SFL500-12-300-IEEE_技术文档

SFL Series

Programmable DC Electronic Loads

Half-Rack 3U 300W / Full-Rack 3U 1000W

Advanced Features Built-In

• Stable High Speed Current Control (No Dynamic Overshoot/Oscillation) with High Slew Rate (Up to 30A/us) •

• Low Voltage Operation with No Turn-On Delay •

• Seven Operating Modes (CC, CR, CP, CV, EXT, Short, CV+Climit) •

• Large 3.5" Color LCD Screen • Load Terminals on Front and Rear Panel •

• Dynamic (Time / Frequency) Mode (Pulsating Load) • Sequence Operation (Waveform Generation) •

• Sweep Mode Test Function (V/I, OCP, OPP) •

• Built-In Memory Function (store/recall up to eight memory settings) •

• Parallel Operation (up to ten units) • Multi-Channel Triggering (up to ten units) •

• Built-In Protection & Alarms (Current Limit, Power Limit, OTP, OVP, Reverse Connection) •

• Optional IEEE (w/DIDO) Interface • Optional Ripple Measurement Interface •

Trusted • Innovative • Reliable

Overall Product Description

Overview:

– The SFL DC Electronic Load Series is multi-functional programmable DC Electronic load series that offers power levels of 300W (3U Half Rack)

and 1kW (3U Full-Rack) with high speed response and stable operation at low voltage and can be used as an electronic load for thedesign,

evaluation and manufacture of regulated DC power supplies, fuel cells, solar cells, batteries and components.

– This DC Electronic Load Series offers seven Load Operating Modes (CC, CR, CP, CV, EXT, CV+Climit) that allow the user to connect and test products

under various different operating conditions in design/development evaluation and production testing environments.

– There are two different Dynamic operating modes offered to the user that include Dynamic Frequency Mode (which allows the user to

switch the load between two different settings for a single pulse or repeating pulse profile) and Dynamic Time Mode (which allows the

user to program up to 16 load settings which can be programmed for a repeating pulse profile). Both modes also provide a rear panel TRIG

OUT function for waveform scope viewing or for synchronization with other test equipment.

– A Sequence function is built-in where simple/complex waveforms can be created (up to 1024 time steps) using Excel-base control software

and Digital Interface communication (USB or IEEE) and a Sweep Mode feature is also available which allows for product testing where

devices/products require test sweeps in CR mode (Sweep R) for V-I characteristic testing, CC mode (Sweep C) for overcurrent protection

characteristic testing or CP (Sweep P) for overpower protection characteristic testing.

– There is also a VModefunction that automatically changes the load mode (when voltage is rising or falling) or turns off the load input until the

load voltage reaches a set value, on-board memory for storage/recall of up to eight operational settings and a rear panel Remote Sense

selection switch and connection ports for connection and voltage measurement across the test device.

– Model functions can be set up via the large 3.5” color LCD front panel display (which has oscilloscope-like function keys on the vertical and

horizontal borders). Change second sentence: Using these keys in combination with the four embedded operationg screens (MAIN, MENU,

SYSTEM and MEMORY) allows for adjustment, setup, store and recall of the load operating parameters. These model functions are also

accessible via the built-in USB interface or the optional IEEE Interface.

– Higher power DC load systems (of up to 10kW) are achievable using a Master-Slave unit arrangement and a simple parallel cable connection

from unit-to-unit, with all system control and monitor performed through the Master unit (for easy user interfacing).

– Multi-channel synchronous operation (with triggering) is also available and allows multiple DC electronic loads to be connected to separate

devices by using the same parallel cable connection from unit-to-unit. Synchronized load ON/OFF and Dynamic operation are featured in a

Master-Slave configuration with up to ten units total (up to 10kW total).

– Optional interfaces offered include the IEEE Interface (with a built-in DIDO Interface) and the Ripple Measurement Module (R) Interface.

The IEEE Interface is 488.1 compliant with Instrument Software Drivers available for use. TheDIDO Interface allows for remote interfacing with PLC

controllers and includes isolated control and status of load ON/OFF, Range setting, Alarm Detection/Clear and Sweep Function Pass/Fail status.

– The

R (Ripple Measurement) Interface is used for measuring Output voltage ripple and noise and can separate and measure and display line

frequency, switching voltage or noise voltage ripple (with 100MHz or 20MHz bandwidth) using the Filter function and can also measure and

display the DC voltage, Power or combined DC and ripple/noise voltage added.

– Models are available in 300W and 1000W power levels with Output voltages of 120V (60A and 180A) and 500V (18A and 36A)

and are powered from a universal single-phase AC input (85~264VAC, 47~63Hz).

Key Features:

• Low and High Load Power Rating::

• Parallel Operation:

up to 10kW (ten units)

Half-Rack 300W and Full-Rack 1kW power levels

• Low and High Load Voltage Rating::

120V (60A or 180A) and 500V (12A or 36A)

• Multi-Channel Synchronous Operation:

For separate synchronized unit operation (up to ten units)

• Seven Load Operating Modes: CC, CR, CP, CV, EXT, Short, CV+Climit

• Large 3.5” color LCD multi-functional viewing screen

• Stable High Speed Current Control

(No Dynamic Overshoot/Oscillation)

• Load Terminals: Front and back of unit (w/ terminal

covers). Binding posts on 300W model front panel.

• Low Voltage Operation with No Turn-On Delay

• Built-In USB Interface

• Optional IEEE Interface

(w/ DIDO built-in for PLC interfacing)

• Variable Slew Rate Control: Up to 30A/us

• Dynamic (Frequency or Time) Mode Operation:

For simple pulse profile operation

• Optional R (Ripple Measurement) Interface

(for Output voltage ripple measurements)

• Sequence Mode: For complex waveform generation

• GUI and Software Instrument Drivers available

• Sweep Mode Test Function w/ Display: V-I Test, Over-Current Test,

Over-Power Test

• Complies with to IEC/EN 61010-1, Ed. 3

• VMode Function: to set load rising/falling profile

• Memory Function Built-In: store/recall up to eight load settings

• Protection/Alarms: Current Limit, Power Limit, OTP, OVP, Reverse Connection

• Complies with EN61326-1: 2013 (Class A)

• Two Year Warranty

2 | SFL DC ELECTRONIC LOAD SERIES

Front View: Key Features (300W Model)

13

14

2

3

1

4

5

6

7

8

11

12

10

9

Item

Title

Description

1

2

3

Display

Function keys

MODIFY knob

Large 3.5" Color LCD display that shows set value, measurement value, etc.

Allows the user to select items from the Horizontal and Vertical menus

Continuous rotary knob that increases or decreases a setpoint value

Up/Down Keys: Angled pushbutton keys that increase or decrease a setpoint value

Left/Right Keys: Angled pushbutton keys that select decimal place location

4

CURSOR keys

Returns to the previous operating screen (eg. MENU screen to MAIN screen).

Allows the user to re-enter data

5

CANCEL key

Cancels Remote mode operation (IEEE, USB) and goes to Front Panel Local operation

Clears the OVP/Reverse Connection ALARM

Stops SEQUENCE operation

6

7

8

ENTER key

ON/OFF button

MENU key

Pressed to fix an entered numeric value from keypad (eg. load value) or other selection (eg. SYSTEM reset)

Turns Load Output ON/OFF; lit GREEN when ON; unlit when OFF

Pressing enters into MENU screen or returns to MAIN screen.

