AC power supply PCR-LE2 series

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Controlling the Output Using External Analog Signals

The output can be controlled using external analog signals by installing the analog signal interface board (EX05-PCR-LE/ EX06-PCR-LE) to the slot3.

For details of installing the board on the PCR-LE, see the setup guide of EX05-PCR-LE/EX06-PCR-LE.

Amplifying the input waveform (EX05-PCR-LE only)

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- Note -

Only single-phase output is valid on the PCR6000LE2 and PCR9000LE2.

Varying the voltage of the output AC waveform using DC signals (EX06-PCR-LE only)

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SIGNAL I/O Connector

Controlling the PCR-LE2 through external contacts

You can turn the output on and off, execute and stop sequences, clear alarms, and shut down the output.

Monitoring the operation status

You can monitor the output status, alarm status, busy status, current peak limit status, and overload status.

58376.jpg CAUTION

You cannot set the voltage limit when the PCR-LE2 is being controlled using external analog signals. Accidentally applying an excessive external voltage may damage the load.

Names and functions of the parts of the analog signal interface board

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Name

Description

INPUT

BNC terminal for applying the external signal

Input terminals is electrically isolated from the output terminals of the PCR-LE2.

GAIN

Variable resistor for fine adjusting the gain (voltage amplification ratio)

OFFSET

Variable resistor for fine adjusting the offset

AUX

This is a connector for options.

SIGNAL I/O

Connector for controlling the PCR-LE2 through external contacts

Amplifying the input waveform (EX05-PCR-LE only)

You can use the PCR-LE2with EX05-PCR-LE as a power amplifier that simply amplifies the input waveform or use it to add an external signal to the PCR-LE2 Series signal source.

Selecting the signal source

Select which signal source to use to control the PCR-LE2 Series.

Internal signal source (INT)

Output the PCR-LE2 Series signal source. External signal sources are not used.

Internal signal source and external signal source (INT+EXT)

Output the sum of the PCR-LE2 Series signal source and an external signal source.

If you select INT+EXT, the PCR-LE2 Series settings will be changed as follows:

Action to perform when the current limit is exceeded: Turn the output off

Internal Vcc: FIXED: (previously set value)

Compensation function: OFF (when soft sensing or regulation adjustment is selected)

Displays the phase voltage (Single-phase three-wire output or three-phase output only)

External signal source (EXT)

The EX05-PCR-LE amplifies the external signal (0 Vrms to 1.5 Vrms) 100 times when L range is selected and 200 times when H range is selected and outputs the resultant voltage.

If you select EXT, the PCR-LE2 Series settings will be changed as follows:

Action to perform when the current limit is exceeded: Turn the output off

Synchronization function: OFF

Output on/off phase control: FREE

Internal Vcc: FIXED: (previously set value)

Compensation function: OFF (when soft sensing or regulation adjustment is selected)

Soft starts: OFF

Displays the phase voltage (Single-phase three-wire output or three-phase output only)

Press OTHERS (SHIFT+MEMORY), EXT SIG(F4) and then SOURCE(F1) to set the signal source.

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Item

Title

Description

Condition in which the function key cannot be used

INT

Signal Source

Use the internal signal.

Output on

EXT

Use the external signal.

INT+EXT

Use the internal signal and external signal.

58366.jpg CAUTION

Risk of malfunction. If you output DC voltage in AC mode, the protection features will not function properly. If you want to output DC voltage, use the PCR-LE2 Series within 70 % of the rated current, or change the output voltage mode to AC+DC.

Selecting the polarity

Select whether to output a signal whose polarity is the same as or opposite to that of the input signal.

Press OTHERS (SHIFT+MEMORY), EXT SIG(F4) and then POL(F2) to set the polarity.

During single-phase, three-wire output and three-phase output, press OTHERS (SHIFT+MEMORY), EXT SIG(F4), and then press the key that corresponds to the phase that you want to set, and then POL(F2) to set the polarity.

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Item

Title

Description

NORM

Signal Polarity

U Signal Polarity*1

V Signal Polarity*1

W Signal Polarity*2

Output a signal whose polarity is the same as the input signal.

INVERT

Output a signal whose polarity is opposite to that of the input signal.

