XR Series IV User Manual
Programmable DC Power Supply
Higher Quality Power Processing
User Manual
XR Series 4 User Manual
Author Magna-Power Electronics info@magna-power.com
Copyright © 2014 Magna-Power Electronics, Inc. All Rights Reserved.
Magna-Power Electronics® is a registered trademark of Magna-Power Electronics, Inc.
All other trademarks are the property of their respective owners.
39 Royal Road
Flemington, NJ 08822 USA
Phone: +1-908-237-2200
Fax: +1-908-237-2201
info@magna-power.com
This User Manual provides installation instructions, operating procedures, and product specifications
for the XR Series IV programmable DC power supply. Contents of this User Manual are subject to
change without notice.
Preface v
1. Safety Notice .................................................................................................................. v
2. Limited Warranty ............................................................................................................. v
2.1. Claim for Damage in Shipping .............................................................................. vi
2.2. Returning Equipment ........................................................................................... vi
3. Declaration of Conformity ............................................................................................... vii
4. Document Conventions .................................................................................................. vii
4.1. Notes and Warnings ............................................................................................ vii
4.2. Text Conventions ................................................................................................ viii
5. Getting Help and Giving Feedback ................................................................................ viii
5.1. Additional Support .............................................................................................. viii
5.2. Feedback ........................................................................................................... viii
1. Product Information 1
1.1. Key Features ............................................................................................................... 1
1.2. Principle of Operation ................................................................................................... 2
1.3. Specifications ............................................................................................................... 3
1.4. Models ......................................................................................................................... 6
1.5. Diagrams and Indicators ............................................................................................... 7
1.6. Product Options ........................................................................................................... 9
1.6.1. High Isolation Output (+ISO) .............................................................................. 9
1.6.2. High Slew Rate Output (+HS) .......................................................................... 10
1.6.3. IEEE-488 GPIB Interface (+GPIB) .................................................................... 13
1.6.4. LXI TCP/IP Ethernet Interface (+LXI) ................................................................ 13
1.6.5. UID47: Universal Interface Device (+UID) ......................................................... 14
1.6.6. USB Edgeport (+USB) ..................................................................................... 14
1.6.7. Water Cooling (+WC) ....................................................................................... 14
2. Installation 17
2.1. Product Inspection ...................................................................................................... 17
2.2. Rack Installation and Cooling ...................................................................................... 17
2.3. AC Input Connections ................................................................................................. 17
2.4. DC Output Connections .............................................................................................. 19
2.4.1. DC Output Configuration for Models 1000 Vdc and Below .................................. 19
2.4.2. DC Output Configuration for Models Above 1000 Vdc ........................................ 19
2.4.3. Remote Voltage Sensing .................................................................................. 19
2.5. Electrical Check ......................................................................................................... 21
2.5.1. Electrical Check for Models with XR Version Front Panel .................................... 21
2.5.2. Electrical Check for Models with C Version Front Panel ...................................... 22
3. Operation 23
3.1. Output Regulation Modes ........................................................................................... 23
3.1.1. Constant Voltage ............................................................................................. 23
3.1.2. Constant Current ............................................................................................. 23
3.1.3. Pulse Loading ................................................................................................. 23
3.2. Front Panel Commands .............................................................................................. 24
3.2.1. Run Mode Commands ..................................................................................... 24
3.2.2. Set Point Commands ....................................................................................... 25
3.2.3. Configuration Commands ................................................................................. 26
3.2.4. Calibration Commands ..................................................................................... 28
3.3. External 37-pin (JS1) I/O Programming and Operation .................................................. 29
3.3.1. External 37-pin I/O Pin Definitions .................................................................... 30
3.3.2. External Analog Programming .......................................................................... 33
3.3.3. External Analog Monitoring .............................................................................. 35
3.3.4. Digital Input Lines ............................................................................................ 35
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User Manual
3.3.5. Digital Output Lines ......................................................................................... 36
3.4. Parallel and Series Operation ..................................................................................... 37
3.4.1. Parallel Operation ............................................................................................ 37
3.4.2. Series Operation .............................................................................................. 39
3.5. Troubleshooting Guide ................................................................................................ 41
3.6. Calibration .................................................................................................................. 42
3.6.1. Contol Board ................................................................................................... 42
3.6.2. Driver Board .................................................................................................... 43
4. Remote Interface Software 45
4.1. Application Setup ....................................................................................................... 45
4.2. Virtual Control Panel .................................................................................................. 47
4.3. Command Panel ........................................................................................................ 47
4.4. Register Panel ........................................................................................................... 48
4.5. Calibration Panel ........................................................................................................ 49
4.6. Firmware Panel .......................................................................................................... 50
4.7. Modulation Panel ....................................................................................................... 51
5. Computer Programming 53
5.1. SCPI Commands ........................................................................................................ 53
5.1.1. Parameter Data Types ..................................................................................... 53
5.1.2. Restricted SCPI Command Set ........................................................................ 54
5.1.3. Calibration Commands ..................................................................................... 56
5.1.4. Configuration Commands ................................................................................. 58
5.1.5. Measure Commands ........................................................................................ 61
5.1.6. Modulation Commands .................................................................................... 61
5.1.7. Output Commands ........................................................................................... 64
5.1.8. Source Commands .......................................................................................... 66
5.1.9. Status Commands ........................................................................................... 70
5.1.10. System Commands ........................................................................................ 72
5.1.11. Trigger Commands ......................................................................................... 73
5.2. RS232 Communications ............................................................................................. 74
5.3. IEEE-488 GPIB Communications ................................................................................ 75
5.3.1. IEEE-488 GPIB Communication using the Remote Interface Software ................. 76
5.3.2. IEEE-488 GPIB Communications with MAX ....................................................... 76
5.3.3. IEEE-488 GPIB SCPI Commands and Registers ............................................... 77
5.4. LXI TCP/IP Ethernet Communications ......................................................................... 82
5.4.1. Connectivity and IP Address Negotiation ........................................................... 83
5.4.2. LXI TCP/IP Ethernet Control and Discovery Methods ......................................... 84
5.4.3. LXI TCP/IP Ethernet SCPI Commands .............................................................. 88
5.5. USB Communications ................................................................................................. 91
5.5.1. USB Edgeport/1 Setup ..................................................................................... 92
5.5.2. USB Edgeport/1 Communications Using the Remote Interface Software .............. 92
5.6. RS485 Communications ............................................................................................. 92
5.6.1. RS485 Adapter Initial Setup ............................................................................. 93
5.7. IVI-COM Driver .......................................................................................................... 95
6. Applications 97
6.1. Power Waveform Generation ...................................................................................... 97
6.2. Leadless Remote Sensing .......................................................................................... 98
6.3. Photovoltaic Cell Simulator ......................................................................................... 98
6.4. Battery Charger .......................................................................................................... 99
6.5. Constant Power Operation ........................................................................................ 102
A. Revision History 105
iv
Preface
1. Safety Notice
Before applying power to the system, verify that the unit is configured properly for the user’s particular
application.
