SL Series: 1.5 kW to 4 kW
Overview
Innovative and Scalable
Magna-Power Electronics SL Series programmable DC power supply combine the best of DC power processing with microprocessor embedded control. A combination of high and medium frequency power processing technologies improves response, shrinks package size, and reduces cost. All Magna-Power Electronics DC power supplies are current-fed and are more tolerant to abusive loads than conventional switching power supplies. This technology allows the power supply to operate under short-circuit conditions, open-circuit conditions and everything in between.
The programmable DC power supplies offer both master/slave parallel and series operation. This enables two or more power supplies to be placed in parallel for increased output current or in series for increased output voltage, within the unit’s isolation limits. With master/slave operation, power supplies operate at near equal voltage and current. The process of master/slaving power supplies is plug & play with the use of Magna-Power Electronics UID47 option, which can be added at any time.
All supplies can operate as a voltage source or current source depending on the control settings and load conditions. If the power supply is operating as a voltage source and the load increases to a point beyond the current command setting, the power supply automatically crosses over to current mode control and operates as a current source at that setting.
Electronic Output Stage
The novel electronic output stage utilizes near constant power loading under all conditions via an electronic bleed resistance. This electronic bleeder means stability under all operating conditions and faster fall times, without affecting the overall system efficiency.
Attention to Power Quality
All SL Series power supplies contain circuitry to work harmoniously with other power equipment. Step-start contactors are used to keep inrush current below full scale operating current. Filter components lower current harmonic content emanating from the power supply and increase power factor to levels beyond 90%. Every power supply is tested at 90% to 125% nominal line to ensure satisfactory operation even under the worst line voltage conditions.
Fully Programmable
The SL Series power supplies can be programmed and monitored using three possible sources:
- Stepless front panel programming knobs
- External analog/digital signals
- Computer interface through software or SCPI
The power supply can be programmed to have its control functions accessible from the front panel, rear connector, RS232 (standard), LXI TCP/IP Ethernet, IEEE 488.2 GPIB, USB Edgeport, or RS485DSS communications. The included IVI driver enables programming in a variety of software environments, including: Visual C++, Visual C#, Visual Basic .NET, Visual Basic 6.0, LabVIEW, LabWindows/CVI, MATLAB, Measure Foundry, and Agilent VEE Pro. Basic programming requirements are satisfied by the instrument’s supported Standard Commands for Programmable Instruments (SCPI). Sensing can be established at the output terminal of the power supply or through a rear remote sense terminals for sensing at the load. Even calibration has been simplified with front panel access to digital calibration potentiometers.
Isolated External I/O for Automation
Using the rear isolated 37-pin I/O connector, the programmable power supplies can be completely controlled and monitored using external signals. The voltage, current, over voltage and over current set points are set by applying a 0-10V analog signal. Each diagnostic condition is given a designated pin, which reads +5V when high. Reference +5V and +10V signals are provided, eliminating the need for external voltage signals and allowing the use of dry contacts. Also, the power supply features a normally closed external interlock, which when enabled, allows the power supply to be tied in with other emergency stop equipment. All these pins are isolated to earth-ground as standard—no additional isolation equipment or options necessary. For more information, read External Pin (JS1) and PLC Integration Guide.