Pressing switches between Standby and Startup state

MAIN screen will appear after startup screen and Firmware Version screen

Type B connector, USB 2.0 compliant interface (USBTMC) for controlling the unit remotely

Pressing enters into MEMORY screen or returns to MAIN screen

Front Panel Positive and Negative Binding Post terminals for connection to the Device-Under-Test

Internally connected to the Rear Panel Positive and Negative load terminals

Binding Post terminals for the SFL 300W models only

9

STANDBY switch

10 USB connector

11 MEMORY key

12 LOAD terminals

13 Air Intake slots

14 Product Label

Air inlets for product cooling

Label that identifies product information (Product Series, Voltage/Current/Power, etc.)

SFL DC ELECTRONIC LOAD SERIES | 3

Rear View: Key Features (300W Model)

12

15

1

2

3

10

13

9

4

5

6

8

14

7

11

Item

Title

Description

Connects the optional MASTER/SLAVE connection cable from Master (OUT) to Slave (IN)

Used during parallel operation only or Multi-Channel Synchronous operation

MASTER/SLAVE terminals referenced to minus load terminal

Trigger signal output

1

MASTER/SLAVE IN/OUT connectors

Used as the trigger signal when observing the load waveform in Dynamic mode with a scope or when

synchronizing with other devices

TRIG OUT referenced to Case potential

Input pins for EXTernal voltage control (Load current proportional to Control Voltage)

Control voltage range: 0V to 10V

2

3

TRIG OUT +/- pins

EXTernal Control Input (EXT-IN +/- pins)

EXT-IN terminals referenced to minus load terminal

For connecting remote sense cable

4

5

6

Remote Sense Input (SENSE +/- pins)

EXT/INT Switch

Remote Sense is enabled when the SENSE selection switch is set to EXT

SENSE terminals referenced to minus load terminal

Switch for selecting voltage sense signal

Set to EXT when using remote sense cable

Signal is used when monitoring load current waveform with oscilloscope

Analog voltage proportional to load current (dependent on Load Current Range)

Current Monitor terminals referenced to minus load terminal

Rear panel load busbars (with mounting hardware) for connection to the Device-Under-Test

Internally connected to the Front Panel Positive and Negative load terminals

Busbars with M6 (300W)/M8 (1000W) diameter hole

Current Output Monitor (IMON)

7

LOAD terminals

For connecting AC power cord between AC service and SFL DC Electronic Load

North American or European AC Input linecord available

Single-phase, 85~264VAC, 48-62Hz; 60VA max (300W models)/65VA max (1000W models)

AC Input Main Power switch; Switch depressed to I = ON, depressed to O = OFF

8

9

AC Power Inlet

AC POWER Switch

Optional interface that adds measurement function equivalent to ripple noise measurement using 100MHz

oscilloscope recommended by JEITA standard

Spiked switching noise and line frequency can be separated and measured

Variation found in measurement using oscilloscope can be avoided and measurement time can be reduced

Ripple Measurement terminals referenced to minus load terminal

Used for heated air exhaust ventilation

10

Ripple Measurement Interface

11

12

Air Outlet slots

Port for optional communication Interface

Optional Interface port

IEEE Interface with separate DIDO Digital Control Interface

DIDO Digital Control used for external control and status monitoring

Label describing Model # and Serial #

Label indicating product CE mark compliance

Label indicating product RoHS compliance

13

14

15

Serial Number Label

CE Mark label

RoHS label

4 | SFL DC ELECTRONIC LOAD SERIES

Front Panel Display: Key Features (1000W Model)

14

2

3

13

1

4

5

6

7

8

12

11

10

9

Item

Title

Description

1

2

3

Display

Large 3.5" Color LCD display that shows set value, measurement value, etc.

Allows the user to select items from the Horizontal and Vertical menus

Continuous rotary knob that increases or decreases a setpoint value

FUNCTION Keys

MODIFY knob

Up/Down Keys: Angled pushbutton keys that increase or decrease a setpoint value

Left/Right Keys: Angled pushbutton keys that select decimal place location

Returns to the previous operating screen (eg. MENU screen to MAIN screen)

Allows the user to re-enter data

Cancels Remote mode operation (IEEE, USB) and goes to Front Panel Local operation

Clears the OVP/Reverse Connection ALARM

Stops SEQUENCE operation

Pressed to fix an entered numeric value from keypad (eg. load value)

or other selection (eg. SYSTEM reset)

4

5

6

CURSOR keys

CANCEL key

ENTER key

7

8

ON/OFF button

MENU key

Turns Load Output ON/OFF; lit GREEN when ON; unlit when OFF

Pressing enters into MENU screen or returns to MAIN screen

Pressing switches between Standby and Startup state

MAIN screen will appear after startup screen and Firmware Version screen

Type B connector, USB 2.0 compliant interface (USBTMC) for controlling the unit remotely

Pressing enters into MEMORY screen or returns to MAIN screen

Front Panel Positive and Negative busbars for connection to the Device-Under-Test

Internally connected to the Rear Panel Positive and Negative busbars

Busbar terminals used for the SFL 1000W models

9

STANDBY switch

10

11

USB connector

MEMORY key

12

LOAD terminals

13

14

Air Intake slots

Product Label

Air inlets for product cooling

Label that identifies product information (Product Series, Voltage/Current/Power, etc.)

SFL DC ELECTRONIC LOAD SERIES | 5

Rear View: Key Features (1000W Model)

12

1

2

3

4

15

10

13

9

5

6

8

14

11

7

Item

Title

Description

Connects the optional MASTER/SLAVE connection cable from Master (OUT) to Slave (IN)

Used during parallel operation only or Multi-Channel Synchronous operation

MASTER/SLAVE terminals referenced to minus load terminal

Trigger signal output

1

MASTER/SLAVE IN/OUT connectors

Used as the trigger signal when observing the load waveform in Dynamic mode with a scope or when

synchronizing with other devices

TRIG OUT referenced to Case potential

Input pins for EXTernal voltage control (Load current proportional to Control Voltage)

Control voltage range: 0V to 10V

2

3

TRIG OUT +/- pins

EXTernal Control Input (EXT-IN +/- pins)

EXT-IN terminals referenced to minus load terminal

For connecting remote sense cable

4

5

6

Remote Sense Input (SENSE +/- pins)

EXT/INT Switch

Remote Sense is enabled when the SENSE selection switch is set to EXT

SENSE terminals referenced to minus load terminal

Switch for selecting voltage sense signal

Set to EXT when using remote sense cable

Signal is used when monitoring load current waveform with oscilloscope

Analog voltage proportional to load current (dependent on Load Current Range)

Current Monitor terminals referenced to minus load terminal

Rear panel load busbars (with mounting hardware) for connection to the Device-Under-Test

Internally connected to the Front Panel Positive and Negative load terminals

Busbars with M6 (300W)/M8 (1000W) diameter hole

Current Output Monitor (IMON)

7

LOAD terminals

For connecting AC power cord between AC service and SFL DC Electronic Load

North American or European AC Input linecord available

Single-phase, 85~264VAC, 48-62Hz; 60VA max (300W models)/65VA max (1000W models)

AC Input Main Power switch; Switch depressed to I = ON, depressed to O = OFF

8

9

AC Power Inlet

AC POWER Switch

Optional interface that adds measurement function equivalent to ripple noise measurement using 100MHz

oscilloscope recommended by JEITA standard

Spiked switching noise and line frequency can be separated and measured

Variation found in measurement using oscilloscope can be avoided and measurement time can be reduced

