B+K precision 8500B Series User manual

Contents

1 General Information 5

1.1 Product Overview 5

1.2 Package Contents 5

1.3 Product Dimensions 6

1.4 Rackmount Installation 6

1.5 Front Panel Overview 6

1.5.1 Combination Keys 6

1.6 Rear Panel Overview 8

1.7 Display Overview 8

2 Getting Started 10

2.1 Input Power 10

2.2 Fuse Requirements 10

2.2.1 Fuse Replacement 10

2.3 Input Connections 11

2.4 Preliminary Check 11

2.4.1 Verify AC Input Voltage 11

2.4.2 Self-test Errors 11

2.4.3 Input Check 12

2.4.4 Check Model and Firmware Version 12

3 Front Panel Operation 13

3.1 Local Mode/Remote Mode 13

3.2 Constant Current (CC) Mode 13

3.2.1 Congure CC Parameters 13

3.3 Slew Rate Measurement and Actual Transition time 14

3.4 Constant Voltage (CV) Mode 14

3.4.1 Congure CV Parameters 14

3.5 Constant Power (CW) Mode 14

3.5.1 Congure CW Parameters 14

3.6 Constant Resistance (CR) Mode 15

3.6.1 Congure CR Parameters 15

4 Front Panel Operation 16

4.1 Local Mode/Remote Mode 16

4.2 Constant Current (CC) Mode 16

4.2.1 Congure CC Parameters 16

4.3 Slew Rate Measurement and Actual Transition time 17

4.4 Constant Voltage (CV) Mode 17

4.4.1 Congure CV Parameters 17

4.5 Constant Power (CW) Mode 17

4.5.1 Congure CW Parameters 17

4.6 Constant Resistance (CR) Mode 18

4.6.1 Congure CR Parameters 18

4.7 CR-LED Test Function 18

4.7.1 Setup 18

5 Rear Panel Functions 19

5.1 Remote Sensing 19

5.2 External Triggering 19

5.3 Current Monitoring (I Monitor) 20

6 Advanced Functions 21

6.1 Short Operation 21

6.2 Short-circuit Analog Function 21

6.3 Transient Operation 21

6.3.1 CC Mode 22

6.3.2 CV, CW, and CR modes 22

6.4 LIST Operation 22

6.4.1 Congure List 23

6.4.2 Run List 23

6.4.3 Disable List Mode 24

6.5 Battery Test Function 24

6.5.1 Test Conguration 24

6.5.2 Enable Battery Test Mode 25

6.5.3 Recall Battery File 25

6.5.4 Start Battery Test 25

6.6 Program Mode 25

6.6.1 Example: Small AC/DC power supply test 25

6.6.2 Start Auto Test File 30

6.6.3 Recall Test File 30

6.7 Measurement of Voltage Rise Time 30

6.7.1 Set initial Voltage and Final Voltage 30

6.8 Ripple Function 31

7 Conguration Functions 32

7.1 VON Function 32

7.2 Menu Operation 32

7.3 System Menu 32

7.4 Menu Options 32

7.5 System Menu (System) 33

7.6 Cong Menu 34

8 System Settings 35

8.1 Run Recall Edit 35

8.2 To recall the settings 35

8.3 To run the OPP test 35

8.4 Key Lock 35

8.5 Restore Factory Default Settings 36

8.5.1 Congure Power-On State 36

8.5.2 Load On Knob 37

8.5.3 Congure Trigger Source 37

8.5.4 Save/Recall Instrument Settings 37

8.5.5 Select Storage Group 38

8.5.6 Save Settings 38

8.5.7 Recall Settings 38

8.5.8 Display Input On Timer 39

8.5.9 Remote Interface Setup 39

8.5.10 RS-232 39

8.5.11 CONFIG Menu 40

8.5.11.1 Von Operation 40

8.5.12 Congure Protection Settings 40

8.5.13 PROTECT MENU 40

8.5.14 Max-P A-Limit P-Limit Time 40

8.5.15 Overcurrent Protection (OCP) 41

8.5.16 Overpower Protection (OPP) 42

8.5.17 Recall OPP File 43

8.5.18 Overvoltage Protection (OVP) 44

8.5.19 Overtemperature Protection (OTP) 44

8.5.20 Reverse Voltage Protection (LRV/RRV) 44

8.5.21 Congure Timed Input 44

8.5.22 Measurement Congurations 45

8.5.23 CR LED Function 46

8.5.24 Remote Sensing 46

8.5.25 External Triggering 47

8.5.26 Current Monitoring (I Monitor) 47

9 Protection Functions 48

9.1 OCP Test Function 48

9.2 OPP Test Function 49

9.3 OPP TEST 49

9.4 Over Voltage Protection (OVP) 49

9.5 Over Current Protection (OCP) 50

9.6 Over Power Protection (OPP) 50

9.7 Over Temperature Protection (OTP) 50

9.8 Reverse Voltage Protection (LRV) 51

10 Remote Operation 52

10.1 Interface Connection 52

10.2 Serial Interface 52

10.2.1 GPIB 52

10.2.2 USBTMC 52

10.2.3 Remote Commands 52

11 Troubleshooting Guide 53

11.1 General 53

11.2 Remote Control 53

11.3 Error Information References 53

11.4 Exception handling 53

12 Service Information 55

13 LIMITED THREE-YEAR WARRANTY 56

General Information

1.1 Product Overview

The 8500B Series DC Electronic Loads are versatile instruments used for static and dynamic testing of DC power supplies,

batteries, DC-to-DC converters, battery chargers, and other applications including fuel-cell, and solar cell test. Primary

modes include constant voltage (CV), constant current (CC), constant resistance (CR), and constant power (CW). A

wide range of dynamic loading applications can also be simulated through user-programmable slew rates, load levels,

duration, and conducting voltage. Further, transient, list mode, battery mode, and LED modes further extend testing

capabilities. Versatile triggering options allow the dynamic load behavior to be synchronized with other events. The DC

load is remotely programmable via the TTL serial interface. This interface requires 0-5V signal levels and can connect

to typical serial ports via an adapter such as the IT-E132B.

