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APS FC205 Operation Manual

Fc200 series power converters
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Operations Manual
FC200-000-02.3
FC200 Series
Power Converters
Copyright  2014, Adaptive Power Systems, Inc. (APS) • All Rights Reserved • No reproduction without written authorization from APS.
Caltest Instruments GmbH
Kohlmattstrasse 7
D-77876 KAPPELRODECK
info@caltest.de
ADAPTIVE Power Systems
Tel: +49(0)7842-99722-00
Fax: +49(0)7842-99722-29
www.caltest.de
Worldwide Supplier of Power Equipment

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  • Page 1 Caltest Instruments GmbH Kohlmattstrasse 7 Tel: +49(0)7842-99722-00 D-77876 KAPPELRODECK Fax: +49(0)7842-99722-29 info@caltest.de www.caltest.de ADAPTIVE Power Systems Worldwide Supplier of Power Equipment Copyright  2014, Adaptive Power Systems, Inc. (APS) • All Rights Reserved • No reproduction without written authorization from APS.

  • Page 2: Table Of Contents

    CONTENTS Contents Front Matter Contents ....................... ii Contact Information ................v Warranty Information ................. vi CE Mark Declaration of Conformity ..........viii Chapter 1 Introduction Introduction....................1-1 Overview ................... 1-1 Safety Notices ................... 1-2 Preparation for Installation ............... 1-5 Installation Instructions ..............1-6 Example Wiring Diagram ..............
  • Page 3 CONTENTS Chapter 3 Unit Description Overview ....................3-1 Front Panel Organization ..............3-1 Frequency Display and Selection ........... 3-3 Voltage Display and Selection ............3-4 Current Display and Selection ............3-5 Power / PF Display and Selection ..........3-6 Cabinet Controls and Connections ..........3-7 Chassis Details ..................
  • Page 4 CONTENTS Chapter 6 System Calibration Overview ....................6-1 Calibration Setup ................6-2 Calibration Instructions ..............6-4 Low-Voltage Mode (V-LO) Calibration ........6-6 High-Voltage Mode (V-HI) Calibration ......... 6-7 Low-Current Mode (A-LO) Calibration ......... 6-8 High-Current Mode (A-HI) Calibration ........6-10 Low-Power Mode (P-LO) Calibration ..........

  • Page 5: Contact Information

    CONTACT INFORMATION Contact Information Adaptive Power Systems, Inc. 17711 Mitchell North Irvine, CA 92614 Telephone: (949) 752-8400 FAX: (949) 756-0838 E-mail: sales@adaptivepower.com Web: http://www.adaptivepower.com Entire Contents Copyright  2006 by Adaptive Power Systems, Inc. (APSI) • All Rights Reserved • No reproduction without written authorization from APSI. FC200 SERIES OPERATIONS MANUAL FC200-000-02.2...

  • Page 6: Warranty Information

    Adaptive Power Systems, Inc. (APS) warrants each unit to be free from defects in material and workmanship. For the period of one (1) year 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.

  • Page 7: Declaration Of Conformity

    WARRANTY INFORMATION DECLARATION OF CONFORMITY The manufacturer hereby declares that the product Product Name FC205, FC205P, FC210, FC210P Serial Number ___________ Conforms to the following standards or other normative documents: SAFETY: Standard applied IEC 61010 - 1: 2010 (3rd Edition)

  • Page 8: Chapter 1 Introduction

    CHAPTER 1 INTRODUCTION Chapter 1 Introduction Overview Chapter 1 contains important information you should read BEFORE attempting to install and power-up your FC200 Series Power Converter. 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.
  • Page 9 CHAPTER 1 INTRODUCTION Introduction to the FC200 Power Converter FC200 Series Power Converters have been designed for long-life trouble-free operation in the production floor or testing environment. The input to FC200 units is commercially available power at fixed voltage and frequency. The output from FC200 units is programmable power at user-controlled voltages and frequencies.