CE recognition of XR Series IV programmable DC power supplies is based on rack-mounted
applications only. Use of these power supplies outside of a rack mount equipment enclosure will
expose the user to high voltage and/or high current sources. Extreme caution must be used under
these circumstances.
Two or more XR Series IV programmable DC power supplies may be connected in series. Regardless
of the number of units or the voltage ratings of the series connected power supplies, the voltage
potential from any output terminal to chassis ground should not exceed the product's isolation rating
of ±1000 Vdc for models rated for 1000 Vdc and below. For models above 1000 Vdc, the output is
not isolated; for these models, series operation can only be achieved through connecting a positively
grounded supply to a negatively grounded supply, providing a plus and minus configured series
system.
Installation and service must be performed only by properly trained and qualified personnel who are
aware of dealing with electrical hazards. Ensure that the AC power line ground is properly connected
to the power supply chassis. Furthermore, other power grounds, including those connected to
application maintenance equipment, must be grounded for both personnel and equipment safety.
Always ensure that facility AC input power is de-energized prior to connecting or disconnecting the
input and output power cables.
Caution: Lethal voltages may be present inside the power supply even when the AC
input voltage is disconnected. Only properly trained and qualified personnel should
remove covers and access the inside of the power supply.
During normal operation, the operator does not have access to hazardous voltages within the cabinet.
Depending on the user’s application, high voltages hazardous to human safety may be generated
normally on the output terminals. Ensure that the output power cables are properly labeled as to the
safety hazards and that any inadvertent contact with hazardous voltages is eliminated.
This power supply is designed to be permanently connected to the power source requiring a readily
accessible disconnect device incorporated in the fixed wiring.
These operating instructions form an integral part of the equipment and must be available to the
operating personnel at all times. All the safety instructions and advice notes are to be followed.
Neither Magna-Power Electronics, Inc. nor any of the associated sales organizations can accept
responsibility for personal injury, consequential injury, loss, or damage resulting from improper use of
the equipment and accessories.
2. Limited Warranty
The following is made in lieu of all warranties expressed or implied.
Magna-Power Electronics, Inc. warranties its products to be free of manufacturing defects for a period
of two (2) years from date of original shipment from its factory. Magna-Power Electronics, Inc. will
v
Preface
repair, replace, or refund the purchase price at its discretion, which upon examination by MagnaPower Electronics, Inc., is determined to be defective in material or workmanship, providing such
claimed defective material is returned upon written authorization of Magna-Power Electronics, Inc.,
freight prepaid.
For products failing within the first 30 days of the warranty period, Magna-Power Electronics, Inc.
will return the repaired product at its expense using a standard shipping method; after 30 days of the
warranty period, the repaired product will be returned at the customer's expense using the customer's
requested shipping method.
Damage due to corrosion, customer alterations, excessive dust, extreme environmental or electrical
conditions, and/or misuse will be evaluated upon inspection. If inspection reveals that the cause of
damage is not due to materials or workmanship, repair of the product will be treated on a non-warranty
basis.
All electrical, commercial supply parts, and items not manufactured by Magna-Power Electronics,
Inc. shall carry the warranty of the original manufacturer and no more, but under no circumstances to
exceed the warranty period. Replacement parts shall be warranted for a period of 90 days.
Warranty labor shall only apply if the product, assembly, or part is returned to the factory freight
prepaid and insured. Damage or breakage while in transit is not covered by this warranty.
Magna-Power Electronics, Inc. assumes no responsibility to Buyer for labor to diagnose and remove
defective product and installation of replacement product. Furthermore, Magna-Power Electronics,
Inc. is not liable to Buyer or to any third party for consequential or incidental damages under any
circumstances, whether due to defect in the product, due to delay or failure of delivery, due to a failure
of the product to perform as specified, or for any other reason or cause. Buyer and Magna-Power
Electronics, Inc. agree that Buyer's sole remedy and Magna-Power Electronics, Inc.'s sole liability to
Buyer is limited to repair, replacement, or refund of the purchase price of the product as described
herein, whether Buyer's claim arises out of contract or in tort.
All claims against the warranty shall be the final determination of Magna-Power Electronics, Inc.
2.1. Claim for Damage in Shipping
This instrument received comprehensive mechanical and electrical inspections before shipment.
Immediately upon receipt from the carrier, and before operation, this instrument should be inspected
visually for damage caused in shipment. If such inspection reveals internal or external damage in any
way, a claim should be filed with the carrier. A full report of the damage should be obtained by the
claim agent and this report should be forwarded to us. We will then advise you of the disposition to
be made of the equipment and arrange for repair or replacement. When referring to this equipment,
always include the model and serial numbers.
2.2. Returning Equipment
Before returning any equipment to the factory, the following steps should be observed:
• Contact our technical service department or file a RMA request (http://www.magna-power.com/
support/rma-request). Give a full description of the difficulty and include the model and serial
number of the unit. Upon receipt of this information, we will give you service information or shipping
instructions.
• Packaging and method of shipment must be coordinated with the factory to insure safe delivery.
All equipment returned for repair requires a Return Authorization Number and must be insured. No
returns will be accepted without assignment of a Return Authorization Number.
vi
Declaration of Conformity
• For non-warranty repairs, we will submit a cost estimate for your approval before proceeding.
3. Declaration of Conformity
The Declaration of Conformity is included with all products on the calibration certificate. An additional
digital copy is available by request at no charge for all Magna-Power Electronics products. To receive
an additional digital copy of the product's Declaration of Conformity, email your product's serial number
to support@magna-power.com
4. Document Conventions
This user's manual uses several conventions to highlight certain words and phrases and draw
attention to specific pieces of information.
In PDF and paper editions, this manual uses typefaces drawn from the Liberation Fonts1 set. The
Liberation Fonts set is also used in HTML editions if the set is installed on your system. If not,
alternative but equivalent typefaces are displayed.
4.1. Notes and Warnings
Note
Notes are tips, shortcuts or alternative approaches to the task at hand. Ignoring a note should
have no negative consequences, but you might miss out on a time saving procedure.
4.1.1. Safety Symbols
Table 1, “ Safety Symbols” defines the IEC symbols used throughout this Users Manual for the XR
Series IV.
