Atec PLZ1003W User Manual

PLZ-3W/3WH series

Note: The model SMC-32 Memory Card was 

discontinued. Therefore,the function related to Memory 

card of this product is not equipped. <Oct. 2001>

ELECTRONIC LOAD (CC·CR·CV·CP)

Four types of power rating: 150W,300W,600W,and 1000W, a total of eight models Ready for constant current, constant resistance, constant voltage, and constant power modes Capable of doing actual-load simulations under sequence control Maximum input voltage of 500V(PLZ-3WH Series)

Outline

The PLZ-3W/3WH Series are composed of system electronic loads used either in characteristic or lifetime tests of a variety of DC voltage sources such as switching power supplies and primary and secondary batteries, or as burn in loads. Instruments in the PLZ-3W Series have four operation modes: “constant current”, “constant resistance”, “constant voltage”, and “constant power”. They are also available in four different power ratings, 150 W, 300 W, 600 W, and 1000 W, with a total of eight models available overall. Incorporating a high-performance current control circuit, all instruments provide highly stable, high-speed operation and offer improved operability and multi-functionality through the use of CPU control. These features allow them to simulate actual load tests of power supply units having large transitional changes in their output currents, such as printers and motors. In the constant power mode,

these instruments deliver performance in carrying out load tests on alkaline and other types of batteries. Furthermore, the PLZ3WH Series accept DC input voltages of up to 500 V, making it ready for use at high voltages. And when an optional GPIB or RS-232C interface is employed, these instruments can be operated by fully programmable control. In particular, take advantage of a Kikusui-designed multi-channel bus (MCB) to simultaneously control a maximum of 16 instruments per GPIB address or RS-232C port. (Note: In addition to the PLZ-3W/ 3WH series, this MCB will also handle PAX Series programmable power supplies and PBX Series bipolar power supplies.)

Front Panel

PLZ303WH

PLZ-3W/3WH series

ELECTRONIC LOAD (CC·CR·CV·CP)

3 4 5

1 Load terminals on the front panel

Used to connect to the device being tested. They are connected in paral lel to the load terminals on the rear panel. (Note that PLZ603W/603WH and PLZ1003W/1003WH have no load terminals on the front panel.)

2 LOAD key

Turns on/off current that flows through the instrument.

3 Screen (LCD with back light)

Displays the set values of current, resistance, voltage, and power; menu items; and a variety of parameters and messages.

4 Constant current (C.C) / constant resistance (C.R) lamps

Indicate whether the instrument is in C.C or C.R mode.

5 Function keys

Used to select each mode, or to set memories or rise/fall time.

6 JOG/SHUTTLE knobs

The JOG knob is used for fine adjustments to set values or to select val ues, and the SHUTTLE knob is used for coarse adjustments to set values.

7 Arrow keys

Used to select a menu, setting item, or a step number for program editing in the sequence mode.

8 Sequence keys

Menu keys for sequence mode

9 Memory card slot

An optional memory card (SMC-32) is inserted here.

10 Contrast control 11 Optional board slot

An optional interface board (one of GPIB, RS-232C, and MCB) is in serted here.

12 Remote sensing terminals

Used for remote sensing that compensates for the voltage drop caused by resistance in load cabling.

13 External control connector 14 Load terminals 15 AC input supply voltage range selector switch (on the bottom face)

Rear Panel

PLZ303WH

PLZ-3W/3WH series

ELECTRONIC LOAD (CC·CR·CV·CP)

Designed to Meet Today’s More Complex Loading Conditions

● Constant power mode useful for battery discharge tests

Loads of constant power such as DC/DC converters are being used increasingly for batteries, and evaluation tests on such loads also require the use of constant power. Since the PLZ-3W/3WH Series have a C.P mode, you can conduct these types of load tests (such as constant-power discharge tests) under highly realistic conditions.

● Setting of various conditions Variable rise/fall time function

When the set current needs to change abruptly , a rise/fall time (T r/Tf) to reach the set value can be selected using one of eight values between 50 µs and 10 ms. This allows the instruments to set up v arious conditions for tests in order to support tests such as transitional response tests of power supplies. The instruments can also produce accurate simulation waveforms using the sequence function. If the device being tested has an L component, setting Tr/Tf to a slower interval will prevent overvoltages caused by the L component. (Note: available Tr/Tf time settings = 50 µs, 100 µs, 200 µs, 500 µs, 1 ms, 2 ms, 5 ms, and 10 ms)

● Sequence function that allows complicated current simulations

Because instruments in the PLZ-3W/3WH Series have a sequence function that sequentially processes the data stored in each step memory, a v ariety of current simulations may be performed. Sequence data can be input either from the front panel or through an external controller using an optional interface. Input data may also be stored in an optional memory card. The sequence function offers two modes: a fast-speed mode that enables programming of 100 µs high-speed steps, and a normal-speed mode that allows programming of ramp waveforms in a single step.

Rise/fall time(in C.C mode) H: 0.2 ms/div,V: 12A/div Rising and falling waveforms of 50 µs and 200µs

Sequence mode (in C.C mode and fast-speed mode) H: 5 ms/div,V: 10 A/div

● Sequence function

■ Normal Speed

Settable items I SET value (constant current),

Step execution Time can be set for each step. time However,the range is fixed for

Pause Provided Maximum number of steps Number of repetitions 1 to 9998 and ∞ Number of programs 16 Number of sequences to be stored in a 8 memory card Number of sequences 32 Maximum

■ Fast speed Settable items I SET value (constant current),

Step execution Step time can be set on a time program basis.

Pause Not provided Maximum number of steps Number of repetitions 1 to 9998 and ∞ Number of programs 16 Number of sequences to be stored in a 8 memory card Number of sequences 32 Maximum

R SET value (constant resis tance), P SET value(constant power), V SET value(constant voltage) Trigger output Load on/off Setting of short-circuit function Specification of step transition or ramp transition

each sequence. (1)1 to 9999 ms (2)1 to 999.9 s (3)1 s to 999 min and 59 s (4)1 min to 999 hr and 59 min

256

R SET value (constant resis tance),Tr igger output

(1)0.1 ms to 100 ms

1024

To Support Today’s More Diverse Experiments and Tests

● Setup function and backup memories

Different set values can be stored as part of a setup routine in the built-in backup memories and in the optional memory card, where they can be easily accessed. These backup memories can store a maximum of four setups and the memory card, 50 setups.

● Remote sensing that compensates precisely for set values

Remote sensing will compensate for voltage drops in load lines, allowing resistance, voltage, and po wer v alues to be set precisel y. This

especially improves the transitional characteristics in the C.R and C.P modes.

● Trigger signal output useful for waveform monitoring

The instruments will output trigger signals when trigger output is specified either in sequence operation or during switching operation. These signals can then be used as synchronous signals for external instruments such as oscilloscopes, providing an easy means of waveform observation.

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