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Serie ALx

DC 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.

Build-Time: 6-8 Weeks

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ALx Series image
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ALx Series Digital Control Image

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
  • 26-pin configurable external user I/O, including a high-speed analog input
  • Front and rear USB and rear RS-485 or optional TCP/IP Ethernet, PROFINET, EtherNet/IP, EtherCAT, CANopen, or ModbusTCP

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.

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

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
ALx Series Digital Master-Slaving 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 MagnaWEB Software 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.

Front Panel - Standard

Front Panel - Standard

Front Panel - Blank Panel (+BP) Option

Front Panel - Blank Panel (+BP) Option
1
START: Enables the DC input bus
STOP: Disables the DC input bus
2
Voltage measurement display
3
Current measurement display
4
4-line character display featuring a menu system, operating status and modes, product messages with diagnostic codes, resistance measurement display, and power measurement display
5
Control power switch, energizes the control circuits without engaging DC bus
6
LED indicator that the DC input is enabled
7
Full control (host) front panel USB port
8
Clean air intake, with integrated fans
9
Aluminum digital encoder knob for programming set-points
10
LED indicator of the MagnaLOAD's present regulation state, which can include: constant voltage (CV), constant current (CC), constant power (CP), or constant resistance (CR)
11
Selector buttons to choose which set-point the digital encoder knob and digital keypad buttons will modify
12
MENU: Enters the menu system on the 4-line display
BACK: Moves back one level in the menu
ENTER: Selects the highlighted menu item
CLEAR: Removes the product from a faulted state
LOCK: Locks the front panel, with password protection available

Model Ordering Guide

Model Ordering Guide

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 Max Power Max Voltage Max Current Package Type Min Voltage Max Resistance
ALx1.25-200-3001.25 kW200 Vdc300 AdcRack-mount2.5 Vdc70.40 Ω
ALx1.25-500-1251.25 kW500 Vdc125 AdcRack-mount6.0 Vdc448.00 Ω
ALx1.25-1000-37.51.25 kW1000 Vdc37.5 AdcRack-mount7.5 Vdc1792.00 Ω
ALx2.5-200-6002.5 kW200 Vdc600 AdcRack-mount2.5 Vdc70.40 Ω
ALx2.5-500-2502.5 kW500 Vdc250 AdcRack-mount6.0 Vdc448.00 Ω
ALx2.5-1000-752.5 kW1000 Vdc75 AdcRack-mount7.5 Vdc1792.00 Ω
ALx5-200-12005 kW200 Vdc1200 AdcFloor-standing2.5 Vdc35.20 Ω
ALx5-500-5005 kW500 Vdc500 AdcFloor-standing6.0 Vdc224.00 Ω
ALx5-1000-1505 kW1000 Vdc150 AdcFloor-standing7.5 Vdc896.00 Ω
ALx7.5-200-18007.5 kW200 Vdc1800 AdcFloor-standing2.5 Vdc23.47 Ω
ALx7.5-500-7507.5 kW500 Vdc750 AdcFloor-standing6.0 Vdc149.33 Ω
ALx7.5-1000-2257.5 kW1000 Vdc225 AdcFloor-standing7.5 Vdc597.33 Ω
ALx10-200-240010 kW200 Vdc2400 AdcFloor-standing2.5 Vdc17.60 Ω
ALx10-500-100010 kW500 Vdc1000 AdcFloor-standing6.0 Vdc112.00 Ω
ALx10-1000-30010 kW1000 Vdc300 AdcFloor-standing7.5 Vdc448.00 Ω
ALx12.5-200-300012.5 kW200 Vdc3000 AdcFloor-standing2.5 Vdc14.08 Ω
ALx12.5-500-125012.5 kW500 Vdc1250 AdcFloor-standing6.0 Vdc89.60 Ω
ALx12.5-1000-37512.5 kW1000 Vdc375 AdcFloor-standing7.5 Vdc358.40 Ω
ALx15-200-360015 kW200 Vdc3600 AdcFloor-standing2.5 Vdc11.73 Ω
ALx15-500-150015 kW500 Vdc1500 AdcFloor-standing6.0 Vdc74.67 Ω
ALx15-1000-45015 kW1000 Vdc450 AdcFloor-standing7.5 Vdc298.67 Ω
ALx17.5-200-420017.5 kW200 Vdc4200 AdcFloor-standing2.5 Vdc10.06 Ω
ALx17.5-500-175017.5 kW500 Vdc1750 AdcFloor-standing6.0 Vdc64.00 Ω
ALx17.5-1000-52517.5 kW1000 Vdc525 AdcFloor-standing7.5 Vdc256.00 Ω
ALx20-200-480020 kW200 Vdc4800 AdcFloor-standing2.5 Vdc8.80 Ω
ALx20-500-200020 kW500 Vdc2000 AdcFloor-standing6.0 Vdc56.00 Ω
ALx20-1000-60020 kW1000 Vdc600 AdcFloor-standing7.5 Vdc224.00 Ω

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
100-240 Vac (UI: Universal Input); Available on 1.25 to 17.5 kW Models
200-240 Vac (UI2: Universal Input 2); Available on 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: 200 ms, 10% to 90% full scale resistance rating
Trip Settings Range
Programmable protection limits used to trigger a soft fault shutdown in the event the limit is exceeded by the DC source
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
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, TÜV SÜD Certificate U8 123461 0002
Tested to UL 61010-1:2012/R:2019-07 and CSA C22.2 No. 61010:2012/A1:2018-11
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

Options and Accessories

The following are options and accessories developed specifically for Magna-Power's ALx Series

Downloads

The following downloads are for the Serie ALx:

Documentation

ALx Series User Manual [EN] [HTML] [Recommended]
ALx Series Datasheet [1.4.0] [EN] [PDF]
ALx Series Datasheet [1.4.0] [ZH] [PDF]
ALx Series User Manual [0.007] [EN] [PDF]

Drivers

Software

MagnaCTRL Software [0.010-53664] [MSI]