BK PRECISION 8500 300W DC Electronic Load Instruction Manual
Below you will find brief information for DC Electronic Load 8500 8500 300W. The 8500 series Electronic Load is used for design, manufacturing, and evaluation of DC power supplies, batteries, and power components and so on. The Electronic load contains a processor, serial port connector, front-panel keypad and VFD, and other circuits common to the other entire load module. 8500 serial Electronic Load could work in constant current (CC) mode, constant voltage (CV) mode, or constant resistance (CR) mode and constant power (CW) Mode.
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Instruction Manual
1
Model
8500 300W DC Electronic Load
Warranty Information
Certification
We certify that this product met its published specifications at time of shipment from the factory.
Safety Summary
The following general safety precautions must be observed during all phases of operation of this instrument. Failure to comply with these precautions or with specific warnings elsewhere in this manual violates safety standards of design, manufacture, and intended use of the instrument .We assumes no liability for the customer’s failure to comply with these requirements.
Environmental Conditions
This instrument is intended for indoor use. Pollution degree 2 environments . It is designed to operate at a maximum relative humidity of 95% and at altitudes of up to 2000 meters. Refer to the specifications tables for the ac mains voltage requirements and ambient operating temperature range.
Before Applying Power
Verify that all safety precautions are taken. Note the instrument's external markings described under
"Safety Symbols".
2
Ground The Instrument
This product is a Safety Class 1 instrument (provided with a protective earth terminal). To minimize shock hazard, the instrument chassis and cover must be connected to an electrical ground. The instrument must be connected to the ac power mains through a grounded power cable, with the ground wire firmly connected to an electrical ground (safety ground) at the power outlet. Note: Any interruption of the protective (grounding) conductor or disconnection of the protective earth terminal will cause a potential shock hazard that could result in personal injury.
DO NOT OPERATE IN AN EXPLOSIVE ATMOSPHERE
Do not operate the instrument in the presence of fumes or flammable gases.
KEEP AWAY FROM LIVE CIRCUITS
Operating personnel must not remove instrument covers except as instructed in this Guide for installing or removing electronic load modules. Component replacement and internal adjustments must be made only by qualified service personnel. Do not replace components with power cable connected. Under certain conditions dangerous voltages may exist even with the power cable removed. To avoid injuries always disconnect power, discharge circuits, and remove external voltage sources before touching components.
DO NOT SERVICE OR ADJUST ALONE
Do not try to do some internal service or adjustment unless another person capable of rendering first aid resuscitation is present.
Safety Symbols
Direct current
Alternating current
Both direct and alternating current
Protective earth (ground) terminal
Caution (refer to accompanying documents)
3
___________________________________________________________________
WARNING
The WARNING sign denotes a hazard. It calls attention to a procedure, practice, or the like, which, if not correctly performed or adhered to, could result in personal injury.
Do not proceed beyond a WARNING sign until the indicated conditions are fully understood and met.
___________________________________________________________________
CAUTION
The CAUTION sign denotes a hazard. It calls attention to an operating procedure, or the like, which, if not correctly performed or adhered to, could result in damage to or destruction of part or all of the product. Do not proceed beyond a CAUTION sign until the indicated conditions are fully understood and met.
___________________________________________________________________
Quick Reference
The Front Panel
1 2
5 4 3 6
1
2
3
16-character display shows voltage and current measurements.
Rotary knob
Keypad:
Enable/disable input.
Setup the current, resistance and voltage modes.
Set and reset protection functions.
4
Scroll through front panel.
4 Entry keys:( numeric keys)
5
6
Enter values.
Increasing or decreasing the setup values.
Menu commands.
Power switch ON/OFF
Input terminals.
The Rear Panel
3 4
1 2
1
2
3
4
4 Pin Trigger and Remote sensing connectors.
9-Pin COM port interface connector.
Power switch (110V / 220V)
3 Pin IEC320 ac input connector. (Power code requires ground conductor).
5
Front Panel Annunciators
OFF
CC
CV
CW
CR
power off
Constant current (CC) mode.
Constant voltage (CV) mode.
Constant power (CW) mode.
Resistance (CR) mode.
Tran
The input channel is enabled for transient operation.
List
List mode is initiated or running.
Unreg
The input is unregulated.
Trigger
Indicates that the electronic load is waiting an initiate and trigger to
Sense
occur.
Indicates that the electronic load is in Remote sensing state
Error
Link
Rmt
A errors have occurred
In the communication state
Indicates that the electronic load is in remote state (RS-232). In the remote state, only the active key is
Shift
Lock
the Local key.
Indicates that the shift key has been pressed. keyboard is locked by password
Immediate Action Keys
Choosing CV mode and setting the input of regulation voltage mode
V-set
Choosing CI mode and setting the input of regulation current mode
I-set
Choosing CP mode and setting the input of regulation power mode
P-set
Choosing CR mode and setting the input of regulation resistor mode
R-set
Switch to A setting value
Shift
+
A
6
Shift
+
B
Shift
+ store
Switch to B setting value
Press to store an existing electronic load state in non-volatile Memory.
Trigger
Shift
+
Battery
Shift
+
S-Tran
Input on/off
Press to recall an existing electronic load state in non-volatile Memory.
Shift
+
Recall
Shift
+
Enter operation Menu.
Menu
Shift
+
Short
Shift
+
Tran
Shift
+
Turn on or turn off short circuit Test.
Start /Stop transition operation
Causes a trigger to occur. Change the trigger source is IMMIDIATE
Battery discharge electronic operation
Set the transition operation parameter
Enable or disable load input.
7
Front Panel Menus
POWER
1 2 3 ESC
A B
Tran
4
5 6 0
Store Recall S-Tran Menu
7 8 9
Local Battery Short Trigger
I-set
P-set
V-set
R-set
Shift
Input on/off
ENTER
Key Pad
0
~
9
0 through 9 are used for entering numeric values.
ESC
I-set
Decimal point.
The escape key. It may used to exit any working state.
Choosing CC mode and setup the input current of regulation current mode.
V-set
Choosing CV mode and setup the input voltage of regulation voltage mode.
P-set
Choosing CW mode and setup the input watt of regulation power mode.
R-set
?
Choosing CR mode and setup the input resistor of regulation resistance mode.
Shift
Shift keys.
Input on/off
Power ON/OFF
Scrolling keys let you move through the commands in the presently
Selected function menu. Bring up the next command in the list. Function menus are circular; you can return to the starting position by continuous pressing the key.
? Go back to the previous command in the list .Function menus
Are circular; you can return to the starting position by continuous pressing the key.
ENTER
Confirmation key.
8
Menu Operation
Press Menu to indicate operation mode .View the menu in VFD and using ? and
? to scroll through the completely menu list as following .IF press
ENTER
key, you could get the selected menu function. Press
ESC
back to the previous menu selection page.
MENU
CONFIG
INITIAL CONFIG
POWER-ON RECALL
ON
Return to the factory default setup value.
Setting Power-on state of Load.
OFF<DEFAULT>
INPUT RECALL
When users turn on the electronic load; the electronic load setup value will keep the state of last time when users turn off the electronic load.
Disable this function.
Setup of the electronic load input state in Power on.
ON
When users turn on the electronic load; the electronic load input will keep the state of last time when users turn off the electronic load.
OFF<DEFAULT>
KEY SOUND SET
ON<DEFAULT>
When users turn on the electronic load, the electronic load input will keep the state off.
Keypad sound setting.
Enable key sound.
OFF
KNOB LOCK SET
Disable key sound.
Setup Rotary knob lock state.
ON
Lock Rotary knob.
OFF<DEFAULT>
REMOTE SENSE
Unlock Rotary knob.
Setup voltage measurement Mode.
ON
OFF<DEFAULT>
The electronic load will measure input voltage from the remote sense connector.
The electronic load will measure input voltage from the front panel connector.
TRIGGER SOURCE
Choosing the trigger signals source.
IMMEDIATE<DEF>
Trigger signals from
Shift
+
Trigger
key
EXTERNAL
Trigger signals from the TRIG connector in the rear panel.
Communication command trigger mode.
BUS
BAUDRATE SET
Setting baud rate.
9600<DEFAULT>
9
9600
19200
38400
COMM. PARITY SET
Command parity setting.
NONE<DEFAULT>
EVEN
ODD
ADDRESS SET
Setting communication Flow mode
KEY LOCK SET
Setting keypad password.
Press function.
ENTER
directly to disable the key lock
EXIT
SYSTTEM SET
MAX CURRENT SET
Setup the Maximum current.
MAX POWER SET
Setup the Maximum Power.
MAX VOLTAGE SET
Setup the Maximum Voltage.
EXIT
LIST SET
MODE SET
FIXED MODE
LIST MODE
Setting operation mode.
Fixed mode.
Choosing List mode.
CALL LIST FILE
EDIT LIST FILE
Recall list operation file.
Edit list operation file.
LIST STORE MODE
Users can choose 4 kind of memory space to save the list file.
Total 8 files and each file have120 list steps.
Total 4 files and each file have250 list steps.