Ripple Measurement terminals referenced to minus load terminal

Used for heated air exhaust ventilation

10

Ripple Measurement Interface

11

12

Air Outlet slots

Port for optional communication Interface

Optional Interface port

IEEE Interface with separate DIDO Digital Control Interface

DIDO Digital Control used for external control and status monitoring

Label describing Model # and Serial #

Label indicating product CE mark compliance

Label indicating product RoHS compliance

13

14

15

Serial Number Label

CE Mark label

RoHS label

6 | SFL DC ELECTRONIC LOAD SERIES

Front Panel Display: Key Features (300W/1000W Models)

9

1

2

3

8

6

5

4

7

Item

1

Title

Description

Displays detailed settings for a menu item selected on the Horizontal menu

Fix by selecting the item using Vertical FUNCTION key(s)

Vertical Menu*

2

3

4

Set Value (Voltage Range): Displays the set value of the Voltage range (H/L)

Set Value (Current Range): Displays the set value of the Current range (H/M/L)

Set Value (SlewRate): Displays the set value of the Slew Rate

Set Value (Load): Displays the set value of the load

5

6

Digits to be set are displayed in reverse contrasting colors

Set Value*

Set Value (Load Mode)

CC: Constant-Current mode

CR: Constant-Resistance mode

CV: Constant-Voltage mode

CP: Constant-Power mode

EX: External Control Mode (CC)

ST: Short Mode

7

8

9

Horizontal Menu*

Status Display

Basic setting menu of items displayed on the screen

Operating Mode, VMode, Master, OCP, OPP

Measured Value

Measured values of Voltage, Current and Power. Display order can be changed.

* Vertical menu, Horizontal menu and Set Values displayed on the screen vary according to operting mode or other settings.

The figure above is an example of the Normal operating mode.

SFL DC ELECTRONIC LOAD SERIES | 7

Features

Operating Modes / Load Modes

The SFL DC Electronic Load Series has seven different load operating modes (CC, CR, CV, CP, EXT, SHORT and CV + Climit) with four

different operating modes (Normal, Dynamic, Sequence and Sweep) that allows the user to perform a variety (up to seventeen)

different types of load tests for DC power supplies, fuel cells, solar cells, batteries and components.

Load Mode

CV

CV + Climit

CC

CR

CP

EXT

SHORT

Normal

Dynamic

Sequence*

Sweep

•

N/A

•

N/A

* Sequence Mode uses USB (or IEEE) Interface

Dynamic Overshoot/Oscillation Eliminated

Standard electronic loads may generate load current overshoot and oscillation (during some operating conditions) which can damage

connected devices.The SFL Series incorporates high-speed current feedback control to eliminate load current overshoot and oscillation

to realize a stable and predictable load waveform during turn-On or Dynamic operation.

No overshoot

Current

No turn-On overshoot

(DUT Turn-On with Load ON)

No overshoot

Current

Voltage

Dynamic Load Change

(No overshoot)

8 | SFL DC ELECTRONIC LOAD SERIES

Features

Low Voltage Operation / Rising Load Current Without Turn-On Delay

Some electronic loads may have discontinuity and not allow load current to flow below a minimum operating voltage. Due

to low voltage operating optimization the SFL DC Electronic Load Series is able to emulate a resistor where the load current

flows and changes linearly from 0V thereby eliminating current cut-off at low operating voltage. This also eliminates any

soft-start delay (where load current does not flow until a minimum operating voltage is achieved) and allows low voltage

devices to be properly tested.

Current

Voltage

Low Voltage Operation

with Start-Up from 0V

Parallel Operation

Parallel operation (via rear panel connection) is achieved by connecting units of the same voltage rating in parallel, connecting

a parallel cable from unit-to-unit and setting one unit as the Master unit and all other units as Slave units. Up to nine Slave

units can be connected in a system allowing load systems of up to 10kW to be configured.

Load system control is performed by the Master unit where total load system current or power can be set up and displayed

on the Master unit front panel.

Master

Slave

(Up to 9)

SFL DC ELECTRONIC LOAD SERIES | 9

Features

Multi-Channel Synchronous Operation

Multi-channel synchronous operation (with triggering) allows multiple DC electronic loads to be connected to separate devices by

using the same parallel cable connection from unit-to-unit. Synchronized load ON/OFF and Dynamic operation are featured in a

Master-Slave configuration with up to ten units total (up to 10kW total).

Master

CH-1

Slave

CH-2

CH-3

SMPS

Slave

(Up to 9)

Multiple Device-Under-Test Setup

Protection Functions and Alarms

Single Device-Under-Test Setup (Multi-Output)

Several Protection functions and Alarms are featured including Current Limit (OCP), Power Limit (OPP), Over-Temperature protection

(OTP), Over-Voltage protection (OVP) Alarm and Reverse Connection Alarm.

The Current Limit (OCP) has an adjustable limit threshold where the load can be set to either maintain operation at the limit threshold

or shut down where the Power Limit (OPP) is set to 100% of rated power and can maintain load operation at the limit threshold or

shut down.

Protection

OCP

OPP

OVP ⁽¹⁾

Fixed

N/A

OTP

Fixed

N/A

Reverse Connection ⁽¹⁾

Fixed

Threshold Limit Adjust

Operation at Threshold Limit

Load Shutdown

•

(110% rating)

•

N/A

•

N/A

Load Current Cutoff

Audible Beep

•

Display Alarm

(1) Remove fault condition from load or load may be damaged

10 | SFL DC ELECTRONIC LOAD SERIES

Technical Speciﬁcations - SFL DC Electronic Load Series

■ LOAD CHARACTERISTICS

Ratings

120-60-300

500-12-300

120-180-1K

120

500-36-1K

500

V

A

120

60

500

12

Voltage

180

36

Current

W

300

1000

Power, (*1)

mΩ

18 or less

100 or less

6 or less

33.3 or less

Internal Minimum Resistance, (*2)

1.08V (60A) / 0.54V (30A)

1.2V (12A) / 0.6V (6A)

1.08V (180A) / 0.54V (90A

1.2V (36A) / 0.6V (18A)

---

Load Range, (*2) (*3)

/ 0.22V (12A)

/ 0.28V (2.8A)

/ 0.22V (36A)

/ 0.28V (8.4A)

I

12A

60A

180A

36A

300W

1000W

Load Range curves

V

1.2 V (12 A) / 0.6 V (6 A) / 0.28 V (2.8 A)

1.08 V (60 A)

/

0.54 V (30 A) / 0.22 V (12 A)

3V

500V

V

1V

120V

V

1.08 V (180 A) / 0.54 V (90 A) / 0.22V (36 A)

1V

120V

1.2 V (36 A) / 0.6 V (18 A) / 0.28 V (8.4 A)

3V

500V

Operating Mode

120-60-300

500-12-300

120-180-1K

500-36-1K

Normal Mode (Constant Load)

---

Constant Current (CC) mode: Constant current will ﬂow even if the load terminal voltage is changed

Constant Resistance (CR) mode: Current proportional to load terminal voltage will ﬂow (resistive load)

Constant Voltage (CV) mode: Load terminal voltage remains constant even when load current varies

Constant Power (CP) mode: Current will ﬂow such that load power remains constant

Load Modes

External Control (EXT) mode: Load current proportional to voltage of external control input terminal will ﬂow

Short (SHORT) mode: Creates short circuit between load terminals -up to rated current ﬂows or 100% of

Current Limit set value

---

Dynamic Mode - Frequency (Fluctuating Load)

Frequency: Allows setting waveform Period and Duty Cycle and repeated switching between two load

---

Type

settings. slew Rate is set for each step individually.