  • Page 10: Safety Notices

    CHAPTER 1 INTRODUCTION Safety Notices  Only experienced operators who have both read and understood the information in this manual should attempt to operate the unit.  The following warnings and cautions herein must be observed at all times. WARNINGS indicate potentially hazardous situations which, if not avoided, could result in death or serious injury.
  • Page 11 CHAPTER 1 INTRODUCTION WARNING ANY TIME the POWER/RESET LED on the front panel is lit, potentially lethal voltage may be present at the Frequency Converter’s Output Terminals. Entire Contents Copyright  2006 by Adaptive Power Systems, Inc. (APSI) • All Rights Reserved • No reproduction without written authorization from APSI. FC200 SERIES OPERATIONS MANUAL 1 - 4 FC200-000-02.2...
  • Page 12 CHAPTER 1 INTRODUCTION WARNING THIS EQUIPMENT CONTAINS HIGH ENERGY, LOW IMPEDANCE CIRCUITS!! LETHAL POTENTIALS ARE CONTAINED WITHIN THE CABINET. CARE MUST BE EXERCISED WHEN OPERATING, CALIBRATING, OR SERVICING THIS EQUIPMENT, IN ORDER TO PREVENT SERIOUS OPERATOR INJURY OR EQUIPMENT DAMAGE. OBSERVE THE FOLLOWING WHEN SERVICE AND MAINTENANCE ARE REQUIRED: 1) REMOVE ALL JEWELRY FROM ARMS AND NECK WHEN SERVICING THIS EQUIPMENT.
  • Page 13 CHAPTER 1 INTRODUCTION CAUTIONS indicate a potentially hazardous situation which, if not avoided, may result in minor or moderate injury. It also may be used to alert against unsafe practices. Cautions will appear as shown below. All cautions should be rigorously observed. CAUTION Read the INSTALLATION and OPERATION instructions of this manual before installing or operating this equipment.

  • Page 14: Preparation For Installation

    If the product has been damaged, please alert the freight company and contact APS or the distributor. Please keep the original box and packing to assist in determining how the damage occurred.

  • Page 15: Installation Instructions

    CHAPTER 1 INTRODUCTION Installation Instructions Input Connections FC200 Power Converter input connections are on the rear of the unit. Please check to make sure all wires are connected correctly and secured. Cooling fans, located at the rear of the unit, provide air circulation for cooling and heat removal. Please leave at least 6 to 8 inches of free space behind a unit to allow adequate airflow.

  • Page 16: Storage And Transportation

    Please retain all the original packing materials. If the equipment must be sent back for repair, use the original packing materials for packing. Please contact the APS repair center or factory before returning equipment. Be sure to send all accessories and indicate the symptoms and cause of failure if known.

  • Page 17: Chapter 2 Specifications

    CHAPTER 2 TECHNICAL SPECIFICATIONS Chapter 2 Specifications Overview Chapter 2 summarizes the capabilities and general features of the FC200 family of Power Converters. Functional capabilities are similar for all units. FC200 units convert fixed line voltage at a fixed frequency to user-selected 1-phase output voltages and frequencies.

  • Page 18: Fc200 Specifications

    CHAPTER 2 TECHNICAL SPECIFICATIONS FC200 Specifications The following five tables and surge current graph provide detailed information about the entire family of FC200 Series of power converters.  Input Electrical Specifications  Output Electrical Specifications  Displays and Controls  Mechanical Specifications ...

  • Page 19: Input Electrical Specifications

    CHAPTER 2 TECHNICAL SPECIFICATIONS Input Electrical Specifications Model FC205 FC210 Input Phase 1-phase / 2-wire + Ground Input Voltage 115/230Vac +/-15% Input Frequency 47 – 63 Hz Output Electrical Specifications 500VA 1000VA Total Power 0 – 150 V 4.2A 8.4A...

  • Page 20: Displays And Controls

    External PLC Interface option. PLC External Interface OUTPUT ON/OFF, Recall memory 1 through 7 optional Calibration Front Panel Calibration (see Chapter 6) Mechanical Specifications Model FC205 FC210 Power Rating 500VA 1000VA Dimensions mm (In.) 89 (3.504) 89 (3.504) 400 (15.748)

  • Page 21: Output Surge-Current Capability

    CHAPTER 2 TECHNICAL SPECIFICATIONS Output Surge-Current Capability Time (seconds) Output Surge-Current Rating Rated Short-Term Overload Current vs. Time Peak instantaneous current to approximately 400% of nominal AC RMS current is allowed. The actual operating time before thermal shutdown, or before the circuit breaker trips, will always vary.