8 X 120 STEPS
4 X 250 STEPS
2 X 500 STEPS
1 X 1000 STEPS
EXIT
LOAD ON TIMER
Total 2 files and each file have500 list steps.
Total 1 file and each file have1000 list steps.
TIMER STATE
ON
Setting LOAD ON timer state
When users choose the timer state ON, and then turn on the electronic load input, the LOAD ON
TIMER will start working, and when the LOAD
ON TIMER is reach the setup time, the electronic load input will turn off automatically,.
OFF<DEFAULT>
TIMER SET
Setting time of LOAD ON timer,
EXIT
EXIT
10
General Information
Document Orientation
This manual describes the operation of the Model 8500 DC Electronic Loads. Unless otherwise noted, all units will be referred to by the description "electronic load" throughout this User's manual. The following documents and software are shipped with your electronic load.
This User's Guide (this document), contains installation, checkout, front panel information and detailed programming information.
The Getting Started Map will help you find the information you need to complete the specific task that you want to accomplish. Refer to the table of contents or index of each guide for a complete list of the information contained within.
Getting Started Map
Task
Checking out the unit
Verifying proper operation
Using the front panel
Calibrating the unit
Using the front panel
Front panel keys
Front panel examples
Using the programming interface
RS-232 interface
Remote operation mode
Protocol information
Controller Program and Software driver:
Power View PV8500 software
Calibration PC8500 software
Active driver PD-8500 OCX software
Where to find information
User’s Guide
User’s Guide
User’s Guide
User’s Guide
CD-ROM
Options and Accessories
Options
IT-E151 Rack mounts kit: for install one or two 8500 series load on the 19 inch rack.
ITE-131 isolated communication cable: This cable converts the Electronic Load’s serial port (TTL 5V level) to PC RS232 interface
.
11
Accessories
Power cord
User’s manual
Software CD-Rom
Description
The 8500 serial Electronic Load is used for design, manufacturing, and evaluation of
DC power supplies, batteries, and power components and so on. The Electronic load contains a processor, serial port connector, front-panel keypad and VFD, and other circuits common to the other entire load module.
8500 serial Electronic Load could work in constant current (CC) mode, constant voltage (CV) mode, or constant resistance (CR) mode and constant power (CW)
Mode.
Features And Capabilities
• High accuracy and high resolution
• Capable to work with constant current (CC), constant voltage (CV), constant resistance (CR) mode and constant power (CW) operation.
• Serial port interface-DB9-RS232 port.
• Triggered input and measurement functions.
• Within the controlled keypad in the front panel
• Built-in pulse generator for continuous, pulsed, and toggled transient mode operation.
• Over voltage, over current, overpower, and over temperature protection.
• Electronic load calibrate by Software.
• Fan speed control by temperature.
• VFD display
• Short circuit test
• Battery testing function.
Front Panel Controls
The front panel has keyboard controls for setting the input voltage, current and resistance. The panel display provides digital readouts of a number of functions including the inputs. Annunciators display the operating status of the electronic load.
12
Remote Programming
The electronic load may be remotely programmed from the computer via the IT-E131 isolated communication cable.
Operating Modes
The four modes of operation are:
1: Constant current (CC).
2: Constant voltage (CV).
3: Constant resistance (CR).
4: Constant power (CW)
Constant Current( CC) Mode
In this mode, the electronic load will sink a current in accordance with the programmed value regardless of the input voltage. CC mode can be set with front panel keys. The CC mode parameters are discussed in the following paragraphs.
I
LOAD
CURRENT
CURRENT
SETTING
LOAD INPUT
VOLTAGE
V
CONSTANTCURRENT MODE
Constant Resistance (CR) Mode
In this mode, the module will sink a current linearly proportional to the input voltage in accordance with the programmed resistance. The CR mode can be set at the front panel. The CR mode parameters are described in the following paragraph
13
I
LOAD
CURRENT
SLOPE
RESISTANCE
SETTING
LOAD INPUT
VOLTAGE
V
CONSTANT RESISTANCE MODE
Constant Voltage (CV) Mode
In this mode, the electronic load will attempt to sink enough current to control the source voltage to the programmed value. The module acts as a shunt voltage regulator when operating in the CV mode. The CV mode can be set at the front panel.
The CV mode parameters are described in the following paragraphs.
V
LOAD INPUT
VOLTAGE
VOLT
SETTING
LOAD CURRENT I
CONSTANT VOLTAGE MODE
Constant Power (CW) Mode
In this mode, the electronic loads will consumption power accordance with the programmed value regardless of the input voltage. The CW mode can be set with front panel keys. The CW mode parameters are discussed in the following paragraphs.
14
V
LOAD INPUT V2
VOLTAGE
V3
POWER
SETTING
I 2 I 3
LOAD
CURRENT
CONSTANT POWER MODE
I
Transient Operation
Transient operation enables the electronic load to periodically switch between two load levels, as might be required for testing power supplies. A power supply's regulation and transient characteristics can be evaluated by monitoring the supply's output voltage under varying combinations of load levels, frequency, and duty cycle.
Transient operation can be turned on and off at the front panel or PC via the IT-E131 isolated communication cable. Before you turn on transient operation, you should set the desired mode of operation as well as all of the parameters associated with transient operation. Transient operation may be used in the CC, CR, or CV or CW modes and can be setup in continuous, pulsed, or toggled operation mode.
Continuous
Generates a repetitive pulse stream the toggles between two load levels and change the state between value A and value B.
10A
5A
2.0ms
3.0ms
Continuous Transient Operation
15
Pulse
Switch to value B as receiving one trigger signal , taking the pulse time(TWD) of value
B , Load will return to Value A .
10A
5A
TWD
10ms
TWD
10ms
TRIG TRIG
Pulsed Transient Operation
Trigger Mode
Switching the state between value A and value B once receiving a triggering signal
10A
5A
TRG
TRG
Toggled Transient Operation
List Operation
List mode lets you generate complex sequences of input changes with rapid, precise timing, which may be synchronized with internal or external signals.
List operation can be changed by edit every step value and time in list operation. The parameter of list operation include the group file name, input step setting (the max steps is 1000 steps),time of one step( 1mS~1h) and setting value of one step. In CC mode, dwell time range is 1mS to 6S, which also have an associated value. Note that lists data can only be saved in total 1000 steps memory of 4 situations.
GROUP Total = 1000 steps
16
1
2
1000 steps
500 steps
500 steps
250 steps 250 steps 4 250 steps 250 steps
8 120 steps
120 steps
120 steps
120 steps
120 steps
120 steps
120 steps
120 steps
When receiving one trigger signal, it will start the list operation until receiving another trigger signal or finish the List operation.
Trigger
0 1 2 3 4 5
List count=1 List count=2
List sequence
Triggered Operation
The electronic load has various triggering modes to allow synchronization with other test equipment or events. Such as:
Keypad triggering mode: Press
Shift
+
Trigger
to trigger the electronic load.
TTL triggering mode: Send a high pulse with a constant time more than 5m Sec to the trigger terminals in rear panel to trigger the electronic load.
Command triggering mode: Send triggering command to the electronic load via the serial port.
17
Input Control
Short On/Off
Load can simulate a short circuit at its input by turning the load on with full-scale current. The short circuit can be toggled on/off at the front panel using the
Shift
+
Short
.Short operation is not influence the operation setting current value , When short operation is on OFF state , Load back to the original setting state.
The actual value of the electronic short is dependent on the mode and current range that are active when the short is turned on.
In CC, CW and CR mode, the max short-circuit current value is 1.2 times of the current range. In CV mode, short-circuit operation is same as the operation of setting
CV to 0V.
NOTE
Turning the
S h o r r t t T e s t current that the software current limit operates, which may turn the input off.
Turning the short circuit on does not affect the programmed settings, and the load input will return to the previously programmed values when the short is turned off.
Input On/Off
Electronic load's input can be toggled on/off at the front panel. Turning the input off
(zero current) does not affect the programmed settings. The input will return to the previously programmed values when the input is turned on again.
NOTE
The Input On/Off command supersedes the mode commands and Short Test
On/Off command.
Operation Range
Work in the range of Rated Current, Rated voltage and Rated Power, The figure is as following:
18
Rated voltage
Rated power
Input current I Rated current
Operation mode change state
Rated voltage
C
Software Power Limit
Software Current Limit
A
Input current I Rated current
Protection Features
Electronic load includes the following protection features:
Over Voltage
If input voltage exceeds the voltage limit, Load will turn OFF the input,
Buzzer is mooing. VFD display as following:
OVER VOLTAGE
19
Over Current
When work in the CR or CC and CP mode, input current is ascending continuously, the load current will be limited by a current limit circuit, Load will work in the over current protection state , VFD display the information as CC.
When work in CV mode and transition mode and List mode, Input current exceeds the current limit, Buzzer is mooing, VFD display the flashing current value.
Over Power
If the input power exceeds the power limit in the normal operation mode, Load will work in the over power protection state. VFD displays the information as CW.
When work in transition mode and list mode, If the input power exceeds the power limit. Buzzer is mooing, VFD display the flashing current value and voltage value.
