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output current should be measured with a volt meter across the current shunt. The volt
meter value will need to be translated to current based on the shunt value being used.
6. When the measured module current output matches the current setting press the voltage
encoder switch to accept the gain value and exit the CL03 or CL07 menu.
7. From the module read back calibration menu rotate the current encoder until the display
shows “CAL” “CL04” (module A) or “CL08” (module B). Press the voltage encoder switch
to view and change CL04 or CL08. When CL04 or CL08 are viewed the top display will
show “E.rd SEt CL0#”. The bottom display shows the voltage setting (output value) that will
be used to calibrate the volt meter gain value.
8. The volt meter gain value can be calibrated at any voltage output level greater than 10% of
the module output voltage rating. However it is recommended to calibrate the volt meter
gain at 95% of the module output voltage rating (the default output setting is 95% of the
module output rating). The connected load should be sized according to the voltage level
that will be used for calibration. Set the voltage output setting by turning the current
encoder to adjust the currently selected digit (blinking). Each press of the current encoder
switch advances to the next digit. A voltage output setting of zero can be used to view the
volt meter gain value with minimal power supply output.
9.
Push the “OPER” switch to enable the power supply output. The top display shows “E.rd
gAin CL0#”, the bottom display shows the gain value. Use the current encoder to adjust
the gain value until the measured module output matches the output level set in the
previous step. Increasing the gain value will decrease the module output. The module
output voltage should be measured with a volt meter across the module output bus.
10. When the measured module voltage output matches the voltage setting press the voltage
encoder switch to accept the gain value and exit the CL04 or CL08 menu.
11. From the module read back calibration menu rotate the current encoder until the display
shows “CAL” “End”. Press the voltage encoder switch to exit the module read back
calibration menu and return to the “Calibrate Configuration Menu”.
If changes were made to any calibration values you will be prompted to store the changes. Select
“yES” to accept the changes or “no” to cancel the changes to the calibration values
10.2.3. Meter Filter Settings
The module read back calibration menu contains a digital filter setting. This digital filter can be
adjusted to provide more or less filtering of the module current and voltage readings. The filter
value does not need to be adjusted periodically to maintain proper calibration. In most cases the
factory preset filter setting will provide adequate filtering.
1. From the module read back calibration menu rotate the current encoder until the display
shows “CAL” “FLtA” (module A) or “FLtb” (module B). Press the voltage encoder switch to
view
and change the filter setting. The top display will show “rEAd FILt SEC”. The bottom
display shows the filter setting.
2. The filter setting is shown in seconds. Longer filter times will result in more stable readings.
Longer filter times will also make the current and voltage meters respond more slowly to
changes in output. The shortest filter time that provides stable readings should be used. In
most cases the shortest filter time can be used. Use the current encoder to select a filter
time and then press the voltage encoder button to accept the value.