  • Page 22: Chapter 3 Unit Description

    CHAPTER 3 UNIT DESCRIPTION Chapter 3 Unit Description Overview Chapter 3 helps you locate controls and understand their functions. More importantly, the names used throughout this manual to identify controls and functions are defined. You need to know the vocabulary of the FC200 Series to take full advantage of the information in this manual.
  • Page 23 CHAPTER 3 UNIT DESCRIPTION FC200 Front Panel Controls FREQUENCY VOLTAGE CURRENT POWER / PF 0-150V OUTPUT 50Hz 60Hz 0-300V LOCK SYSTEM RESET P O W E R / PF F R E Q U E N C Y 50Hz 60Hz C U R R E N T V O L T A G E 0-300...
  • Page 24 CHAPTER 3 UNIT DESCRIPTION F R E Q U E N C Y 50Hz 60Hz FC200 Frequency Display Frequency Selection FREQUENCY display Displays the: • Selected frequency value when output is OFF. • Frequency value during selection or adjustment. • Output frequency during normal operation. •...
  • Page 25 CHAPTER 3 UNIT DESCRIPTION V O L T A G E 0-300 0-150 OUTPUT / RESET FC200 Voltage Display Voltage Selection VOLTAGE display Displays the: • Selected voltage value when Output is OFF. • Voltage value during voltage adjustment. • Output voltage during normal operation. •...
  • Page 26 CHAPTER 3 UNIT DESCRIPTION C U R R E N T LOCK SYSTEM FC200 Current Display Current Selection CURRENT display Displays the: • Selected current value when Output is OFF. • Current value during current adjustment. • Output current during normal operation. •...
  • Page 27 CHAPTER 3 UNIT DESCRIPTION P O W E R / PF FC200 Power / PF Display Power / PF Selection POWER / PF display Displays the: • Power (in kW) • Power Factor P indicator When ON, displays output Power (kW). PF indicator When ON, displays Power Factor.
  • Page 28 CHAPTER 3 UNIT DESCRIPTION Cabinet FC200 controls and connections are conveniently located for ease of use and accessibility. Included are:  Power ON/OFF  PLC Control Port  Input Power Connection  Output Power Connection See the following page for illustrations. The Cabinet Controls Table on page 3-9 provides additional information about each of these items.
  • Page 29 CHAPTER 3 UNIT DESCRIPTION FC205 Rear Panel Cooling Fans Do Not Block Input Voltage Select Signal Output Input Power Output Power FC210 Rear Panel Cooling Fans Output Input Do Not Block Voltage Select Signal Output Must be set the same...

  • Page 30: Chassis Details

    Connection universal socket on the front panel. The terminals are labeled "G Chassis / Earth Ground; "N" neutral; and "L" Line. The FC205 uses universal sockets both front and rear CHASSIS DETAILS Handles Handles are provided with each unit and may be mounted to the unit if...

  • Page 31: Chapter 4 Operating Instructions

    CHAPTER 4 OPERATING INSTRUCTIONS Chapter 4 Operating Instructions Overview This chapter provides the details to help you be successful in setting up your FC200 Power Converter. Familiarity with material in Chapters 2 and 3 is also necessary. Chapter 2 provides general information about the FC200 Series. Chapter 3 illustrates the locations and functions of the front panel displays.

  • Page 32: Basic Operation

    CHAPTER 4 OPERATING INSTRUCTIONS Basic Operation System Information When the power is turned ON, the front panel momentarily displays:  The model number, in the VOLTAGE display.  The installed firmware version number, in the CURRENT display. Overview of Capabilities System parameters are identified and explained in this chapter.

  • Page 33: Voltage (Display) Setting

    CHAPTER 4 OPERATING INSTRUCTIONS Voltage (Display) Setting When the system is in RESET (Standby) or the TEST (Output ON) mode, you can adjust the voltage value. There are two ranges: high and low. The low voltage range is 0 – 150V and the high range is 0 – 300V. V O L T A G E 0-300 0-150...
  • Page 34 CHAPTER 4 OPERATING INSTRUCTIONS capacity. In the high voltage range, 0 – 300V, the current capacity is one-half (see Product Specifications, Chapter 2). During TEST (Output ON), you can switch between high and low voltage modes. Switching between high/low voltage modes will not affect the voltage setting. However, there will be a brief interruption of the output (about 20 milliseconds), during the change.

