APS CFS108 User manual

Operation Manual
CFS100 Series – Rev 1.3 P/N 160951-10
CFS100Series
ProgrammableAC&DCPower
Supply
–
ADAPTIVE Power Systems
Worldwide Supplier of Power Equipment
TM
Copyright  2016, Adaptive Power Systems, Inc. (APS) • All Rights Reserved • No reproduction without written authorization from APS.

CFS100 SERIES OPERATION MANUAL
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Table of Contents
1Contact Information ...................................................................................................................9
2Front Matter.............................................................................................................................10
2.1 Limited Warranty .................................................................................................................................. 10
2.2 Service and Spare Parts Limited Warranty .......................................................................................... 10
2.3 Safety Information................................................................................................................................. 10
2.4 Safety Notices ........................................................................................................................................ 12
3Product Overview.....................................................................................................................14
3.1 General Description............................................................................................................................... 14
3.1.1 Model CFS108................................................................................................................................................... 14
3.1.2 Model CFS116................................................................................................................................................... 14
3.1.3 Model CFS140................................................................................................................................................... 15
3.2 Product Features ................................................................................................................................... 15
3.3 Operating Modes .................................................................................................................................. 16
3.4 Voltage Programming ........................................................................................................................... 17
3.4.1 Minimum Voltage............................................................................................................................................. 17
3.4.2 Voltage Range AUTO mode ............................................................................................................................. 17
3.5 Current Protection Modes.................................................................................................................... 18
3.6 Voltage & Current Output Profiles ....................................................................................................... 19
3.6.1 CFS108 AC Mode VI Curve ............................................................................................................................... 20
3.6.2 CFS108 DC Mode VI Curve ............................................................................................................................... 21
3.6.3 CFS116 AC Mode VI Curve ............................................................................................................................... 22
3.6.4 CFS116 DC Mode VI Curve ............................................................................................................................... 23
3.6.5 CFS140 AC Mode VI Curve ............................................................................................................................... 24
3.6.6 CFS140 DC Mode VI Curve ............................................................................................................................... 25
4Technical Specifications ............................................................................................................26
4.1 AC Output .............................................................................................................................................. 26
4.2 DC Output .............................................................................................................................................. 27
4.3 Power Connections ............................................................................................................................... 27
4.4 Metering – AC Mode............................................................................................................................. 28
4.5 Metering – DC Mode............................................................................................................................. 29
4.6 Protection Modes.................................................................................................................................. 29
4.7 AC Input ................................................................................................................................................. 30
4.7.1 AC Input Current vs AC Output Current – Model CFS108 .............................................................................. 30
4.7.2 AC Input Current vs AC Output Current – Model CFS116 .............................................................................. 31
4.7.3 AC Input Current vs AC Output Current – Model CFS140 .............................................................................. 31
4.8 System Parameters ............................................................................................................................... 32
4.9 Test Mode Parameters.......................................................................................................................... 32
4.10 Interface and I/O ................................................................................................................................... 33
4.11 Dimensions & Weight ........................................................................................................................... 33
4.12 Environmental ....................................................................................................................................... 33
4.13 Safety & Regulatory............................................................................................................................... 33
5Unpacking and Installation .......................................................................................................34
5.1 Inspection .............................................................................................................................................. 34
5.2 Proper Lifting and Handling Guidelines................................................................................................ 34
5.2.1 Unpacking CFS108 and CFS116 Models .......................................................................................................... 35
5.2.2 Unpacking CFS140 Models............................................................................................................................... 36