See User's Manual for more information

---

Load Modes

CC / CR / CV/ CP

1us < Period < 2ms (1us resolution) / 20ms < Period < 200ms (10us resolution) /

200ms < Period < 2s (100us resolution) / 2s < Period < 10s (1ms resolution)

Period Setting/Resolution

%

---

Duty Cycle Setting

Operation

0% to 100%

Single (single waveform) or repeat (repeating waveform); TRIGGER OUT feature available

Dynamic Mode - Time (Fluctuating Load)

Time: Allows setting Time by Step and sequential/repeated switching of up to 16 types of loads conditions.

---

Type

See User's Manual for more information

Load Modes

Execution Time

CC / CR / CV/ CP

1us < T < 20ms (1us resolution) / 20ms < T < 200ms (10us resolution) / 200ms < T < 2s (100us resolution) /

2s < T < 20s (1ms resolution) / 20s < T < 60s (10ms resolution)

Repeat; TRIGGER OUT feature available

Operation

Sweep Mode

Sweep R (V-I Characteristic Test), Sweep C (Overcurrent Characteristic Test), Sweep P (Overpower

Characteristic Test)

Current and voltage values are measured while changing the load in a step-wise manner (in CR mode).

Resistance value can be ﬁnely changed between steps. Measurement values are shown as a graph on front

panel display.

---

Type

Sweep R (V-I Characteristic Test)

Current and voltage values are measured while changing the load in a step-wise manner (in CC mode). Upper/

Lower limts of current value can be set (with PASS/FAIL decision function). Measurement values are shown as a

graph on front panel display.

Power and voltage values are measured while changing the load in a step-wise manner (in CP mode).

Upper/Lower limts of power value can be set (with PASS/FAIL decision function). Measurement values shown

as a graph on front panel display.

---

Sweep C (Overcurrent Characteristic Test)

Sweep P (Overpower Characteristic Test)

Sequence Operation (Remote Digital Mode Only - IEEE or USB)

---

Type

Load Modes

Allows user to program a load waveform proﬁle

CC, CR, CV, CP

1 - 1024

1ms - 10minutes (common to all steps)

1ms (1ms to 100ms) / 100ms (100ms - 10minutes)

1 to 65535 (ﬁnite) or ∞

IEEE or USB Interface only; Waveform termination via IEEE, USB or CANCEL key of front panel display

Triangle, Sine or Arc

Number of Steps

Step Time

Step Time Resolution

Sequence Repetitions

Control Method

Waveforms available

12 | SFL DC ELECTRONIC LOAD SERIES

Technical Speciﬁcations - SFL DC Electronic Load Series

■ LOAD CHARACTERISTICS

Load Modes

120-60-300

500-12-300

120-180-1K

500-36-1K

Constant Current (CC) Mode

Current

Range

---

H

M

L

H

M

L

A

mA

0 - 60A

0 - 6A

0 - 0.6A

5mA

0.5mA

0.1mA

0 - 12A

0 - 1.2A

0 - 0.12A

1mA

0.1mA

0.02mA

0 - 180A

0 - 18A

0 - 1.8A

15mA

1.5mA

0.3mA

0 - 36A

0 - 3.6A

0 - 0.36A

3mA

0.3mA

0.06mA

Current Setting Range

Current Setting Resolution

+/- (0.2% of setpoint

+25mA+Vin/50KΩ)

+/- (0.2% of setpoint

+12mA+Vin/50KΩ)

+/- (0.2% of setpoint

+6mA+Vin/50KΩ)

+/- (0.2% of setpoint

+10mA+Vin/750KΩ)

+/- (0.2% of setpoint

+3mA+Vin/750KΩ)

+/- (0.2% of setpoint

+2mA+Vin/750KΩ)

+/- (0.2% of setpoint

+75mA+Vin/16.67KΩ)

+/- (0.2% of setpoint

+36mA+Vin/16.67KΩ)

+/- (0.2% of setpoint

+18mA+Vin/16.67KΩ)

+/- (0.2% of setpoint

+30mA+Vin/250KΩ)

+/- (0.2% of setpoint

+9mA+Vin/250KΩ)

+/- (0.2% of setpoint

+6mA+Vin/250KΩ)

H

M

L

---

Current Setting Accuracy, (*4)

H

M

L

A/us

0.2 - 20A/us

0.02 - 2A/us

0.005 - 0.5A/us

0.01 - 1A/us

0.001 - 0.1A/us

0.00025 - 0.025A/us

0.3 - 30A/us

0.03 - 3A/us

0.0075 - 0.75A/us

0.03 - 3A/us

0.003 - 0.3A/us

0.00075 - 0.075A/us

Slew Rate (Current Range), (*5)

Constant Resistance (CR) Mode

Current

Range

---

S

L (20V)

L (85V)

L (20V)

L (85V)

40.000S - 0.0005S

(0.025Ω - 200Ω)

4.000S - 0.0005S

(0.25Ω - 2kΩ)

3.3333S - 0.0004S

(0.3Ω - 2.5kΩ)

120.00S - 0.01S

(0.0083Ω - 66.667Ω)

12.000S - 0.001S

10.0000S - 0.001S

(0.1Ω - 833.33Ω)

1.0000S - 0.0001S

(1Ω - 8333.3Ω)

H

Resistance Setting Range

0.3333S - 0.00004S

M

S

(3Ω - 25kΩ)

(0.0833Ω - 666.67Ω)

H

M

---

uS (or mS)

---

4mS

400uS

333uS

33uS

12mS

1.2mS

1mS

0.1mS

Resistance Setting Resolution

H (120V)

H (500V)

H (120V)

H (500V)

13.333S - 0.0016S

1.111S - 0.0001S

40.000S - 0.005S

3.3333S - 0.0004S

H

S

(0.075Ω - 600Ω)

(0.9Ω - 7kΩ)

(0.025Ω - 200Ω)

(0.3Ω - 2.3333kΩ)

Resistance Setting Range

1.333S - 0.00016S

(0.75Ω - 6kΩ)

0.11111S - 0.00001S

(9Ω - 70kΩ)

4.0000S - 0.0005S

(0.25Ω - 2kΩ)

0.33330S - 0.00004S

(3Ω - 23.333Ω)

M

H

M

us/mS

uS/mS

1.33mS

133uS

111uS

11uS

3.99mS

399uS

333uS

33uS

Resistance Setting Resolution

+/- (0.5% of Vin/Set

Resistance +0.2% of FS +

Vin/250kΩ)

---

Resistance + 0.2% of FS + Resistance + 0.2% of FS + Resistance +0.2% of FS +

Setting Accuracy, (*4) (*6) (*7)

Vin/50kΩ)

Vin/750kΩ)

Vin/16.67kΩ)

Constant Voltage (CV) Mode

H

L

H

L

---

V

mV

---

0 - 120V

0 - 20V

10mV

2mV

0 - 500V

0 - 85V

50mV

0 - 120V

0 - 20V

10mV

2mV

0 - 500V

0 - 85V

50mV

Voltage Setting Range

Voltage Setting Resolution

10mV

+/- (0.1% of setting +0.1% of FS)

Fast / Slow

Voltage Setting Accuracy, (*4)

Response Time

Constant Power (CP) Mode

H

M

H

W

mW

0 - 300W

0 - 40W

50mW

5mW

0 - 300W

0 - 40W

50mW

5mW

0 - 1000W

0 - 120W

167mW

0 - 1000W

0 - 120W

167mW

Power Setting Range

Power Setting Resolution

M

16.7mW

+/- (0.6% of setting + 1.4% +/- (0.6% of setting + 1.4% +/- (0.6% of setting + 1.4% +/- (0.6% of setting + 1.4%

---

Power Setting Accuracy, (*4)(*7)

