SFL500-12-300 [TDK]
电子负载;型号: | SFL500-12-300 |
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 |
SFL Series
Programmable DC Electronic Loads
Half-Rack 3U 300W / Full-Rack 3U 1000W
• 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
N/A
N/A
N/A
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
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
Master
CH-1
Slave
Slave
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
How To Order
SFL DC Electronic Load Series
How to Order - Identification / Accessories
300W Models
SFL
120
-
60
-
-
300
-
-
IEEE
IEEE
-
-
R
R
Load
Voltage
Load
Current
Load
Power
Series Name
(0-120V)
(0-60A)
(0-300W)
1000W Models
SFL
500
-
36
1K
Load
Voltage
Load
Current
Load
Power
Series Name
(0-500V)
(0-36A)
(0-1000W)
Programming Interface Options
P/N
P/N
IEEE Interface (488.1 & SCPI compliant)
IEEE
---
Test Interface Options
P/N
P/N
R (Ripple Measurement) Interface
---
R
Models (300W)
Model
Load Voltage (V)
Load Current (A)
Load Power (W)
SFL 120-60-300
SFL 500-12-300
120
500
60
12
300
300
Models (1000W)
Model
Load Voltage (V)
Load Current (A)
Load Power (W)
SFL 120-180-1K
SFL 500-36-1K
120
500
180
36
1000
1000
Accessories
Included or Sold Separately
Master/Slave Connection Cable
1
P/N: Contact Factory
P/N: SFL-CBL-IMON
-----
Cable used for Parallel Operation of Multiple Units
Current Monitor (IMON) Cable
Cable used for IMON analog signal measurement
2
Sold separately
Sold separately
Sold separately
EIA Rack-Mount Kit
3 Rack-Mount Kit for SFL-300
(Single/Dual)/SFL-1000 (Single)
P/N: SFL-KIT-RM-EIA
P/N: SFL-RM-BP
Blank Panel, EIA Rack-Mount
Blank Panel for Single Unit Rack-Mounting (SFL-300)
4
Test Data Sheet - Standard w/Calibration Certificate
5 Test Data Sheet - Standard with Calibration Certificate
and Traceability
P/N: SFL-TR-STD-CAL/TR
Sold separately
SFL DC ELECTRONIC LOAD SERIES | 11
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
300
1000
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
I
I
I
12A
60A
180A
36A
300W
300W
1000W
1000W
Load Range curves
V
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
A
A
mA
mA
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
A/us
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)
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
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
+/- (0.5% of Vin/Set
+/- (0.5% of Vin/Set
+/- (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
V
mV
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
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
W
mW
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
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
A
mA
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
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
H
A
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
V
mV
mV
---
ms
H
L
Voltage Measurement Range, (*10)
H
L
Voltage Measurement Resolution
1mV
1mV
1mV
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
A
A
mA
mA
mA
---
---
---
ms
0 - 12A
0 - 1.2A
0 - 0.12A
0.5mA
M
L
0 - 6A
0 - 0.6A
0.5mA
0.1mA
0.1mA
Current Measurement Range, (*12)
0 - 1.8A
1.5mA
0.3mA
0.3mA
H
M
L
0.1mA
0.1mA
0.3mA
0.3mA
Current Measurement Resolution
H
M
L
+/- (0.2% of reading + 0.2% of FS)
+/- (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
A
mA
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
A
A
5V / 60A
5V / 60A
0.2V / 0.6A
5V / 12A
5V / 12A
0.2V / 0.12A
5V / 180A
5V / 180A
0.2V / 1.8A
5V / 36A
5V / 36A
0.2V / 0.36A
Monitor Measurement Range
H
M
L
---
---
---
Ω
+/- (1% of Conv. Volt. + 1% of FS)
+/- (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
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
Front
Front
Front
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
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
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
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
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