AC power supply PCR-M series
Appendix
If you suspect that the PCR-M has malfunctioned, check whether any of the items below apply to your case. In some cases, the problem can be solved quite easily. For details on remote control, see the FAQ section in the Communication Interface Manual.
If you find an item that corresponds to your case, follow the remedy for the item. If you do not, we recommend that you initialize the PCR-M (memory contents are cleared). If the remedy does not correct the problem, contact your Kikusui agent or distributor.
The control panel display does not turn on even when the POWER switch is turned on.
A alarm sounds when the POWER switch is turned on.
A portion or all of the control panel do not work.
The output voltage waveform is distorted.
The DC output cannot be set to negative voltage.
The PCR-M does not switch to local mode even when the local key is pressed.
The communication type or RS232C settings do not take effect.
The output operation is unstable.
■ The control panel display does not turn on even when the POWER switch is turned on.
|
Check Item |
Check |
Possible Cause |
Remedy |
|
Is the rated voltage being applied to the AC inlet/ INPUT terminal block? |
No |
• Broken power cord • Bad contact at the AC inlet of the rear panel (PCR500M) • Improper connection of the power cord (except PCR500M) |
Check that the power cord is not broken and that the AC inlet connection is secure. |
|
Yes |
Malfunction |
Remove the power plug from the outlet. (PCR500M) Turn off the circuit breaker of switchboard. (except PCR500M) Immediately stop the use of the instrument and request repairs. |
■ A alarm sounds when the POWER switch is turned on.
|
Check Item |
Check |
Possible Cause |
Remedy |
|
Is the ALARM LED illuminated or an error number displayed? |
Yes |
An alarm or error occurs. |
Check the alarm or error type. |
|
No |
Memory error |
The PCR-M has been initialized due to memory error. Memory contents have been cleared. If a alarm sounds many times, request repairs. |
|
Check Item |
Check |
Possible Cause |
Remedy |
|
Is an alarm/error number displayed? |
Yes |
An internal or external error occurred on the PCR-M. |
Check the alarm type. |
|
Is the fan stopped? |
Yes |
The overheat protection (alarm A-04) tripped due to a fan failure. |
Immediately stop the use of the instrument and request repairs. |
|
Is the air inlet or outlet obstructed? |
Yes |
• The overheat protection (alarm A-04) tripped. • Clogged dust filter. |
Allow at least 20 cm between the air outlet and the wall. Do not place objects within 20 cm. Clean the dust filter. |
|
Is the ambient temperature exceeding 40 °C? |
Yes |
The overheat protection (alarm A-04) tripped. |
Use the PCR-M in an ambient temperature of less than or equal to 40 °C. Move equipment that generate heat at high temperatures away from the PCR-M. |
If your case does not correspond to any of the items above, see “Protection Functions and Alarm Errors.”
■ A portion or all of the control panel do not work.
|
Check Item |
Check |
Possible Cause |
Remedy |
|
Is the KEYLOCK LED illuminated? |
Yes |
Key lock is enabled. |
Release the panel lock. |
|
Is the input voltage within the rated range? |
No |
Abnormal input voltage |
Set the input voltage so that it is within the rated voltage range. |
|
Is there a device generating strong noise nearby? |
Yes |
Erroneous operation due to noise |
Move the PCR-M away from the noise source. |
|
Is the REMOTE LED illuminated? |
Yes |
The PCR-M is controlled via the RS232C, GPIB, or USB interface. |
This is a normal behavior. To control the PCR-M from the panel, press the LOCAL key to enable local mode. |
|
Are the voltage limit and frequency limit within the selectable range? |
No |
The limit values are not set correctly. |
Set the limit values correctly. |
■ The output voltage waveform is distorted.
|
Check Item |
Check |
Possible Cause |
Remedy |
|
Is OVER LOAD illuminated? |
Yes |
The overload protection tripped. |
The PCR-M may be overloaded. Check the load. |
|
No |
Malfunction |
Immediately stop the use of the instrument and request repairs. |
■ The voltage does not change even when the rotary knob is turned when the PCR-M is showing the measured value display.
|
Check Item |
Check |
Possible Cause |
Remedy |
|
Did you press the F, LIMIT, or CONFIG key after pressing the V key? |
Yes |
The rotary knob is disabled. |
Press the V key twice again. The voltage changes on the measured value display. |
■ The DC output cannot be set to negative voltage.
|
Check Item |
Check |
Possible Cause |
Remedy |
|
Is the voltage lower limit set to a negative value? |
No |
The limit value is not set correctly. |
Set the voltage lower limit to a negative value. The factory default voltage lower limit of DC mode is 0.0 V. |
■ The PCR-M does not switch to local mode even when the local key is pressed.
|
Check Item |
Check |
Possible Cause |
Remedy |
|
Was a local lockout (LLO) command sent via the communication interface? |
Yes |
Local key operation disabled by local lockout (LLO). |
Use a communication command to clear the local lockout (LLO) command. |
■ The communication type or RS232C settings do not take effect.
|
Check Item |
Check |
Possible Cause |
Remedy |
|
Did you turn off the POWER switch after changing the settings? |
No |
The power has not been restarted. |
The product saves its settings at 5 second intervals. After you change the settings, wait 5 seconds, turn the POWER switch off, and then turn it back on. |
|
Yes |
The POWER switch was turned off before the product was able to save the new settings. |
■ The output operation is unstable.
|
Check Item |
Check |
Possible Cause |
Remedy |
|
Are the load wires twisted (run alongside each other)? |
Yes |
The product is malfunctioning. |
Immediately stop using the PCR-M Series, and have it repaired. |
|
No |
The wiring conductance is large. |
Connect by twisting the load wires (running them alongside each other). |
AC power supply PCR-M series
Appendix