Table 1. Safety Symbols
Symbol Definition
Earth ground, protective conductor terminal
Caution, risk of electric shock
Caution, risk of danger
Three-phase alternating current
1
https://fedorahosted.org/liberation-fonts/
vii
Preface
4.2. Text Conventions
Source-code listings are also set in mono-spaced roman but add syntax highlighting as follows:
package org.jboss.book.jca.ex1;
import javax.naming.InitialContext;
public class ExClient
{
public static void main(String args[])
throws Exception
{
InitialContext iniCtx = new InitialContext();
Object ref = iniCtx.lookup("EchoBean");
EchoHome home = (EchoHome) ref;
Echo echo = home.create();
System.out.println("Created Echo");
System.out.println("Echo.echo('Hello') = " + echo.echo("Hello"));
}
}
Terms and definitions are highlighted as follows:
Sample title for reference and definition list
Sample Term
Sample Definition
5. Getting Help and Giving Feedback
5.1. Additional Support
If you experience difficulty with a procedure described in this documentation, visit the Magna-Power
Electronics Support Portal at http://www.magna-power.com/support. Through the Support Portal, you
can:
• Search or browse through a knowledge base of technical support articles about Magna-Power
Electronics products
• Access the most up-to-date searchable and browseable product documentation, such as this User's
Manual
• Review application notes and guides for key product applications
5.2. Feedback
If you find a typographical error in this manual, or if you have an idea how to make this manual better,
we would like to hear from you. Please submit an email report to: support@magna-power.com against
the product XR Series IV.
When submitting a bug report, be sure to mention the manual's identifier: XR Series IV User Manual
If you have a suggestion for improving the documentation, try to be as specific as possible when
describing it. If you have found an error, please include the section number and some of the
surrounding text so we can find its location.
viii
Chapter 1.
Product Information
This chapter introduces the technology behind the XR Series IV Programmable DC Power Supply
1.1. Key Features
Magna-Power Electronics XR Series IV combines the best of DC power processing with
microprocessor embedded control. Magna-Power Electronics innovative power processing technology
improves response, shrinks package size, and reduces cost. XR Series IV power supplies are currentfed and are more tolerant to abusive loads than conventional switching power supplies.
XR Series IV power supplies can operate as a voltage source or a 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.
XR Series IV power supplies incorporate an optically isolated feedback system. The result is that
all user interface circuitry is referenced to earth ground, not the negative terminal of the power
supply. This enables users to connect external circuitry without concern of ground loops or voltage
breakdown, up to the full isolation rating of the power supply.
XR Series IV 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. With master/slave operation, power supplies operate at near equal voltage and current.
XR Series IV power supplies can be configured through the front panel for different applications.
The power supply can be programmed to have its control functions accessible from the front panel,
rear 37-pin connector, or with RS232, IEEE-488 GPIB (+GPIB), or LXI TCP/IP Ethernet (+LXI)
communications. External RS485 to RS232 (+RS485) and external USB to RS232 (+USB) converters
are also available to echo commands over the communications network. Communication options must
be specified at time of order. XR Series IV power supplies support a full set of SCPI commands. IVI
drivers are available which support programming in Visual C++, Visual C#, Visual Basic .NET, Visual
Basic 6.0, LabVIEW, LabWindows/CVI, MATLAB, Measure Foundry, and Agilent VEE Pro.
Sensing can be established at the output terminal of the power supply or through a rear terminal block
for remote sensing at the load. A smart remote sense detector checks whether or not sense leads are
present eliminating the potential of uncontrolled operation. An external interlock can be set to enable
operation only when an external connection is made. Even calibration has been simplified with front
panel access to calibration digital potentiometers.
XR Series IV power supplies have three levels of over voltage/current protection: shutdown of
controlling insulated gate bipolar transistors (IGBTs), disconnect of main power, and input fuses. After
an over voltage/current trip condition, the supply must be reset using the Clear functionality.
XR Series IV power supplies have push button start/stop controls. These controls are tied to a
mechanical contactor which operates with the electronic switches to break the AC mains when stop is
commanded. Off means both an electrical and mechanical break in the power circuit—not just a break
in an electronic switch. Safety comes first at Magna-Power Electronics.
XR Series IV power supplies are available with two alternative front panels: XR Version for analog/
digital control and C Version for computer or programmable logic control. All XR Series IV power
supplies employ the same power processing engine.
XR Series IV models utilizing the XR Version front panel provide stepless analog control from front
panel potentiometers. With simple configuration changes, voltage, current, over voltage trip, and over
current trip may be programmed from the 37-pin isolated I/O, RS232, IEEE-488 GPIB (+GPIB), LXI
1
Chapter 1. Product Information
TCP/IP Ethernet (+LXI), Edgeport USB (+USB). XR Series IV power supplies with XR Version front
panels are well suited for industrial and laboratory applications.
XR Series IV power supplies with the XR Version front panels offer an analog input to modulate the
voltage or current setting using piecewise linear approximation. This feature enables the voltage or
current setting to be adjusted by a sensor input, such as a thermistor, or by monitoring its own voltage
or current. Modulation allows the output to be tailored for advanced process control applications,
battery charging, and source emulation.
XR Series IV models utilizing the C Version front panel only allow control from the 37-pin isolated I/
O, RS232, IEEE-488 GPIB (+GPIB), LXI TCP/IP Ethernet (+LXI), or Edgeport USB (+USB). These
models are intended for process control applications where front panel controls and displays are not
required or desired.
Remote Interface Software is included to provide sophisticated computer control. This software
provides a virtual control panel to emulate the power supply's front panel, a command panel to send
and monitor SCPI commands, a register panel to monitor registers, a calibration panel to provide easy
access to calibrate digital potentiometers, a firmware panel to upgrade the control microprocessor, and
a modulation panel to easily program modulation parameters.
XR Series IV models have extensive diagnostic functions—all of which when activated take command
to shut down the system. Diagnostic functions include phase loss, excessive thermal conditions, over
voltage trip, over current trip, and program line. Program line monitors externally applied analog set
point signals to insure they are within the specified range. Upon a diagnostic fault condition, main
power is disconnected and the diagnostic condition is latched into memory. Pressing the clear key
clears the memory. All diagnostic functions can be monitored through a rear connector. Furthermore,
control functions can also be set through the rear connector to allow simultaneous control of one or
more XR Series IV units.
Finally, XR Series IV models rated for 16 Vdc and above have a novel electronic output stage that
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.
1.2. Principle of Operation
This section provides a general overview of the technology and power processing stages in a MagnaPower Electronics XR Series IV. Figure 1.1, “XR Series IV functional block diagram” provides an visual
overview of the power supply's main power and control stages.
Power is fed through AC fuses and is distributed to the auxiliary power supply, inrush limiter, and main
3Φ contactor. The auxiliary power supply operates off the AC mains, supplying power to the other
printed circuit boards in the system. The inrush limiter is a step start device which is used to initially
charge capacitors on the input DC bus and limit the inrush of current. The inrush limiter is initiated
when the power supply is switched from a standby to a power state. After the charge cycle, the main
3Φ contactor is energized and power is allowed to flow to the load. The EMI filter reduces common
mode and differential mode noise emanating from the supply.
