MagnaLOAD Logo

ALx系列

直流电子负载

Key Facts

  • 27 models
  • 1.25 kW to 20 kW power levels
  • Up to 1000 Vdc input voltage
  • Up to 4800 Adc input current
  • MagnaLINK™ Distributed DSP Architecture
  • 16-bit resolution
  • Digital master-slaving with aggregation
  • SCPI programming API
  • UL/CSA listed, CE Mark
  • Designed and manufactured in the USA
High Current Capability, UL/CSA Listed, and Many Control Modes Available

Wide Full Power Operating Range Linear MOSFET Electronic Load

The ALx Series MagnaLOAD utilizes conventional linear MOSFET-based dissipative elements, allowing the series to achieve a very wide voltage-current operating range within the model’s maximum power rating. Using the same heat management innovations developed for Magna-Power’s high density programmable DC power supplies, the ALx Series’ conservative cooling ensures long product life with continuous full power operation in environments up to 50°C ambient operating temperature. The ALx Series provides 16-bit precision in voltage, current, resistance, and power control modes, along with a shunt regulator mode, to act as a "smart" braking resistor to protect devices on the DC bus.

MagnaLINK™ Distributed Digital Control

Magna-Power’s MagnaLINK™ technology provides distributed Texas Instrument DSP control across power processing stages inside the MagnaLOAD DC electronic load. This technology follows a significant internal development cycle from Magna-Power to provide a unified digital control platform across its electronic loads and power supplies, featuring fully digital control loops, adjustable control gains, programmable slew rates, digital master-slaving, and many new advanced control technologies.

All ARx Series MagnaLOADs come with the following interfaces:

  • Front panel knob, keypad, and menu system
  • 25-pin configurable external user I/O, including a high-speed analog input
  • Front and rear USB and rear RS-485 or optional Ethernet and IEEE-4888 GPIB

When in standby or diagnostic fault, the DC input bus is disconnected via a switching device.

Finally, with a dedicated +5V interlock input pin and included +5V reference on all models, external emergency stop systems can be easily integrated using an external contact.

ALx Series Digital Control Image

Five Operating Modes

To accommodate a variety of DC sources, all ARx Series MagnaLOADs come with many configurable control modes, including:

  • Voltage Mode
  • Current Mode
  • Power Mode
  • Resistance Mode
  • Shunt Regulator Mode

Preference for DC regulation is given to the parameter in the selected mode within the programmed set-points. Using the MagnaLOAD's set-points and trip settings, the product can configured to either trip with a fault when a limit is exceeded or to cross-over into a different regulation state.

Shunt Regulator Mode turns the MagnaLOAD into a high-speed smart braking resistor, engaging the DC input only when a specified voltage and exceeded by a user-defined percentage, while limiting the shunt current to a programmed set-point.

ALx Series Operating Modes Image

Digital Master-Slaving: Expandibility Without Compromise

All MagnaLOADs come standard with a MagnaLINK™ Input and a MagnaLINK™ Output port, which provides plug and play digital master-slaving. Simply connect the master's MagnaLINK™ Output to the slave's MagnaLINK™ Input and, using the MagnaWEB software, the products will automatically configure themselves for master-slave operation as a higher-power unit based on the populated ports. Buffered digital MagnaLINK™ connections means many MagnaLOADs can be daisy-chained in master-slave operation. Master-slave MagnaLOAD units will aggregate measurements to one display panel.

The internal MagnaLINK™ protocol was developed with expandability at the forefront. When configured for master-slave operation, the master controller takes control of all the slave's digital "targets." With this digital master-slaving strategy, it is completely transparent whether the unit is operating as a stand-alone product or in master-slave.

ALx Series Digital Master-Slaving Image

Configurable External User I/O

Beyond the front panel and computer controls, all MagnaLOADs come standard with a 25-pin D-Sub connector designated as the External User I/O. This connector provides:

  • 8 Digital Outputs
  • 4 Digital Inputs
  • 4 Analog Outputs
  • 4 Analog Inputs

All the analog-digital I/O ports are configurable, allowing the user to select which parameters they want to control and monitor. This configurable I/O scheme reduces complexity, eases PLC integrationand allows control parameters from various interfaces simultaneously.

The MagnaLOAD's configurable analog inputs provide 0-10V programming from PLCs and external D/A converters.

ALx Series External User I/O Image

MagnaWEB Software Interface

Magna-Power's next generation software interface, MagnaWEB, provides intuitive and user-friendly web-browser based controls for programming and measurement read-back of the MagnaLOAD's activity. Virtually all of the MagnaLOAD's available functions can be controlled and monitored from the MagnaWEB software over any of product's installed communication interfaces.

MagnaWEB uses a server-client software model to provide access to the MagnaLOAD from nearly any device and operating system. Install and run the MagnaWEB software locally on Windows then, using a web browser, access the server connected to the MagnaLOAD from a variety of devices including other desktops, tablets or smart-phones.

ALx Series MagnaWEB Software Image

There are 27 different models in the ALx Series spanning power levels: 1.25 kW, 2.5 kW, 5 kW, 7.5 kW, 10 kW, 12.5 kW, 15 kW, 17.5 kW, 20 kW.