Reverse Voltage
This feature protects the load module in case the input DC voltage lines are connected with wrong polarity, if a reverse voltage condition is detected, Buzzer is mooing. VFD display as following:
REVERSE VOLTAGE
Over Temperature
If internal power components ‘s temperature exceeds safe limits (80? ), Over temperature protection is on work . Load will turn off the input and Buzzer is mooing,
VFD display as following:
OVER HEAT
Remote Sense Function
When work in CV, CR and CP mode, if load consumes biggish current, it will cause one depressed voltage in the connection line between tested machine and terminals of Load. In order to assure testing precision, Load provides one remote testing terminals in the rear panel, Users could test the output terminals voltage of tested machine through it. Users should set the Load in REMOTE mode before using the function.
20
Saving And Recalling Settings
The electronic load has internal registers in which settings (mode, current, voltage, resistance, transient level, etc.).Users could use
Shift
+
Store
Shift
+
Recall
to save and recall the relative data as following:
CC value /CW value /CR value /CV value
and
Transition current A value /Transition current B value /Transition voltage A value
/Transition voltage B value / Transition power A value /Transition power B value
/Transition Resistance A value /Transition Resistance B value
Current A pulse width time/ Current B pulse width time/Voltage A pulse width time/
Voltage B pulse width time /Power A pulse width time/Power B pulse width time
/Resistance A pulse width time /Resistance B width time
Transition current testing mode/Transition voltage testing mode/Transition power testing mode /Transition resistance testing mode
Max current value / Max voltage value / Max power value
Battery Testing
Load provides the function of discharging electronic of testing battery. Setting discharging current by press
I-set
, then press
Shift
+
Battery
to set the mix voltage, Battery testing operation is run. When Battery Voltage setting value is lower than the limited voltage; Load will turn off the input. VFD will display the capacity of testing battery, Press
Shift
+
Battery
and return the normal mode.
21
V
Battery Voltage
Min voltage
I
Load Sink Current
t t
External Control Signals
Electronic Load has a 4-pin connector mounted on its rear panel. These signals are described in the following paragraphs.
Remote Sensing:
SENSE (+) and SENSE (–) are the remote sensing inputs. By eliminating the effect of the inevitable voltage drop in the load leads, remote sensing provides greater accuracy by allowing the load to regulate directly at the source's output terminals.
TRIG:
A TTL-compatible input that responds to external edge trigger signal. A trigger applied to this input can be used to change settings (voltage, current, resistance, etc.), toggle between settings in transient-toggle mode, or generate a pulse in transient-pulse mode.
22
Installation
Inspection
Damage
When you receive your electronic load, inspect it for any obvious damage that may have occurred during shipment. If there is damage, notify the shipping carrier and nearest Agent office and Support Office immediately.
Items Supplied
The following user replaceable items are included with your electronic load.
Item Description
Power Cord Users will get one of the power cord.
User's Guide Contains installation, checkout, and front panel information and
Software CD-Rom Programming information
Calibration Report The Instrument calibration report.
Cleaning
Use a dry cloth or one slightly dampened with water to clean the external case parts.
Do not attempt to clean internally.
___________________________________________________________________
WARNING
To prevent electric shock, unplug unit before cleaning.
___________________________________________________________________
Location
The outline diagram in following figure gives the dimensions of your electronic load.
The electronic load must be installed in a location that allows sufficient space at the sides and back of the unit for adequate air circulation.
23
Installation
Dimension
:101mmW x 215mm H x 366mm D
Terminal length: 29.4mm Feet height:17.5mm
Outline Diagram
Unit (mm)
24
Carrying Handle
Bench Operation
A fan cools the electronic load by drawing air through the button and sides and exhausting it out the back.
Minimum clearances for bench operation are 25 mm along the sides.
___________________________________________________________________
CAUTION
Do not block the fan exhaust at the rear of the Load.
___________________________________________________________________
Rack Mounting
The 8500 serial electronic load can be mounted in a standard 19-inch rack. Rack mount kits are available as Option
IT-E151
. The electronic load can be mounted in a standard 19-inch rack panel or enclosures using an Option IT-E151 rack mount kit. A rack mount kit for joining two half-rack units is also available by using Option
IT-E151
.
25
Rack Installation
Elevation for Installation one electronic load in a standard 19-inch rack
Side elevation for Installation one electronic load in a standard 19-inch rack
Elevation for Installation two electronic loads in a standard 19-inch rack
26
NOTE
Remove the carrying handle and the two plastic ears before rack-mounting the instrument. To remove the handle, grasp the handle by sides and pull outwards and rotate it to a special position to let the arrow on the handle oppose the another arrow on the plastic ears, then pull the handle outward. After removing the handle, you can use a screwdriver to remove the two plastic ears.
27
Trigger And Remote Sensing Connections
A 4-pin connector and a quick-disconnect mating plug are provided on rear panel for accessing input signals and remote sensing, all leads connected to the connector should be twisted and shielded to maintain the instrument's specified performance.
Remote Sensing: sense (
+ ) and sense ( - ) Used to connect the remote sensing leads to the power source.
TRIG IN: TRIG (IN) A TTL-compatible input that responds to external edge trigger signal. A trigger applied to this input can be used to change settings (voltage, current, resistance, etc.), toggle between settings in transient-toggle mode, or generate a pulse in transient-pulse mode.
TRIG GND: TRIG (
) Provides the common connection for the trigger signals.
Computer Connections
The electronic load can be controlled through a PC serial port.
RS-232 Interface
The electronic loads have an serial port programming interface; all applicable commands are available through serial port programming. It available to connect the electronic load to any computer or terminal with the IT-E131 isolated communication cable.
PC
IT-E131 communication cable
IT
RS232
IT-E131 ISOLATED
COMMUNICATION CABLE
ISOLATION TTL(5V)
859666668889942311
RX
TX
Load
28
CAUTION
Users must use IT-E131 to realize the remote operation between PC and 8500 series electronic load.
Turn-On Checkout
Introduction
Successful tests in this chapter provide a high degree of confidence that the electronic load is operating properly.
Checkout Procedure
The test in this section checks for proper operation of the electronic load. If you have not already done so, connect the power cord to the unit and plug it in.
Procedure Display
1. Turn the unit on.
The electronic Load undergoes a self-test when you First turn it on.
Explanation
During self test, all segments are briefly lit
2. Wait for 1s after turn on electronic load.
3. Wait for another 2S.
EPROM ERROR
ERROR CAL.DATA
EEPROM damage or
Lost data of last power off
Run well if no such display, system will go to the step 3 directly.
EEPROM Lost calibration data
Run well if no such display, system will go to the step 4 directly.
29
4. Press Shift button and
? ?
keys .
LOAD MODEL:IT85XX
SN: XXX-XXX-XXX
VER x.xx
Display the information of the product Type, series number version of software.
5. Press
ESC
button
0.000V 0.000A
6.Press ? ?
0.000W I: 0.000A
Display the actual input voltage and current value.
Display the actual power value and setting value.
In Case Of Trouble
Electronic load failure to run during power-on operation. The test of following in this section help you to solve the possible problem When you turn on the power of electronic load .
1) Make sure if you have connected the power cord to the unit and plug it in.
Power switch have been pressed.
2) Check the power voltage setting.
Work voltage of load have two type 110V or 220V , Please make sure it is right voltage accordance to the voltage in your area. You could change the voltage setting through dial the switch in the rear panel.
3) Check the fuse of load.
If fuse is blowout, please change it as following specification.
Model Fuse specification Fuse specification
8500
(110VAC)
T0.5A 250V
(220VAC)
T0.3A 250V
30
4) Location of Fuse
FUSE
Front Panel Operation
Introduction:
Here is what you will find in this chapter:
A complete description of the front panel controls
Front panel programming examples.
31
Display
16-character fluorescent display for showing measurements and programmed values.
Annunciators
Annunciators light to indicate operating modes and status conditions:
OFF
power off
Trigger
Indicates that the electronic load is waiting an initiate and trigger to
CC
CV
The selected input channel is in the constant current (CC) mode.
The selected input channel is in the constant voltage (CV) mode. occur.
Sense
Indicates that the electronic load is in sense state
Error
A errors have occurred
CW
CR
Tran
The selected input channel is in the constant power (CW) mode.
The selected input channel is in the resistance (CR) mode.
Link
Rmt
The selected input channel is enabled for transient operation.
List
A list is initiated or running.
Shift
Lock
In the communication state
Indicates that the electronic load is in remote state (RS-232). In the remote state, only the active key is the Local key.
Indicates that the shift key has been pressed. keyboard is the mode for password
Function keys
Main Function:
Set up a constant current output.
Set up a constant power output.
Set up a constant resistance output
Select CC, CR and CV and CW modes.
Select Current, Resistance and Voltage levels.
Set Trigger and Transient levels.
Set up front panel measurements.
Recall the stored data
Battery testing
Short-circuit testing
32
Entry Keys
Entry keys let you:
Enter programming values.
Increasing or decreasing setup values.
Press ? or ? select the front panel menu parameters.
Power
The Power switch turns the electronic load power on or off.