  • Page 35: Frequency (Display) Setting

    CHAPTER 4 OPERATING INSTRUCTIONS Frequency (Display) Setting When the system is in RESET (Standby) or the TEST (Output ON) mode, you can adjust the output frequency. F R E Q U E N C Y 50Hz 60Hz Frequency Display ︿ and ﹀ Buttons Pressing the ︿...

  • Page 36: Current Limit (Display) Setting

    CHAPTER 4 OPERATING INSTRUCTIONS Current Limit (Display) Setting When the system is in RESET (Standby) or the TEST (Output ON) mode, you can change the Current Limit value. C U R R E N T LOCK SYSTEM Current Display ︿ and ﹀ Buttons Press the ︿...

  • Page 37: Power / Pf (Display) Setting

    CHAPTER 4 OPERATING INSTRUCTIONS Power / PF (Display) Setting When the system is in RESET (Standby) or the TEST (Output ON) mode, you can switch between Power and Power Factor (PF) mode. However, unless the system is in TEST (Output ON) you will not have a displayed value. P O W E R / PF Power / PF Display P and PF Buttons Use the button beneath the P / PF indicators to switch between modes.

  • Page 38: Operations

    CHAPTER 4 OPERATING INSTRUCTIONS Operations Start Output BEFORE pressing the OUTPUT button (on the Voltage display), check to ensure every setting is correct. Press the OUTPUT button to start the output. The LED (above the OUTPUT / RESET button) will light, indicating normal voltage output. Stop Output Press the RESET button to stop any test.
  • Page 39 CHAPTER 4 OPERATING INSTRUCTIONS Lock Button Pressing the LOCK/LOCAL button (on the CURRENT display) will light the LOCK LED (on the CURRENT display) and disable the other controls, except the P / PF button on the (on the POWER / PF display). Pressing the LOCK/LOCAL button again unlocks the front panel.

  • Page 40: (Persistent) System Parameter Settings

    CHAPTER 4 OPERATING INSTRUCTIONS System Parameter Settings The FC200 front panel displays are used to present status, test data, and system parameters. This is the normal mode of display during operation. However, setting system parameters requires a special operator-selected mode (described below). System parameters are persistent.

  • Page 41: (Persistent) System Parameter Table

    CHAPTER 4 OPERATING INSTRUCTIONS System Parameter Table FREQUENCY VOLTAGE CURRENT DESCRIPTION DISPLAY DISPLAY DISPLAY   External Control / PLC Remote ON/OFF   Alarm Volume      Power-Up output status     Maximum frequency setting limit ...

  • Page 42: Setting (Persistent) System Parameters

    CHAPTER 4 OPERATING INSTRUCTIONS Setting System Parameters Frequency Voltage Current Display Display Display    PLC Remote(optional). Press the CURRENT ︿ or ﹀ buttons to toggle the PLC ON / OFF in the current display. OFF The system is controlled directly from the front panel. ...
  • Page 43 CHAPTER 4 OPERATING INSTRUCTIONS Frequency Voltage Current Display Display Display    Frequency Lo Limit. Press the CURRENT ︿ or ﹀ buttons to adjust the frequency limit value in the current display within the available range: 45.0 – 500.0 Hz. This value sets the lower frequency limit that can be adjusted during normal operation.

  • Page 44: Program Memory Procedures (Programming)

    CHAPTER 4 OPERATING INSTRUCTIONS Program Memory Procedures (Programming) Use the procedures in this section to program the three memories: M1, M2, and M3. Each program has three stored parameters: voltage, frequency, and current limit. Note: The System Parameters (described in the previous section) take precedence over any parameters stored in program memories.
  • Page 45 CHAPTER 4 OPERATING INSTRUCTIONS Recalling Memory Parameters  Recall a set of stored values by momentarily pressing and releasing the desired M-buttons.  When in RESET (Standby), use this recall approach to verify you have stored the values you want; or, you can establish values before you turn the output on. ...

  • Page 46: Error Messages

    Please carefully record the error message. The error MUST be resolved before resuming operation. If you are unable to resolve the error, please contact APS or the distributor for service. Contact information is found on page "v" of this manual.

  • Page 47: Error Message Table

    CHAPTER 4 OPERATING INSTRUCTIONS Error messages are displayed because of the following conditions:  OCP Output current exceeded 105% of units maximum-rated value  Hi-A Output current exceeded the set current high limit value  OtP System's critical temperature was exceeded ...