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5.3 Ship Kits.................................................................................................................................................. 38
5.3.1 CFS108 Ship Kit Contents ................................................................................................................................. 38
5.3.2 CFS116 Ship Kit Contents ................................................................................................................................. 39
5.3.3 CFS140 Ship Kit Contents ................................................................................................................................. 40
5.4 AC Input Connections............................................................................................................................ 41
5.5 Grounding Requirements ..................................................................................................................... 41
5.6 Check Line Voltage ................................................................................................................................ 42
5.6.1 US Line Cord Requirements ............................................................................................................................. 42
5.6.2 European Line Cord Requirements.................................................................................................................. 42
5.6.3 CFS108 Models ................................................................................................................................................. 43
5.6.4 CFS116 & CFS140 Models ................................................................................................................................ 43
5.6.5 CFS140 AC Input Fuses & Circuit Breaker........................................................................................................ 44
5.7 Cleaning.................................................................................................................................................. 44
5.8 Powering Up .......................................................................................................................................... 45
5.9 In Case of Malfunction .......................................................................................................................... 45
5.10 Output Terminals .................................................................................................................................. 46
5.10.1 Model CFS108 Output Terminal Location....................................................................................................... 46
5.10.2 Model CFS116 Output Terminal Location....................................................................................................... 46
5.10.3 Model CFS140 Output Terminal Location....................................................................................................... 47
5.10.4 Recommended Output Wire Size.................................................................................................................... 48
5.10.5 Connecting a UUT............................................................................................................................................. 48
5.11 Rear Panel Controls and Connectors.................................................................................................... 49
5.11.1 CFS108 Rear Panel Overview........................................................................................................................... 49
5.11.2 CFS116 Rear Panel Overview ........................................................................................................................... 50
5.11.3 CFS140 Rear Panel Overview ........................................................................................................................... 51
5.11.1 REMOTE OUTPUT Connecter........................................................................................................................... 52
5.12 Remote Control Programming Interfaces............................................................................................ 53
5.12.1 RS232 Serial Interface....................................................................................................................................... 53
5.12.2 USB Interface .................................................................................................................................................... 54
5.12.3 LAN Interface (Option) ..................................................................................................................................... 54
5.12.4 GPIB Interface (Special Order) ......................................................................................................................... 54
5.12.5 Control Commands........................................................................................................................................... 55
5.12.6 Sending Commands over RS232 / USB or LAN ............................................................................................... 56
5.12.7 Receiving Commands over RS232 / USB or LAN............................................................................................. 56
6Front Panel Operation ..............................................................................................................57
6.1 Powering On .......................................................................................................................................... 57
6.2 Front Panel Layout ................................................................................................................................ 57
6.3 LED Status Indications ........................................................................................................................... 59
6.4 Shuttle Knob .......................................................................................................................................... 59
6.5 Setup Screen Readouts......................................................................................................................... 60
6.6 Main Menu Soft Keys............................................................................................................................ 61
6.7 Lower Level Menu Soft Keys................................................................................................................. 62
6.8 Password Protection ............................................................................................................................. 63
6.8.1 Password Assignment or Change .................................................................................................................... 63
6.8.2 Forgotten Password ......................................................................................................................................... 63
6.9 Operating Mode – Selecting ................................................................................................................. 64
6.9.1 Available Operating Modes.............................................................................................................................. 64
6.9.2 On Screen Operating Mode Indication............................................................................................................ 64
6.10 PROGRAM Mode Operation................................................................................................................. 66
6.10.1 PROGRAM Mode System Settings................................................................................................................... 66
6.10.2 Auto Run Mode Selections............................................................................................................................... 67