Specifications
| Input | |
|---|---|
| Nominal Voltage 1 phase, 2 wire + ground (Available on 1.5 kW Models Only) |
85 - 265 Vac, 1Φ (UI—Universal input) |
|
Nominal Voltage 3 phase, 3 wire + ground (Available on All Models) |
208 VAC (operating range 187 - 229 VAC) 240 VAC (operating range 216 - 264 VAC) 380 VAC (operating range 342 - 418 VAC) 415 VAC (operating range 373 - 456 VAC) 440 VAC (operating range 396 - 484 VAC) 480 VAC (operating range 432 - 528 VAC) |
| Frequency | 50 Hz through 400 Hz |
| Power Factor | 0.99 at maximum power for 1Φ units > 0.82 at maximum power for 3Φ units |
| Environmental | |
|---|---|
| Operating Temperature | 0°C to 50°C |
| Storage Temperature | -25°C to +85°C |
| Temperature Coefficient | 0.04 / °C of maximum output current |
| Air Cooling | Side air inlet, rear exhaust |
| Physical | |||
|---|---|---|---|
| Power | Size (H" x D" x W") | Rack Units | Weight |
|
1.5 kW 2.6 kW 4 kW |
1.75" x 19" x 24" (4.44 x 48.3 x 61.0 cm) 1.75" x 19" x 24" (4.44 x 48.3 x 61.0 cm) 1.75" x 19" x 24" (4.44 x 48.3 x 61.0 cm) |
1U 1U 1U |
32 lbs (14.52 kg) 34 lbs (15.42 kg) 35 lbs (15.88 kg) |
| Output | |
|---|---|
| Ripple | See Model Charts |
| 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 |
| Load Transient Response | 2 ms to recover within ±1% of regulated output with a 50% to 100% or 100% to 50% step load change |
| Efficiency | ≥ 86% (See Model Charts) |
| Stability | ± 0.10% for 8 hrs. after 30 min. warmup |
| 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%. With High Slew Rate Option (+HS): 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. With High Slew Rate Option (+HS): 60 Hz with remote analog voltage programming, 45 Hz with remote analog current programming. |
| Isolation |
Maximum input voltage to ground: ±2500 Vac Maximum output voltage to ground: ±1000 Vdc User inputs and outputs: referenced to Earth ground |
| Programming Levels and Accuracy of Full Scale | ||||
|---|---|---|---|---|
|
Voltage Set Point |
Current Set Point |
OVT Set Point |
OCT Set Point |
|
| Remote Analog Programming Accuracy | ± 0.075% | ± 0.075% | ± 0.075% | ± 0.075% |
| Digital Programming Accuracy | ± 0.075% | ± 0.075% | ± 0.075% | ± 0.075% |
| Remote Analog Programming Levels | 0 - 10.0 Vdc | 0 - 10.0 Vdc | 0 - 10.0 Vdc | 0 - 10.0 Vdc |
| Monitoring Levels and Accuracy of Full Scale | ||
|---|---|---|
| Output Voltage | Output Current | |
| Remote Analog Monitoring Accuracy | ± 0.2% | ± 0.2% |
| Digital Monitoring Accuracy | ± 0.2% | ± 0.2% |
| Remote Analog Monitoring Levels | 0 - 10.0 V | 0 - 10.0 V |
| Control Limits | |
|---|---|
| Remote Sense Limits | 3% maximum voltage drop from output to load |
| Period Programming Limits |
Minimum period: 10 msec Maximum Period: 9997 sec or 2.77 hours |
| Digital control inputs and outputs limits |
Input voltage: 0 to 5 Vdc, 10K input impedance; Output voltage: 0 to 5 Vdc, 5 mA drive capacity 5 V supply: 25 mA. |
Model Ordering Guide
Models Chart
The following chart details the available standard SL Series models. The Current Maximum (Adc) column is separated by the available power levels. To determine the appropriate model, first select your output Voltage Maximum (Vdc) to find appropriate row. Next, select one desired Current Maximum from the row that contains your desired Voltage Maximum. Then, construct your model number according to the model ordering guide, above. Non-standard voltage and current configurations are available.
| 1.5 kW | 2.6 kW | 4 kW | |||
|---|---|---|---|---|---|
| Voltage Maximum | Current Maximum | Ripple (mVrms) | Efficiency (%) | ||
| 5 | 250 | N/A | N/A | 50 | 86 |
| 10 | 150 | 250 | N/A | 40 | 86 |
| 16 | 93 | 162 | 250 | 35 | 86 |
| 20 | 75 | 130 | 200 | 40 | 86 |
| 32 | 46 | 81 | 125 | 40 | 86 |
| 40 | 37 | 65 | 100 | 40 | 87 |
| 50 | 30 | 52 | 80 | 50 | 87 |
| 80 | 18 | 32 | 50 | 60 | 87 |
| 100 | 15 | 26 | 40 | 60 | 87 |
| 125 | 12 | 20 | 32 | 100 | 87 |
| 160 | 9 | 16 | 25 | 120 | 87 |
| 200 | 7.5 | 13 | 20 | 125 | 87 |
| 250 | 6 | 10.4 | 16 | 130 | 88 |
| 375 | 4 | 6.9 | 10.4 | 170 | 88 |
| 400 | 3.7 | 6.5 | 10 | 180 | 88 |
| 500 | 3 | 5.2 | 8 | 220 | 88 |
| 600 | 2.5 | 4.3 | 6.4 | 250 | 88 |
| 800 | 1.8 | 3.2 | 5.0 | 300 | 88 |
| 1000 | 1.5 | 2.6 | 4.0 | 350 | 88 |
| Input Current Per Phase (Aac) | |||||
| UI (85 - 265 Vac, 1Φ) | 21 - 7 | N/A | N/A | ||
| 208/240 Vac, 3Φ | 6 | 11 | 16 | ||
| 380/415 Vac, 3Φ | 5 | 8 | 11 | ||
| 440/480 Vac, 3Φ | 4 | 6 | 9 | ||
Note: Ripple specified for standard models. For models with the High Slew Rate Output Option (+HS), ripple will be higher.