Example
I-set (set up a constant current from 0 to Max current )
Set up a constant DC current input is the first main function of programmable DC electronic load,
8500 serial electronic load provides two methods to set up the constant DC current output by using the number keyboard and the rotary button. Please see the following operation procedure.
Procedure
STEP 1
Operation details
Press
I-set
VFD display
CURRENT=0.000A
STEP 2
STEP 3
STEP 4
Enter the password or jump the step 4 if your password for reentering
Enter the original value which displayed in the LCD or enter a new value by using number keys or Rotary knob to adjust the voltage value
PASSWORD:
CURRENT=*.***A
Press
ENTER
to confirm
0.000V *.***A
Setup the output current at 4.33A.
Method 1: To set up by using number keyboard
Step1. Press
I-set
button.
33
Step2. Press numeric button to enter the current value 4.33.
Step3. Press
ENTER
button to confirm the current value.
Method 2: To set up
I-set
by using Rotary SW
(1) If the key board is unlocked by password, directly adjust the Rotary SW button, and voltage will be continually changed from the previews value according the rotation.
At the beginning, the cursor will be shown on the last number of the value which is indicated on the VFD, you can move the cursor to the first number, second number etc by using number buttons, and then adjust the Rotary SW to change each number, and let it stay at *.** A. Please see the following description. Then press I-set to confirm the value.
0.00A 0.00V
0.0W 4.33A
Procedure:
Step1. Press
I-set
button,
Step2. Adjust the Rotary knob to change the value, the operation is as the same as item (1)
Step5. Press
ENTER
button to confirm the current value.
P-set (set up a constant power from 0 to Max power)
8500 series electronic load can be set up for a constant power.
Constant power setup procedure is as following:
Procedure Operation details
Step 1
Press
P-set
Step 2 Enter a new value by using numeric keys or Rotary knob to adjust the voltage value
VFD display
POWER =0.000W
POWER=*.***W
34
Step 3
Press
ENTER
to confirm.
0.000W P:*.000W
R-set (set up a constant resistance from 0.1
O to
4000
O
)
8500 series electronic load can be setup for a constant resistance.
Constant resistance setup procedure is as following:
VFD display Procedure Operation details
Step 1
Press
R-set
Step 2 enter a new value by using numeric keys or Rotary knob to adjust the resistance value
RESISTANCE =0000R
RESISTANCE=*****R
Step 3
0.000W R:0000R
Press
ENTER
to confirm.
V-set (set up a constant voltage from 1.5V to
Max voltage)
8500 electronic load can be setup for a constant voltage.
Constant voltage setup procedure is as following:
Procedure Operation details VFD display
Step 1
Step 2
Press
V-set
enter a new value by using numeric keys or Rotary knob to adjust the resistance value
VOLTAGE=1.500V
VOLTAGE=*.***V
Step 3
Press
ENTER
to confirm.
0.000W V:3.000V
35
Shift + Store
Procedure Operation details
Step 1
Press
Shift
and
Store
Step 2
VFD display
STORE 1
Press
ENTER
to confirm.
Store the relative data
Shift + Recall
Procedure Operation details
Step 1
Press
Shift
and
Recall
Step 2
Press
ENTER
to confirm
VFD display
RECALL 1
Recall the saving data
Out On/Off input setting
Use
Input on/off
to change the state of electronic load. Switch on to off state by press
Input on/off
.
Menu description
procedure The operation methods
Step 1
Press
Shift
+
Menu
button
Step 2
The VFD display the menu functions one by one, user can use
?
Enter
?
?
?
?
?
VFD display
CONFIG
INITIAL CONFIG
POWER-ON LOAD
POWER-ON RECALL
KEY SOUND SET
KNOB LOCK SET
REMOTE SENCE
36
the ? and
? button to change the selecting function, press
ENTER
button to execute the selection function or step into the next sub-menu
?
?
?
?
?
?
?
?
?
?
ENTER
?
?
?
Enter
?
?
?
?
Enter
?
?
TRIGGER SOURUSE
BAUDRATE SET
COMM.PARITY SET
ADDRESS SET
KEY LOCK SET
EXIT
SYSTEM SET
MAX CURRENT SET
MAX POWER SET
MAX VOLTAGE SET
EXIT
LIST SET
MODE SET
CALL LIST FILE
EDIT LIST FILE
LIST STORE MODE
EXIT
LOAD ON TIMER
TIMER STATE
TIMER SET
EXIT
EXIT
Transition Testing Operation
Users could switch between the two different current and voltage in the transition mode; it could test the transition specialty of power supply. Users could use front panel or communication interface( TRAN ON AND TRAN OFF) to make it work or not,
Please setting parameters before transition operation. Include Transition setting value,
Constant pulse width setting and Transition Pulse width setting and Transition testing mode. The mix pulse width is 500uS.The Max pulse width is 6S. Transition Operation only could work in CC and CV mode.
Users can choose one of the three operation modes: Continuous, Pulse and Toggling mode.
Transition Parameter Setting
Users could press
Shift
S-Tran
+
Shift
+
S-Tran
to set the transition parameter.
LEVEL A = *****
Setup value A
37
WIDTH A = ******
Setup time width of value A
ENTER
ENTER
ENTER
ENTER
LEVEL B=*****
WIDTH B= *****
CONTINUOUS
PULSE
TOGGLED
Setup value B
Setup time width of value B
Choose one of the three transition modes
ENTER
Finish transition setting
Continuous Transient Operation
In this mode, electronic load will generates a repetitive pulse stream that toggles between two load levels. ; Load could switch the state between two setting value (value A and value B).
In this following example, assume that the CC mode is active; the applicable transient operation parameters have been set as follows.
For example:
Continuous mode, current level A =5A, width = 2mS. Current level B =10A, width =
3ms. Testing machine output voltage is 12V.
10A
5A
2.0ms
3.0ms
Continuous Transient Operation
Action
1. On the Function keypad, press
Input on/off
button to turn off the load input.
2. Press
Shift
and
S-Tran ,
setting LEVEL A=5A, WIDTH A=3mS, LEVER B=10A,
WIDTH B=2mS, transition mode is CONTINOUS.
.
3. Press
Shift
and
Tran
to activate the transient mode.
4. Press
Shift
and
Tran
again to stop the transient operation.
38
Pulse Transient Operation
In this mode, generates a transient pulse of programmable width when pulsed transient operation is in effect.
For example: When load receiving one trigger signal, it will switch to 10A current value, and taking 10mS to return the current value of 5A.
10A
5A
TWD
10ms
TWD
10ms
TRIG TRIG
Pulsed Transient Operation
Action
1. On the Function keypad, press
Input on/off
button to turn off the load input.
2. Press
Shift
and
S-Tran
,
set LEVER A=5A, LEVER B=10A, WIDTH B=10mS,
Transition mode is PULSE .
3. Press
Shift
and
Tran
to activate the transient mode.
4. Press
Shift
more pulse.
and
Trigger
to start another pulse. Press
5. Press
Shift
and
Tran
Shift
and
Trigger
, get again to stop the transient operation.
Toggled Transient Operation
In this mode, after transition operation start, Load could change the input between the main level and the transient level when toggled transient operation is in effect.
For example:
When Load receives one trigger signal, Load current will switch between 5A and
10A.
39
10A
5A
TRG
TRG
Action
Toggled Transient Operation
1. Press
Shift
and mode is PULSE .
S-Tran
, Setting LEVER A=5A, LEVER B=10A, Transition
2. Press
Shift
and
Tran
to activate the transient mode.
3. Press
Shift
and
Trigger
switch to the current value of 10A.
4. Press
Shift
and
Trigger
, switch between 5A and 10A.
5. Press
Shift
and
Tran
again to stop the transient operation.
List Operation
Users can use the front panel keypad or Power View 8500(PV-8500) software to programming the list sequence. Please refer to the software user’s guide.
The following example will help you how to do the list operation in front panel.
Trigger
0 1 2 3 4 5
List count=1 List count=2
List sequence
Action
1) Press the button of
Input on/off
, execute the input of Load I in OFF state.
40
2) Press
Shift
and
Menu
, move cursor to the option of menu of CONFIG ,
Press
ENTER
into the next step menu ,move cursor to TRIGGER
SOURCE . Press
ENTER
and move cursor to IMMEDIATE <DEF>, setting trigger source mode is panel IMMEDIATE mode.
3) Press
ENTER
to confirm.
4) Press
ESC
to the previous menu , move cursor to LIST SET .
5) Press
ENTER
into the next step menu .move cursor to EDIT LIST FILE.
6) Press
ENTER
into the next step menu, move cursor to CURRENT LIST, select CURRENT MODE.
7) Press
ENTER
, move cursor to REPEAT . Setup LIST is in cycle mode.
8) Press
ENTER
to confirm, setup the list steps = 5.
9) Press
ENTER
to confirm, setup step 1 current =3A.
10) Press
ENTER
to confirm, setup step 1 width=6mS.
11) Repeat 7) and 8) operation , set current and width of one step 0A, 5mS;2A,
4mS;6A,2mS;0A,5mS.
12) Press
ENTER to confirm, Menu STORE LIST FILE 1. save file in group1.