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6.10.3 Single Step Modes ............................................................................................................................................ 67
6.10.4 Alarm Settings................................................................................................................................................... 68
6.10.5 LCD Contrast ..................................................................................................................................................... 68
6.10.6 Power-Up Settings............................................................................................................................................ 69
6.10.7 Loop Cycle Settings........................................................................................................................................... 70
6.10.8 Results Display Mode Settings......................................................................................................................... 70
6.10.9 Over Current Fold Mode Settings .................................................................................................................... 71
6.10.10 Keyboard Lock Mode Settings ......................................................................................................................... 71
6.10.11 Memory Lock Mode Settings........................................................................................................................... 72
6.11 PROGRAM MODE - Using Memories and Steps.................................................................................. 73
6.11.1 Selecting a Memory Location .......................................................................................................................... 73
6.11.2 Assigning a Name to a Memory Location ....................................................................................................... 74
6.11.3 Selecting a Program Step ................................................................................................................................. 75
6.11.4 Program Step Parameters Available................................................................................................................ 76
6.11.5 Editing Step Parameters................................................................................................................................... 78
6.12 PROGRAM Mode - Step Parameter Details ......................................................................................... 79
6.12.1 Phase Angles ..................................................................................................................................................... 79
6.12.2 Memory Cycles ................................................................................................................................................. 80
6.12.3 Voltage Programming ...................................................................................................................................... 80
6.12.4 Frequency Programming.................................................................................................................................. 81
6.12.5 Measurement Limits Programming ................................................................................................................ 82
6.12.6 Time Duration Programming ........................................................................................................................... 83
6.12.7 Surge/Drop Programming................................................................................................................................ 84
6.12.8 User Prompt Programming.............................................................................................................................. 87
6.12.9 Step Cycle Programming .................................................................................................................................. 88
6.12.10 Connect Mode Programming .......................................................................................................................... 88
6.12.11 Reviewing Test Results ..................................................................................................................................... 89
6.13 PROGRAM Mode Execution ................................................................................................................. 90
6.13.1 Initiating a Test.................................................................................................................................................. 90
6.13.2 Monitoring Test Execution............................................................................................................................... 90
6.13.3 Cycle Display Mode .......................................................................................................................................... 91
6.13.4 Operator Interruption and Voltage Adjust...................................................................................................... 91
6.13.5 Triggering a Voltage Surge/Sag........................................................................................................................ 92
6.13.6 End of Test Status ............................................................................................................................................. 93
6.14 MANUAL (AC) Mode Operation ........................................................................................................... 94
6.14.1 Available Parameters in MANUAL Mode........................................................................................................ 94
6.14.2 Programming MANUAL mode parameters .................................................................................................... 94
6.15 MANUAL (AC) Mode Execution ............................................................................................................ 95
6.16 DC Mode Operation.............................................................................................................................. 97
6.16.1 Available Parameters in DC Mode................................................................................................................... 97
6.16.2 Programming DC mode parameters ............................................................................................................... 97
6.17 DC Mode Execution............................................................................................................................... 98
7Remote Control Programming..................................................................................................99
7.1 Overview................................................................................................................................................ 99
7.2 Command Syntax .................................................................................................................................. 99
7.2.1 Command Terminators.................................................................................................................................... 99
7.2.2 Numeric Parameters ........................................................................................................................................ 99
7.2.3 Parameter Unit Options ................................................................................................................................... 99
7.3 Syntax Notation Convention............................................................................................................... 100
7.4 Test Control Command and Query Syntax ........................................................................................ 101
7.5 Parameter Setup Command and Query Syntax ................................................................................ 104
7.6 System Command and Query Syntax................................................................................................. 106

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7.7 IEEE488.2 Common Commands......................................................................................................... 108
7.7.1 Command Commands Summary Table ........................................................................................................ 108
7.7.2 *IDN?...............................................................................................................................................................109
7.7.3 *RST.................................................................................................................................................................109
7.7.4 *TST? ............................................................................................................................................................... 109
7.7.5 *CLS .................................................................................................................................................................109
7.7.6 *OPC / *OPC? ................................................................................................................................................. 109
7.7.7 *WAI................................................................................................................................................................109
7.7.8 *ESR?...............................................................................................................................................................110
7.7.9 *ESE <value> / *ESE?...................................................................................................................................... 110
7.7.10 *STB?...............................................................................................................................................................110
7.7.11 *SRE <value> / *SRE? ..................................................................................................................................... 110
7.7.12 *PSC {1|0} / *PSC?.......................................................................................................................................... 110
8USB Driver Installation............................................................................................................111
8.1 Overview.............................................................................................................................................. 111
8.2 USB Driver Installation ........................................................................................................................ 111
9LAN Interface Configuration ...................................................................................................116
9.1 Overview.............................................................................................................................................. 116
9.2 Collect Network Information.............................................................................................................. 116
9.3 Saving LAN Settings ............................................................................................................................. 116
9.4 LAN Option Setup Menu..................................................................................................................... 118
9.4.1 IP Setup Mode ................................................................................................................................................ 118
9.4.2 Manual IP Address Setting ............................................................................................................................. 119
9.4.3 Gateway Address Setting ...............................................................................................................................119
9.4.4 Subnet Mask Setting....................................................................................................................................... 120
9.4.5 Device Name Setting ...................................................................................................................................... 120
9.4.6 MAC Address .................................................................................................................................................. 121
9.5 Establishing LAN connection using NI MAX Explorer ........................................................................ 122
9.6 LAN Interface Specific Commands and Queries ................................................................................ 131
9.6.1 Communication Considerations .................................................................................................................... 131
9.6.2 Ethernet Setting Commands Wait Times...................................................................................................... 132
10 Calibration ..............................................................................................................................133
10.1 Overview.............................................................................................................................................. 133
10.2 Hardware Verification Procedure....................................................................................................... 133
10.2.1 Required Calibration Instruments and Standards ........................................................................................133
10.2.2 Hardware Verification Procedure Steps........................................................................................................ 133
10.3 Hardware Calibration Procedure........................................................................................................ 135
10.3.1 Required Calibration Instruments and Standards ........................................................................................135
10.3.2 Hardware Calibration Procedure................................................................................................................... 135
10.4 Software Calibration Procedure ......................................................................................................... 138
10.4.1 Required Calibration Instruments and Standards ........................................................................................138
10.4.2 Software Calibration Procedure .................................................................................................................... 138
10.4.3 Voltage: 150.0V Calibration ...........................................................................................................................139
10.4.4 Voltage: 300.0V Calibration ...........................................................................................................................140
10.4.5 High & Low Current Range Calibration.......................................................................................................... 140
10.4.6 High & Low Power Range Calibration............................................................................................................ 141
10.4.7 Peak Current Calibration ................................................................................................................................ 142
10.4.8 Exiting Calibration Mode................................................................................................................................142
11 CE MARK Declaration of Conformity.......................................................................................143
Index .............................................................................................................................................134

