AC power supply PCR-LE2 series

Appendix


Troubleshooting

Symptom and Remedy

This section introduces troubleshooting measures that you can use if you notice problems during operation of the PCR-LE2 Series. This section lists representative symptoms and the corresponding items that you can check, so find the item that matches your situation. In some cases, the problem can be solved quite easily.

If you find an item that corresponds to your case, follow the remedies for the item. If you do not, we recommend that you initialize the PCR-LE2. If the remedy does not correct the problem, contact your Kikusui agent or distributor.

The control panel display does not light when the POWER switch is turned on.

The control panel is not responding. Some operations cannot be performed.

The control panel display is abnormal.

The output voltage is not generated or is different from the specified voltage.

The output voltage waveform is distorted.

“ALM-02: OHP” is displayed.

An output current can not be generated (“ALM-06: OVER LOAD” is displayed).

Even though the action to perform when the current limit is exceeded has been set to TRIP DISABLE, the PCR-LE2 Series has tripped.

A sine waveform is not generated even though waveform bank number 0 has been selected.

Power line abnormality simulations or sequences cannot be executed.

Phase settings are not correct (U PH OFS or UNBAL icons).

The output operation is unstable.

The output turns off earlier than the trip time setting.

The maximum used output voltage setting of the internal Vcc was changed.

The output cannot be turned on.

The full scale bar of the load level meter is dimly lit.

The control panel display does not light when the POWER switch is turned on.

Item to check

Possible cause

Remedy

Is the rated voltage being applied to the INPUT terminal block? / Is the terminal block tray installed all the way in its storage compartment? (PCR6000LE2 or PCR9000LE2 only)

The input power cable is not connected correctly.

The input power cable is broken.

Check whether the input power cable is damaged, and check whether the wires are securely connected to the terminals.

Is the input voltage within the rated range?

There is an input voltage error.

Check the input voltage.

TOP

The control panel is not responding. Some operations cannot be performed.

Item to check

Possible cause

Remedy

Are the keys locked?

The key lock is enabled.

Release the key lock.

Is "RMT" displayed?

The product is being controlled remotely.

Press LOCAL to switch the product to local mode (panel operation).

Is "ALARM" displayed?

There is an internal or external error.

Check the alarm type.

Is there a device nearby that is generating a lot of noise?

The product is malfunctioning because of noise.

Remove the product from the source of the noise.

Are the voltage and frequency limits set to values within the settable ranges?

The limit settings are inappropriate.

Set the limits to correct values.

TOP

The control panel display is abnormal.

Item to check

Possible cause

Remedy

Is there a device nearby that is generating a lot of noise?

The product is malfunctioning because of noise.

Remove the product from the source of the noise.

TOP

The output voltage is not generated or is different from the specified voltage.

Item to check

Possible cause

Remedy

The output method (single-phase output, single-phase three-wire output, or three-phase output) is set correctly.

The cables are connected to the incorrect terminal block.

Connect the output cables to the correct terminal block.

The cables are connected to the correct terminal block.

The output mode is not set correctly.

Specify the correct output method.

TOP

The output voltage waveform is distorted.

Item to check

Possible cause

Remedy

Is "OVER LOAD" displayed?

The internal semiconductor protection has been activated.

The product may be overloaded. Inspect the load.

  

TOP

"ALM-02: OHP" is displayed.

Item to check

Possible cause

Remedy

Has the fan stopped?

The overheat protection (ALM-02) has been activated because the fan is malfunctioning.

Immediately stop using the PCR-LE2 Series, and have it repaired.

Are the vent or inlet holes blocked?

The overheat protection (ALM-02) has been activated.

The dust filter is clogged.

Move the product so that there is at least 20 cm of space between the vents and the surrounding walls. Do not place objects within 20 cm of the vents. Clean the dust filter to remove any clogs.

Has the ambient temperature exceeded 40 °C?

The overheat protection (ALM-02) has been activated.

