AC power supply PCR-LE2 series

Basic


Setting the Output Voltage

To set the output voltage, set the output voltage mode, the output voltage range, and the output voltage value.

“Setting the output voltage mode

“Setting the output voltage range”

“Setting the output voltage

“Output voltage setup procedure

“Single-phase, three-wire output voltage setup procedure

“Three-phase output voltage setup procedure

Setting the output voltage mode

The PCR-LE2 Series has the following output voltage modes: AC, DC, and AC+DC.

You can switch between modes when the output is off.

The AC voltage setting is shared between AC and AC+DC modes.

The DC voltage setting is shared between DC and AC+DC modes.

During three-phase output, only AC mode and AC+DC mode are available.

AC mode

AC output is generated. “AC” and the frequency are displayed.

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DC mode

DC output is generated. “DC” is displayed.

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AC+DC modeAC+DC mode

Voltage waveforms in which AC has been superimposed on DC and voltage waveforms in which DC has been superimposed on AC are generated. “AC+DC” and the frequency of the AC component are displayed.

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Output mode

Example) Output voltage

Single-phase output

Three-phase output

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Three-phase output

U-phase

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V-phase*1

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*1. The V phase is automatically set to the same amplitude as the U phase but with opposite polarity.

Output voltage mode setup procedure

Press OPR MODE and then ACDC (F2) to select the output voltage mode. Then, press ENT to confirm the selection.

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Item

Title

Description

Condition in which the function key cannot be used

AC

VMode

AC mode is selected.

Output on

DC

DC mode is selected.

AC+DC

AC+DC mode is selected.*1

*1. If the output voltage mode is changed from AC or DC to AC+DC and the peak voltage of the resultant AC+DC waveform falls outside the -215.5 V to 215.5 V range (L range) or -431 V to 431 V range (H range), the DC voltage setting is forced to 0 V.

Setting the Output Voltage (Cont.)

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Setting the output voltage range

The PCR-LE2 Series has the following output voltage ranges: L and H.

The maximum output current varies depending on the output voltage range. The maximum output current of the H range is half of the maximum output current of the L range.

You can switch between settings when the output is off.

Output voltage range setup procedure

Press RANGE (SHIFT+8) to select the output voltage range.

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Item

Title

Description

Condition in which the function key cannot be used

L

VRange

The L range is selected.

If you specify a value that is greater than 152.5 V with the H range selected and then switch to the L range, the output voltage will be set to 0 V.

Output on

H

The H range is selected.

  

Output voltage setting range

AC voltage

DC voltage

L range

0 V to 152.5 V

-215.5 V to +215.5 V

H range

0 V to 305.0 V

-431.0 V to +431.0 V

The output cannot be turned on for approximately 0.6 ms after the range is switched (Busy state).

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Setting the output voltage

You can set the output voltage while output is on or off. The measured value is always displayed.

Set the voltage limit to prevent the PCR-LE2 Series from generating a voltage that is greater than is necessary.

Be sure to set the output mode (single-phase, three-wire output or two-phase output) before you set the voltage.

The PCR-LE2 Series output impedance is extremely low, so depending on the load, a current may flow even if the voltage is set to 0.0 V. Be sure to turn the output off or turn the POWER switch off when you do not want any current to flow and before you connect a load.

AC mode

Specify the AC voltage that you want to generate.

You can specify an output voltage as low as 0.0 V, but the voltage that is actually generated will not be lower than a value in the range of 0.1 V to 0.6 V (the value varies depending on factors such as the output voltage range and the temperature).

DC mode

Specify the DC voltage that you want to generate.

AC+DC mode

Specify the AC and DC voltages that you want to generate.

The AC voltage setting is shared between AC and AC+DC modes.

The DC voltage setting is shared between DC and AC+DC modes.

The set AC and DC voltages must meet the following conditions: (1) they must be within the setting range of the voltage limit and (2) the AC+DC waveform’s peak value must be within -431 V to 431 V when the H range is selected and within -215.5 V and 215.5 V when the L range is selected.

When the output is on

If the output is on, the measured value (output terminal voltage) and the setting are displayed. You can adjust the output voltage while viewing the output voltage setting and the measured value.

If you are using the rotary knob to set the value, you may increase or decrease the value too much because the display response is slow. Until you have an intuitive understanding of the display response speed, change the output voltage while viewing the voltage setting or make small changes to the output voltage.