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Table of Tables
Table 3-1: Available Voltage Ranges by Output Mode.........................................................................................17
Table 5-1: CFS108 Included Accessories Ship Kit..................................................................................................38
Table 5-2: CFS116Included Accessories Ship Kit...................................................................................................39
Table 5-3: CFS140 Included Accessories Ship Kit..................................................................................................40
Table 5-4: AC Input Voltage Identification Location CFS116 ................................................................................43
Table 5-5: Recommend Output Wire Sizes by model...........................................................................................48
Table 5-6: CFS108 Rear Panel Callouts .................................................................................................................50
Table 5-7: CFS116 Rear Panel Callouts .................................................................................................................50
Table 5-8: CFS140 Rear Panel Callouts .................................................................................................................51
Table 5-9: REMOTE OUTPUT CONNECTOR Pins ...................................................................................................52
Table 5-10: RS232 DB9 Pin Assignments ..............................................................................................................53
Table 5-11: Serial Cable to PC COM port..............................................................................................................53
Table 5-12: IEEE-488 Connector Pin Assignments................................................................................................55
Table 6-1: Front Panel Status LED Indications ......................................................................................................59
Table 6-2: Setup (Set) Screen Display Fields Description .....................................................................................60
Table 6-3: Available Top Level Menus ..................................................................................................................61
Table 6-4: Available Soft Key Labels .....................................................................................................................62
Table 6-5: PROGRAM Mode Step Parameters Available ......................................................................................78
Table 6-6: Programmable Step Time Parameters.................................................................................................83
Table 6-7: Programmed Voltage Drop Example Settings .....................................................................................85
Table 7-1: Test Control Command and Query Summary....................................................................................101
Table 7-2: Parameter Setup Command and Query Summary ............................................................................106
Table 7-3: IEEE488.2 Common Commands Supported.......................................................................................109
Table 9-1: LAN Option Interface specific Commands.........................................................................................131
Table 9-2: LAN Option Interface Command Wait Times ....................................................................................132