*1. Single-phase three-wire output and three-phase output only

*2. Three-phase output only

Controlling the Output Using External Analog Signals (Cont.)

Amplifying the input waveform (EX05-PCR-LE only)

Set the estimated minimum frequency (only when using EXT)

When using an external signal source (EXT), set the minimum frequency of the input signal.

The estimated minimum frequency is used by the PCR-LE2 to determine the output current limit and the integration time for RMS measurement. The output current that can be drawn from the PCR-LE2 Series is limited by voltage, load power factor, and output frequency conditions (see Appendix A, "About the output and the load"). If the estimated minimum frequency is not set properly, the output voltage may not be limited properly and may become distorted. If the estimated minimum frequency and the actual frequency are different, the voltage and current that are being output may be different from what are displayed on the panel.

Press OTHERS (SHIFT+MEMORY), EXT SIG(F4) and then MINFREQ(F3) to set the estimated minimum frequency. When the external input signal is DC, specify 1.

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Item

Title

Description

MINFREQ

ESTimated Minimun Freq

Set the estimated minimum frequency
(1 Hz to 999 Hz, Resolution: 1)

Setting the internal Vcc

If you set the signal source to EXT or EXT+INT, the internal Vcc is changed to a fixed value. Set the Internal Vcc value to the voltage that you want to output (peak value) + 10 V.

If the internal Vcc is set to a value greater than the actual output voltage, the protection function may be activated. If the internal Vcc is set to a value less than the actual output voltage, a few hundred milliseconds of response delay will occur.

Outputting the signal

After you set the signal source, polarity, and the estimated minimum frequency (EXT only), apply an external signal to the INPUT terminal.

1

Check that the POWER switch is turned off.

2

Connect an external signal (generator) to the INPUT terminal.

3

Turn the POWER switch on.

4

Press the RANGE (SHIFT+8) key to set the voltage range (L/H)

5

Apply an external signal to the INPUT terminal.

6

Turn the OUTPUT on.

Fine adjusting the offset

You can fine adjust the offset by turning the OFFSET variable resistor using the adjustment screwdriver. Adjust the offset so that the output voltage is as close to 0 Vdc as possible with the input terminal shorted.

Fine adjusting the gain

You can fine adjust the gain by turning the GAIN variable resistor using the adjustment screwdriver. Adjust the gain so that the output voltage is 150 Vac (L range) when 1.5 Vac is applied to the input terminal.

Functional limitations

If you use an external signal, you will not be able to use the following functions, in addition to the settings that were changed when you selected the signal source.

When the internal signal source plus the external signal source are used

Harmonic current analysis function

When the external signal source is used

Setting the output voltage, voltage limit

Setting the frequency, frequency limit

Using memory

Special waveforms

Harmonic current analysis function

Power line abnormality simulations

Sequence function

Phase difference (Single-phase three-wire output or three-phase output only)

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Varying the voltage of the output AC waveform using DC signals (EX06-PCR-LE only)

When AC mode or AC+DC mode is selected, the PCR-LE2 with EX06-PCR-LE outputs AC voltage ranging from 1 V to 150 V (when L range is selected) or 2 V to 300 V (when H range is selected) with respect to a DC signal input ranging from 0 V to 10 V.

Selecting the signal source

Select whether to control the output AC voltage using an external signal.

Press OTHERS (SHIFT+MEMORY) and then, VPROG(F4) to set the signal source.

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Item

Title

Description

Condition in which the function key cannot be used

ON

VProg

Control the AC voltage using an external signal

OUTPUT on

Soft start: ON

OFF

Do not control the AC voltage using an external signal

Outputting the signal

After you set the signal source, apply an external signal to the INPUT terminal.

1

Check that the POWER switch is turned off.

2

Connect an external signal (generator) to the INPUT terminal.

3

Turn the POWER switch on.

4

Press the OPR MODE > ACDC(F2) to set the output mode (AC/ AC+DC).

5

Press the RANGE (SHIFT+8) key to set the voltage range (L/H).

6

Press F > FREQ(F1) to set the frequency (1.0 Hz to 999.9 Hz).

7

Apply an external signal to the INPUT terminal.

8

Turn the OUTPUT on.