Output power is controlled through a polyphase chopper. For a 6 kW, 8 kW and 10 kW XR Series IV
power supplies, three choppers, phased 120° apart, provide a current source to a current fed inverter.
The 4 kW XR Series IV power supplies uses two choppers, phased 180° apart, and the 2 kW supplies
uses only one chopper. The choppers are controlled with current mode, pulse width modulation
(PWM). This modulation scheme provides a quick response for transients and filtering harmonics on
the DC bus. As illustrated, chopper output current is monitored for balancing and for sensing overload
current conditions. The polyphase chopper has been engineered to eliminate harmonic components
minimizing currents circulating in the power supply.
2
Specifications
The polyphase chopper produces a controlled DC bus which is connected to DC link inductors and
current fed, IGBT inverter. The inverter, which operates above 20 kHz, excites the main transformer at
higher than normal line frequencies. This operation produces ohmic isolation between the input and
output of the power supply using a transformer of dramatically reduced size.
The inverter operates with a 50% duty cycle and its frequency operation is transparent to the
performance of the power supply.
The output of the main power transformer is converted to DC via rectifiers. Low voltage versions of the
XR Series IV power supply use midpoint diode configurations and higher voltage versions use bridge
configurations.
The DC output voltage is filtered with a pi section filter. This, in combination with the DC link inductors,
form a double stage inductive capacitive (LC) filter.
The gate driver board supports a synchronized modulation scheme which integrates power
semiconductor switching of the switching power supply, polyphase chopper, and IGBT inverter.
The phase detector senses input line voltage on each phase. Upon detection of a problem, the control
board is signaled to shutdown the system. The control board, which is referenced to earth ground,
contains optically isolated amplifiers to sense output voltage and current. This circuitry allows the
output to be referenced ±1000 Vdc above earth ground.
The display board contains light-emitting diodes for displaying diagnostic conditions and provides an
interface for meters and switches.
Figure 1.1. XR Series IV functional block diagram
1.3. Specifications
This section details the product specifications for the XR Series IV. If additional product specifications
are required, please contact Magna-Power Electronics by emailing support@magna-power.com. Make
sure to include your product's model and serial number along with your desired specification.
Specifications are subject to change without notice. For three-phase configurations, input
specifications are line-to-line, specified at 208 Vac, 380 Vac, and 440 Vac input. Unless otherwise
noted input voltages and currents are specified for three-phase configurations.
Table 1.1. XR Series IV Physical Specifications
Physical Specifications
Power Size (H" x W" x D") Weight
2 kW 3.50 x 19 x 24 in (8.89 x 48.3 x 61.0cm) 45 lbs. (20.41 kg)
4 kW 3.50 x 19 x 24 in (8.89 x 48.3 x 61.0cm) 47 lbs. (20.32 kg)
6 kW 3.50 x 19 x 24 in (8.89 x 48.3 x 61.0cm) 48 lbs. (20.77 kg)
3
Chapter 1. Product Information
Physical Specifications
Power Size (H" x W" x D") Weight
8 kW 3.50 x 19 x 24 in (8.89 x 48.3 x 61.0cm) 48 lbs. (20.77 kg)
10 kW 3.50 x 19 x 24 in (8.89 x 48.3 x 61.0cm) 48 lbs. (20.77 kg)
Table 1.2. XR Series IV Input Specifications
Input Specifications
Nominal Voltage
3 phase, 3 wire + ground
1 phase, 2 wire + ground (2
kW Models Only)
Frequency 50 Hz - 400 Hz (operating range 45 - 440 Hz)
Power Factor > 92% at maximum power
Table 1.3. XR Series IV Output Specifications
Output Specifications
Ripple (See Table 1.6, “XR Series IV Models”)
Line Regulation Voltage Mode: ±0.004% of full scale
Load Regulation Voltage Mode: ±0.01% of full scale
Load Transient Response 2 ms to recover within ±1% of regulated output, with a 50% to 100%
208 Vac, 3Φ (operating range 187 - 229 Vac)
240 Vac, 3Φ (operating range 216 - 264 Vac)
380 Vac, 3Φ (operating range 342 - 418 Vac)
415 Vac, 3Φ (operating range 373 - 456 Vac)
440 Vac, 3Φ (operating range 396 - 484 Vac)
480 Vac, 3Φ (operating range 432 - 528 Vac)
208 Vac, 1Φ (operating range 187 - 229 Vac)
240 Vac, 1Φ (operating range 216 - 264 Vac)
Voltage Mode: ±0.02% of full scale
Current Mode: ±0.04% of full scale
or 100% to 50% step load change
Efficiency > 86% at full load (See Table 1.6, “XR Series IV Models”)
Stability ±0.10% for 8 hrs. after 30 min. warmup
Isolation Use inputs and outputs referenced to earth ground
Maximum input voltage to ground ±2500 Vac
Maximum output voltage to ground:
±1000 Vdc for models less than or equal to 1000 Vdc
No output isolation on models above 1000 Vdc, specify positive or
negative output grounded
Maximum Slew Rate Standard Models, 1000 Vdc and below:
100 ms for output voltage change from 0 to 63%
100 ms for output current change from 0 to 63%
With High Slew Rate Option (+HS) and models greater than 1000
Vdc:
4 ms for output voltage change from 0 to 63%
8 ms for output current change from 0 to 63%
Bandwidth Standard Models, 1000 Vdc and below:
3 Hz for remote analog voltage programming
2 Hz for remote analog current programming
With High Slew Rate Option (+HS) and models greater than 1000
Vdc:
60 Hz for remote analog voltage programming
4
Output Specifications
45 Hz for remote analog current programming
Table 1.4. XR Series IV Control Specifications
Control Specifications
Voltage Programming Accuracy ±0.075% of full scale voltage
OVT Programming Accuracy ±0.075% of full scale voltage
Current Programming Accuracy ±0.075% of full scale current
OCT Programming Accuracy ±0.075% of full scale current
Voltage Readback Accuracy ±0.2% of full scale voltage
Current Readback Accuracy ±0.2% of full scale current
Specifications
External Analog Programming and
Monitoring Levels
External Analog Output
Impedances
External Digital Programming and
Monitoring Limits
Remote Sense Limits 3% maximum voltage drop from output to load
Table 1.5. XR Series IV Environmental Specifications
Environmental Specifications
Ambient Operating Temperature 0°C to 50°C
Storage Temperature -25°C to 85°C
Humidity Relative humidity up to 95% non-condensing
Temperature Coefficient 0.04 %/°C of maximum output voltage
Air Flow Side air inlet, rear exhaust
0 - 10 Vdc
Voltage output monitoring: 100Ω
Current output monitoring: 100Ω
+10V reference: 1Ω
Input: 0 to 5 Vdc, 10kΩ input impedance
Output: 0 to 5 Vdc, 5 mA drive capacity
No remote sense on models above 1000 Vdc
0.06 %/°C of maximum output current
XR Series IV Agency Approvals
EN61010-1:2001-02
Safety Requirements for Electrical Equipment for Measurement, Control, and Laboratory Use
2004/108/EC
EMC Directive
EN61000-6-3:2001 and EN61000-6-3:2001
General Emissions Standard
EN55022 Class A
Product Specifications Emissions
EN61000-6-1:2001
Generic Immunity Standard, including the following cross references: EN61000-4-2 (Electrostatic
Discharge), EN61000-4-3 (Radiated Susceptibility), EN61000-4-4 (Electrical Fast Transient/Burst),
EN61000-4-6 (Conducted Susceptibility), EN61000-4-8 (Magnetics), EN61000-4-11 (Voltage Dips
and Interruptions)
5
Chapter 1. Product Information
1.4. Models
Figure 1.2. XR Series IV model ordering guide
Table 1.6, “XR Series IV Models” details the available standard XR Series IV 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
you model number according to the Figure 1.2, “XR Series IV model ordering guide”. Non-standard
voltage and current configurations are available. Models above 1000 Vdc have high slew rate output.