  • Page 48: Interpreting Error Messages

    CHAPTER 4 OPERATING INSTRUCTIONS Interpreting Error Messages  Frequency Display Output Current Exceeded 105%. If the output current exceeds 105% of the rated output, the FREQUENCY display will show OCP (Over Current Protect); an alarm will sound; the OUTPUT/RESET LED will flash; and the VOLTAGE and CURRENT displays will show the corresponding values at the time of overload.
  • Page 49 CHAPTER 4 OPERATING INSTRUCTIONS  Frequency Display Output Voltage Below Limit. If the output voltage is lower than the voltage setting by more than 5V on the 0-150V range or 10V on the 0-300V range, the FREQUENCY display will show LVP (Underr Voltage Protect); an alarm will sound; the OUTPUT/RESET LED will flash;...

  • Page 50: Output Signal

    CHAPTER 5 APPLICATIONS Chapter 5 External Interface Output Signal Signal Output The rear panel connector provides output signals to remotely monitor FAIL, and OUTPUT ON conditions. Below is a listing that indicates what conditions activate each pin. When a terminal becomes active, the relay closes thereby allowing the external voltage to operate an external device.

  • Page 51: Plc External Interface

    CHAPTER 5 APPLICATIONS PLC External Interface option The PLC external interface option allows remotely located contact closures to select one of seven sets of pre-programmed test parameters. The test parameters are entered in memory sets M1~M7. Operation of the PLC remote interface does not require a true PLC, as simple switch closures are effective at selecting, starting and stopping stored test programs.

  • Page 52: Chapter 6 System Calibration

    Overview Chapter 6 explains how to calibrate your FC200 Series Power Converter. Although each APS unit is carefully calibrated at the factory prior to shipment., periodic calibration is appropriate. Normal system maintenance requires calibration once a year (See Chapters 7).

  • Page 53: Calibration Setup

    ± 0.2%, (See Calibration Settings Table for your APS model)  Restive Load Bank, Calculated for your APS model (See following Example) How to Calculate the Size of the Test Load (Example) For an example, suppose your system is an FC210.
  • Page 54 CHAPTER 6 INSTRUMENTATION CALIBRATION WARNING THIS EQUIPMENT CONTAINS HIGH ENERGY, LOW IMPEDANCE CIRCUITS!! LETHAL POTENTIALS ARE CONTAINED WITHIN THE CABINET. CARE MUST BE EXERCISED WHEN OPERATING, CALIBRATING, OR SERVICING THIS EQUIPMENT, IN ORDER TO PREVENT SERIOUS OPERATOR INJURY OR EQUIPMENT DAMAGE. OBSERVE THE FOLLOWING WHEN SERVICE AND MAINTENANCE ARE REQUIRED: 5) REMOVE ALL JEWELRY FROM ARMS AND NECK WHEN SERVICING THIS EQUIPMENT.

  • Page 55: Calibration Instructions

     2XY corresponds to the model number and nominal power rating of your unit. Frequency Voltage Display Display   OUTPUT ELECTRICAL SPECIFICATIONS Model FC205 FC210 Total Power 500 VA 1 KVA Maximum 0 – 150 V 4.2 A 8.4 A Amps 0 –...
  • Page 56 CHAPTER 6 INSTRUMENTATION CALIBRATION Selecting Calibration Parameters  Following the power-up into the Calibration Mode, the FC200 unit enters the Low Voltage ( ) calibration mode.   Press the FREQUENCY ﹀ or ︿ buttons to select the system parameter you are going to calibrate.

  • Page 57: Low-Voltage Mode (V-Lo) Calibration

    (see Calibration Table below). Frequency Voltage Current Display Display Display    Calibration Settings Parameter FC205 FC210 V LO (VAC) 150.0 150.0 V HI (VAC) 300.0 300.0 A LO (A) 3.000 3.000 A HI (A) 4.00...

  • Page 58: High-Voltage Mode (V-Hi) Calibration

    CURRENT Display shows the calibration value (See Calibration Table, below). Frequency Voltage Current Display Display Display    Calibration Settings Parameter FC205 FC210 V LO (VAC) 150.0 150.0 V HI (VAC) 300.0 300.0 A LO (A) 3.000 3.000 A HI (A) 4.00...