13)
Move cursor to
Mode Set
, press
ENTER
to enter into the next step menu to s
et mode is <LIST MODE >
14)
Press
ENTER
to confirm
15) Press
ESC
, Press
Input on/off
, Make Load in ON state.
16) Press
Shift
and
Trigger
, make list operation run or stop.
17) Stop the list operation mode. Move cursor to LIST SET , Press
ENTER
, move cursor to Mode Set in option menu, press
ENTER
, Enter into next step menu . Select mode is <FIXED MODE> ?
18) Press
ENTER
to confirm.
41
Specifications
Parameter
Input rating Voltage
( 0 ~ 40 ? )
Current
Power
Load
Regulation
Range
CV Mode
Regulation
CC Mode
Regulation
CR Mode
Regulation
8500
0 to 120V
1mA to 30A
300 W
Accuracy Resolution
0-18V
0-120V / 500V
0-3A
0-30A / 15A
±(0.05%+0.02%FS)
1mV
±(0.05%+0.025%FS) 10mV
±(0.1%+0.1%FS)
0.1mA
±(0.2%+0.15%FS)
1mA
1.5-18V
±(0.05%+0.02%FS)
1mV
1.5-120V/500V
±(0.05%+0.025%FS) 10mV
0-3A
±(0.1%+0.1%FS)
0.1mA
0-30A /15A
0.1-10O
±(0.2%+0.15%FS)
1mA
±(1%+0.3%FS)
0.001O
10-99O ±(1%+0.3%FS) 0.01O
10%
100-999O ±(1%+0.3%FS) 0. 1O
1K-4KO
±(1%+0.8%FS)
1O
10%
CW Mode
Regulation
0-100W
±(1%+0.1%FS)
1mW
±(1%+0.1%FS)
10mW
10%
100-300W
10%
Current
Measurement
Voltage
Measurement
Power
Measurement
0-3A
±(0.1% + 0.1%FS)
0.1mA
±(0.2%+0.15%FS)
1mA 0-30A /15A
1.5-18V
±(0.02% + 0.02%FS) 1mV
1.5-120V/500V
±(0.02% + 0.025%FS) 10mV
0-100W
±(1%+0.1%FS)
1mW
100-300W
±(1%+0.1%FS)
10mW
10%
10%
Battery testing function
Input=0.8-120V / 500V Max measurement capacity= 999A/H Resolution =10mA
Timer range=1~60000sec
Weight
42
11.6lb. (5.25 kg)
Remote Operation Mode
DB9 in the rear panel of electronic load could connect with RS-232 through on TTL connector. The following information may help you to know how to control the output of Electronic load through PC.
1. Communication Setting
Ensure setting the same baud rate in the communication address of
Electronic load and computer software .otherwise, the communication will fail.
You can adjust the baud rate and communication address in Menu button in front panel of machine. Address of the Electronic load. ( 0 ~ 0XFE, default value is 0)
1. Baud rate : (4800,9600,19200,38400, default value is 9600)
2. Data bit : 8
3. Stop bit : 1
4. sum: (NONE,ODD,EVEN,INITIAL SETTING is NONE)
PARITY = NONE
Start
Bit
8 Data Bits
Stop
Bit
2. DB9 Interface Details
DB9 in the rear panel of electronic load is TTL (5V) level signal .it can be connecting with standard PC interface through the IT-E131 isolated communication cable.
43
PC
IT-E131 communication cable
IT IT-E131 ISOLATED
COMMUNICATION CABLE
RS232 ISOLATION TTL(5V)
859666668889942311
RX
TX
Load
CAUTION
Forbidden to connect DB9 connector in Electronic load directly with PC or other RS232 port.
3. Frame Format
Frame length is 26 bytes. Details as following:
AAH Addres s
Comman d
4—25bytes are information content
Description :
Parity code
1. Start bit is AAH, occupies one byte.
2. Address range from 0 to FE, occupies one byte.
3. Each command occupies one byte. Following is the command details.
20H Selecting the Remote control mode
21H Selecting the input on/off state
22H Setting the max input voltage
23H Reading the max setup input voltage.
24H Setting max input current
25H Reading the max setup input current.
26H Setting max input power.
27H Reading the max setup input power.
28H Selecting CC/CV/CW/CR operation mode of Electronic load.
44
29H Reading the operation mode.
2AH Setting CC mode current value
2BH Reading CC mode current value
2CH Setting CV mode voltage value
2DH Reading CV mode voltage value
2EH Setting CW mode watt value
2FH Reading CW mode watt value
30H Setting CR mode resistance value
31H Reading CR mode resistance value
32H Setting CC mode transient current and timer parameter.
33H Reading CC mode transient parameter
34H Setting CV mode transient voltage and timer parameter.
35H Reading CV mode transient parameter
36H Setting CW mode transient watt and timer parameter
37H Reading CW mode transient parameter
38H Setting CR mode transient resistance and timer parameter
39H Reading CR mode transient parameter
3AH Selecting the list operation mode (CC/CV/CW/CR)
3BH Reading the list operation mode.
3CH Setting the list repeat mode (ONCE / REPEAT)
3DH Reading the list repeat mode.
3EH Setting the number of list steps.
3FH Reading the number of list steps
40H Setting one of the step’s current and time values.
41H Reading one of the step’s current and time values.
42H Setting one of the step’s voltage and time values.
43H Reading one of the step’s voltage and time values
44H Setting one of the step’s power and time values
45H Setting one of the step’s power and time values.
46H Setting one of the step’s resistance and time values
47H Reading one of the step’s resistance and time values
48H Setting list file name.
49H Reading list file name.
4AH Selection the memory space mode for storing list steps.
4BH Reading the memory space mode for storing list steps.
4CH Save list file in appointed area.
4DH Get the list file from the appointed area.
4EH Setting min voltage value in battery testing mode.
4FH Reading min voltage value in battery testing mode
50H Setting timer value of FOR LOAD ON
51H Reading timer value of FOR LOAD ON
52H Disable/Enable timer of FOR LOAD ON
45
53H Reading timer state of FOR LOAD ON
54H Setting communication address
55H Enable/Disable LOCAL control mode.
56H Enable/Disable remote sense mode.
57H Reading the state of remote sense mode.
58H Selecting trigger source.
59H Reading trigger source.
5AH Sending a trigger signal to trigging the electronic load.
5BH Saving user’s setting value in appointed memory area for recall.
5CH Recall user’s setting value in appointed memory area.
5DH Selecting FIXED/SHORT/TRAN/LIST/BATTERY function mode.
5EH Getting function mode state.
5FH Reading input voltage, current, power and relative state
60H Enter the calibration mode
61H Getting the calibration mode state.
62H Calibrate voltage value.
63H Sending the actual input voltage to calibration program.
64H Calibrate current value.
65H Sending the actual input current to calibration program.
66H Store the calibration data to EEPROM.
67H Setting calibration information.
68H Reading calibration information.
69H Restore the factory default calibration data.
6AH Reading product’s model, series number and version information.
6BH Reading the information of bar code.
6CH Setting information of bar code
12H The return information of command operation in electronic load.
NOTE
If control output of electronic through PC, please setting Electronic load is on
PC control state. Command is 20H. Make a calibration on input of electronic
Load, Ensure the calibration protection mode is OFF state when setting calibration information.
If electronic load in calibration mode, user’s can’t change the input and operation mode of electronic load
4. From 4 th
byte to 25 th
byte are information contents.
5. 26 th
is sum code, is the sum of the former 25 bytes.
46
4. Communication Protocol
1. Selecting the Remote control mode( 20H)
1 st
byte
2 nd
byte
3 rd
byte
4 th
.byte
Start bit ( AAH )
Address (0—0XFE)
Command( 20H)
Operation mode( 0 is front panel operation mode , 1 is remote operation mode )
System reserve
Sum code
From 5 th
to 25 th
byte
26 th
byte
NOTE
Front panel operation state is not in effect if electronic load is in calibration mode
.
2. Selecting the input on/off state ( 21H)
1 st
byte
2 nd
byte
Start bit ( AAH )
Address(0—0XFE)
3 rd
byte
4 th
byte
Command( 21H)
Input state( 0 is OFF, 1is ON)
From 5 th
to 25 th
byte System reserve
From26 th
byte Sum code
3. Setting / Reading max input voltage( 22H/23H)
1 st
byte
2 nd
byte
3 rd
byte
4 th
byte
Start bit ( AAH )
Address (0—0XFE)
Command( 22H/23H)
The Lowest byte of max voltage value
5 th
byte
6 th
byte
The lower byte of max voltage value.
The higher byte of max voltage value.
7 th
byte The highest byte of max voltage value.
From 8 th
to 25 th
byte System reserve.
26 th
byte Sum code.
47
NOTE
Represent a voltage upper limit value by 4 bytes of Hex. Lower bytes are in the front location, higher bytes are in the later location. 1 represent 1mV.For Example : The voltage upper limit is 16.000V, the hex code is 0X00003EB0, then the 4th byte is
0XB0, 5th byte is 0X3E, 6th byte is 0X00, 7TH byte is 0X00?