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Output voltage setup procedure

To set the AC voltage, press V and then ACVOLT (F1).

To set the DC voltage, press V and then DCVOLT (F2).

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Item

Title

Description

Valid modes

ACVOLT

ACVolt

Sets the AC voltage

AC, AC+DC

DCVOLT

DCVolt

Sets the DC voltage

DC, AC+DC

  

Output voltage setting range

AC voltage

DC voltage

L range

0 V to 152.5 V

-215.5 V to +215.5 V

H range

0 V to 305.0 V

-431.0 V to +431.0 V

Setting the Output Voltage (Cont.)

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Single-phase, three-wire output voltage setup procedure

Voltage setting range

Phase voltage setting range

  

AC voltege setting range

DC voltage setting range

L range

0 V to 152.5 V

-215.5 V to +215.5 V

H range

0 V to 305.0 V

-431.0 V to +431.0 V

Line voltage setting range

The line voltage is twice the phase voltage.

  

AC voltege setting range

DC voltage setting range

L range

0 V to 305.0 V

-431.0 V to +431.0 V

H range

0 V to 610.0 V

-862.0 V to +862.0 V

AC mode

Specifying the AC voltage with phase voltages

To set all the phases at the same time, press V and then PHAS VOLT (F1).

To set the U phase, press V, 1/2(F6), and then U VOLT(F1).

To set V phase, press V, 1/2(F6), and then V VOLT(F2).

With an unbalanced configuration, the unbalance icon is displayed.

Item

Title

Description

PHAS VOLT

AC PhaseVolt

Sets the AC voltage of all the phases

U VOLT

U AC PhaseVolt

Sets the AC voltage of U phase

V VOLT

V AC PhaseVolt

Sets the AC voltage of V phase

Sets the phase difference

You can set the phase difference between U and V. To do so, press V, 1/2 (F6), and then UV PHASE (F4). If you set the phase difference to a value other than 180°, the unbalance icon is displayed.

Item

Title

Description

UV PHASE

U V Phase

Sets the U-V phase difference (0 deg to 359 deg)

Specifying the AC voltage with line voltages

You can set the line voltage. The line voltage is valid when the phase difference between U and V is 180°.

To do so, press V, and then LINE VOLT (F2).

Item

Title

Description

LINE VOLT

AC LineVolt

Sets the line voltage

DC mode

Specifying the DC voltage with phase voltages

Set a voltage that is 1/2 the voltage that is necessary between the lines.

To set the DC voltage to assign to the U phase, press V and then PHAS VOLT(F1). The V phase is automatically set to the same amplitude as the U phase but with opposite polarity.

Item

Title

Description

PHAS VOLT

DC PhaseVolt

Sets the DC voltage

Specifying the DC voltage with line voltages

You can set the line voltage.

To do so, press V, and then LINE VOLT (F2).

Item

Title

Description

LINE VOLT

DC LineVolt

Sets the line voltage

AC+DC mode

Specifying the AC voltage with phase voltages

To set all the phases at the same time, press V and then AC PHAS VOLT (F1).

To set the U phase, press V, 1/x(F6), and then U ACVOLT(F1).

To set V phase, press V, 1/x(F6), and then V ACVOLT(F2).

With an unbalanced configuration, the unbalance icon is displayed.

Item

Title

Description

AC PH VOLT

AC PhaseVolt

Sets the AC voltage of all the phases

U ACVOLT

U AC PhaseVolt

Sets the AC voltage of U phase

V ACVOLT

V AC PhaseVolt

Sets the AC voltage of V phase

Specifying the AC voltage with line voltages

You can set the line voltage. In two-phase output (2P MODE ON) ,the line voltage is valid when the phase difference between U and V is 180°.

To do so, press V, and then LINE VOLT (F2).

Item

Title

Description

LINE VOLT

AC LineVolt

Sets the line voltage

Setting the DC voltage

Set the DC voltage with phase voltages.

Set a voltage that is 1/2 the voltage that is necessary between the lines.

To set the DC voltage to assign to the U phase, press V and then DC PHAS VOLT(F3). The V phase is automatically set to the same amplitude as the U phase but with opposite polarity.

Item

Title

Description

DC PH VOLT

DC PhaseVolt

Sets the DC voltage

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Three-phase output voltage setup procedure

Voltage setting range

Phase voltage setting range

  

AC voltege setting range

DC voltage setting range

L range

0 V to 152.5 V

-215.5 V to +215.5 V

H range

0 V to 305.0 V

-431.0 V to +431.0 V

Line voltage setting range

The line voltage is √3 times the phase voltage.