External Control (EXT) Mode

Current Setting Range

of FS + (Vin*Vin)/50kΩ)

of FS + (Vin*Vin)/750kΩ) of FS + (Vin*Vin)/16.67kΩ) of FS + (Vin*Vin)/250kΩ)

H

M

H

A

mA

0 - 60A

0 - 6A

5mA

0 - 12A

0 - 1.2A

1mA

0 - 180A

0 - 18A

15mA

0 - 36A

0 - 3.6A

3mA

Current Setting Resolution

M

0.5mA

0.1mA

1.5mA

0.3mA

+/- ( 0.2% of setting + 0.5% +/- ( 0.2% of setting + 0.5% +/- ( 0.2% of setting + 0.5% +/- ( 0.2% of setting + 0.5%

H

---

Current Setting Accuracy, (*4), (*8)

Slew Rate (Current Range), (*5)

of FS + (Vin/50kΩ))

0.2 - 20A/us

of FS + (Vin/750kΩ))

0.01 - 1A/us

of FS + (Vin/16.67kΩ) )

0.3 - 30A/us

of FS + (Vin/250kΩ))

0.03 - 3A/us

H

M

A/us

V

0.02 - 2A/us

0.001 - 0.1A/us

0.03 - 3A/us

0.003 - 0.3A/us

Control Voltage

0 - 10V

Short (SHORT) Mode

H

A

60A

12A

180A

36A

Short Mode Current (max value), (*9)

Short Mode Current (max value w/

Current Limit Set)

110% of Current Limit Value (when Current Limit is set)

SFL DC ELECTRONIC LOAD SERIES | 13

Technical Speciﬁcations - SFL DC Electronic Load Series

■ MEASUREMENT CHARACTERISTICS (FP Display)

DC Voltage Measurement (FP Display)

120-60-300

---

0V to 120V

0V to 20V

10mV

500-12-300

---

0V to 500V

0V to 85V

10mV

120-180-1K

---

0V - 120V

0V to 20V

10mV

500-36-1K

---

0V - 500V

0V to 85V

10mV

---

V

mV

---

ms

H

L

Voltage Measurement Range, (*10)

H

L

Voltage Measurement Resolution

1mV

---

+/- (0.05% of reading + 0.5% of FS)

approximately 100ms

Voltage Measurement Accuracy, (*4)

Measurement Time, (*11)

DC Current Measurement (FP Display)

120-60-300

0 - 60A

500-12-300

120-180-1K

0 - 180A

0 - 18A

500-36-1K

0 - 36A

0 - 3.6A

0 - 0.36A

1.5mA

H

A

mA

---

ms

0 - 12A

0 - 1.2A

0 - 0.12A

0.5mA

M

L

0 - 6A

0 - 0.6A

0.5mA

0.1mA

Current Measurement Range, (*12)

0 - 1.8A

1.5mA

0.3mA

H

M

L

0.1mA

0.3mA

Current Measurement Resolution

H

M

L

+/- (0.2% of reading + 0.2% of FS)

+/- (0.2% of reading + 0.5% of FS)

approximately 100ms

Current Measurement Accuracy, (*4)

Measurement Time, (*11)

---

Power Measurement (FP Display)

Power Measurement Method

Measurement Time, (*11)

120-60-300

500-12-300

120-180-1K

500-36-1K

---

ms

by calculation (Measured voltage x Measured current)

approximately 200ms

■ PROTECTIVE FUNCTIONS (Protection and Alarms)

Current Limit Protection (OCP/Climit)

120-60-300

500-12-300

120-180-1K

---

500-36-1K

---

Current

---

Range

H, M, L

A

mA

---

0 - 60A

0 - 12A

0 - 180A

0 - 36A

Current Setting Range

Current Setting Resolution

Load Modes

H

M

L

0.1A

10mA

1mA

---

CC, CR, CV, CP, EXT, SHORT, Dynamic Mode (Frequency, Time), Sweep (R, C, P)

Load turns Oﬀ and load current is interrupted or load current limited to 110% of the Current Limit set value;

user-selectable; Default = Max Value of H range

System setting: Enable = Load OFF for Current Limit condition,

---

Disable = Load current limited for Current Limit condition

Current Limit Operation

Front panel will display "Over Current" during Current Limit operation along with audible beep

When load current is limited, if the current set value drops below the protection value, the unit will return to

its original operating state.

Power Limit Protection (OPP)

120-60-300

500-12-300

120-180-1K

500-36-1K

---

W

---

300W

1000W

Rated Power

Load turns Oﬀ and load current is interrupted when rated power is exceeded or load power limited to 110%

of the set value; user-selectable; Default = Enabled

System setting: Enable = Load OFF, Disable = Power Limit function

Front panel will display "Over Power" during limit operation along with audible beep

When power limited, if the power falls below the rated power of power range, the unit will return to its original

operating state

Power Limit Operation

Overtemperature Protection (OTP)

120-60-300

500-12-300

120-180-1K

500-36-1K

Load turns Oﬀ and load current is interrupted

Front panel will display "Over Temperature" during overtemperature condition along with audible beep

---

Overtemperature Operation

Overvoltage Alarm (OVP)

120-60-300

500-12-300

Load turns Oﬀ and load current is interrupted

120-180-1K

500-36-1K

Front panel will display "Over voltage" during overvoltage condition along with audible beep

Remove the overvoltage condition and press CANCEL key to clear the alarm.

Overvoltage Operation

Reverse Connection Alarm

120-60-300

500-12-300

120-180-1K

500-36-1K

A

-0.6A

-0.15A

-0.6A

-0.15A

Reverse Connection Detection Current, (*13)

Load turns Oﬀ

Reverse voltage of -0.6V is required for Alarm detection

---

Reverse Connection Operation

Front panel will display "Reverse connection" during reverse connection condition along with audible beep

Remove the reverse connection condition and press CANCEL key to clear the alarm.

14 | SFL DC ELECTRONIC LOAD SERIES

Technical Speciﬁcations - SFL DC Electronic Load Series

■ OTHER FUNCTIONS

Remote Sense (SENSE)

120-60-300

500-12-300

120-180-1K

500-36-1K

Measures the voltage across any device connected to the load

--

Function

(using external sense cables connected from SENSE +/- to device +/-).

By rear panel switch (SENSE EXT/INT switch). Set to INT when Remote Sense is disabled; Set to EXT

when Remote Sense is enabled. +/- sense cabling required from SENSE +/- terminals to test device.

One-touch terminal block (rear panel); Remote Sense signal is referenced to load terminal potential;

See User's Manual for more information

Selection

Connection

Trigger OUT (TRIG OUT)

Function

120-60-300

500-12-300

120-180-1K

500-36-1K

Used as a trigger signal when viewing the waveform of Dynamic mode operation

or when synchronizing with other devices

--

0V/+4V, pulse

Output

Pulse; Step 1: +4V (typical), Pulsewidth = Execution time of Step 1;

After start of Step 2: 0V (typical); See User's Manual for waveform proﬁle.

One-touch terminal block (rear panel); TRIGGER OUT signal is referenced to case potential;

See User's Manual for more information.

Output Voltage

--

Connection

Current Monitor (IMON)

120-60-300

500-12-300

120-180-1K

500-36-1K

Output signal Used to monitor the load current waveform using an oscilloscope.

Output impedance = 50ohms

--

Function

BNC connector (rear panel); IMON signal is referenced to load terminal potential (common side of IMON terminal (metal

--

Connection

shell of BNC) and Negative terminal of load are internally connected).