Use the product in an environment in which the ambient temperature is 40 °C or less. Keep loads that generate a high temperature away from the product.

TOP

An output current can not be generated ("ALM-06: OVER LOAD" is displayed).

Item to check

Possible cause

Remedy

Is the output voltage range set correctly?

The range is set to the H range.

Set the output voltage range correctly.

Does the load have a low power factor?

The rated current (which is a power factor reduction characteristic) is being exceeded.

A capacitor-input rectifier load, non-linear load, or similar type of load may be connected.

Correct the load power factor.

“About the output and the load”

Are the current limits set correctly?

The current limit settings are inappropriate.

Set the current limits to correct values.

Is the PCR-LE2 Series in DC mode?

In DC mode and AC+DC mode, the rated output current is 70 % of the value in AC mode.

The product may be overloaded. Inspect the load.

TOP

Even though the action to perform when the current limit is exceeded has been set to TRIP DISABLE, the PCR-LE2 Series has tripped.

Item to check

Possible cause

Remedy

Is "ALM-03: OCP" displayed?

The internal semiconductor protection has been activated.

If the load has shorted or is the PCR-LE2 is overloaded, the internal semiconductor protection may be activated, and an alarm may be generated.

TOP

A sine waveform is not generated even though waveform bank number 0 has been selected.

Item to check

Possible cause

Remedy

Is “S.WAVE” displayed?

The SD009-PCR-LE2 has shut down abnormally.

Turn the PCR-LE2 Series power switch off and on.

TOP

Power line abnormality simulations or sequences cannot be executed.

Item to check

Possible cause

Remedy

Is the PCR-LE2 in a condition in which simulations and sequences cannot be executed?

Voltage range, limit, compensation, and other settings are set to conditions in which simulations and sequences cannot be executed.

Change the present conditions or change the power line abnormality simulation or sequence settings.

TOP

Phase settings are not correct (U PH OFS or UNBAL icons).

Item to check

Possible cause

Remedy

If the U PH OFS icon displayed?

The U phase is offset.

The U phase is left offset in a sequence. Press SEQ (SHIFT+SIM), 1/2, and U PHASE to clear the offset.

If the UNBAL icon displayed?

Unbalanced phase difference or phase voltage is being used.

Change to a correct value.

TOP

The output operation is unstable.

Item to check

Possible cause

Remedy

Are the load wires run alongside each other?

The wiring conductance is large.

You run the load wires alongside each other.

TOP

The output turns off earlier than the trip time setting.

Item to check

Possible cause

The voltage is set at or lower than 10 V (L range) or 20 V (H range).

If the voltage is set at or lower than 10 V (L range) or 20 V (H range), the output will turn off after 3 s even if you set the trip time to 4 s or longer.

The full scale bar of the load level meter continues to be lit.

Increase in the internal temperature of the PCR-LE

If an overload occurs repeatedly, the time until the output is turned off may be shortened.

TOP

The maximum used output voltage setting of the internal Vcc was changed.

Item to check

Possible cause

The maximum used output voltage setting is lower than the peak output voltage.

If the maximum used output voltage is set lower than the peak output voltage, the maximum used output voltage setting is changed to follow the peak output voltage.

Troubleshooting (Cont.)

Symptom and Remedy (Cont.)

TOP

The output cannot be turned on.

Item to check

Possible cause

“Busy” is shown on the display.

After the ALM-03 OCP or ALM-06 OVERLOAD is activated, the PCR-LE remains in a “Busy” state for approximately 120 seconds during which the output cannot be turned on.

TOP

The full scale bar of the load level meter is dimly lit.

Item to check

Possible cause

The PCR-LE is being used on the verge of an overload.

If the internal temperature increases, even if the load is reduced, the full scale bar may continue to light dimly in red. When cooling is complete, the full scale bar turns off.

TOP

AC power supply PCR-LE2 seriesAC power supply PCR-LE2 series
Appendix