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Table of Figures
Figure 3-1:CFS108-AC-VI_Curve-150V_Range ......................................................................................................20
Figure 3-2: CFS108-AC-VI_Curve-300V_Range .....................................................................................................20
Figure 3-3:CFS108-DC-VI_Curve-200V_Range......................................................................................................21
Figure 3-4: CFS108-DC-VI_Curve-400V_Range.....................................................................................................21
Figure 3-5:CFS116-AC-VI_Curve-150V_Range......................................................................................................22
Figure 3-6: CFS116-AC-VI_Curve-300V_Range .....................................................................................................22
Figure 3-7:CFS116-DC-VI_Curve-200V_Range......................................................................................................23
Figure 3-8: CFS116-DC-VI_Curve-400V_Range.....................................................................................................23
Figure 3-9:CFS140-AC-VI_Curve-150V_Range......................................................................................................24
Figure 3-10: CFS140-AC-VI_Curve-300V_Range ...................................................................................................24
Figure 3-11:CFS140-DC-VI_Curve-200V_Range....................................................................................................25
Figure 3-12: CFS140-DC-VI_Curve-400V_Range...................................................................................................25
Figure 4-1: AC Input Current vs AC Output Current – Model CFS108 ..................................................................30
Figure 4-2: AC Input Current vs AC Output Current – Model CFS116 ..................................................................31
Figure 4-3: AC Input Current vs AC Output Current – Model CFS140 ..................................................................31
Figure 4-1: Model 5L18-36 VI Curve .....................................................................................................................34
Figure 5-2: Lifting Do's and Don'ts Chart..............................................................................................................35
Figure 5-3: CFS108 Ship Kit Content .....................................................................................................................38
Figure 5-4: CFS116 Ship Kit Content .....................................................................................................................39
Figure 5-5: CFS140 Ship Kit Content .....................................................................................................................40
Figure 5-6: AC Input Voltage Selector Switch Location CFS108............................................................................43
Figure 5-7: CFS140 AC Input Circuit Breaker Location..........................................................................................44
Figure 5-8: CFS108 Output Terminals...................................................................................................................46
Figure 5-9: CFS116 Output Terminals...................................................................................................................46
Figure 5-10: CFS140 Output Terminals.................................................................................................................47
Figure 5-11: CFS108 Rear Panel Callouts..............................................................................................................49
Figure 5-12: CFS116 Rear Panel Callouts ..............................................................................................................50
Figure 5-13: CFS140 Rear Panel Callouts..............................................................................................................51
Figure 5-14: RS232 Connector ..............................................................................................................................53
Figure 5-15: LAN Option Connectors....................................................................................................................54
Figure 5-16: Effect of Current Slew Rate Settings on Power Supply Testing........................................................54
Figure 6-1: CFS100 Series Front Panel Displays and Controls ..............................................................................57
Figure 6-2: PROGRAM MODE LCD indicator.........................................................................................................64
Figure 6-3: MANUAL MODE LCD indicator ...........................................................................................................65
Figure 6-4: DC MODE LCD Indicator .....................................................................................................................65
Figure 6-5: Step Time Parameters Relationship ...................................................................................................83
Figure 6-6: Programmed Voltage Drop Example Waveform ................................................................................86
Figure 9-1: Network Information Required for LAN Setup.................................................................................116
Figure 10-1: DC Offset Measurement.................................................................................................................134
Figure 10-2: DC Offset Measurement.................................................................................................................136

CFS 100 SERIES OPERATION MANUAL
SECTION 1: CONTACT INFORMATION
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1 Contact Information
AMERICA/CANADA
Adaptive Power Systems
Irvine, USA
Phone: [phone]
Fax: [phone]
Email: [e-mail]
EUROPE
Caltest Instruments Ltd.
Guildford, United Kingdom
Phone: [phone]
Fax: [phone]
Email: [e-mail]
CHINA
PPST Shanghai Co. Ltd.
Shanghai, China
Phone: [phone]
Fax: [phone]
Email: [e-mail]
Web: http://www.adaptivepower.com