Optional Current Monitor cable available; terminate cable with 1MegΩ

Connection Cable

Current

--

Range

H

M

L

A

5V / 60A

0.2V / 0.6A

5V / 12A

0.2V / 0.12A

5V / 180A

0.2V / 1.8A

5V / 36A

0.2V / 0.36A

Monitor Measurement Range

H

M

L

---

Ω

+/- (1% of Conv. Volt. + 1% of FS)

+/- (5% of Conv. Volt. + 3% of FS)

50Ω

Current Measurement Accuracy,

(*14)

--

Output Impedance, (*15)

VMode

Function

120-60-300

500-12-300

120-180-1K

500-36-1K

--

Automatically changes the load mode in“Voltage Rising”or“Voltage Falling”during operation

Normal mode (constant load)

OFF: Turns oﬀ the function, Load Oﬀ (H): Load Oﬀ during“Voltage Rising”, Load Oﬀ (L): Load Oﬀ during“Voltage Falling”

CR(H): Change to CR Mode when“Voltage Rising”, CR(L): Change to CR Mode when“Voltage Falling”

CV(H): Change to CV Mode when“Voltage Rising”, CV(L): Change to CV Mode when“Voltage Falling”

CP(H): Change to CP Mode when“Voltage Rising”, CP(L): Change to CP Mode when“Voltage Falling”

Operating Mode

--

Set using MENU screen (Default = OFF)

Selection

Setting Range

0.0000 - 120.000

0.0000 - 500.000

0.0000 - 120.000

0.0000 - 500.000

■ FRONT/REAR PANEL

Front/Rear Panel

Control Functions

3.5" color LCD display

Function keys

120-60-300

500-12-300

120-180-1K

500-36-1K

Front

---

Displays Vertical menu, Horizontal menu, Status, Set value(s) and Measured value(s).

Allows user to select items from Horizontal menu (5 keys) and Vertical menu (5 keys).

Allows user to enter a numeric value (clockwise = increase value, counter-clockwise = decrease value), Stopping

knob rotation sets the value.

Front

---

Modify knob

UP/DOWN keys: increase/decrease numeric value; UP key = increase value, DOWN key = decrease value;

Modiﬁed value set right after pressing key

LEFT/RIGHT keys: set decimal place; LEFT key = move decimal place left, RIGHT key = move decimal place right

Front

---

CURSOR keys

Returns to previous operation. Cancels Remote control and returns to Local operation (IEEE, USB, SEQUENCE

operation). Clears the Alarm.

Changes Set value(s)

Sets the LOAD ON (key is illuminated and load current ﬂows)

or OFF (key is not illuminated and stops the ﬂow of load current)

Enters into Menu screen/Returns to Main screen.

Front

---

CANCEL key

ENTER key

ON/OFF key

MENU key

Switches between Standby and Startup states.

Main screen will appear after Startup screen and Version Display screen.

STANDBY switch

Front

Rear

---

MEMORY key

AC ON/OFF switch

Enters into Memory screen/Returns to Main screen.

Main AC Power switch. “I”is the ON position. “O”is the OFF position.

SFL DC ELECTRONIC LOAD SERIES | 15

Technical Speciﬁcations - SFL DC Electronic Load Series

■ FRONT/REAR PANEL

Front/Rear Panel

Display Menus

Sets basic parameters (Load Mode, Current Limit, Measure, Measure Rate, Master/Slave setting (parallel operation),

VMODE setting and VMODE set value). Commonly used for each Load Operating mode.

R Interface menu added to Menu screen when installed.

---

MENU screen

MAIN screen

Main screen and System screen can be accessed from Menu screen.

Sets the load operating mode (Normal, Dynamic (Time), Dynamic (Frequency), SWEEP R, SWEEP C, SWEEP P).

R Interface menu added to Menu screen when installed.

Memory screen and Menu screen can be accessed from Main screen.

Up to 8 settings can be stored and recalled by number. Settings stored/recalled are operation Mode, Load Mode,

Voltage Range, Current Range, Load Set Value and Slew Rate.

SStore operation can be performed if LOAD ON or OFF.

---

MEMORY screen

Recall operation will change the mode to LOAD OFF, if the mode is LOAD ON. After changing to LOAD OFF, the recall

function will be performed.

Main screen can be accessed from the Memory screen.

Sets product functions (IEEE address, DIDO control, Range (DIDO) control, PrwOn (Save Settings), LCD Brightness,

Screen Color/Language, Firmware Rev, OCP setting, OPP setting, Optional Interface selection, Reset (factory defaults).

Main screen can be accessed from the System screen.

---

SYSTEM screen

Version Memory screen

Embedded in System screen settings. Displays P/N, S/N, ﬁrmware revisions, options installed and calibration date.

Front Panel Button Indications

Key is illuminated GREEN and load current ﬂows when ON. Key is not illuminated and stops the ﬂow of load current

when OFF.

---

ON/OFF key

Front Panel Display Indications

Display reads Over Power during overpower condition.

---

Power Limit (OPP)

See Protective Functions (Power Limit Protection) for more information.

Display reads Over Temperature during a overtemperature condition.

See Protective Functions (Overtemperature Protection) for more information.

Display reads Over voltage during a overvoltage condition.

Over-Temperature (OTP)

Over-Voltage Alarm (OVP)

Reverse Connection Alarm

See Protective Functions (Overvoltage Alarm) for more information.

Display reads Reverse connection during a reverse connection condition.

See Protective Functions (Reverse Connection Alarm) for more information.

■ SYSTEM CONFIGURATIONS

Parallel Operation

120-60-300

500-12-300

120-180-1K

500-36-1K

Used to create higher power electronic load. Up to 10 units can be connected in parallel (including the Master unit)

for a 10kW system (using Master/Slave Parallel cable(s)).

Main unit is Master and all other units are Slave units. Slave units shall have the same voltage rating as the Master unit;

300W and 1kW models can be paralleled. Load ON/OFF and Slew Rate set by Master unit (for all units).

Master unit can display total calculated current and total calculated power of parallel conﬁguration. Set resolution

power changes depending on the number of units in parallel.

---

Parallel Operation

Rear panel load terminals shall only be used for load power connections.

Current Ranges: H range, M range.

---

+/- 3% of Full-Scale (FS) - typical

+/- 7% of Full-Scale (FS) - typical

If Alarm occurs (Master or Slave unit), 'FP display of Master unit reads" Booster Alarm" and all units in parallel

conﬁguration will be switched OFF.

If the Alarm is triggered by a Slave unit, the Alarm must be cleared in both Master and Slave units before normal

operation can occur.

Current Setting Accuracy

Alarm Setting

---

Multi-Channel Synchronization

120-60-300

500-12-300

120-180-1K

500-36-1K

Used to synchronize separate loads for ON/OFF control and dynamic mode operation.

Two to ten units can be connected in a multi-channel synchronous operating scheme (one Master unit and at least

one Slave unit) using Master/Slave Parallel cable(s).

--

Function

Main unit is Master and all other units are Slave units. Slave units can have a diﬀerent voltage rating than the Master

unit. Load ON/OFF set by Master unit (for all units).

Rear panel load terminals shall only be used for load power connections.

If Alarm occurs (Master or Slave unit), FP display of that unit reads "Booster Alarm" and unit with the Alarm will be

switched OFF.

--

Alarm Setting

If Alarm occurs in both Master and Slave units, the Alarm only needs to be cleared in the unit with the Alarm before

normal operation can occur for that unit.

■ REMOTE ANALOG SIGNALS AND CONTROLS

DIDO Interface (offered with IEEE option)

120-60-300

500-12-300

120-180-1K

500-36-1K

Optional Interface provided w/ IEEE Interface that is used for external control and monitor (Load ON/OFF control/

status, Voltage/Current range setting/status, Alarm Input/Clear and Status, +12VDC power, SWEEP Pass/Fail and User-

Deﬁned Output.

