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Magna-Power SL Series
Programmable DC Power Supply

Magna-Power SL Series <br> Programmable DC Power Supply
Magna-Power SL Series
Programmable DC Power Supply

Magna-Power SL Series
The SL Series builds on nearly 40 years of power supply innovation at Magna-Power, designed from the ground up to meet the highly reliable power dense demands of ATE system integrators through Magna-Power's signature current-fed power processing topology. Utilizing state-of-the-art semiconductors and innovative internally designed and manufactured heat sinks, the SL Series offers industry-leading 1U (1.75” height) programmable power levels with models at 1.5 kW, 2.6 kW, 4 kW, 6 kW, 8 kW and 10 kW, while still maintaining an ambient operating temperature rating up to 50°C. 3-4 Weeks Lead Time, ARO. UL& CSA listed, CE Marked. Made in the USA. Typically 3-4 Weeks Lead Time, ARO -- if not in stock.

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Product Details

Fully Programmable DC Power


The SL Series features programmable voltage, current, and protection settings along with high accuracy measurements. The SL Series functions and features are accessible and configurable from a variety of control methods, including:

  • Front panel interface with stepless knobs
  • 37-pin isolated analog-digital user I/O
  • RS232 Computer interface with software and drivers

Various additional programming interfaces are available, such as LXI TCP/IP Ethernet (+LXI), IEEE-488 GPIB (+GPIB), Edgeport USB Accessory (+USB), RS485 Accessory (+RS485).

Designed for Safety


SL Series power supplies have extensive diagnostic functions, including:

  • AC Phase Loss
  • Excessive Thermal Conditions
  • Over Voltage Trip (Programmable)
  • Over Current Trip (Programmable)
  • Cleared Fuse
  • Excessive Program Line Voltage
  • Interlock Fault

When in standby or diagnostic fault, the AC mains are mechanically disconnected by an embedded AC contactor, providing confidence that the unit is only processing power when desired.

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.

Extensive Programming Support


All SL Series MagnaDC power supplies come with a dedicated National Instruments LabVIEW™ driver, Interchangeable Virtual Instrument (IVI) driver, and support for a wide range of Standard Commands for Programmable Instrumentation (SCPI). These programming interfaces support full control, measurement, and monitoring of the MagnaLOAD. All of the MagnaLOAD's available communication interfaces are supported by these drivers and command sets, including: RS232, LXI TCP/IP Ethernet, IEEE-488 GPIB, USB or RS485.

Showcased in the following basic code examples, SCPI commands provide the simplest form of communication by using plain ASCII text and parameters sent over a basic socket connection. Over 50 commands are provided, with detailed documentation in the SL Series User Manual.

Finally, Magna-Power's RIS Panel software is provided allowing for a virtual control panel controlling the power supply via any of the available communication interfaces

import visa rm = visa.ResourceManager() magna_power = rm.open_resource(USB::0x0403::0x6015::1201-2358::INSTR) magna_power.write('*IDN?') magna_power.read() magna_power.write('VOLT 1000') magna_power.write('CURR 20') magna_power.write('INP:START')
magna_power = visa('ni','USB::0x0403::0x6015::1201-2358::INSTR'); fopen(magna_power) fprintf(magna-power,'*IDN?') idn = fscanf(magna_power) fprintf(magna-power,'VOLT 1000') fprintf(magna-power,'CURR 20') fprintf(magna-power,'INP:START')
string resourceString = "USB::0x0403::0x6015::1201-2358::INSTR"; mbSession = (MessageBasedSession)ResourceManager.GetLocalManager().Open(resourceString);string idn; mbSession.Timeout = 3000; idn = mbSession.Query("*IDN?"); mbSession.Write("VOLT 1000"); mbSession.Write("CURR 20"); mbSession.Write("INP:START");
Current-Fed Topology

Current-Fed Topology: Robust Power Conversion


All MagnaDC programmable DC power supplies utilize high-frequency IGBT-based power processing in current-fed topology. This topology adds an additional stage over the conventional voltage-fed topology for enhanced control and system protection, ensuring that even under a fault condition, the power supply will self-protect. Due to the self-protecting characteristics of this topology, the possibility of fast rising current spikes and magnetic core saturation is eliminated.