CFS100 SERIES OPERATION MANUAL
SECTION 2: FRONT MATTER
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2 Front Matter
2.1 Limited Warranty
Adaptive Power Systems, Inc. (APS) warrants each unit to be free from defects in material
and workmanship. For the period of one (1) years from the date of shipment to the
purchaser, APS will either repair or replace, at its sole discretion, any unit returned to the
APS factory in Irvine, California or one of its designated service facilities. It does not cover
damage arising from misuse of the unit or attempted field modifications or repairs. This
warranty specifically excludes damage to other equipment connected to this unit.
Upon notice from the purchaser within (30) days of shipment of units found to be defective
in material or workmanship, APS will pay all shipping charges for the repair or replacement.
If notice is received more than thirty (30) days from shipment, all shipping charges shall be
paid by the purchaser. Units returned on debit memos will not be accepted and will be
returned without repair.
This warranty is exclusive of all other warranties, expressed or implied.
2.2 Service and Spare Parts Limited Warranty
APS warrants repair work to be free from defects in material and workmanship for the
period of ninety (90) days from the invoice date. This Service and Spare Parts Limited
Warranty applies to replacement parts or to subassemblies only. All shipping and packaging
charges are the sole responsibility of the buyer. APS will not accept debit memos for
returned power sources or for subassemblies. Debit memos will cause return of power
sources or assemblies without repair.
This warranty is exclusive of all other warranties, expressed or implied.
2.3 Safety Information
This chapter contains important information you should read BEFORE attempting to install
and power-up APS Equipment. The information in this chapter is provided for use by
experienced operators. Experienced operators understand the necessity of becoming
familiar with, and then observing, life-critical safety and installation issues. Topics in this
chapter include:
• Safety Notices
• Warnings
• Cautions
• Preparation for Installation
• Installation Instructions
Make sure to familiarize yourself with the SAFETY SYMBOLS shown on the next page. These
symbols are used throughout this manual and relate to important safety information and
issues affecting the end user or operator.

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SAFETY SYMBOLS
Direct current (DC)
Alternating current (AC)
Both direct and alternating current
Three-phase alternating current
Off (Supply)
On (Supply)
Protective Earth (ground) terminal
Caution: Refer to this manual before this using Product.
Caution, risk of electric shock
Fuse

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2.4 Safety Notices
SAFETY SUMMARY
The following general safety precautions must be observed during all phases of operation,
service, and repair of this instrument. Failure to comply with these precautions or with
specific warnings elsewhere in this manual violates safety standards of design, manufacture,
and intended use of the instrument. Adaptive Power Systems assumes no liability for the
customer's failure to comply with these requirements.
GENERAL
This product is a Safety Class 1 instrument (provided with a protective earth terminal). The
protective features of this product may be impaired if it is used in a manner not specified in
the operation instructions.
ENVIRONMENTAL CONDITIONS
This instrument is intended for indoor use in an installation category I, pollution degree 2
environments. It is designed to operate at a maximum relative humidity of 80% and at
altitudes of up to 2000 meters / 6560 feet. Refer to the specifications tables for the ac mains
voltage requirements and ambient operating temperature range.
BEFORE APPLYING POWER
Verify that the product is set to match the available line voltage and the correct fuse is
installed.
GROUND THE INSTRUMENT
This product is a Safety Class 1 instrument (provided with a protective earth terminal). To
minimize shock hazard, the instrument chassis and cabinet must be connected to an
electrical ground. The instrument must be connected to the AC power source mains through
a properly rated power cord, with the ground wire firmly connected to an electrical ground
(safety ground) at the power outlet. Any interruption of the protective (grounding)
conductor or disconnection of the protective earth terminal will cause a potential shock
hazard that could result in personal injury.
FUSES
Only fuses with the required rated current, voltage, and specified type (normal blow, time
delay, etc.) should be used. Do not use repaired Fuses or short circuit the fuse holder. To do
so could cause a shock or fire hazard.
DO NOT OPERATE IN AN EXPLOSIVE ATMOSPHERE.
Do not operate the instrument in the presence of flammable gases or fumes.

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KEEP AWAY FROM LIVE CIRCUITS.
Operating personnel must not remove instrument covers. Component replacement and
internal adjustments must be made by qualified service personnel. Do not replace
components with power cable connected. Under certain conditions, dangerous voltages
may exist even with the power cable removed. To avoid injuries, always disconnect power,
discharge circuits and remove external voltage sources before touching components.
DO NOT SERVICE OR ADJUST ALONE.
Do not attempt internal service or adjustment unless another person, capable of rendering
first aid and resuscitation, is present.
DO NOT EXCEED INPUT RATINGS.
This instrument may be equipped with a line filter to reduce electromagnetic interference
and must be connected to a properly grounded receptacle to minimize electric shock
hazard. Operation at line voltages or frequencies in excess of those stated on the data plate
may cause leakage currents in excess of 5.0 mA peak.
DO NOT SUBSTITUTE PARTS OR MODIFY INSTRUMENT.
Because of the danger of introducing additional hazards, do not install substitute parts or
perform any unauthorized modification to the instrument. Return the instrument to an
Adaptive Power Systems Sales and Service Office for service and repair to ensure that safety
features are maintained.
Instruments that appear damaged or defective should be made inoperative and secured
against unintended operation until they can be repaired by qualified service personnel.

