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If the EEPROM was damaged or the latest operation data in the EEPROM was lost, the
VFD will highlight the “Error” indicator. Accessing the “Info” menu will give detailed error
information. If self-test passes, VFD will display:
Self-test Errors
If any errors occur during power up, please contact B&K Precision.
Output Check
Voltage and Frequency Check
Follow the steps below to check basic voltage output with no load connected.
1. Turn on the AC power source. The display will show the OFF annunciator above the
voltage display.
2. Using the numeric keypad or the rotary knob, enter a voltage value. The voltage display
will show the value you entered. If entering with the numeric keypad, press
first, then enter the value and press
.
3. Press the button and set the frequency using the numeric keypad or the rotary
knob. If entering with the numeric keypad, make sure to press
after entering a
value.
4. Enable the output by pressing
, and the button will be illuminated. The OFF
annunciator will disappear and the output timer will begin counting.
5. Once the output is ON, the voltage display will show the measured voltage at the output,
which may fluctuate slightly from the voltage value entered in the previous step.
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