In addition to its robust topology, key performance characteristics of MagnaDC programmable DC power supplies include:

  • High-accuracy voltage and current programming accuracy
  • Class-leading line and load regulation performance
  • High 3F AC input power factor with in-rush limiting circuitry
  • Computer and user I/O isolated from the power supply output

Front Panel - Standard


SL Series Standard Front Panel

Front Panel - C Version


SL Series Blank Front Panel
A
POWER: Indicates power output
STANDBY: Indicates control power only
B
Function Keys
MENU: Selects function
ITEM: Selects item within function
V/I DIS: Displays voltage-current settings
TRIP DIS: Displays OVT and OCT setting
CLEAR: Clears settings or resets fault
ENTER: Select item
C
Meters display output voltage, output current, voltage set point, current set point, over voltage trip and over current trip
D
Power switch energizes control circuits without engaging main power
E
Engages and disengages main power via integrated mechanical contactor
F
Stepless rotary knob to set voltage-current
G
Diagnostic Alarms
LOC: Interlock
PGL: External input voltage beyond limits
THL: Over-temperature condition
OVT: Over-voltage protection has tripped
OCT: Over-current protection has tripped
H
REM SEN: Remote sense enabled
INT CTL: Front panel start/stop/clear enabled
EXT CTL: External start/stop/clear enabled
ROTARY: Front panel rotary knob input
EXT PGM: External analog voltage-current control
REMOTE: Computer control
USA Flag

Designed and Manufactured in the USA, Available Worldwide


For complete control of quality, MagnaDC programmable DC power supplies are designed and manufactured at Magna-Power's vertically integrated USA manufacturing facility in Flemington, New Jersey. Heat-sinks and chassis are machined from aluminum. All sheet metal is fabricated and powder coated in-house. Magnetics are wound-to-order from validated designs based on a model's voltage and current. An automated surface-mount production line places components on printed circuit boards for control, driver, auxiliary power, and display circuits. And finally after assembly, products undergo comprehensive test and calibration, followed by an extended burn-in period.

 

There are 127 different models in the SL Series spanning power levels: 1.5 kW, 2.6 kW, 4 kW, 6 kW, 8 kW, 10 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.
SL Series Ordering Guide
 1.5 kW2.6 kW4 kW6 kW8 kW10 kW  
Max Voltage (Vdc)Max Current (Adc)Ripple (mVrms)Efficiency
5250N/AN/AN/AN/AN/A5084%
10150250N/AN/AN/AN/A4089%
1693162250N/AN/AN/A3589%
2075130200250N/AN/A4090%
2560104160240N/AN/A4091%
324681125186250N/A4091%
4037651001502002504091%
503052801201602005092%
602543661001331666093%
80183250751001256093%
10015264060801006093%
12512203248648010093%
1609162536506012093%
2007.5132030405012594%
250610.41624324013094%
30058.613.22026.433.316094%
37546.910.41621.326.517094%
4003.76.51015202518095%
50035.2812162022095%
6002.54.36.41013.316.525095%
8001.83.257.51012.530095%
10001.52.64681035095%
12501.223.24.86.4837595%
150011.72.645.36.640095%
        
AC Input Voltage (Vac)Input Current Per Phase (Aac)  
UI (85-265 Vac, 1F)21 - 7N/AN/AN/AN/AN/A  
UI2 (187-265 Vac, 1F)N/A16 - 12N/AN/AN/AN/A  
208/240 Vac, 3F61116243239  
380/415 Vac, 3F5811161922  
440/480 Vac, 3F469141719  

Technical Product Data

POWER
PROGRAMMING
PHYSICAL
ENVIRONMENTAL
AC INPUT SPECIFICATIONS
1F AC Input Voltage
1F, 2-wire + ground
85 to 265 Vac (UI: Universal input; 1.5 kW Models)
187 to 265 Vac (UI2: Universal input 2; 2.6 kW Models)
3F AC Input Voltage
3F, 3-wire + ground
208 Vac (operating range 187 to 229 Vac)
240 Vac (operating range 216 to 264 Vac)
380 Vac (operating range 342 to 440 Vac)
415 Vac (operating range 373 to 456 Vac)
440 Vac (operating range 396 to 484 Vac)
480 Vac (operating range 432 to 528 Vac)
Input Frequency
50 Hz to 400 Hz
Power Factor
0.99 at maximum power for models with 1F AC input; Active-PFC
> 0.82 at maximum power for models with 3F AC input
AC Input Isolation
±2500 Vac, maximum input voltage to ground
DC OUTPUT SPECIFICATIONS
Voltage Ripple
Model specific. Refer to chart of available models.
Line Regulation 
Voltage mode: ± 0.004% of full scale
Current mode: ± 0.02% of full scale
Load Regulation 
Voltage mode: ± 0.01% of full scale
Current mode: ± 0.04% of full scale
Stability
± 0.10% for 8 hrs. after 30 min. warm-up
Efficiency
84% to 95%
Model specific. Refer to chart of available models.
Maximum Slew Rate
Standard Models
100 ms for an output voltage change from 0 to 63%
100 ms for an output current change from 0 to 63%
Maximum Slew Rate
Models with High Slew Rate Output (+HS) Option
4 ms for an output voltage change from 0 to 63%
8 ms for an output current change from 0 to 63%
Bandwidth
Standard Models
3 Hz with remote analog voltage programming
2 Hz with remote analog current programming
Bandwidth
Models with High Slew Rate Output (+HS) Option
60 Hz with remote analog voltage programming
45 Hz with remote analog current programming
DC Output Isolation
Models Rated =1000 Vdc
±1000 Vdc, maximum output voltage to ground
DC Output Isolation
Models Rated >1000 Vdc
±1500 Vdc, maximum output voltage to ground