4. Setting / Reading the max input current .
( 24H/25H)
1 st
byte
2 nd
byte
3 rd
byte
4 th
byte
Start bit ( AAH )
Address(0—0XFE)
Command( 24H/25H)
The Lowest byte of max current value
5 th
byte
6 th
byte
The Lowest byte of max current value
The higher byte of max current value
7 th
byte The highest byte of max current value
From 8 th
to 25 th
byte System reserve
26 th
bye Sum code
NOTE
Represent an current value by 4 bytes of Hex .Lower bytes are in the front location, higher bytes are in the later location.1 represent 0.1mA,If setting upper limit is
3.0000A, the hex code is 0X00007530, then the 4th byte is 0X30, 5th is 0X75, 6th is 0X00, 7th is 0X00?
5. Setting / Reading max input power( 26H/27H)
1 st
byte
2 nd
byte
3 rd
byte
4 th
byte
5 th
byte
6 th
byte
7 th
byte
Start bit ( AAH )
Address (0—0XFE)
Command( 26H/27H)
The lowest byte of max power value.
The lower byte of max power value
The higher byte of max power value.
The highest byte of max power value.
48
From 8 th
to 25 th
byte System reserve
26 th
byte Sum code
NOTE
Represent power value by 4 bytes of Hex. Lower bytes are in the
Front location, higher bytes are in the later location. 1 represents 1mW. If setting upper value is 200.000W, the hex code is 0X00030d40, then the 4th byte is
0X40, 5th is 0X0d, 6th is 0X03, 7th is 0X00?
6. Selecting / Reading CC/CV/CW/CR operation mode of Electronic load.( 28H/29H)
1 st
byte
2 nd
byte
3 rd
byte
4 th
byte
From 5 th
To 25 th
byte
26 th
byte
Start bit ( AAH )
Address (0—0XFE)
Command( 28H/29H)
Mode( 0 is CC mode, 1 is CV mode , 2 is CW mode , 3 is CR mode )
System reserve
Sum code
7. Setting / Reading CC mode current value
( 2AH/2BH)
1 st
byte
2 nd
byte
3 rd
byte
4 th
byte
5 th
byte
6 th
byte
7 th
byte
From 8 th
To 25 th
byte
Start bit ( AAH )
Address (0—0XFE)
Command ( 2AH/2BH)
The lowest byte of current value
The lower byte of current value.
The higher byte of current value.
The highest byte of current value.
System reserve
49
27 th
byte Sum code
NOTE
Represent current by 4 bytes of Hex. Lower bytes are in the front location, higher bytes are in the later location. For example: current is 3.0000A, Hex code is 0X00007530, NO. 4 bye is 0X30, NO. 5 bye is 0X75, NO. 6 bye is 0X00,
NO. 7 bye is 0X00?
8. Setting / Reading CV mode voltage value.
( 2CH/2DH)
1 st
byte
2 nd
byte
3 rd
byte
4 th
byte
5 th
byte
6 th
byte
7 th
byte
From 8 th
to 25 th byte
26 th
byte
Start bit ( AAH )
Address (0—0XFE)
Command( 2CH/2DH)
The lowest byte of voltage value.
The lower byte of voltage value.
The higher byte of voltage value.
The highest byte of voltage value.
System reserve
Sum code
NOTE
Represent voltage by 4 bytes of Hex. Lower bytes are in the front location, higher bytes are in the later location. For example :voltage is 16.000V, Hex code is
0X00003EB0, 4th byte 0XB0, 5TH byte is 0X3E, 6th byte is 0X00, 7th byte is 0X00?
9. Setting / Reading CW mode watt value
( 2EH/2FH)
1 st
byte
2 nd
byte
Start bit ( AAH )
Address (0—0XFE)
50
3 rd
byte
4 th
byte
5 th
byte
6 th
byte
7 th
byte
8 th
to 25 th
byte
26 th
byte
Command( 2EH/2FH)
The lowest byte of max power value
The lower byte of max power value
The higher byte of max power value
The highest byte of max power value
System reserve
Sum code
NOTE
Represent power by 4 bytes of Hex. Lower bytes are in the front location, higher bytes are in the later location. For example :power is 200.000W, Hex is
0X00030d40, 4th byte is 0X40, 5th byte is 0X0d, 6th byte is 0X03, 7th byte is
0X00?
10. Setting / Reading CR mode resistance value
( 30H/31H)
1 st
byte
2 nd
byte
3 rd
byte
4 th
byte
5 th
byte
6 th
byte
7 th
byte
8 th
to 25 th
byte
26 th
byte
Start bit ( AAH )
Address (0—0XFE)
Command( 30H/31H)
The lowest byte of resistance value.
The lower byte of resistance value.
The higher byte of resistance value.
The highest byte of resistance value.
System reserve
Sum code
NOTE
Represent resistance value by 4 bytes of Hex. Lower bytes are in the front location, higher bytes are in the later location. If resistance value is
200.000R, Hex code is 0X00030d40, 4TH byte is 0X40, 5TH byte is 0X0d, 6th byte is 0X03, 7th byte is 0X00?
51
11. Setting /Reading CC mode transient current and timer parameter. ( 32H/33H)
1 st
byte
2 nd
byte
3 rd
byte
From 4 th
byte to 7 th byte
From 8 th
byte to 9 th byte.
From 10 th
to 13 th byte
From 14 th
to 15 th byte
16 th
byte
Start bit ( AAH )
Address (0—0XFE)
Command( 32H/33H)
Setting value of current A (Lower bytes are in the front location, higher bytes are in the later location.)
Time value of timer A ((Lower bytes are in the front location, higher bytes are in the later location)
(1 represent 0.1mS)
Setting value of current B (Lower bytes are in the front location, higher bytes are in the later location)
Time value of timer B (Lower bytes are in the front location, higher bytes are in the later location)
(1 represent 0.1mS)
Transition operation mode (0 is CONTINUES, 1 is PULSE, 2 is
TOGGLED)
System reserve From 17 th
to 25 th byte
26 th
byte Sum code
12. Setting /Reading CV mode transient voltage and timer parameter.( 34H/35H)
1 st
byte
2 nd
byte
3 rd
byte
From 4 th
to 7 th
byte.
Start bit ( AAH )
Address (0—0XFE)
Command( 34H/35H)
Setting value of voltage A (Lower bytes are in the front location, higher bytes are in the later location)
From 8 th
to 9th byte. Time value of timer A (Lower bytes are in the front location, higher bytes are in the later location)
(1represent 0.1mS)
From 10 th
to 13 th byte
From 14 th
to 15 th byte
Setting value of voltage B(Lower bytes are in the front location, higher bytes are in the later location)
Time value of timer B (Lower bytes are in the front location, higher bytes are in the later location)
(1represent 0.1mS)
52
16 th
byte Transient operation mode (0 is CONTINUES,1 is PULSE,2 is
TOGGLED)
System reserve From 17 th
to 25 th byte
26 th
byte Sum code
13. Setting /Reading CW mode transient watt and timer parameter( 36H/37H)
1 st
byte
2 nd
byte
Start bit ( AAH )
Address (0—0XFE)
3 rd
byte
Command( 36H/37H)
From 4 th
to 7 th
byte Setting value of power A (Lower bytes are in the front location, higher bytes are in the later location)
From 8 th
to 9 th
byte Time value of timer A (Lower bytes are in the front location, higher bytes are in the later location)
(1 represent 0.1mS)
From 10 th
to 13 th byte
From 14 th
to 15 th byte
Setting value of power B(Lower bytes are in the front location, higher bytes are in the later location)
Time value of timer B (Lower bytes are in the front location, higher bytes are in the later location)
16 th
byte
(1 represent 0.1mS)
Transition operation mode (0 is CONTINUES,1is PULSE,2 is
TOGGLED)
From 17 th
to 25 th byte
26 th
byte
System reserve
Sum code
14. Setting /Reading CR mode transient resistance and timer parameter( 38H/39H)
1 st
byte
2 nd
byte
3 rd
byte
From 4 th
byte to 7 th byte
Start bit ( AAH )
Address (0—0XFE)
Command( 38H/39H)
Setting value of resistance A (Lower bytes are in the front location, higher bytes are in the later location)
53
From 8 th
byte to 9 th byte.