For models 1000 Vdc and below with the High Slew Rate Output Option (+HS), ripple will be higher.
Table 1.6. XR Series IV Models
2 kW 4 kW 6 kW 8 kW 10 kW
Voltage
Maximum (Vdc)
5 375 600 N/A N/A N/A 50 86
10 200 375 600 N/A N/A 50 86
16 125 250 375 500 600 50 86
20 100 200 300 375 500 45 86
32 62 124 186 250 310 40 86
40 50 100 150 200 250 40 87
50 40 80 120 160 200 50 87
80 25 50 75 100 125 60 87
100 20 40 60 80 100 60 87
125 16 32 48 64 80 100 87
160 12 24 36 50 60 120 87
200 10 20 30 40 50 125 87
250 8 16 24 32 40 130 88
Current Maximum (Adc) Ripple
(mVrms)
Efficiency
(%)
375 5.3 10.6 15.9 21.3 26.5 170 88
400 5.0 10.0 15.0 20.0 25 180 88
500 4.0 8.0 12 16.0 20 220 88
600 3.3 6.6 9.9 13.3 16.5 250 88
800 2.5 5.0 7.5 10.0 12.5 300 88
1000 2.0 4.0 6.0 8.0 10 350 88
2000 1.00 2.00 3.00 4.00 N/A 5500 88
4000 0.50 1.00 1.50 2.00 N/A 6500 88
6
2 kW 4 kW 6 kW 8 kW 10 kW
Diagrams and Indicators
Voltage
Maximum (Vdc)
6000 0.30 0.66 1.00 1.33 N/A 7500 88
8000 0.25 0.50 0.75 1.00 N/A 8500 88
10000 0.20 0.40 0.60 0.80 N/A 9500 88
208/240 Vac, 1Φ 16 N/A N/A N/A N/A
208/240 Vac, 3Φ 8 15 22 29 36
380/415 Vac, 3Φ 5 9 13 17 21
440/480 Vac, 3Φ 4 8 11 15 18
Current Maximum (Adc) Ripple
(mVrms)
Maximum Input Current (Aac)
Efficiency
(%)
1.5. Diagrams and Indicators
This section provides diagrams detailing the XR Series IV front panel layout and physical dimensions.
The definitions for the digram references are detailed in after the diagrams.
Figure 1.3. XR Version front panel layout
Figure 1.4. XRC Version front panel layout
Figure 1.5. XR Series IV rear panel layout and dimensions, models 1000 Vdc and below
7
Chapter 1. Product Information
Figure 1.6. XR Series IV rear panel layout and dimensions, models above 1000 Vdc
Figure 1.7. XR Series IV side panel layout and dimensions, models 1000 Vdc and below
Figure 1.8. XR Series IV side panel layout and dimensions, models above 1000 Vdc
Figure 1.9. XR Series IV high voltage output cable, models above 1000 Vdc
Front Panel Definitions
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 energizes control circuits
without engaging main power
Rear and Side Panel Definitions
1
Rear Air Exhaust
2
Output DC Connections (Front View)
3
Computer and External Control Connections
4
Remote Sensing Connector
5
Input AC Connections, 10-32 Threaded
Insert, Qty (4)
6
Front Panel Handles
7
Side Air Intake
8
Product Options
37
19
1
20
5
1
9
6
(c)
(a)
24 12
113
(d) (e)
1
8
1
2
(b)
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
PHL: Indicates under-voltage AC input
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
8
Output DC Connections (Side View), 0.250
x 1.000 Tin Plated Copper Bus, 3/8-16
Threaded Insert, Qty (2)
9
Included Rear Protective Metal Cover
10
Output HV DC Connections (Side View),
83-1R Receptacle, High Voltage Mating
Cable Provided
11
RG-8/U Coaxial Cable
12
PL-259 Connector
Figure 1.10. XR Series IV communication connections: (a) JS1, external program interface; (b) JS2,
remote sense, 6-32 connections; (c) JS3, RS232; (d) JS4, IEEE-488 GPIB; and (e) JS5, LXI TCP/IP
Ethernet (viewed from female end)
1.6. Product Options
This sections provides details on all the available options for all Magna-Power Electronics
Programmable DC Power Supply products. Note that not all options may be available for the XR
Series IV.
1.6.1. High Isolation Output (+ISO)
Certain applications require floating the output voltage to values beyond the power supply isolation
rating. Magna-Power Electronics High Isolation Output Option (+ISO) enables any TS Series, MS
Series, or MT Series model with a peak output voltage rating of 250 Vdc through 1000 Vdc to be
rated for a higher voltage output isolation. Improved isolation is achieved by a novel output stage with
improved controller isolation. In addition to being able to float the power supply to a higher output
9
Chapter 1. Product Information
voltage, this option also enables lower voltage units to be tied together in series up to the higher
isolation rating.
Table 1.7, “(+ISO) Option Isolation Specifications” provides the output isolation rating for all available
configurations, where Vo is the unit's rated maximum output voltage.
Table 1.7. (+ISO) Option Isolation Specifications
Product Isolation, models
1000 Vdc and below
SL Series 1000 Vdc N/A N/A
XR Series 1000 Vdc N/A N/A
TS Series 1000 Vdc ±(2000 Vdc + Vo/2) ±(2000 Vdc + Vo/2)
MS Series 1000 Vdc ±(2000 Vdc + Vo/2) ±(2000 Vdc + Vo/2)
MT Series 1000 Vdc 4000 Vdc 4000 Vdc
Isolation, models
1000 Vdc and below
with +ISO option
Isolation, models
above 1000 Vdc
1.6.2. High Slew Rate Output (+HS)
The high slew rate option solves several limitations inherent in switching power supply design.
