7
11. Troubleshooting
If you think a failure has occurred, first turn off the unit and disconnect the input power. Make sure that no voltage is on the
input/output terminals, and then check the input/output wiring.
They are not always a failure in the following cases, check the unit once again before requesting our services.
Problem
Items to check
”None of output”
”The output does not meet the
preset value."
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Is the input voltage within the specifications? Is the wiring correct?
Is the LS pin in the remote connector (TB1) on the rear panel short-circuited?
Is the LD pin in the remote connector (TB1) on the rear panel short-circuited?
Is the voltage setting minimized?
Are settings for Ilimit, OCP, and OPP minimized?
Is the OVP setting correct?
Is the LOCK function activated?
"Breaker trips"
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Have you replaced the original screws of the housing with different ones?
(The replaced screws may have cut into the internal circuits.)
Is the breaker's base capacity sufficient?
Are the inputs and outputs connected incorrectly?
Output voltage fluctuates or
cannot be controlled.
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Is the Ilimit operation set?
Doesn't the peak current exceed its rated value?
"Output current does not meet
the desired one."
"A protection becomes active
when the connected load is
activated."
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Is the RANGE setting correct?
Doesn't the peak current exceed its rated value?
Is the Ilimit setting value lower?
Doesn't the inrush current exceed its rated value?
Revision History
Rev. No.
Revised date
Revised contents
0.0
2020/08/13
First edition
Summary of Contents for DRK4k Series
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