3kW Series Power Supply...
Page 48: ...Installation Using Remote Sensing 46 Operating Manual for XKW 3kW Series Power Supply...
Page 80: ...Operation Using Multiple Supplies 78 Operating Manual for XKW 3kW Series Power Supply...
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