CFS100 SERIES OPERATION MANUAL
SECTION 3: PRODUCT OVERVIEW
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3 Product Overview
This chapter provides an overview of the APS CFS100 Series programmable, AC and DC
power sources. It introduces the reader to general operating characteristics of these power
sources. Operational information and menu navigation details are provided in Section 6,
“Front Panel Operation”.
3.1 General Description
The APS CFS100 Series consists of three models at varying output power levels. Each model
has similar electrical performance and operational characteristics except for maximum AC
input currents, AC and DC output currents and AC input voltage requirements. Refer to
Section 4, “Technical Specifications” for specific AC input specifications by model.
3.1.1 Model CFS108
This is the smallest model offered at 800VA output in AC mode and 400W output in DC
mode. Output voltage is 300Vac in AC mode or 400Vdc in DC mode. The CFS108 connects
the AC power grid using a standard IEC 60320 standard type C13 (15 A) modular line cord.
One line cord is included in the shipkit. If the plug is not correct for your locale, country
specific line cords should be readily available or the plug on the included line cord can be
replaced with the correct plug.AC input can be changed between 115V and 230V using the
voltage input selector switch on the rear panel of the unit.
3.1.2 Model CFS116
This CFS116 offers 1600VA output in AC mode and 800W output in DC mode. It is similar in
height and width to the CFS108 but somewhat deeper (and heavier) so the CFS116 requires
more depth than the CFS108 when installed in a 19” cabinet.
Output voltage is 300Vac in AC mode or 400Vdc in DC mode. The CFS116 connects the AC
power grid using a standard IEC 60320 standard type C19 (20 A) modular line cord. If the
plug is not correct for your locale, a country specific line cords can be used instead or the
plug on the included line cord can be replaced with the correct plug

DPS SERIES OPERATION MANUAL
SECTION 3: PRODUCT OVERVIEW
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3.1.3 Model CFS140
This CFS140 offers 4000VA output in AC mode and 2000W output in DC mode. It is similar in
width to the CFS108 and CFS140 but much taller and heavier. A rack handle kit for
installation in a 19” cabinet is included but additional L-bracket support is required to install
into a cabinet due to the unit’s weight.
The CFS140 requires too much AC input current to use a modular power cord. Instead, it is
equipped with an AC line disconnect circuit breaker and an AC input terminal strip. Both are
located on the rear panel. Refer to Section 5, “Unpacking and Installation”
3.2 Product Features
The following key characteristics apply to all CFS100 Series models;
• Fully programmable AC and DC output modes
• Frequency range in AC mode is 40 Hz to 500 Hz
• Dual voltage ranges in both modes
• AC voltage ranges are 5-150Vac and 5-300Vac RMS
• DC voltage ranges are 5-200Vdc and 5-400Vdc.
• Programmable Current limit with Fold-Back (CC) and Shutoff Modes (CV)
• Full complement of output parameter metering:
o Frequency
o Volt AC or DC
o Current AC or DC
o AC Peak Current
o Current Crest Factor
o True Power
o Apparent Power
o Power Factor
• Over voltage, over current, over power and over temperature protection
• Fan Cooled
• USB and RS232 remote control interfaces
• Remote Interlock

