B+K precision 8500 User manual

Instruction Manual

Model 8500 300W DC Electronic Load

99 Washington Street

Melrose, MA 02176

Fax 781-665-0780

TestEquipmentDepot.com

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 .Weassumes 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".

Test Equipment Depot - 800.517.8431 - 99 Washington Street Melrose, MA 02176

FAX 781.665.0780 - TestEquipmentDepot.com

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)

___________________________________________________________________

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

345 6

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.

Scroll through front panel.

Entry keys:(numeric keys)

Enter values.

Increasing or decreasing the setup values.

Menu commands.

Power switch ON/OFF

Input terminals.

The Rear Panel

1 2

3 4

4Pin Trigger and Remote sensing connectors.

9-Pin COM port interface connector.

Power switch (110V /220V)

3Pin IEC320 ac input connector. (Power code requires ground

conductor).

Front Panel Annunciators

OFF power off Trigger Indicates that the electronic load is

waiting an initiate and trigger to

occur.

CC Constant current (CC) mode. Sense Indicates that the electronic load is

in Remote sensing state

CV Constant voltage (CV) mode. Error

Aerrors have occurred

CW Constant power (CW) mode. Link

In the communication state

CR Resistance (CR) mode. Rmt Indicates that the electronic load is

in remote state (RS-232). In the

remote state, only the active key is

the Local key.

Tran The input channel is enabled for

transient operation. Shift

Indicates that the shift key has been

pressed.

List List mode is initiated or running.

Lock keyboard is locked by password

Unreg The input is unregulated.

Immediate Action Keys

V-set

Choosing CV mode and setting the input of regulation voltage mode

I-set

Choosing CImode and setting the input of regulation current mode

P-set

Choosing CPmode and setting the input of regulation power mode

R-set

Choosing CR mode and setting the input of regulation resistor mode

Shift

Switch to A setting value

Shift

Switch to B setting value

Shift

store

Press to store an existing electronic load state in non-volatile Memory.

Shift

Recall

Press to recall an existing electronic load state in non-volatile Memory.

Shift

Enter operation Menu.

Shift

Short

Turn on or turn off short circuit Test.

Shift

Tran

Start /Stop transition operation

Shift

Trigger

Causes a trigger to occur.Change the trigger source is IMMIDIATE

Shift

Battery

Battery discharge electronic operation

Shift

S-Tran

Set the transition operation parameter

Input on/off

Enable or disable load input.

Front Panel Menus

8 9

6 05

3ESC I-set V-set

R-set

Input on/off

Shift

P-set ENTER

POWER A B Tran

Store Recall S-Tran Menu

Local Battery Short Trigger

Key Pad

0 through 9 are used for entering numeric values.

Decimal point.

ESC The escape key. It may used to exit any working state.

I-set

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.

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 .IFpress

ENTER

key,

you could get the selected menu function. Press ESC back to the previous menu

selection page.

CONFIG

INITIAL CONFIG Return to the factory default setup value.

POWER-ON RECALL Setting Power-on state of Load.

ON When users turnon the electronic load; the

electronic load setup value will

keep the state of last

time when users turn off the electronic load.

OFF<DEFAULT> Disable this function.

INPUT RECALL 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> When users turn on the electronic load, the

electronic load input will keep the state off.

KEY SOUND SET Keypad sound setting.

ON<DEFAULT> Enable key sound.

OFF Disable key sound.

KNOB LOCK SET Setup Rotary knob lock state.

ON Lock Rotary knob.

OFF<DEFAULT> Unlock Rotary knob.

REMOTE SENSE Setup voltage measurement Mode.

ON The electronic load will measure input voltage

from

the remote sense connector.

OFF<DEFAULT> 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

EXTERNALTrigger signals from the TRIG connector in the

rear panel.

BUS Communication command trigger mode.

BAUDRATE SET Setting baud rate.

9600<DEFAULT>

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

ENTER

directly to disable the key lock

function.

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 Setting operation mode.

FIXED MODE Fixed mode.

LIST MODE Choosing List mode.

CALL LIST FILE Recall list operation file.

EDIT LIST FILE Edit list operation file.

LIST STORE MODE Us

ers can choose 4 kind of memory space to save the list

file.

8 X 120 STEPS Total 8 filesand each file have120 list steps.

4 X 250 STEPS Total 4 filesand each file have250 list steps.

2 X 500 STEPS Total 2 filesand each file have500 list steps.

1 X 1000 STEPS Total 1 file and each file have1000 list steps.

EXIT

LOAD ON TIMER

TIMER STATE 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

Test Equipment Depot - 800.517.8431 - 99 Washington Street Melrose, MA 02176

FAX 781.665.0780 - TestEquipmentDepot.com

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