--

Function

Enabled/Disabled via System Screen

16 | SFL DC ELECTRONIC LOAD SERIES

Technical Speciﬁcations - SFL DC Electronic Load Series

■

REMOTE ANALOG SIGNALS AND CONTROLS (Continued)

DIDO Interface (offered with IEEE option)

Control Input (Edge Detected)

120-60-300

500-12-300

120-180-1K

500-36-1K

---

Load ON/OFF, (*16) (*17)

Optocoupler LED input: L = Optocoupler LED OFF, H = Optocoupler LED ON

Optocoupler LED input; CUR-RANGE1 (pins 3-4), CUR-RANGE2 (pins 5-6): Edge-Detected

---

Current Range, (*16) (*17)

LL: Maintain same status, LH: Current Range = L, HL: Current Range = M, HH: Current Range = H

Default = Disabled, Use System screen to Enable/Disable (Enables/Disables both Current range and Voltage range)

Optocoupler LED input: L = L range, H = H range; Default = Disabled, Use System screen to Enable/Disable (Enables/

Disables both Current range and Voltage range)

---

Voltage Range, (*16) (*17)

---

External Alarm, (*16) (*17)

Protection/Alarm Clear, (*16) (*17)

Status Output

Optocoupler LED input: L = Alarm OFF, H = Alarm ON

Optocoupler LED input: L = Alarm Not Cleared, H = Alarm Cleared

---

Load ON/OFF, (*18)

Optocoupler open-collector output: Open = Load OFF, Closed = Load ON

Optocoupler open-collector output (2 bit)

Current Range, (*18)

STATUS1 (CUR-RANGE STATUS1) - L range = Closed, M range = Open, H range = Closed

STATUS2 (CUR-RANGE STATUS2) - L range = Open, M range = Closed, H range = Closed

---

Voltage Range, (*18)

Optocoupler open-collector output: Open = L range, Closed = H range

Optocoupler open-collector output: Open = No Alarm Clear, Closed = Alarm Cleared

Optocoupler open-collector output: Open = user-deﬁned, Closed = user-deﬁned; Controlled from IEEE or USB Interface

Optocoupler open-collector output: Open = PASS SWEEP C/SWEEP P, Closed = FAIL SWEEP C/SWEEP P

Protection/Alarm Clear, (*18)

User deﬁned output, (*18)

SWEEP Decision, (*18)

Power Supply Output

---

DC Power Supply for DIDO Control/Status signals

Can be used to drive optocoupler LED input, relay input (to drive optocoupler LED)

or open-collector output (external series resistor required)

+12VDC Power Supply

Limited to < 100mA, Referenced to case potential

■ AC INPUT POWER

Power Input

Voltage

Frequency

Power

120-60-300

500-12-300

120-180-1K

500-36-1K

VAC

Hz

VA

85 - 264VAC (Overvoltage Category II)

50Hz +/- 2Hz or 60Hz +/- 2Hz

< 60VA

< 65VA

■ ENVIRONMENTAL CONDITIONS

Environmental Conditions

Operating Environment

Operating Temperature/Humidity

Storage Temperature

120-60-300

Indoor use

500-12-300

120-180-1K

---

0ºC to +40ºC (+32ºF to +104ºF), 5% to 85% RH (absolute humidity 1 to 25 g/m3, no condensation)

-10ºC to +50ºC (+14ºF to +122ºF), 5% to 95% RH (absolute humidity 1 to 29 g/m3, no condensation)

Operating: up to 2000m (~6562ft)

Altitude

■ MECHANICAL SPECS

Mechanical Specs

Cooling

Weight

120-60-300

500-12-300

120-180-1K

500-36-1K

---

kg (lbs)

Forced air cooling by internal fans with air ﬂow from front to rear (no side ventilation), zero-stackable

approx. 6.5kg (14.3lbs)

approx. 13kg (28.6lbs)

Width: 215mm (8.46 inches), Height: 128.6mm (5.06

inches), Depth: 420mm (16.54 inches)

refer to Outline Drawing (300W model)

Benchtop or rack-mount

Benchtop using mounting feet. Rack-mount kit

available for 300W model (single unit or two unit). See

Outline Drawing(s)

Width: 430mm (16.93 inches), Height: 128.6mm (5.06 inches),

mm

---

Depth: 450mm (17.72 inches)

Dimensions (W x H x D)

(inches)

refer to Outline Drawing (1000W model)

Benchtop or rack-mount

Benchtop using mounting feet. Rack-mount kit available for

1000W model (single unit). See Outline Drawing(s)

---

Mounting

---

standard IEC inlet

AC Input connector

DC Output connections

Binding post (Load current < 20A); Internally

connected to rear panel load terminals

Terminals with M6 hardware; internally connected to

front panel load terminals

Terminals with M8 hardware; internally connected to rear panel

Front Panel

load terminals

Terminals with M8 hardware; internally connected to front

panel load terminals

Rear Panel

Front Panel

---

USB Type B (built-in standard)

MASTER/SLAVE connectors: RJ45 type, use Master/Slave Parallel cable

TRIG-OUT connector: One-touch terminal block for "+" and "-" connections,

AWG#16-AWG#26 (single wire) - See User's Manual

Interface connections

EXT-IN connector: One-touch terminal block for "+" and "-" connections,

AWG#16-AWG#26 (single wire) - See User's Manual

Rear Panel

---

SENSE connector: One-touch terminal block for "+" and "-" connections,

AWG#16-AWG#26 (single wire) - See User's Manual

IMON port: BNC-type, use IMON cable

SFL DC ELECTRONIC LOAD SERIES | 17

Technical Speciﬁcations - SFL DC Electronic Load Series

■ INTERFACES

Interfaces

120-60-300

500-12-300

120-180-1K

500-36-1K

Parallel/Multi-Synchronization connection (from unit-to-unit); RJ45 connector (rear panel), cable length ~ 1m

---

Master/Slave

(3.3ft), one cable per unit; referenced to negative load terminal

TRIGGER-OUT connection (for Dynamic operation viewing and device synchronization); One-touch terminal

block for "+" and "-" connections (rear panel), referenced to case potential.

EXTERNAL Mode programming connections; One-touch terminal block for "+" and "-" connections (rear panel),

referenced to load potential.

Remote Sense (for measuring test device voltage); One-touch terminal block for "+" and "-" connections

(rear panel), referenced to load potential.

Current Monitor connection (to monitor load current waveform using scope); BNC-type (rear panel),

common side of IMON terminal (metal shell of BNC) and Negative (-) terminal of load are internally connected).

USB2.0 compliant, USBTMC; Type B USB connector (front panel), cable length < 4m, referenced to Chassis potential

IEEE 488.1 compliant, Address 1-30 (Default address = 1); IEEE connector with metal backshell (rear panel),

cable length < 4m; referenced to Chassis potential

TRIGGER-OUT

EXT-IN

SENSE

---

IMON

USB (built-in standard interface)

IEEE (optional interface)

Optocoupler-based Control/Monitor Interface (provided with IEEE Interface); Two-row 16 position (female-socket)

rectangular IDC connector (rear panel), referenced to case potential when using DIDO +12VDC Power Supply.

Ripple Measurement connection (for measuring ripple and noise), BNC-type connector (rear panel) with cover,

common side of BNC (metal shell) and negative (-) terminal of load are internally connected.