Front Panel Controls
SL Front Panel
SL models provide stepless analog control from front panel potentiometers. With a simple configuration change, the power supply can also be programmed from the rear 37-pin analog-digital I/O connector or through software on one of the communication interfaces.
Computer and Analog-Digital I/O Control Only - C Version Front Panel
SL models utilizing the C Version front panel, SLC, only allow control from the rear 37-pin analog-digital I/O connectoror by RS232, IEEE-488 GPIB, LXI TCP/IP Ethernet, USB, or RS485 communications. These models are intended for process control applications where front panel controls and displays are not required or desired.
Software Controls
Remote Interface Software
In addition to the IVI Driver and embedded SCPI command set for custom programming, the Remote Interface Software (RIS Panel) ships with all SL Series power supplies. The software provides the user with a quick method to operate a Magna-Power Electronics power supply under computer control. The Remote Interface Software has six windows: the Virtual Control Panel, Command Panel, Register Panel, Calibration Panel, Firmware Panel, and Modulation Panel. The Virtual Control Panel emulates the front panel of the SL Series power supply, the Command panel programs and reads SCPI commands with user friendly buttons, the Register Panel programs and reads registers, the Calibration Panel enables calibration of the digital potentiometers, the Firmware Panel enables the program stored internal to the power supply to be upgraded, and the Modulation Panel eases programming of modulation parameters. RIS Panel is available for download.
| Definitions for SL Series Front Panel Controls | |
|---|---|
| A |
MODE 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 settings CLEAR: Clears setting or resets fault ENTER: Selects item |
| C | Meters display output voltage, output current, voltage set point, current set point, over voltage trip, and over current trip |
| D | Power switch energized control circuits without engaging main power |
| E | Engages and disengages main power |
| F | Stepless rotary knob to set voltage/current |
| G |
DIAGNOSTIC ALARMS LOC: Interlock PGL: External input voltage beyond limits THL: Indicates over-temperature condition OVT: Over-voltage protection has tripped OCT: Over-current protection has tripped |
| H |
CONFIGURATION REM SEN: Remote sense enabled INT CTL: Front panel start/stop/clear enabled EXT CTL: External start/stop/clear enabled ROTARY: Front panel control EXT PGM: External voltage/current control REMOTE: Computer control |
Diagrams
| Definitions for SL Series Diagrams | |
|---|---|
| 1 | Front Panel Handles (Removable) |
| 2 | Remote Sense Connections |
| 3 | Computer and External Control Connections |
| 4 | Rear Air Exhaust |
| 5 | Output DC Connections, 0.25” x 0.75” Tin Plated Copper Bus, Qty (2) 3/8-16 Threaded Insert |
| 6 | Input AC Connections, 38660 Molex Input Connector |
| 7 | 10-32 Ground Stud |
| 8 | Side Air Intake |
| 9 | Qty (2) Rear Metal Covers (Removable) |
SL Series drawings along with the definitions can also be found in the SL Series Datasheet.
Front Panel Dimensions
Rear Panel Dimensions
Top View (Rear Side) Dimensions
Side Panel Dimensions
Communications Dimensions
| Title | Last Updated | Version | Software Link |
|---|---|---|---|
| IVI Driver | 03/02/2013 | 1.5.1.0 | Download |
| LabVIEW Driver | 11/18/2011 | 1.02 | Download |
| LabWindows™ Driver | 11/18/2011 | 1.02 | Download |
| Photovoltaic Power Profile Emulation (PPPE) Software | 05/02/2013 | 2.0.0.6 | Download |
| Remote Interface Software (RIS Panel) | 03/03/2013 | 1.23.1 | Download |
| SL Series User Manual | 02/04/2013 | 1.0 | Download |
| UID47: Universal Interface Device User's Manual | 03/24/2012 | A | Download |
SL Series Datasheet
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