From 10
13
15
16 th th th th
byte to
byte
From 14 th
byte to
byte
byte
Time value of timer A (Lower bytes are in the front location, higher bytes are in the later location)
(1 represent 0.1mS)
Setting value of resistance B (Lower bytes are in the front location, higher bytes are in the later location)
Time value of timer B (Lower bytes are in the front location, higher bytes are in the later location)
(1 represent 0.1mS)
Transition operation mode (0 is CONTINUES,1 is PULSE,2 is
TOGGLED)
System reserve 17 th
byte to 25 th byte
26 th
byte Sum code
15. Selecting /Reading the list operation mode
(CC/CV/CW/CR)( 3AH/3BH)
1 st
byte
2 nd
byte
3 rd
byte
4 th
byte
Start bit ( AAH )
Address (0—0XFE)
Command( 3AH/3BH)
LIST operation mode( 0is CC mode, 1 is CV mode ,2 is CW mode,3 is CR mode)
From 5 th to 25 byte System reserve
26 th
byte Sum code
16. Setting /Reading the list repeat mode.
(3CH/3DH)
1 st
byte
2 nd
byte
3 rd
byte
Start bit ( AAH )
Address (0—0XFE)
Command( 3CH/3DH)
4 th
byte LIST repeat operation mode(0 is ONCE, 1 is REPEAT)
From 5 th
to 25 th
byte System reserve
26 th
byte Sum code
54
17. Setting / Reading the number of list steps.
(3EH/3FH)
1 st
byte
2 nd
byte
Start bit ( AAH )
Address (0—0XFE)
3 rd
byte
Command( 3EH/3FH)
From 4 th to 5 th
byte LIST steps
From 6 th
to 25 th
byte System reserve
26 th
byte Sum code
18. Setting / Reading one of the step’s current and time values. (40H/41H)
1 st
byte
2 nd
byte
3 rd
byte
From 4 th
byte to 5 th
Start bit ( AAH )
Address (0—0XFE)
Command( 40H/41H)
Appointed one step byte
From 6 th
to 9 th
byte Current value of current step (Lower bytes are in the front location, higher bytes are in the later location)
From 10 th
to 11 th byte
Time value of current step (Lower bytes are in the front location, higher bytes are in the later location)
(1 represent 0.1MS)
From 12 th
to 25 th byte
26 th
byte
System reserve
Sum code
19. Setting / Reading one of the step’s voltage and time values. (42H/43H)
1 st
byte
2 nd
byte
3 rd
byte
From 4 th to 5 th byte
Start bit ( AAH )
Address (0—0XFE)
Command( 42H/43H)
Appointed one step
55
From 6 th
byte to 9 th byte
From 10 th
to 11 th byte
Voltage value of current step (Lower bytes are in the front location, higher bytes are in the later location)
Time value of current step (Lower bytes are in the front location, higher bytes are in the later location)
(1 represent 0.1MS)
System reserve From 12 th
to 25 th byte
26 th
byte Sum code
20. Setting / Reading one of the step’s power and time values. (44H/45H)
1 st
byte
2 nd
byte
Start bit ( AAH )
Address (0—0XFE)
3 rd
byte
Command( 44H/45H)
4 th
byte Appointed one step
From 5 th
to 8 th
byte Power value of current step (Lower bytes are in the front location, higher bytes are in the later location)
From 9 th
to 10 th
byte Time value of current step (Lower bytes are in the front location, higher bytes are in the later location) (1 represent 0.1MS)
System reserve From 11 th
to 25 th byte
26 th
byte Sum code
21. Setting / Reading one of the step’s power and time values. (46H/47H)
1 st
byte
2 nd
byte
Start bit ( AAH )
Address (0—0XFE)
3 rd
byte
Command ( 46H/47H)
From 4 th
to 5 th
byte Appointed one step
From 6 th
to 9 th
byte Resistance value of current step (Lower bytes are in the front location, higher bytes are in the later location)
From 10 th
to 11 th byte
Time value of current step (Lower bytes are in the front location, higher bytes are in the later location)
(1 represent 0.1MS)
From 12 th
to 25 th byte
System reserve
56
26 th
byte Sum code
22. Setting / Reading List file name (48H/49H)
1 st
byte
2 nd
byte
Start bit ( AAH )
Address (0—0XFE)
3 rd
byte
Command ( 48H/49H)
From 4 th
to 13 th
byte LIST file name (ASSIC code )
From 14 th
to 25 th
System reserve byte
26 th
byte Sum code
23. Selection / Reading the memory space mode for storing list steps. (4AH/4BH)
1 st
byte
2 nd
byte
Start bit ( AAH )
Address (0—0XFE)
3 rd
byte
26 th
byte
Command( 4AH/4BH)
4 th
byte partition mode (1 | 2 | 4 | 8)
From 5 th
to 25 th
byte System reserve
Sum code
24. Save / Get list file in appointed area..
(4CH/4DH)
1 st
byte
2 nd
byte
Start bit ( AAH )
Address (0—0XFE)
3 rd
byte
26 th
byte
Command( 4CH/4DH)
4 th
byte Storing area 1 ~ 8)
From 5 th
to 25 th
byte System reserve
Sum code
57
25. Setting / Reading min voltage value in battery testing mode.( 4EH/4FH)
1 st
byte
2 nd
byte
3 rd
byte
4 th
byte
5 th
byte
Start bit ( AAH )
Address (0—0XFE)
Command( 4EH/4FH)
The lowest byte of voltage value.
The lower byte of voltage value.
6 th
byte
7 th
byte
The higher byte of voltage value.
The highest byte of voltage value.
From 8 th
to 25 th
byte System reserve
26 th
byte Sum code
26. Setting / Reading timer value of FOR LOAD
ON (50H/51H)
1 st
byte
2 nd
byte
Start bit ( AAH )
Address (0—0XFE)
3 rd
byte
26 th
byte
Command( 50H/51H)
4 th
byte
5 th
byte
The lowest byte of time value in timer. (1 represent 1S)
The highest byte of time value in timer.
From 8 th
to 25 th
byte System reserve
Sum code
Time unit in Timer is S, 1S is represented by 1.
27. Disable / Enable timer of FOR LOAD ON
(52H);
Reading timer state of FOR LOAD ON(53H)
1 st
byte
2 nd
byte
3 rd
byte
Start bit ( AAH )
Address (0—0XFE)
Command( 52H/53H)
58
4 th
byte Timer state (0 is disable ,1 is enable )
From 5 th
to 25 th
byte System reserve
26 th
byte Sum code
28. Setting communication address (54H)
1 st
byte
2 nd
byte
3 rd
byte
4 th
byte
Start bit ( AAH )
Address (0—0XFE)
Command ( 54H)
New communication address (0~0XFE)
From 5 th
to 25 th
byte System reserve
26 th
byte Sum code
29. Enable/Disable LOCAL control mode. (55H)
1 st
byte
2 nd
byte
3 rd
byte
4 th
byte
Start bit ( AAH )
Address (0—0XFE)
Command ( 55H)
State of LOCAL button(0:disable,1:enable “)
From 5 th
to 25 th
byte System reserve
26 th
byte Sum code
30.Enable / Disable remote sense mode.(56H)
Reading the state of remote sense mode.(57H)
1 st
byte
2 nd
byte
3 rd
byte
4 th
byte
5 th
to 25 th
byte
26 th
byte
Start bit ( AAH )
Address (0—0XFE)
Command( 56H/57H)
Remote mode state (0:disable,1:enable)
System reserve
Sum code
31. Selecting / Reading trigger source. (58H/59H)
1 st
byte
2 nd
byte
3 rd
byte
Start bit ( AAH )
Address (0—0XFE)
Command ( 58H/59H)
59
4 th
byte Trigger mode (0:Keypad,1 External,2.command)
From 5 th
to 25 th
byte System reserve
26 th
byte Sum code
32. Sending a trigger signal to trigging the electronic load. (5AH)
1 st
byte
2 nd
byte
3 rd
byte
Start bit ( AAH )
Address (0—0XFE)
Command( 5AH)
From 4 th
to 25 th
byte System reserve
26 th
byte Sum code
33. Saving / Recall user’s setting value in appointed memory area for recall. (5BH/5CH)
1 st
byte
2 nd
byte
Start bit ( AAH )
Address (0—0XFE)
3 rd
byte
26 th
byte
Command( 5BH/5CH)
4 th
byte Storing area ( )
From 5 th
to 25 th
byte System reserve
Sum code
34. Selecting / Getting FIXED/SHORT/TRAN/LIST/
BATTERY function mode. (5DH/5EH)
1 st
byte
2 nd
byte
3 rd
byte
4 th
byte
Start bit ( AAH )
Address (0—0XFE)
Command( 5DH/5EH)
Work mode (0:FIXED,1:SHORT, 2:TRANSITION,3:LIST,4: BATTERY)
From 5 th
to 25 th
byte System reserve
26 th
byte Sum code
60
35.Reading input voltage, current, power and relative state. (5FH)
1 st
byte
2 nd
byte
Start bit ( AAH )
Address (0—0XFE)
3 rd
byte
Command ( 5FH)
From 4 th
to 7 th
byte Actual input voltage value (Lower bytes are in the front location, higher bytes are in the later location)
From 8 th
to 11 th
byte Actual input current value (Lower bytes are in the front location, higher bytes are in the later location)
Actual input power value (Lower bytes are in the front location, higher bytes are in the later location)
From 12 th
to 15 th byte
16 th
byte
From 17 th
to 18 th byte
From 19 th
to 25 th byte
26 th
byte
Operation state register
Demand state register
System reserve
Sum code
3
4
5
6
0
1
2
7
8
9
2
3
4
5
6
BIT Signal Meaning
Operation state register
0
1
CAL
WTG
Calculate the new demarcate coefficient
Wait for trigger signal
REM
OUT
LOCAL
SENSE
LOT
Remote control mode
Output state
LOCAL button state (0 is represent “not in effect “,1 is represent ‘in effect “)
Remote testing mode
FOR LOAD ON timer state
RV
OV
OC
OP
OT
SV
CC
CV
CP
CR
Demand state register
Input reverse voltage
Over voltage
Over current
Over power
Over temperature
Not connect remote terminal
Constant current
Constant voltage
Constant power
Constant resistance
61
36. Enter the calibration mode( 60H)
1 st
byte
2 nd
byte
3 rd
byte
4 th
byte
5 th
byte
Start bit ( AAH )
Address (0—0XFE)
Command( 60H)
Calibration mode select(0:disable;1:enable)
Calibration password( 0X85H)
6 th
byte
Calibration password( 0X11H or 0X12H)
From 7 th
to 25 th
byte System reserve
26 th
byte Sum code
NOTE
If Load is not in protection state, users could do the calibration operation.