Rapid voltage transitions require internal electronics to supply the energy to charge and discharge
output capacitors. Peak currents internal to the power supply define slew rate; utilizing less
capacitance enables voltage transitions in shorter time periods. Additionally, less capacitance reduces
requirements for discharge demands during open circuit conditions.
The standard output stage Magna-Power Electronics power supplies has been designed to provide
the lowest possible output ripple voltage within the constraints of available components, size, and cost.
Part of the output stage consists of a bank of aluminum electrolytic capacitors which has the desired
electrical properties to provide this function. These components require bleed resistors to discharge
any voltage when the power supply has no load and is disabled. While the presence of these
components and the resulting performance are normally industry accepted, there are applications
where lower output capacitance is extremely desirable and higher ripple voltage is acceptable. To
meet this need, a high-slew rate option is available which has an output stage consisting of low
capacitance film and aluminum electrolytic capacitors. Applications for the high-slew rate option
include battery charging, photovoltaic emulation, power waveform generation, and medium speed
power pulsing. These applications all benefit from higher bandwidth and in many cases, can tolerate
increased ripple voltage.
For photovoltaic emulation applications, higher bandwidth and lower output capacitance enable
improved performance with higher speed, maximum power tracker algorithms. Maximum power
tracker circuitry deviates the operating point of photovoltaic arrays to determine maximum power
output. Slow responding emulation sources can present a problem when the speed of the algorithm
exceeds that of the source. Furthermore, with lower output capacitance, changes in the operating
point and transients, caused by shorting the solar inverter input, produce lower unwanted input
currents.
The high-slew rate option enables the power supply to operate as a low frequency, power pulse
generator. With the special capacitors selected for this option, it is possible to superimpose waveforms
or produce a medium speed pulse on top of the dc output and expect normal capacitor life. It is
important to note that the power supply output is single quadrant; that is, the output voltage or current
cannot reverse.
The tables below define the High Slew Rate Output (+HS) option specifications.
10
Table 1.8. XR Series High Slew Rate Output Capacitance and Ripple
Output Voltage
Range (Vdc)
5 13200 500
10 4080 750
16 4080 750
20 2340 1000
32 2340 1500
40 240 1500
50 240 1750
80 240 1750
100 160 2000
125 160 2000
160 160 2500
200 160 2500
250 160 3000
Output Capacitance (uF) Output Ripple (mVrms)
High Slew Rate Output (+HS)
375 160 3000
400 160 3000
500 56 3000
600 56 3500
800 56 3500
1000 52 3500
Note:
1. For 20 to 30 kW models, multiply capacitance by 2
2. For 45 kW models, multiply capacitance by 3.
3. For 60 kW models, multiply capacitance by 4
4. For 75 kW models, multiply capacitance by 5
Table 1.9. TS Series and MS Series High Slew Rate Output Capacitance and Ripple
Output Voltage
Range (Vdc)
5 13200 750
8 9000 750
10 4080 750
Output Capacitance (uF) Output Ripple (mVrms)
16 4080 750
20 2340 1000
Note:
1. For 20 to 30 kW models, multiply capacitance by 2
2. For 45 kW models, multiply capacitance by 3.
3. For 60 kW models, multiply capacitance by 4
4. For 75 kW models, multiply capacitance by 5
11
Chapter 1. Product Information
Output Voltage
Range (Vdc)
32 1170 1000
40 750 3500
50 750 3500
80 300 4000
100 200 4000
125 200 4500
160 200 4500
200 200 5000
250 200 5000
375 160 5500
400 160 5500
500 70 5500
600 60 6000
800 56 6000
1000 52 6000
Output Capacitance (uF) Output Ripple (mVrms)
1500 18 6500
2000 18 6500
3000 9 7000
4000 9 7000
Note:
1. For 20 to 30 kW models, multiply capacitance by 2
2. For 45 kW models, multiply capacitance by 3.
3. For 60 kW models, multiply capacitance by 4
4. For 75 kW models, multiply capacitance by 5
Table 1.10. MT Series High Slew Rate Output Capacitance and Ripple
Output Voltage
Range (Vdc)
16 41000 1000
20 4100 1000
32 16000 1400
40 16000 1500
50 16000 1500
Output Capacitance (uF) Output Ripple (mVrms)
80 16000 1500
100 8000 1500
Note:
1. For 500 kW models, multiply capacitance by 2
2. For 750 kW models, multiply capacitance by 3
3. For 1000 kW models, multiply capacitance by 4
12
IEEE-488 GPIB Interface (+GPIB)
Output Voltage
Range (Vdc)
125 8000 1500
160 8000 1500
200 3650 1750
250 3650 1750
375 1450 2000
400 1450 2000
500 1450 2000
600 1450 2000
800 1280 2000
1000 1280 2000
1250 320 3500
1500 320 3500
2000 320 3500
3000 160 4000
4000 160 4000
Output Capacitance (uF) Output Ripple (mVrms)
Note:
1. For 500 kW models, multiply capacitance by 2
2. For 750 kW models, multiply capacitance by 3
3. For 1000 kW models, multiply capacitance by 4
1.6.3. IEEE-488 GPIB Interface (+GPIB)
The IEEE-488 GPIB interface, sometimes called the General Purpose Interface Bus (GPIB), is a
general purpose digital interface system that can be used to transfer data between two or more
devices. It is particularly well-uited for interconnecting computers and instruments. Some of its key
features are:
• Up to 15 devices may be connected to one bus
• Total bus length may be up to 20 m and the distance between devices may be up to 2 m
• Communication is digital (as opposed to analog) and messages are sent one byte (8 bits) at a time
• Message transactions are hardware handshaked
• Data rates may be up to 1 Mbyte/sec
1.6.4. LXI TCP/IP Ethernet Interface (+LXI)
Certified to the LXI Standard (Class C), the TCP/IP Ethernet option includes an embedded webserver, allowing web browser power supply control and monitoring from virtually anywhere. LXI is
an instrumentation platform based on industry standard Ethernet technology designed to provide
modularity, flexibility, and performance to small- and medium-sized systems.
LXI's advantages are exemplified in its compact, flexible package providing high-speed I/O and
reliable measurements. The Magna-Power Electronics LXI TCP/IP Ethernet option includes an
13
Chapter 1. Product Information
embedded web-server, allowing web browser power supply control and monitoring from virtually
anywhere.
1.6.5. UID47: Universal Interface Device (+UID)
Magna-Power Electronics UID47 is a general purpose device for connection to Magna-Power
Electronics power supplies. The device contains the necessary circuitry for configuring power supplies
for master/slave parallel or series operation.
