AC power supply PCR-LE series

Appendix


Suddenly changing the phase

To suddenly change the phase, specify a sudden phase change after setting the starting and ending phase angles.

We will explain using an example whose phase changes suddenly from 90° to 270° between steps 2 and 3.

Because step 2 is set to 100 ms and 25 Hz, the phase angle will end at 180° if the ending phase angle is not specified (FREE). Because we want the phase to suddenly change from 90° to 270° between steps 2 and 3, we set the ending phase angle of step 2 to 90°. Step 3 will not begin until the phase angle changes from 180° to 90°, so there will be a phase wait time.

59810.jpg

STEP

0

1

2

3

4

ACVOLT [V]

AC voltage

5.0

10.0

5.0

10.0

5.0

FREQ [Hz]

Frequency

50.0

50.0

25.0

25.0

50.0

TIME [ms]

Step time

100

100

100

100

100

OUTPUT

ON

ON

ON

ON

ON

S.PHASE [deg]

Starting phase angle

0

FREE

FREE

FREE

FREE

E.PHASE [deg]

Ending phase angle

FREE

FREE

90

FREE

FREE

PHAS.CHG

Sudden phase change

OFF

OFF

OFF

OFF

OFF

We want the phase to suddenly change to 270° in step 3, so we set the starting phase angle of step 3 to 270° and set the sudden phase change function to on. Step 2 will end at 90°, and step 3 will begin immediately from 270°.

To use sudden phase change, be sure to set the ending phase angle of the previous step and the starting phase angle of the step in which you want the phase to suddenly change. If either phase angle is set to FREE and sudden phase change is set to on, the waveform will not change at the correct phase angles.

59820.jpg

STEP

0

1

2

3

4

ACVOLT [V]

AC voltage

5.0

10.0

5.0

10.0

5.0

FREQ [Hz]

Frequency

50.0

50.0

25.0

25.0

50.0

TIME [ms]

Step time

100

100

100

100

100

OUTPUT

ON

ON

ON

ON

ON

S.PHASE [deg]

Starting phase angle

0

FREE

FREE

270

FREE

E.PHASE [deg]

Ending phase angle

FREE

FREE

90

FREE

FREE

PHAS.CHG

Sudden phase chage

OFF

OFF

OFF

ON

OFF

Note that even if you set both the starting and ending phase angles, if you do not set the sudden phase change function to on, the phase will not change suddenly.

59842.jpg

STEP

0

1

2

3

4

S.PHASE [deg]

Starting phase angle

0

FREE

FREE

270

FREE

E.PHASE [deg]

Ending phase angle

FREE

FREE

90

FREE

FREE

PHAS.CHG

Sudden phase change

OFF

OFF

OFF

OFF

OFF

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