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3.3 Operating Modes
The CFS100 Series offers three modes of operation that are user selectable through the
System soft key.
Mode
Description
Output Mode
PROGRAM
Go/No Go Limit testing for AC powered product. This
mode uses one of 50 Memories that store up to nine
test steps each. Each test step will apply user set output
frequency, voltage and current limit to the unit under
test. Duration of each test step is set by the user for
each step. During each step, measurements are taken
and compared against user set pass/fail limits. Any
measurement that falls outside one or more limits
results in a FAIL.
AC
MANUAL
MANUAL mode provides interactive operation in AC
mode. In this mode, frequency, voltage and current limit
can be set. After applying power to the unit under test,
all measurements are shown in the Measurement
display. Two measurements – one of which is always
VOLTAGE - are shown in large font so they can be read
from a distance. The other measurements are shown in
smaller font in the top portion of the LCD display. The
‘Meter” soft key allows the user to toggle the second
large readout between the other available
measurements. While in measurement display mode,
the shuttle can be used to adjust either voltage or
frequency.
AC
DC
DC Mode is the same as MANUAL mode, but provides
DC output mode instead. Measurements in DC mode
are limited to Voltage DC (Volts), Current DC (Amps) and
True Power (Watt)
DC

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3.4 Voltage Programming
Voltage settings are similar between PROGRAM, MANAUL and DC modes. Two voltage
ranges are available, a LOW (AUTO) range and a HIGH range. Low range is always half the
maximum available voltage on the HIGH range. Maximum current in the LOW (AUTO) range
is two times that of the HIGH Range. The HIGH range allows the maximum voltage to be
programmed.
Range values are different for AC and DC modes as follows:
Mode
LOW RANGE (AUTO)
HIGH RANGE
PROGRAM or MANUAL
5 Vac – 150 Vac RMS
5 Vac – 300 Vac RMS
DC
5 Vdc – 200 Vdc
5 Vdc – 400 Vdc
Table 3-1: Available Voltage Ranges by Output Mode
See specifications in Sections 4.1and 4.2 for each mode.
3.4.1 Minimum Voltage
Programming resolution is 0.1V in all modes and on all voltage ranges. Notethat values
below 5Vac or 5Vdc can be programmed. However, at voltage settings lower than 5V, load
regulation and voltage distortion (AC mode) are difficult to maintain.
3.4.2 Voltage Range AUTO mode
The CFS will auto range when set to the AUTO (LOW) VOLTAGE range so values over 150Vac
or 200Vdc will cause the power source to switch to HIGH range automatically. When set to
HIGH Voltage Range, the power source will remain on the high voltage range at all times,
regardless of programmed voltage.
Note: If set to AUTO Range, the power source will switch from LOW range to HIGH range
when a set value of 150V in AC mode or 200V in DC mode or higher is programmed,
either in MANUAL mode or as part of a program memory step in PROGRAM mode.

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3.5 Current Protection Modes
Current protection is an important feature on programmable power sources as it allows
protection of the unit under test against damage caused by over current conditions. The
default setting for current limit is the maximum supported value for the voltage range
selected. However, it should be set to a value appropriate for protecting the unit under
test, before applying power. Current limit set values are in Aac RMS for PROGRAM and
MANUAL modes and Adc for DC mode.
Current protection mode is available using one of two modes of operation:
Current Fold-Back: In this mode, load current is limited to the set current limit value by
reducing the output voltage. Thus, while in fold back mode, the
output voltage will be less than the programmed (set) voltage. As
the load impedance increases and thus the load current decreases,
the voltage will go up until the load current is at or below the
programmed current limit value and the voltage is at the set value.
Current Fault Mode: In this mode, the CFS100 will fault and open the output relay when
the load current exceeds the set current limit value for some period
of time. This time period depends on the amount of load current. At
current levels slightly above the set value, this time may be fairly
long. At load currents significantly higher than the set current level
– i.e. a short circuit condition - , this period will be very short.
The protection mode selection is available in the System setup menu under “OC Fold”.
Available settings are:
• OC Fold = ON Enables voltage fold back mode
• OC Fold = OFF Disables voltage fold back mode

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3.6 Voltage & Current Output Profiles
The CFS series provides higher load current at lower voltage as long as the total output
power is within its power band. This results in a constant power voltage/current profile as
shown in the following charts for each model and by output mode (AC or DC), and voltage
range (high (300Vac/400Vdc) or low (150Vac/200Vdc)).

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3.6.1 CFS108 AC Mode VI Curve
Figure 3-1:CFS108-AC-VI_Curve-150V_Range
Figure 3-2: CFS108-AC-VI_Curve-300V_Range