Features:

•CC/CV/CR/CW operating modes

•List mode

•Transient mode

•Measurement speed up to 40 kHz

•Remote sense function

•Battery test function

•OCP and OPP automatic test

•CR-LED function

•Store/recall up to 100 setups

•Analog current monitoring

•Adjustable slew rate in CC mode

•OVP/OCP/OPP/OTP and reverse voltage protection

1.2 Package Contents

Please inspect the instrument mechanically and electrically upon receiving it. Unpack all items from the shipping carton,

and check for any obvious signs of physical damage that may have occurred during transportation. Report any damage

to the shipping agent immediately. Save the original packing carton for possible future reshipment. Every instrument is

shipped with the following contents:

•8500B series DC Electronic load

•IT-E132B USB to TTL adapter

•AC Power Cord

•Certicate of Calibration

•Test Report

Verify that all items above are included. If anything is missing, please contact B&K Precision.

1.3 Product Dimensions

All models are designed to t in a standard 19-inch rackmount. The dimensions are shown in Figure 1.1.

Figure 1.1 External Dimensions - Half-rack models

1.4 Rackmount Installation

The instrument can be installed in a standard 19 inch rack. For half-rack models, the optional rackmount kit IT-E151 is

required. Figure 1.2 shows one of the half-rack sized units using the IT-E151 rackmount kit. This rackmount kit also

accomodates up to two half-rack models installed side by side.

Figure 1.2 Half-Rack sized Unit

1.5 Front Panel Overview

See Figure 1.3.

1.5.1 Combination Keys

Press button rst and then other keys to activate the more advanced functions.

+Turn short circuit on or oﬀ.

Item Description

1 VFD Display

2 Power Switch and Function Keys

3 Numeric Input and Advanced Functions

4 Mode keys and Input Control

5 Navigation Keys

6 Input Terminals

7 Rotary Input Knob

Figure 1.3 Front Panel

+Start or stop transient condition.

+Set LIST operation parameters.

+Store the DC Load state in non-volatile memory.

+Turn on or oﬀ battery testing function.

+Enter auto test function.

+Display product’s Model/SN/Version.

+System menu setting

+Congure menu setting

+Press this button if you need a pause when runing an auto test le.

+Cause an immediate trigger.

+Enter OCP test function.

+Set detailed parameters in CC/CV/CW/CRmode.

+Enter OPP test function.

+Recall the DC Load state from non-volatile memory.

+Key lock function

1.6 Rear Panel Overview

Item Description

1 Power Input and Fuse Holder

2 AC Voltage Switch

3 Current Monitor Output

4 Remote Sense and Trigger Input

5 TTL (5V) Communication DE-9 Connector

1.7 Display Overview

Item Description

1 Measured Voltage

2 Measured Current

3 Measured Power

4 Set Value

5 Input Oﬀ indicator, lit when input is oﬀ

6 Operation mode indicators (CC, CV, CW, CR)

12 Remote control active indicator

13 Error indicator

14 Waiting for Trigger indicator

15 Timer indicator

16 External indicator

16 Remote Sense active indicator

17 Protection event indicator

18 Auto range

19 Key Lock indicator

20 Shift indicator

Getting Started

Before connecting and powering up the instrument, please review and go through the instructions in this chapter.

2.1 Input Power

The load has a selectable AC input that accepts line voltage input within:

Voltage Frequency

115 V (+/-10%) or 230 V (+/- 10%) 47 Hz – 63 Hz

Table 2.1 Input Power Requirements

Use the line voltage selector switch in the back to switch between 110 V and 220 V operation.

Disconnect all cables including the power cord from the instrument when changing the instrument’s line

voltage. After changing the line voltage setting, ensure the instrument has fuses of the proper ratings and types for

the selected line voltage before applying line power.

2.2 Fuse Requirements

An AC input fuse is necessary when powering the instrument. Below is a table of the fuse required for all models operating

with either 110 VAC or 220 VAC input. See Table ??. The fuses are 5mm x 20mm High Energy Slow Blow type

(ceramic casing with sand ll).

Model Fuse Specication (110 VAC) Fuse Specication (220 VAC)

8542B 1.25 A, 250 V 500 mA, 250 V

8500B 1.25 A, 250 V 500 mA, 250 V

8502B 1.25 A, 250 V 500 mA, 250 V

8510B 3.15 A, 250 V 1.6 A, 250 V

Table 2.2 Fuse Ratings

2.2.1 Fuse Replacement

Follow the steps below to replace to check the fuse:

1. Locate the fuse box next to the AC input connector in the rear panel, see Figure 2.1.

2. With a small at blade screwdriver, insert into the fuse box slit to pull and slide out the fuse box as indicated below.

3. Check and replace fuse (if necessary) for the desired line voltage operation.

Figure 2.1 Fuse Holder

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