Master/slave parallel operation allows two or more power supplies to equally share output current
when connected together. Master/slave series operation allows two or more power supplies to
equally share output voltage when connected together. In either operation mode, the master unit will
command the slave units to the proper voltage and current. Each unit will display its own individual
voltage and current. Installation requires setting jumpers, placing included 37-conductor cables
between the UID47 and power supplies, and wiring the power supply outputs in either parallel or
series.
The UID47 can be used as an interface for connecting control and monitoring lines to external circuitry.
It also contains an area on the printed circuit board for interconnecting wires and placing components
for specific user applications. The key features for the UID47 are as follows:
• Compatible with all Magna-Power Electronics power supplies
• Plug and play interface for series and parallel master/slave operation
• User configurable screw terminal connector
• Pad area for custom circuitry
• (2) 6-foot 37-pin cables included
1.6.6. USB Edgeport (+USB)
Edgeport USB-to-serial converters offer instant I/O expansion for peripheral device connectivity. An
out-of-the-box (external) alternative to PCI cards, Edgeport makes it easy to add serial port to a PC,
server or thin client in minutes without opening the chassis, reconfiguring or rebooting the system.
The USB Edgeport device plugs directly into the back of the power supply, creating a seamless USB
interface. Feature-rich design, reliability and unmatched operating system support make Edgeport
USB-to-serial converters ideal for mission-critical enterprise applications. An USB cable is included
along with associated drivers on the Magna-Power Electronics software CD.
1.6.7. Water Cooling (+WC)
Water cooling is available for Magna-Power Electronics TS Series and MS Series power supplies. This
option is typically used in corrosive environments, such as electroplating applications or in densely
packaged system cabinets, where heat removal by air cooling presents a problem.
Water cooling is implemented with chill plates and an integrated central heat exchanger. The chill
plates provides a thermal conduction path for heat sensitive components and the central heat
exchanger removes heat from air internal to the enclosure. Water cooled TS Series models have
enclosures without vent holes and are basically sealed the unit from the environment. An internal
solenoid valve enables water flow when the chill plate reaches 60 degrees celcius. Operation of the
solenoid prevents internal condensation.
5 kW to 15 kW models have a 1/4" NPT male inlet and outlet for water flow. Models greater than 15
kW have a 1/2" NPT male inlet and outlet for water flow with external plumbing that interconnects
14
Water Cooling (+WC)
power supply modules. A minimum of 2.50" is recommended behind the enclosure for this hardware
and user connections. For systems requiring more than one power supply, plumbing connections must
be paralleled; that is, water should not flow from one power supply into another.
15
16
Chapter 2.
Installation
2.1. Product Inspection
Carefully unpack the power supply saving all packing materials and included enclosures. Inspect
power supply for possible shipping damage. Check that there are no broken knobs or connectors, the
external surface is not scratched or dented, the meter faces are not damaged, and all controls move
freely. Any external damage may be an indication of internal damage.
The following parts are included with all models:
• XR Series IV programmable DC power supply
• RS232 cable
• Rear metal cover with required fastening hardware
• Coaxial high voltage cable (models above 1000 Vdc only)
• Printed XR Series IV User Manual
• CD with software, drivers, and digital documentation
• Calibration certificate with declaration of conformity
2.2. Rack Installation and Cooling
XR Series IV power supplies are intended for rack mount installations only and are designed to fit
in standard 19" equipment racks. Additional support, other than that provided by the front panel, is
required. Angle slides or cross beam supports securely fastened to the rack are recommended for
supporting the weight of the power supply. The unit should be horizontally mounted.
Caution: The power supply is too heavy for one person to safely lift and mount. To
avoid injury, ask a co-worker for assistance.
Each programmable DC power supply is cooled by suitable fans exhausting warm air to the rear of the
cabinet. Fresh air intake is from the sides of the cabinet allowing two or more XR Series IV supplies
to be stacked. Equipment racks should be equipped with fans or blowers to remove heat generated
by the power supplies. The manufacturer recommends fresh air intake at the bottom of the cabinet
and exhaust at the top. Cabinet fans and blowers should be rated at 300 CFM for each XR Series IV
supply.
Caution: Blocking ventilation will cause the power supply to overheat.
2.3. AC Input Connections
Caution: Disconnect AC power from the mains before attempting any installation
procedure.
Grounding: A safety ground wire must be connected to the unit as indicated by the
protective ground symbol at the rear of the power supply.
17
Chapter 2. Installation
AC power is wired to the power supply by attaching three cables plus ground for 3-phase installations
and two cables and ground for single phase installations. The manufacture recommends cables,
as specified in Table 2.1, “Suggested Ampacities of Conductors as Recommended by the National
Electrical Code” or Table 2.2, “Suggested Ampacities of 4-Conductor Type S or SO Cable”, be
crimped to ring terminals and securely fastened to the studs at the rear of the power supply. After
connections are made, screw the four standoffs into the back panel and place the protective shield
over the connections. This power supply is designed to be permanently connected to the power
source requiring a readily accessible disconnect device incorporated into the fixed wiring.
Table 2.1. Suggested Ampacities of Conductors as Recommended by the National Electrical Code
Temprature Rating of Copper Conductor
60 °C 75 °C 85 °C 90 °C
Types Types Types Types
Wire Size (AWG) RUW, T, TW FEPW, RH, RH,
RUH, THW,
THWN, XHHW,
ZW
14 25 30 30 35
12 30 35 40 40
10 40 50 55 55
8 60 70 75 80
6 80 95 100 105
4 105 125 135 140
3 120 145 160 165
2 140 170 185 190
1 165 195 215 220
1/0 195 230 250 260
2/0 225 265 290 300
3/0 260 310 335 350
4/0 300 360 390 405
250 MCM 340 405 440 455
V, MI TA, TBS, SA,
AVB, SIS, FEP,
FEPB, RHH,
THHN, XHHW
300 MCM 375 445 485 505
350 MCM 420 505 550 570
Table 2.2. Suggested Ampacities of 4-Conductor Type S or SO Cable
Wire Size (AWG) Maximum Current (A)
18 7
16 10
14 15
12 20
10 25
8 35
6 45
4 60
18
DC Output Connections
Wire Size (AWG) Maximum Current (A)
2 80
2.4. DC Output Connections
Caution: Disconnect AC power from the mains before attempting any installation
procedure.
2.4.1. DC Output Configuration for Models 1000 Vdc and Below
DC power is wired to the power supply by attaching two cables to the output bus bars. Magna-Power
Electronics recommends cables, as specified in Table 2.1, “Suggested Ampacities of Conductors
as Recommended by the National Electrical Code” or Table 2.3, “Suggested Ampacities of Welding
Cable”, be crimped to ring terminals and securely fastened to bus bars using 3/8" bolts, washers, and
lock washers. The bus bars contain 3/8"-16 threaded inserts. After connections are made, screw the
four standoffs into the back panel and place the protective shield over the connections.