Controlling the Output Using External Analog Signals (Cont.)

Varying the voltage of the output AC waveform using DC signals (EX06-PCR-LE only)

Fine adjusting the offset and the gain

You can fine adjust the offset by turning the OFFSET variable resistor using the adjustment screwdriver. You can fine adjust the gain by turning the GAIN variable resistor using the adjustment screwdriver.

1

Apply 1 Vdc to the INPUT terminal.

2

Turn the OUTPUT on.

3

Using an adjustment screwdriver, adjust the OFFSET variable resistor so that the output voltage is at 15 Vdc (L range).

4

Apply 10 Vdc to the INPUT terminal.

5

Using an adjustment screwdriver, adjust the GAIN variable resistor so that the output voltage is at 150 Vdc (L range).

6

Apply 1 Vdc to the INPUT terminal, and check that the output voltage is 15 Vdc (L range). If it is not, repeat steps 1 to 5 until the output voltage is 15 Vdc (L range).

When you adjust either the offset or the gain, the other value that you adjusted before may shift. Be sure to double-check both values.

7

Turn the OUTPUT off.

Functional limitations

If an external signal is used, you will not be able to use the following functions.

Setting the output AC voltage

Soft starts

Power line abnormality simulations

Sequence function

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SIGNAL I/O Connector

58407.jpg WARNING

Risk of electric shock. Never attempt to connect wires to the SIGNAL I/O connector while the POWER switch turned on.

Pin arrangement and connection

To control the PCR-LE2 Series through external contacts, use pins 6 to 10 of the SIGNAL I/O connector.

To monitor the operation status of the PCR-LE2 Series, use pins 1 to 5 of the SIGNAL I/O connector.

Remove the covering from each wire over a distance of 9 mm to 10 mm (10 mm is recommended).

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Pin

Signal Name

Description

1

OUTPUT ON STATUS

Output on status monitor

2

ALARM STATUS

Alarm status monitor

3

OOR STATUS

Current peak limit status and Overload status monitor

4

BUSY STATUS

Busy status monitor

5

STATUS COM

Output signal common

6

OUTPUT CONTROL

Output on/ off control

7

SEQ RUN

Sequence execute/ stop

8

ALARM CLR

Alarm clear

9

SHUT DOWN

Shut down the output

10

COM

Input signal common

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Controlling the PCR-LE2 through external contacts

Wiring

To minimize the influence of noise on the output, use a two-core shielded wire or a twisted-pair wire to connect the control terminals and the external contact. Make the wires as short as possible. Susceptibility to the effects of noise increases as the wires get longer. When wires are long, proper operation may be hindered even if a cable with anti-noise measures is used.

The release voltage across pins is approx. 12 V maximum, and the short circuit current is approx. 8.5 mA maximum. (The internal circuit is pulled up to 12 V through 1.3 kΩ.)

Use parts with a contact rating of 12 Vdc and 8.5 mA for the external contact.

High level input voltage (HIGH): 11 V to 12 V, or open circuit

Low level input voltage (LOW): 0 V to 1 V

When using a shielded cable, connect the shield to the chassis.

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For long-distance wiring

When wiring over a great distance, use a small relay and extend the coil side of the relay.

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Controlling the Output Using External Analog Signals (Cont.)

Controlling the PCR-LE2 through external contacts (Cont.)

Controlling the Output On/ Off

Use pins 6 to 10 of the SIGNAL I/O connector to turn the output on and off through external contacts.

If multiple units are used under floating conditions and a single external contact is used to turn on/off the output, isolate the signal to each unit such as by using a relay on the external contact signal.

Press CONFIG (SHIFT+OPR MODE), EXT.OPT(F2), CONTROL(F1) and then, OUTP ON(F1) to set the external control logic of output on/off.

38794.jpg

Item

Title

Description

DISABLE

OutputOn Control

Do not turn the output on and off through external contacts.

HIGH

Turn the output on with a high signal.

LOW

Turn the output on with a low signal.

If the output is set to off using an external contact, the OUTPUT key on the front panel is invalid. If you do not want to control the output through external contacts, set the output control logic to DISABLE.

The figure below shows an example of output on/off control when a high level signal turns the output on.

