Kikusui PLZ-3WH Series User manual

ELECTRONIC LOAD
PLZ-3WH SERIES
PLZ153WH
PLZ303WH
PLZ603WH
PLZ1003WH
Operation Manual
ElectronicTest
Instruments&
PowerSupplies
Part No. Z1-002-502 IB003003

Use of Operation Manual
Please read through and understand this Operation Manual before operating the product. After reading,
always keep the manual nearby so that you may refer to it as needed. When moving the product to another
location, be sure to bring the manual as well.
If you find any incorrectly arranged or missing pages in this manual, they will be replaced. If the manual it
gets lost or soiled, a new copy can be provided for a fee. In either case, please contact Kikusui distributor/
agent, and provide the “Kikusui Part No.” given on the cover.
This manual has been prepared with the utmost care; however, if you have any questions, or note any errors
or omissions, please contact Kikusui distributor/agent.
Reproduction and reprinting of this product as well as this operation manual, whole or partially, without
our permission is prohibited.
Both unit specifications and manual contents are subject to change without notice.
Copyright© 1997-2002 Kikusui Electronics Corporation
Printed in Japan.

VII
Contents
4.4.5 Saving and Calling Set Values ..................................................................................... 4-18
4.4.6 Switching Function....................................................................................................... 4-21
4.4.7 Keylock Function ......................................................................................................... 4-23
4.4.8 Setup Function and Backup Memory ........................................................................... 4-24
4.4.9 Configuration................................................................................................................ 4-26
4.4.10 Alarm ............................................................................................................................ 4-28
4.4.11 Short Function .............................................................................................................. 4-29
4.5 Sequence Operation ................................................................................................................... 4-31
4.5.1 Description of Sequence ............................................................................................... 4-31
4.5.2 Outline of Sequence Operation Setup .......................................................................... 4-37
4.5.3 Sequence Operation Setup Procedure .......................................................................... 4-38
4.6 External Control ......................................................................................................................... 4-47
4.6.1 External Control of CC (Constant Current) Mode ....................................................... 4-49
4.6.2 External Control of CR (Constant Resistance) Mode .................................................. 4-51
4.6.3 External Control of CP (Constant Power) Mode.......................................................... 4-53
4.6.4 External Control of Load on/off ................................................................................... 4-54
4.6.5 External Control of Range Select ................................................................................. 4-55
4.6.6 Trigger Signal ............................................................................................................... 4-56
4.7 Parallel Operation ...................................................................................................................... 4-57
Chapter 5 Remote Control
5.1 Initial Setup of Interface ............................................................................................................ 5-2
5.1.1 GPIB Interface (IB11) .................................................................................................. 5-2
5.1.2 RS-232C Interface (RS11) ........................................................................................... 5-2
5.1.3 MCB Interface (MC11S) .............................................................................................. 5-3
5.2 Programming Format ................................................................................................................. 5-4
5.2.1 Command ..................................................................................................................... 5-4
5.2.2 Response Message ........................................................................................................ 5-5
5.2.3 Acknowledge Message (RS-232C) .............................................................................. 5-5
5.2.4 Flow Control (RS-232C) .............................................................................................. 5-6
5.3 Description of Command ........................................................................................................... 5-7
5.3.1 Header and Data ........................................................................................................... 5-7
5.3.2 Configuration of Commands ........................................................................................ 5-8
5.4 Register Bit Assignment ............................................................................................................ 5-25
5.5 Register and SRQ, and Status Byte ............................................................................................5-27
5.6 Error Codes ................................................................................................................................ 5-28
Chapter 6 Maintenance and Calibration
6.1 Maintenance and Calibration ....................................................................................................... 6-2
6.1.1 Cleaning the Panel Surface ........................................................................................... 6-2
6.1.2 Cleaning the Dust Filter................................................................................................ 6-2
6.1.3 Inspection of AC Power Cable ..................................................................................... 6-3
6.1.4 Performance Check ...................................................................................................... 6-3
6.1.5 Overhaul ....................................................................................................................... 6-4

1-2
Chapter 1: General
1.1 General
The PLZ-3WH series electronic load unit is a multifunctional system designed to offer the highest levels of safety and
reliability. This load unit contains a high-performance current control circuit to ensure stable, high-speed operating
performance. In addition, its CPU control feature works to improve operability and multifunctional capability.
The unit's constant power-control feature allows you to, for example, test batteries more efficiently. Moreover, when
various optional interfaces or a dedicated remote controller are employed, the load unit can be incorporated into a
wide-ranging test and inspection system. This PLZ-3WH load unit also permits various high-speed load simulations to
be conducted.
1.2 Feature
The PLZ-3WH series electronic load unit offers a wide array of features. This section describes some of the more
notable ones.
■Constant power mode
The load unit supports a constant power-mode control feature which is highly effective in battery life tests.
Constant current, constant resistance, and constant voltage modes are also available.
■50 µµ
µµ
µs high-speed operation
Constant current mode provides rise and fall times as short as 50 µs, thereby allowing you to conduct more
accurate DC power transient response tests and to generate simulated waveforms for use as dummy loads.
■Sequence function
With PLZ-3WH units, arbitrarily set sequence patterns can be saved to built-in memory. Two types of sequences
are available: a fast speed sequence programmable at 100 µs a step; and a normal speed sequence allowing ramp
waveforms to be set for every step. The saved sequence patterns can be executed using either a host controller or
trigger signal from a PC (via an interface), or from the operation panel of the load unit.
■Operability
Major functions of the load unit can be promptly triggered, due to the unit's "one key - one function" design
philosophy. Highly precise settings can be easily input using the jog-shuttle or optional numeric-key unit. The
optional remote controller ensures remote control capability. And for repetitive tests, there are two highly
convenient functions: a setup function, helpful in saving and calling set items; and a dedicated-key operating
function, which allows operating mode settings to be easily saved and retrieved.
■User-friendly backlit liquid crystal display
Since this load unit is equipped with an LED-backlit liquid crystal display (LCD), operating instructions and test
data are easily viewed and monitored regardless of surrounding lighting conditions.
■Abundant interface boards (optional)
These optional interface boards support various control methods allowing a variety of functional systems to be
developed in combination with the unit's sequence functions. When our unique MCB extension serial interface is
used, for example, up to fifteen devices (electronic load units and/or power supplies) can be controlled on-line
from a single general-purpose interface.

1-3
Chapter 1: General
1.3 Operation Manual and ROM Version
This manual applies to products equipped with any of ROM versions 2.00 to 2.09.
When contacting us with a question about one of our products, please provide us with the following information
concerning the product:
- Type
- ROM version
- Manufacturing number (indicated on the product rear panel)
For information on how to confirm which ROM version you have, see Section 2.5, "Operational Check" of Chapter 2.
WARNING
If you are not familiar with this type of electronic load unit, or are attempting to reinstall such
a unit, be sure to first read the "Safety Precautions" and Chapter 2, "Installation and
Preparation," in order to ensure that you conduct all specified work correctly.