Caution: Make sure connections are tight to avoid overheating of the bus bars.
Table 2.3. Suggested Ampacities of Welding Cable
Wire Size (AWG) Maximum Current (A)
6 85
4 110
3 130
2 150
1 170
1/0 200
2/0 235
3/0 275
4/0 315
* 315+
* Contact factory for assistance
2.4.2. DC Output Configuration for Models Above 1000 Vdc
DC power is wired to the supply by connecting the provided high voltage coaxial output cable to
the supply's 83-1R output receptacle. The output cable should be securely fastened to the supply's
receptable by turning the cable's PL-259 connector clockwise on this output receptacle. The other
end of the cable should be securely fastened to the load. After connections are made, screw the four
standoffs into the back panel and place the protective shield over the connections.
2.4.3. Remote Voltage Sensing
Remote sensing, a feature present on models 1000 Vdc and below, is used to improve the
degradation of regulation which will occur at the load when the voltage drop in the connecting wires
19
Chapter 2. Installation
is appreciable. Compensation is achieved by configuring the power supply for remote sensing as
described in Figure 3.4, “Enable or disable remote sense functionality”. Using a pair of #20 AWG
wires, connect terminal 2 of JS2 to the positive terminal of the load and connect terminal 1 of JS2 to
the negative terminal of the load. Table 2.4, “Remote Sense (JS2) Terminal Definition” defines the
remote sensing pins and Figure 2.1, “(a) Local and (b) remote sensing” illustrates standard output
sensing and remote output sensing. Both remote sense terminals are 6-32 screw connections.
Table 2.4. Remote Sense (JS2) Terminal Definition
Pin Definition
1 VO1REM-
2 VO1REM+
Caution: Switching remote sense leads or disconnecting remote sense leads while the
output is enabled can cause device failure. Only switch or disconnect remote sense
leads while the power supply is in standby or turned off.
Enabling remote sense activates the remote sense lead detector. The remote sense lead detector
checks that the remote sense leads have been connected to the load. With the power supply
configured for remote sensing and upon enabling power output, the sense location is initially set to
local. The sense location is switched to remote upon reaching 7.5% of full scale output voltage. If the
voltage detected is greater than 4.5% of full scale output voltage, the sense location remains remote; if
the output voltage detected is less than 4.5%, then the sense location will automatically revert back to
local.
The remote sense indicator on the front panel will flash when the remote sense functionality has been
enabled, but the power supply is remaining in local sense. The power supply will remain in local sense
with the REM SEN light flashing if the output voltage never exceeds 7.5% of full scale output voltage
or the remote sense lead detector has determined sense leads are not connected. The remote sense
indicator will remain flashing until the remote sense detector has detected the presence of remote
sense voltage within the limits described above.
20
Electrical Check
(b)
VO1REM-
VO1REM+
VS-
VS+
(a)
1
2
JS2
LOAD
VO-
VO+
MULTIPLEXER
MULTIPLEXER
VO+
VO-
LOAD
JS2
2
1
VS+
VS-
VO1REM+
VO1REM-
Figure 2.1. (a) Local and (b) remote sensing
2.5. Electrical Check
This section describes the electrical checkout procedure for the XR Series IV. For XR Series IV units
purchased with the standard XR Version front panel, refer to Section 2.5.1, “Electrical Check for
Models with XR Version Front Panel”. For XR Series IV purchased with the C Version front panel, refer
to Section 2.5.2, “Electrical Check for Models with C Version Front Panel”.
2.5.1. Electrical Check for Models with XR Version Front Panel
With the power supply off, disconnect the load, set voltage and current potentiometer controls fully
counterclockwise, and set the over voltage trip and over current trip settings to maximum. Connect
the power supply to a suitable source of AC voltage. For this test, only 50% of rated AC current is
required. Turn the power switch on and observe the indicator lights going through the startup routine.
After initialization, the following indicator lights should be on: STANDBY, INT CTL, EXT CTL, and
ROTARY. This is the default configuration from the factory. It is recommended that the following brief
electrical check be made shortly after unpacking the supply.
Press the start switch and advance the current control one turn clockwise. The power and voltage
control indicators should light. Increase the voltage set point to maximum and then to minimum. DC
voltage should increase smoothly from minimum to maximum to minimum as indicated on the meter.
Return the voltage control full counterclockwise. Press the stop switch.
To check over voltage trip, press the menu key. This places the power supply in data entry mode to set
over voltage trip. Using the up/down arrow keys, enter an over voltage trip set point at half the rating
of the power supply. Once the over voltage trip set point has been entered, press the enter key to save
the information.
Press the start switch and slowly increase the voltage set point. Over voltage trip should operate at the
over voltage trip set point. The over voltage trip (OVT) indicator should turn on, the power and voltage
21
Chapter 2. Installation
control indicators should turn off, and the supply should shut down. Press the clear key. Now set the
over voltage trip set point to maximum which is 110% the full scale rating of the power supply. Again
start the supply and observe that the power supply operates normally.
With the main power disconnected, connect a short to the power output terminals on the rear panel.
Reconnect the main power, set voltage and current controls full counterclockwise, and turn the power
switch on.
Press the start switch and advance the voltage control one turn clockwise. Increase the current set
point to maximum and then to minimum. The power and current control indicators should light. DC
current should increase smoothly from minimum to maximum to minimum as indicated on the meter.
Return the current control full counterclockwise. Press the stop switch.
To check over current trip, press the menu key and the item key one time. This places the power
supply in data entry mode to set over current trip. Using the up/down arrow keys, enter an over current
trip set point at half the rating of the power supply. Once the over current trip set point has been
entered, press the enter key to save the information.
Press the start switch and slowly increase the current set point. Over current trip should operate at the
over current trip set point. The over current trip (OCT) indicator should turn on, the power and current
control indicators should turn off, and the supply should shut down. Press the clear key. Now set the
over current trip set point to maximum which is 110% the full scale rating of the power supply. Again
start the supply and observe that the power supply operates normally.
If any of these events do not occur, the supply is defective and should not be operated. Depending on
the circumstances, either warranty service or trouble shooting is required.
2.5.2. Electrical Check for Models with C Version Front Panel
The electrical check for XR Series IV products with the C Version front panel models require use of
the Remote Interface Software described in Section 5.0. With the software installed and the power
supply connected to the desired communications interface, select XR Version in the Configuration
Setup Panel. Select the Virtual Control Panel in the View Menu to display the XR Version front panel.
Follow the procedure outlined in Section 2.5.1, “Electrical Check for Models with XR Version Front
Panel” using the Virtual Control Panel from within the Remote Interface Software.
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