38774.jpg

When a sequence is running, the output on/off control through external contacts is invalid.

Controlling the Sequence Execute/Stop

Use pins 7 to 10 of the SIGNAL I/O connector to turn the sequence execute and stop through external contacts.

Press CONFIG (SHIFT+OPR MODE), EXT.OPT(F2), CONTROL(F1) and then, SEQ RUN(F2) to set the external control logic of sequence run/stop.

38762.jpg

Item

Title

Description

DISABLE

SeqRun Control

Do not execute/stop the sequence through external contacts.

HIGH

Execute the sequence with a high signal.

LOW

Run the sequence with a low signal.

When a sequence is stopped through external contacts, RUN (F1) on the front panel is invalid. If you do not want to control the sequence through external contacts, set the output control logic to DISABLE.

The figure below shows an example of sequence execute/stop control when a high level signal execute the sequence.

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Clear alarms

Use pins 8 and 10 of the SIGNAL I/O connector to clear alarms through external contacts.

Press CONFIG (SHIFT+OPR MODE), EXT.OPT(F2), CONTROL(F1) and then, ALMCLR(F3) to set the external control logic of alarm clear.

38733.jpg

Item

Title

Description

DISABLE

AlarmClr Control

Do not clear alarms through external contacts

HIGH

Alarm clear with a high signal.

LOW

Alarm clear with a low signal.

Shut down the output

Use pins 9 and 10 of the SIGNAL I/O connector to shut down the output through external contacts. This takes precedence over the feature that turns the output on and off through external contacts.

When the output is shut down, “TRBL-19 EXT.SHUTDOWN” appears on the panel.

Press CONFIG (SHIFT+OPR MODE), EXT.OPT(F2), CONTROL(F1) and then, SHUTDOWN(F4) to set the external control logic of shutdown.

38715.jpg

Item

Title

Description

OPEN

Shutdown Control

Turn output off with open circuit (input voltage: 11 V to 12V).

SHORT

Turn output off with short circuit (input voltage: 0 V to 1 V).

Recovery

Turn the POWER switch off.

If the external control logic is OPEN, short pins 9 and 10, and turn the POWER switch on.

If the external control logic is SHORT, open pins 9 and 10, and turn the POWER switch on.

Controlling the Output Using External Analog Signals (Cont.)

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Monitoring the operation status

You can externally monitor the following operation status of the PCR-LE2.

Output (OUTPUT ON STATUS)

Use pins 1 and 5 of the SIGNAL I/O connector.

The signal turns on when the output is on.

Alarm occurrence (ALARM STATUS)

Use pins 2 and 5 of the SIGNAL I/O connector.

The signal turns on when an alarm or trouble occurs.

Current peak limit and overload (OOR STATUS)

Use pins 3 and 5 of the SIGNAL I/O connector.

The signal turns on when the current limit is exceeded (OVERLOAD indication) and when current peak is being limited (IPKLIM indication).

Busy (BUSY STATUS)

Use pins 4 and 5 of the SIGNAL I/O connector.

The signal turns on when the output cannot be turned on (busy status).

For a few seconds when the sleep function is disabled

For approx. 0.6 seconds when the output voltage range is switched

For approx. 120 seconds when the current limit is exceeded

For approx. 120 seconds when the internal semiconductor protection is activated

For a few seconds when the output phase is switched

For a few seconds when the output method for single-phase three-wire output is switched

The output signals are open collector outputs of photocouplers (30 Vdc, 8 mA); they are insulated from the internal circuits of the PCR-LE2.

Maximum voltage: 30 V

Maximum current (Sink): 8 mA

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Selecting the phase to monitor (PCR27000LE2 only)

If you want apply current peak limit and overload monitoring (OOR STATUS) during single-phase three-wire output or three-phase output, you can select whether to monitor the entire system or each phase. To monitor each phase, an analog signal interface board must be installed for the phase that you want to monitor.

Press CONFIG (SHIFT+OPR MODE), EXT.OPT (F2), STAT.OUT (F2) and then, LMT STAT (F1) to select the phase that you want to monitor.

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Item

Title

Description

TOTAL

OOR Status Out

Monitor the entire system and output the status.

EACH

Monitor the phase for which the board is installed and output the status.

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