  • Page 59: Low-Current Mode (A-Lo) Calibration

    Settings Table. Use 100 VAC for the voltage. 4. An example calculation is shown on page 6-2 in the Section Calculation Setup, subsection How to Calculate the Size of the Load. Calibration Settings Parameter FC205 FC210 V LO (VAC) 150.0 150.0 V HI (VAC) 300.0...
  • Page 60 CHAPTER 6 INSTRUMENTATION CALIBRATION 9. At the CURRENT Display, press the LOCK button to complete low-current calibration. 10. Proceed to the next calibration function, unless this completes system calibration. 11. Note, to exit the Calibration Mode, your FC200 unit must be restarted after you have completed ALL calibration operations.
  • Page 61 Table. Use 100 VAC for the voltage. 4. An example calculation is shown on page 6-2 in the Section Calculation Setup, subsection How to Calculate the Size of the Load. Calibration Settings Parameter FC205 FC210 V LO (VAC) 150.0 150.0 V HI (VAC) 300.0...
  • Page 62 CHAPTER 6 INSTRUMENTATION CALIBRATION 9. At the CURRENT Display, press the LOCK button to complete high-current calibration. 10. Proceed to the next calibration function, unless this completes system calibration. 11. Note, to exit the Calibration Mode, your FC200 unit must be restarted after you have completed ALL calibration operations.

  • Page 63: Low-Power Mode (P-Lo) Calibration

    VAC for the voltage. 4. An example calculation is shown on page 6-2 in the Section Calculation Setup, subsection How to Calculate the Size of the Load. Calibration Settings Parameter FC205 FC210 V LO (VAC) 150.0 150.0 V HI (VAC) 300.0...
  • Page 64 CHAPTER 6 INSTRUMENTATION CALIBRATION 9. At the CURRENT Display, press the LOCK button to complete low-power calibration. 10. Proceed to the next calibration function, unless this completes system calibration. 11. Note, to exit the Calibration Mode, your FC200 unit must be restarted after you have completed ALL calibration operations.

  • Page 65: High-Power Mode P-Hi) Calibration

    VAC for the voltage. 4. An example calculation is shown on page 6-2 in the Section Calculation Setup, subsection How to Calculate the Size of the Load. Calibration Settings Parameter FC205 FC210 V LO (VAC) 150.0 150.0 V HI (VAC) 300.0...
  • Page 66 CHAPTER 6 INSTRUMENTATION CALIBRATION 9. At the CURRENT Display, adjust the metered power using the ︿ or ﹀ buttons until the metered values match. 10. At the CURRENT Display, press the LOCK button to complete high-power calibration. 11. Proceed to the next calibration function, unless this completes system calibration. 12.

  • Page 67: Chapter 7 System Maintenance

    Do not modify this equipment. Any modifications void the warranty automatically, and violate the tested safety standards of the unit. APS does not take responsibility for such equipment. Parts or accessories not certified by APS will not be covered under the warranty.

  • Page 68: System Design

    CHAPTER 7 MAINTENANCE System Design FC200 Series power converters are high power linear technology amplifiers.. The all- digital control circuitry meters and displays system outputs, in addition to generating control signals. The system is microprocessor-based. Firmware in a proprietary EEPROM allows configuration upgrades. WARNING THIS EQUIPMENT CONTAINS HIGH ENERGY, LOW IMPEDANCE CIRCUITS!! LETHAL POTENTIALS ARE CONTAINED WITHIN THE CABINET.
  • Page 69 CHAPTER 7 MAINTENANCE 7.1 Block Diagram of the AC Power Source AC INPUT ISOLATED TRANSFORMER RECTIFIER & FILTER AC OUTPUT POWER OUTPUT AMPLIFIER TRANSFORMER CURRENT & VOLTAGE FEEDBACK SINE WAVE SYNTHESIZER CURRENT & VOLTAGE FREQUENCY FREQUENCY VOLTAGE CONTROL CONTROL SENSOR SENSORS KEYBOARD DISPLAY...

  • Page 70: Theory Of Operation

    CHAPTER 7 MAINTENANCE 7.2 THEORY OF OPERATION The FC 200 Series AC sources use isolated transformers and rectify the AC input voltage to create the DC supply for the power amplifier. The control circuit of the AC source is microprocessor controlled and is fully digital. The CPU regulates the frequency and amplitude of the sine wave via the digital synthesizer.

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