Use the following ordering guide and models chart to define the best model for your application.

ALx Series Ordering Guide

ALx Series Models

There are 27 different models in the ALx Series spanning power levels: 1.25 kW, 2.5 kW, 5 kW, 7.5 kW, 10 kW, 12.5 kW, 15 kW, 17.5 kW, 20 kW. To determine the appropriate model:

  1. Select the desired Max Voltage (Vdc) from the left-most column.
  2. Select the desired Max Current (Adc) from the same row that contains your desired Max Voltage.
  3. Construct your model number according to the model ordering guide.
Model Maximum Power Maximum Voltage Maximum Current Package Type Minimum Voltage
ALx1.25-200-300 1.25 kW 200 Vdc 300 Adc Rack-mount 2.5 Vdc
ALx1.25-500-125 1.25 kW 500 Vdc 125 Adc Rack-mount 6.0 Vdc
ALx1.25-1000-37.5 1.25 kW 1000 Vdc 37.5 Adc Rack-mount 7.5 Vdc
ALx2.5-200-600 2.5 kW 200 Vdc 600 Adc Rack-mount 2.5 Vdc
ALx2.5-500-250 2.5 kW 500 Vdc 250 Adc Rack-mount 6.0 Vdc
ALx2.5-1000-75 2.5 kW 1000 Vdc 75 Adc Rack-mount 7.5 Vdc
ALx5-200-1200 5 kW 200 Vdc 1200 Adc Floor-standing 2.5 Vdc
ALx5-500-500 5 kW 500 Vdc 500 Adc Floor-standing 6.0 Vdc
ALx5-1000-150 5 kW 1000 Vdc 150 Adc Floor-standing 7.5 Vdc
ALx7.5-200-1800 7.5 kW 200 Vdc 1800 Adc Floor-standing 2.5 Vdc
ALx7.5-500-750 7.5 kW 500 Vdc 750 Adc Floor-standing 6.0 Vdc
ALx7.5-1000-225 7.5 kW 1000 Vdc 225 Adc Floor-standing 7.5 Vdc
ALx10-200-2400 10 kW 200 Vdc 2400 Adc Floor-standing 2.5 Vdc
ALx10-500-1000 10 kW 500 Vdc 1000 Adc Floor-standing 6.0 Vdc
ALx10-1000-300 10 kW 1000 Vdc 300 Adc Floor-standing 7.5 Vdc
ALx12.5-200-3000 12.5 kW 200 Vdc 3000 Adc Floor-standing 2.5 Vdc
ALx12.5-500-1250 12.5 kW 500 Vdc 1250 Adc Floor-standing 6.0 Vdc
ALx12.5-1000-375 12.5 kW 1000 Vdc 375 Adc Floor-standing 7.5 Vdc
ALx15-200-3600 15 kW 200 Vdc 3600 Adc Floor-standing 2.5 Vdc
ALx15-500-1500 15 kW 500 Vdc 1500 Adc Floor-standing 6.0 Vdc
ALx15-1000-450 15 kW 1000 Vdc 450 Adc Floor-standing 7.5 Vdc
ALx17.5-200-4200 17.5 kW 200 Vdc 4200 Adc Floor-standing 2.5 Vdc
ALx17.5-500-1750 17.5 kW 500 Vdc 1750 Adc Floor-standing 6.0 Vdc
ALx17.5-1000-525 17.5 kW 1000 Vdc 525 Adc Floor-standing 7.5 Vdc
ALx20-200-4800 20 kW 200 Vdc 4800 Adc Floor-standing 2.5 Vdc
ALx20-500-2000 20 kW 500 Vdc 2000 Adc Floor-standing 6.0 Vdc
ALx20-1000-600 20 kW 1000 Vdc 600 Adc Floor-standing 7.5 Vdc

Specifications

The following specifications are subject to change without notice. Unless otherwise noted, all specifications measured at the product's maximum ratings.

