AC power supply PCR-LE series

Basic


Limit Values and Protection Functions

This product has the following limit functions and protection functions.

Limit Functions

Limits can be placed on the PCR-LE Series output voltage setting and frequency setting. They prevent damage to the load caused by mistaken operations and limit the current that flows through the load.

Protection Functions

Protection functions apply limits when there is a danger of damaging the internal circuitry of the PCR-LE Series or to protect the DUT.

When a protection function is activated, an alarm (ALM-xx) or a trouble indication (TRBL-xx) is generated, and the output is turned off.

Item

Function

Description

Output off

Voltage upper limit

Voltage lower limit

Limit

You will not be able to specify voltages that are outside of the set limit range.

No

Output overvoltage protection (OVP)

Protection

If the measured voltage exceeds the OVP value, an alarm occurs, and the output turns off.

Yes

Output undervoltage protection (UVP)

Protection

If the measured voltage falls below the UVP value, an alarm occurs, and the output turns off.

Yes

Frequency upper limit

Frequency lower limit

Limit

You will not be able to specify frequencies that are outside of the set limit range.

No

Current limit

Limit

If the upper limit is exceeded, the output turns off, or the output voltage is controlled so that the limit value is not exceeded. You cannot set the lower limit. You can set how the PCR-LE Series behaves when the limit is exceeded (whether to turn off the output or control the output voltage).

If you select to turn off the output, you can set the time that must elapse before the output is turned off when the current limit is exceeded.

If you select to control the output voltage, the following functions will not be available.

• Turn soft start on (set the rise time)

• Execute power line abnormality simulations

• Run sequences

• Use the compensation function’s software sensing and regulation adjustment

Selectable

Peak current limit

Limit

This function instantly limits the peak output current. You can set positive and negative limits.

No

Internal semiconductor protection (OCP)

Protection

This function protects the internal semiconductors of the PCR-LE Series. If a temporary overcurrent—such as an inrush current—occurs, an alarm occurs, and the output turns off.

Yes

Input voltage drop protection

Protection

If the input voltage falls below the rating, a trouble indication occurs, and the output turns off.

Yes

Overload protection

Protection

If the output current exceeds the rated current or current limit, an alarm occurs, and the output turns off.

Yes

Overheat protection (OHP)

Protection

If the internal temperature increases abnormally, an alarm occurs, and the output turns off.

Yes

TOP

AC power supply PCR-LE seriesAC power supply PCR-LE series
Basic