  

AC voltage setting range

L range

0 V to 264.1 V

H range

0 V to 528.2 V

AC Mode

Specifying the AC voltage with phase voltages

To set all the phases at the same time, press V and then PHAS VOLT (F1).

To set the U phase, press V, 1/2(F6), and then U VOLT(F1).

To set V phase, press V, 1/2(F6), and then V VOLT(F2).

To set W phase, press V, 1/2(F6), and then W VOLT(F3).

With an unbalanced configuration, the unbalance icon is displayed.

Item

Title

Description

PHAS VOLT

AC PhaseVolt

Sets the AC voltage of all the phases

U VOLT

U AC PhaseVolt

Sets the AC voltage of U phase

V VOLT

V AC PhaseVolt

Sets the AC voltage of V phase

W VOLT

W AC PhaseVolt

Sets the AC voltage of W phase

Sets the phase difference

You can set the phase differences between U and V and between U and W.

To set the phase difference between U and V, press V, 1/2 (F6), and then UV PHASE (F4). To set the phase difference between U and W, press V, 1/2 (F6), and then UW PHASE (F5).

If the phase difference between U and V is set to a value other than 120° or the phase angle between U and W is set to a value other than 240°, the unbalance icon is displayed.

Item

Title

Description

UV PHASE

U V Phase

Sets the U-V phase difference (0 deg to 359 deg)

UW PHASE

U W Phase

Sets the U-W phase difference (0 deg to 359 deg)

Specifying the AC voltage with line voltages

You can set the line voltage when the phase difference between U and V is 120° and the phase difference between U and W is 240°. To do so, press V and then LINE VOLT (F2).

Item

Title

Description

LINE VOLT

AC LineVolt

Sets the line voltage

AC+DC Mode

Specifying the AC voltage with phase voltages

To set all the phases at the same time, press V and then AC PH VOLT (F1).

To set the U phase, press V, 1/4(F6), and then U AC VOLT(F1).

To set V phase, press V, 1/4(F6), and then V ACVOLT(F2).

To set W phase, press V, 1/4(F6), and then W ACVOLT(F3).

With an unbalanced configuration, the unbalance icon is displayed.

Item

Title

Description

AC PH VOLT

AC PhaseVolt

Sets the AC voltage of all the phases

U ACVOLT

U AC PhaseVolt

Sets the AC voltage of U phase

V ACVOLT

V AC PhaseVolt

Sets the AC voltage of V phase

W ACVOLT

W AC PhaseVolt

Sets the AC voltage of W phase

Sets the phase difference

You can set the phase differences between U and V and between U and W.

To set the phase difference between U and V, press V, 1/4 (F6), and then UV PHASE (F4). To set the phase difference between U and W, press V, 1/4 (F6), and then UW PHASE (F5).

If the phase difference between U and V is set to a value other than 120° or the phase angle between U and W is set to a value other than 240°, the unbalance icon is displayed.

Item

Title

Description

UV PHASE

U V Phase

Sets the U-V phase difference (0 deg to 359 deg)

UW PHASE

U W Phase

Sets the U-W phase difference (0 deg to 359 deg)

Specifying the AC voltage with line voltages

You can set the line voltage when the phase difference between U and V is 120° and the phase difference between U and W is 240°. To do so, press V and then AC LIN VOLT (F2).

Item

Title

Description

AC LIN VOLT

AC LineVolt

Sets the line voltage

Setting the DC voltage

Set the DC voltage with phase voltages.

To set all the phases at the same time, press V and then DC PH VOLT (F3).

To set the U phase, press V, 1/4(F6), 2/4(F6), and then U DCVOLT(F1). To set V phase, press V, 1/4(F6), 2/4(F6), and then V DCVOLT(F2). To set W phase, press V, 1/4(F6), 2/4(F6), and then W DCVOLT(F3).

With an unbalanced configuration, the unbalance icon is displayed.

Item

Title

Description

DC PH VOLT

DC PhaseVolt

Sets the DC voltage of all the phases

U DCVOLT

U DC PhaseVolt

Sets the DC voltage of U phase

V DCVOLT

V DC PhaseVolt

Sets the DC voltage of V phase

W DCVOLT

W DC PhaseVolt

Sets the DC voltage of W phase

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