AC Input Specifications
Specification Value
AC Input Voltage
1Φ, 2-wire + ground
85 to 265 Vac (UI: Universal Input); Available on 1.25 and 2.5 kW Models
120 Vac (120SP: operating range 108 to 132 Vac); Available on 5 kW to 17.5 kW Models
208 Vac (208SP: operating range 187 to 229 Vac); Available on 5 kW to 20 kW Models
240 Vac (240SP: operating range 216 to 264 Vac); Available on 5 kW to 20 kW Models
AC Input Frequency 50-60 Hz
AC Input Isolation ±1500 Vac, maximum input voltage to ground
Programming Interface Specifications
Specification Value
Front Panel Programming Aluminum rotary knob with encoder, keypad, or up-down arrow for single bit control
Computer Interfaces
Standard
USB Host (Front): Type B
USB Host (Rear): Type B
RS485 (Rear): RJ-45
MagnaLINK™: RJ-25 x 2
Computer Interfaces LXI TCP/IP Ethernet (Rear): RJ-45
GPIB (Rear): IEEE-488
External User I/O Port
Analog and Digital Programming
25-pin D-sub DB-25, female
Referenced to Earth ground; isolated from the DC input
See User Manual for pin layout
Programming Specifications
Specification Value
Resolution
All Modes
16-bit, 0.0015%
Accuracy
Programming and Measurement
Voltage: ±0.1% of full scale voltage rating
Current: ±0.2% of full scale current rating
Power: ±0.3% of full scale power rating
Resistance: ±0.3% of full scale resistance rating
Rise/Fall Time
Maximum
Voltage Mode: 100 ms, 10% to 90% full scale voltage rating
Current Mode: 2 ms, 10% to 90% full scale current rating
Power Mode: 100 ms, 10% to 90% full scale power rating
Resistance Mode: 40 ms, 10% to 90% full scale resistance rating
Trip Settings Range Over Voltage: 10% to 110% of full scale voltage rating
Under Voltage: 0% to 110% of full scale voltage rating
Over Current: 10% to 110% of full scale current rating
Over Power: 10% to 110% of full scale power rating
External User I/O Specifications
Specification Value
Digital I/O Digital Input Voltage: 5V
Digital Input Impedance: 10 kΩ
Digital Monitoring Voltage: 5V, 32 mA capacity
Digital Reference Voltage: 5V, 20 mA capacity
Analog I/O Analog Sampling Rate: 2 kHz
Analog Programming Voltage: 0-10 V
Analog Programming Resolution: 12-bit, 0.025%
Analog Monitoring Voltage: 0-10 V, 3 mA capacity
Analog Monitoring Impedance: 0.005 Ω
Analog Monitoring Accuracy: 0.05% of full scale
Analog Reference Voltage: 10 V, 20 mA capacity
Physical Specifications
Specification Value
Racking Standard
1.25 kW and 2.5 kW Models Only
EIA-310
Rear Support Rails
6.75 kW Models Only
Included
Size and Weight
1.25 kW Models
3U
5.25” H x 19” W x 24” D (13.34 x 48.26 x 60.96 cm)
40 lbs (18.1 kg)
Size and Weight
2.5 kW Models
3U
5.25” H x 19” W x 24” D (13.34 x 48.26 x 60.96 cm)
65 lbs (29.5 kg)
Size and Weight
5 kW Models
12U Cabinet
30.7” H x 24” W x 31.5” D (78.0 x 61.0 x 80.0 cm)
255 lbs (115.7 kg)
Size and Weight
7.5 kW Models
12U Cabinet
30.7” H x 24” W x 31.5” D (78.0 x 61.0 x 80.0 cm)
320 lbs (145.2 kg)
Size and Weight
10 kW Models
12U Cabinet
30.7” H x 24” W x 31.5” D (78.0 x 61.0 x 80.0 cm)
385 lbs (174.6 kg)
Size and Weight
12.5 kW Models
24U Cabinet
58.25” H x 24” W x 31.5” D (148.0 x 61.0 x 80.0 cm)
500 lbs (226.8 kg)
Size and Weight
15 kW Models
24U Cabinet
58.25” H x 24” W x 31.5” D (148.0 x 61.0 x 80.0 cm)
565 lbs (256.3 kg)
Size and Weight
17.5 kW Models
24U Cabinet
58.25” H x 24” W x 31.5” D (148.0 x 61.0 x 80.0 cm)
630 lbs (285.8 kg)
Size and Weight
20 kW Models
24U Cabinet
58.25” H x 24” W x 31.5” D (148.0 x 61.0 x 80.0 cm)
695 lbs (315.3 kg)
Environmental Specifications
Specification Value
Ambient Operating Temperature 0°C to 50°C
Storage Temperature -25°C to +85°C
Humidity Relative humidity up to 95% non-condensing
Air Flow Front air inlet, rear exhaust
Regulatory Specifications
Specification Value
EMC Complies with 2014/30/EU (EMC Directive)
CISPR 22 / EN 55022 Class A
Safety NRTL Listed, Intertek Control Number 5014353
Conforms to UL61010-1:2012 Ed.3+R:29Apr2016
Certified to CSA C22.2#61010-1-12:2012 Ed.3
Complies with EN61010-1 and 2014/35/EU (Low Voltage Directive)
CE Mark Yes
RoHS Compliant Yes

Dimensional Diagrams

The following are vectorized diagrams for the ALx Series. Refer to the Downloads section for downloadable drawings.

Front Panel
1.25 kW and 2.5 kW Models
Rear Panel
1.25 kW and 2.5 kW Models
Side Panel
1.25 kW and 2.5 kW Models
Front Panel
5 kW to 20 kW Models
Rear Panel
5 kW to 20 kW Models

Integrated Options

The following are the standard integrated options available for the ALx Series. Refer to the Model Ordering Guide for details on how the option code is specified in the full model number.

Software Add-ons

The ALx Series comes standard with control software and drivers available under Downloads. The following are additional software add-ons available.

Accessories

The following is a list of available external accessories for the ALx Series.

Downloads

The following downloads are for the SL Series

Documentation

ALx Series Datasheet [1.2.1] [EN] [PDF]
ALx Series Datasheet [1.2.1] [ZH] [PDF]

Drawings

Software