37. Getting the calibration mode state( 61H)
1 st
byte Start bit ( AAH )
2 nd
byte
3 rd
byte
Address (0—0XFE)
Command( 61H)
4 th
byte Calibration protection state
From 5 th
to 25 th
byte System
26 th
byte Sum code
NOTE
Represent calibration protection state by one byte. Each byte is defined as:
From high to low
7 6 5 4 3 2 1 0
0 byte: protection state, 0 represent not in the protection state , 1 represent in protection state.
62
38. Calibrate voltage value( 62H)
1 st
byte
2 nd
byte
Start bit ( AAH )
Address (0—0XFE)
3 rd
byte
26 th
byte
Command( 62H)
4 th
byte
Voltage calibration point( 1~4)
From 5 th
to 25 th
byte System reserve
Sum code
NOTE
Current calibration standard points have four: 1, 2, 3, 4.
39. Sending the actual input voltage to calibration program( 63H)
1 st
byte
2 nd
byte
3 rd
byte
4 th
byte
5 th
byte
6 th
byte
7 th
byte
Start bit ( AAH )
Address (0—0XFE)
Command( 63H)
The lowest byte of actual voltage
The lower byte of actual voltage
The higher byte of actual voltage.
The highest byte of actual voltage.
From 8 th
to 25 th
byte System reserve
26 th
byte Sum code
40. Calibrate current value( 64H)
1 st
byte Start bit ( AAH )
2 nd
byte
3 rd
byte
Address (0—0XFE)
Command( 64H)
4 th
byte Current calibration point ( 1~4)
From 5 th
to 25 th
byte System reserve
26 th
byte Sum code
63
NOTE
Current calibration standard points have four: 1,2,3,4
41. Sending the actual input current to calibration program (65H)
1 st
byte Start bit ( AAH )
2 nd
byte
3 rd
byte
Address (0—0XFE)
Command( 65H)
4 th
byte
5 th
byte
26 th
byte
The lowest byte of actual current
The lower byte of actual current
6 th
byte
7 th
byte
The higher byte of actual current
The highest byte of actual current
From 8 th
to 25 th
byte System reserve
Sum code
42. Store the calibration data to EEPROM( 66H)
1 st
byte
2 nd
byte
Start bit ( AAH )
Address (0—0XFE)
3 rd
byte
Command ( 66H)
From 4 th
to 25 th
byte System reserve
26 th
byte Sum code
NOTE
Finish the calibration operation, users should save the calibration parameter in
EEPROM with this command; users could use these data in next power on.
43. Setting / Reading calibration information
( 67H/68H)
1 st
byte
2 nd
byte
Start bit ( AAH )
Address (0—0XFE)
64
3 rd
byte
Command( 67H/68H)
From 4 th
to 23 rd
byte Demarcate information( ASIC code)
24 th
byte System reserve
25 th
byte
26 th
byte
System reserve
Sum code
44. Restore the factory default calibration data
( 69H)
1 st
byte
2 nd
byte
Start bit ( AAH )
Address (0—0XFE)
3 rd
byte
Command( 69H)
From 4 th
to 25 th
byte System reserve
26 th
byte Sum code
NOTE
User could use the initial calibration data of factory with this command
.
45. Reading product’s model, series number and version information( 6AH)
1 st
byte
2 nd
byte
Start bit ( AAH )
Address (0—0XFE)
3 rd
byte
Command( 6AH)
From 4 th
to 8 th
byte Mode information ( ASIC code)
9 th
byte The lowest byte of software version number(BCD code)
10 th
byte
From 11 th
to 20 th
The highest byte of software version number(BCD code)
Product series number ( ASIC code) byte
From 21 st
to 25 th byte
26 th
byte
System reserve
Sum code
For example:
65
AA 00
Product’s series number is 000045, product mode is 8511,software version number is
V2.03, data as following
31 38 35 31 31 00 03 02 ZZ ZZ ZZ ZZ ZZ ZZ ZZ ZZ ZZ ZZ XX XX XX XX XX 57
46. Reading information in bar code (6BH)
1 st
byte
2 nd
byte
3 rd
byte
From 4 th
to 22 nd byte
From 23 rd
to 25 th byte
26 th
byte
Start bit ( AAH )
Address (0—0XFE)
Command ( 6BH)
Information in bar code( ASIC ? )
System reserve
Sum code
Bar code rule : All of bar cod of our products is distinguished by the former three characters.
Al
Identity Sub Version Yea Mont Month No. N of one
0 0 1 0 0 4 1 0 0 y y m m 0 0 2 0 1 0
47. Setting information of bar code( 6CH)
1 st
byte
2 nd
byte
3 rd
byte
4 th
to 22 nd
byte
24 th
byte
25 th
byte
26 th
byte
Start bit ( AAH )
Address (0—0XFE)
Command( 6CH)
Product series number( ASIC code)
System reserve
System reserve
Sum code
48. The return information of command operation in electronic load( 12H)
1 st
byte Start bit ( AAH )
66
2 nd
byte
3 rd
byte
Address (0—0XFE)
Command( 12H)
4 th
byte Command calibration result
From 5 th
to 25 th
byte System reserve
26 th
byte Sum code
NOTE
Receiving one frame command and verify them
If verify sum is wrong, return the parameter 90H
If setting parameter is wrong or over brim, return parameter A0H.
If command is not enforce, return to parameter B0H
If command is invalid, return to parameter C0H
Otherwise, return to parameter 80H
NOTE
Receiving one frame command and verify them
If verify sum is correct, return the relative reading data.
If verify sum is wrong , return the verify command( 90H) ?
67
Limited One-Year Warranty
B&K Precision Corp. warrants to the original purchaser that its product and the component parts thereof, will be free from defects in workmanship and materials for a period of one year from the data of purchase.
B&K Precision Corp. will, without charge, repair or replace, at its’ option, defective product or component parts. Returned product must be accompanied by proof of the purchase date in the form a sales receipt.
To obtain warranty coverage in the U.S.A., this product must be registered by completing and mailing the enclosed warranty card to B&K Precision Corp.,
22820 Savi Ranch Parkway, Yorba Linda, CA 92887 within fifteen (15) days from proof of purchase.
Exclusions: This warranty does not apply in the event of misuse or abuse of the product or as a result of unauthorized alterations or repairs. It is void if the serial number is altered, defaced or removed.
B&K Precision Corp. shall not be liable for any consequential damages, including without limitation damages resulting from loss of use. Some states do not allow limitation of incidental or consequential damages, so the above limitation or exclusion may not apply to you.
This warranty gives you specific rights and you may have other rights, which vary from state-to-state.
Model Number: ______________ Date Purchased: __________
68
22820 Savi Ranch Parkway
Yorba Linda, CA 92887
714.921.9095
714.921.6422 Facsimile
Service Information
Warranty Service: Please return the product in the original packaging with proof of purchase to the below address. Clearly state in writing the performance problem and return any leads, connectors and accessories that you are using with the device.
Non-Warranty Service: Return the product in the original packaging to the below address. Clearly state in writing the performance problem and return any leads, connectors and accessories that you are using with the device.
Customers not on open account must include payment in the form of a money order or credit card. For the most current repair charges contact the factory before shipping the product.
Return all merchandise to B&K Precision Corp. with pre-paid shipping. The flat-rate repair charge includes return shipping to locations in North America.
For overnight shipments and non-North America shipping fees contact B&K
Precision Corp..
B&K Precision Corp.
22820 Savi Ranch Parkway
Yorba Linda, CA 92887
Phone: 714- 921-9095
Facsimile: 714-921-6422
Email: [email protected]
Include with the instrument your complete return shipping address, contact name, phone number and description of problem.
69
PN: 481-535-9-001
Printed in China
2005 B&K Precision Corp.
70
22820 Savi Ranch Parkway
Yorba Linda, CA 92887
USA
TEL: 714-921-9095
FAX: 714-921-6422 www.bkprecision.com
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Key Features
- High accuracy and high resolution
- Serial port interface-DB9-RS232 port.
- Triggered input and measurement functions
- Built-in pulse generator for continuous, pulsed, and toggled transient mode operation
- Over voltage, over current, overpower, and over temperature protection
- Electronic load calibrate by Software.
- VFD display
- Short circuit test
- Battery testing function.