SL Series Dimensional Drawings

Front Panel
SL Series Front Panel Diagram
Top Panel
Rear Side
SL Series Top Panel Diagram
Rear Panel
SL Series Rear Panel Diagram
Side Panel
SL Series Side Panel Diagram
Communications Interface
LXI TCP/IP Ethernet Option (+LXI)
SL Series Communications Interface Diagram
Communications Interface
IEEE-488 GPIB Option (+GPIB)
SL Series Communications Interface Diagram

High Slew Rate Output

 
+HS
The high slew rate output option is a hardware and control modification that replaces the standard output stage with one of low capacitance film and/or high RMS current rated aluminum electrolytic capacitors. This options provides higher bandwidth with faster output rise and fall times.

IEEE-488 GPIB

 
+GPIB
This option provides an integrated IEEE-488 GPIB communications port, allowing the product to be fully controlled and monitored using supported commands, as well as adding some additional interface specific commands.

LXI TCP/IP Ethernet

 
+LXI
This option provides an integrated TCP/IP Ethernet communications port, allowing the product to be fully controlled and monitored using supported commands, as well as adding some additional interface specific commands.

Photovoltaic Power Profile Emulation

 
+PPPE
This software interface for Magna-Power programmable DC power supplies utilizes EN50530 modeling to generate and transfer non-linear solar array profiles as a function of temperature and sunlight for the power supply to emulate.

Ruggedized

 
+RUG
This option provides and internal ruggedization, which has been independently tested to comply with select MIL-STD-810G shock and vibration specifications.

Accessories Available

NameItemDescriptionDocs
USB Edgeport Converter25302Industrial Plug and Play USB to RS232 ConverterN/A
RS485 Converter24716Industrial RS232 to Addressable RS485 ConverterN/A
UID47: Universal Interface Device22026Master-slave interface device for load sharing. Includes interface device and (2) D-Sub 37 cables.PDF
CAB1: Cabinet and Integration 11788312U Cabinet (32” H x 24” W x 31.5” D) with casters, fans, and product integrationN/A
CAB2: Cabinet and Integration 21788324U Cabinet (51.5” H x 24” W x 31.5” D) with casters, fans, and product integrationN/A
CAB3: Cabinet and Integration 31788330U Cabinet (67” H x 24” W x 31.5” D) with casters, fans, and product integrationN/A
CAB4: Cabinet and Integration 41788336U Cabinet (75” H x 24” W x 31.5” D) with casters, fans, and product integrationN/A
CAB3x2: Cabinet and Integration 3x21788360U Double Cabinet (67” H x 48” W x 31.5” D) with casters, fans, and product integrationN/A
CAB4x2: Cabinet and Integration 4x21788372U Double Cabinet (75” H x 48” W x 31.5” D) with casters, fans, and product integrationN/A

Learn

White Papers

An Overview of Current-Fed Power Processing

A technical paper on Magna-Power Electronics signature current-fed power processing topology with a comparison to alternative approaches to high-power switch-mode power supply design.

Control Loop Modulation Applied to Programmable DC Power Supplies

Modulation allows a set point adjustment of voltage or current by another input. Modulation signals can be derived from an external device, such as a thermistor, or from sampling output current or voltage.

Getting the Best Performance from AC to DC Power Supplies in Abusive Environments

Five frequently seen power supply integration problems that may affect the product's lifespan and measures for correcting them, including: power supply grounding, line voltage, switching remote sense leads, over current trip fault, and operating environment.

Peak-to-Peak Output Voltage Measurements of Switching Power Supplies

The peak-to-peak output voltage measurement requires a setup that is difficult for customers to replicate. This article explores the methods and physical apparatuses used by Magna-Power to measure peak-to-peak output voltage ripple.

Current-Fed Power Processing—Ride Through Robustness

Magna-Power’s design philosophy focuses on developing power circuits capable of riding through potentially damaging conditions. This article explores this design philosophy in more detail, along with the company's MagnaDC power supply's signature current-fed power processing.
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