---

DIDO (built-in standard w/ IEEE Interface)

R (optional interface)

■ SAFETY

Safety

Applicable Standards

Pollution Degree

120-60-300

Complies with EN61010-1:2010, 3rd Edition

Pollution Degree II

500-12-300

120-180-1K

500-36-1K

---

AC Input: Hazardous Primary

Load Output (front/rear panel), Master/Slave Interface, TRIG-OUT Interface, EXT-IN Interface, SENSE Interface,

USB Interface, IEEE Interface, DIDO Interface, R Interface: Hazardous Secondary

---

Interface Classiﬁcation

---

Withstand Voltage

Insulation Resistance

AC Input-to-Output terminals/Chassis: 1500VAC for 60 seconds

> 30Megohms between AC Input and Output terminals/Chassis) @ 500VDC

■ EMC

EMC

120-60-300

500-12-300

120-180-1K

500-36-1K

---

Applicable Standards, (*19)

Electrostatic Discharge (ESD)

Fast Transient Burst

Complies with EN61326-1: 2013 (Class A)

EN 61000-4-2:2009 - 2kV/4kV (Contact Discharge), 2kV/4kV/8kV (Air Discharge)

EN 61000-4-4:2012 - 1kV for I/O Signal and Control Ports / 2kV for AC Power Port

EN 61000-4-5:2006 - 0.5kV/1kV line-to-line and 0.5kV/1kV/2kV line-to-earth (AC Power Port)

EN 61000-4-11:2004 - AC Power Port

Lightning Surge Immunity

Voltage Dips and Short Term Interruptions

Power Frequency, Magnetic Field

Conducted Immunity

Radiated Immunity

Voltage Fluctuations and Flicker

Conducted Emissions

EN 61000-4-8:2010 - 30A/m

EN 61000-4-6:2009 - 3V (for I/O Signal and Control Ports / AC Power Port)

EN 61000-4-3:2006 + A1:2008 + A2: 2010 - 1V/m, 3V/m, 10V/m

EN 61000-3-3:2013

EN 55011 (Group 1, Class A): 0.15MHz - 30MHz

EN 55011 (Group 1, Class A): 30MHz - 1GHz

Radiated Emissions

■ WARRANTY

Warranty

120-60-300

500-12-300

120-180-1K

500-36-1K

yrs

2yrs

■ OTHER MEASUREMENT CHARACTERISTICS

Ripple Measurement Module Option (FP Display)

Common for All Models

DC Voltage Measurement

V

+/- 6V

0.1mV

+/- 60V

1.0mV

-60.000V to -5.600V

+5.600V to +60.000V

+/- 500V

10.omV

-500.00V to -56.00V

+56.00V to +500.00V

Voltage Measurement Range

Voltage Measurement Resolution

Voltage Measurement Autorange

mV

V

-6.0000V to +6.0000V

---

V

+/- (0.025% of reading + 0.025% of FS)

+/- 500V

Voltage Measurement Accuracy, (*4)

Maximum Applied Voltage

ms

approximately 100ms

Measurement Time, (*11)

Ripple / Noise Voltage Measurement

Maximum Input Voltage

V

+/- 3V

mV

---

300mV

0.1mV

3000mV

1.0mV

R/N Voltage Measurement Range

R/N Voltage Measurement Resolution

R/N Voltage Measurement Accuracy, (*20)

THRU

+/- (2% of reading + 1% of FS)

50Hz to 100MHz

---

50Hz to 2kHz

5kHz to 100MHz

Filter

LPF, (*21)

HPF, (*22)

---

ms

50Hz to 20MHz

0.0% to 50.0% (per 0.5%)

approximately 350ms

20 MHz Bandwidth Limit

Ripple Ratio, (*23) (*24)

Measurement Time, (*11)

Power Measurement

Measurement method, (*25)

Measurement Time, (*11)

---

ms

Input voltage x Load current

approximately 200ms

18 | SFL DC ELECTRONIC LOAD SERIES

Technical Speciﬁcations - SFL DC Electronic Load Series

(*1) This parameter will vary depending on unit internal temperature and unit operating time.

(*2) Measured at the rear panel load terminals. This is not a set value in CR mode.

(*3) The minimum operating voltage varies depending on the current value.

(*4) At an ambient temperature of +23ºC +/- 5ºC (+73.4ºF +/- 9ºF).

(*5) At rear panel load terminal. Can ONLY be set in CC mode and EXT mode (cannot be set in CR, CP or SHORT mode). In CV mode, this is the reponse time setting.

(*6) Vin is valid starting from 1/10V and greater for the selected range. FS is the Full-Scale current of the Current H range.

(*7) FS is the Full-Scale Power of the Current H range.

(*8) Accuracy of External Control Mode is only when the control voltage input is 10V.

(*9) Short-circuit is created across the load terminals.

(*10) Voltage measurement range changes in accordance with the Voltage setting range selected.

(*11) This speciﬁcation does not apply immediately after the Voltage range has changed.

(*12) Current measurement range changes in accordance with the Current setting range selected.

(*13) Reverse connection voltage of -0.6V is required for alarm detection.

(*14) Conv. Volt. indicates converted voltage value of "Measurement Current Value x (Current Monitor FS / Rated Current)".

(*15) With a 1MegΩ terminating resistor.

(*16) H condition indicates that optocoupler LED is ON; L condition indicates that optocoupler LED is OFF.

(*17) Resistance of 2.4kΩ in series with LED. Applying 5V-12V results in H condition. Ensure that LED input current is less than 4.5mA.

(*18) Open-collector output. Maximum applied voltage = 30V, Maximum collector current = 10mA

(*19) Operation in an environment with a strong electro-magnetic ﬁeld may cause measured value and load setting to be diﬀerent.

(*20) In ripple ration of 0% to 10%, In the range of 10kHz to 10MHz, At an ambient temperature of +23ºC +/- 5ºC (+73.4ºF +/- 9ºF).

(*21) LPF = Low Pass Filter

(*22) HPF = High Pass Filter

(*23) In the range of 10kHz to 10MHz.

(*24) Ripple ratio is the ratio of the switching ripple period originating from switching period and time with ripple noise. Measured values of ripple voltage and noise

voltage becomes equal at 0.0% setting.

(*25) Measurement results are shown as absolute values.

NOTES:

Setpoint refers to set value, reading refers to reading and FS refers to the maximum value in each range.

Speciﬁcations indicate values after warm-up time of 30 minutes. Vin is load input voltage.

Values indicated with accuracy in speciﬁcations are guaranteed values (guaranteed for warranty period).

Values without accuracy are nominal values or representative values (indicated as typ.).

SFL DC ELECTRONIC LOAD SERIES | 19

Outline Drawing, SFL 300W (120V or 500V Models)

20 | SFL DC ELECTRONIC LOAD SERIES

Outline Drawing, SFL 1000W (120V or 500V Models)

SFL DC ELECTRONIC LOAD SERIES | 21

Outline Drawing, SFL 300W, EIA Rack-Mount Kit

22 | SFL DC ELECTRONIC LOAD SERIES

Outline Drawing, SFL 1000W, EIA Rack-Mount Kit

SFL DC ELECTRONIC LOAD SERIES | 23

Outline Drawing, SFL 300W, JIS Rack-Mount Kit

24 | SFL DC ELECTRONIC LOAD SERIES

Outline Drawing, SFL 1000W, JIS Rack-Mount Kit

SFL DC ELECTRONIC LOAD SERIES | 25


型号：	SFL500-12-300-IEEE
厂家：	TDK ELECTRONICS
描述：	电子负载电子
文件：	总26页 (文件大小：4306K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

SFL500-12-300-IEEE [TDK]

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