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Powerten 3300 Series Operation Manual

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3300 Series
DC Power Supplies
Operation Manual
PowerTen
9250 Brown Deer Road
San Diego, CA 92121-2294
1-800-978-6680
Tel: (858) 458-0253
Fax: (858) 458-0237
Email: sales@powerten.com
www.powerten.com
©2002 by PowerTen. This document contains information proprietary to PowerTen. The information contained
herein is not to be duplicated or transferred in any manner without prior written permission from PowerTen.
January 11, 2002
Document No. M520086-01 Rev A

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  • Page 1 Email: sales@powerten.com www.powerten.com ©2002 by PowerTen. This document contains information proprietary to PowerTen. The information contained herein is not to be duplicated or transferred in any manner without prior written permission from PowerTen. January 11, 2002 Document No. M520086-01 Rev A...
  • Page 2 Before applying power to the system, verify that the unit is configured properly for the user's particular application. The 3300 series of power supplies is intended for rack mounted application only. Use of the power supplies outside of a rack mount enclosure will expose the user to high voltage and/or high current sources.
  • Page 3 SERVICE SAFETY NOTICES WARNING! HAZARDOUS VOLTAGES IN EXCESS OF 480 V RMS, 700 V PEAK MAY BE PRESENT WHEN COVERS REMOVED. QUALIFIED PERSONNEL MUST USE EXTREME CAUTION WHEN SERVICING THIS EQUIPMENT. CIRCUIT BOARDS, TEST POINTS, OUTPUT VOLTAGES FLOATING ABOVE CHASSIS GROUND. WARNING! TO GUARD AGAINST RISK OF ELECTRICAL SHOCK DURING OPEN COVER CHECKS, DO...

  • Page 4: Fcc Notice

    FCC NOTICE This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment.

  • Page 5: About This Manual

    About This Manual This manual has been written expressly for the Power Ten 3300 Series of power supplies. SAFETY SYMBOLS CAUTION Protective Conductor Terminal Risk of Electrical Shock CAUTION Alternating Current (AC) Refer to Accompanying Documents M520086-01...

  • Page 6: Table Of Contents

    TABLE OF CONTENTS Chapter 1 DESCRIPTION OF EQUIPMENT____________________________________ 1-1 1.1 PURPOSE AND CAPABILITIES _______________________________________________ 1-1 1.2 TECHNICAL CHARACTERISTICS_____________________________________________ 1-1 Chapter 2 INSTALLATION __________________________________________________ 2-1 2.1 INSPECTION _______________________________________________________________ 2-1 2.2 INPUT/OUTPUT CONNECTORS ______________________________________________ 2-1 2.3 LOCATION AND MOUNTING ________________________________________________ 2-1 2.4 CHECKOUT AND PRELIMINARY ADJUSTMENTS ______ Error! Bookmark not defined. Chapter 3 OPERATING INSTRUCTIONS ______________________________________ 3-4 3.1 CONTROLS AND INDICATORS_______________________________________________ 3-4 3.1.1...
  • Page 7 TABLE 4-1 PREVENTIVE MAINTENANCE SCHEDULE .............. 4-1 TABLE 4-2 INSPECTION AND CORRECTIVE ACTION............... 4-2 LIST OF FIGURES FIGURE 3-1 3300 SERIES CONTROLS AND INDICATORS ............3-4 FIGURE 3-2 NORMAL CONNECTION PATTERN..............3-11 FIGURE 3-3 REMOTE RESISTANCE PROGRAMMING OF OUTPUT CURRENT ....3-11 FIGURE 3-4 REMOTE VOLTAGE PROGRAMMING OF OUTPUT CURRENT ......

  • Page 8: Chapter 1 Description Of Equipment

    DESCRIPTION OF EQUIPMENT PURPOSE AND CAPABILITIES The Power Ten 3300 Series power supplies are general purpose power supplies designed specifically for laboratory test and systems applications requiring variable DC sources with good regulation and low output ripple characteristics. Models of the 3300 Series are constant current/constant voltage supplies with an automatic crossover feature.

  • Page 9: Table 1-1 3300 Series Technical Characteristics

    Table 1-1 3300 Series Technical Characteristics PARAMETERS SPECIFICATIONS PHYSICAL CHARACTERISTICS: 19.00 in. Width 18.50 in Depth 1.75 in. Height 15 lb. max. Weight ELECTRICAL CHARACTERISTICS: Input Power (Standard) 95 to 127 VAC, 190 to 253 VAC (Option) Voltage 47 to 63 Hz...
  • Page 10 Table 1-1 3300 Series Technical Characteristics - Continued PARAMETERS SPECIFICATIONS Remote Programming Resistive: Constant Voltage (0-100%) 0 - 5k ohms Constant Current (0-100%) 0 - 5k ohms Voltage: Constant Voltage (0-100%) 0 - 5 VDC Constant Current (0-100%) 0 - 100 mV...

  • Page 11: Table 1-2 3300 Series Technical Characteristics

    Table 1-2 3300 Series Technical Characteristics OUTPUT DC OUTPUT DC OUTPUT MODEL NUMBER VOLTS AMPS RIPPLE (RMS) 7.575 0-7.5 30 mV 7.5125 0-7.5 30 mV 1060 0-10 30 mV 10100 0-10 30 mV 2030 0-20 30 mV 2050 0-30 30 mV...

  • Page 12: Chapter 2 Installation

    LOCATION AND MOUNTING The 3300 Series models are intended for mounting in a standard 19.0-inch equipment rack. Four captive screws, two on each side of the front panel, are used to secure the unit in place.
  • Page 13 Table 2-2 Input Connection Descriptions SUPPLY TYPE CONNECTION DESCRIPTION 3300, 3300I Terminal Block with 6-32 screws Table 2-3 3300 Series Input/Output Connectors CONNECTOR FUNCTION CONNECTS TO TB2 - AC Prime Power Input (Std)* 95 to 127 VAC TB2 - AC...
  • Page 14 2.4 WIRE SIZING Care must be taken to properly size all conductors for the input and output of the power supply. Table 2-5 below gives minimum recommended wire size for the input. This table is derived from the National Electrical Code and is for reference only. Local laws and conditions may have different requirements.
  • Page 15 16.75 Ø0.25 2 PL 1.00 18.15 0.125 1.75 19.00 Figure 2-1 Outline Drawing, 3300 Series M520086-01...

  • Page 16: Chapter 3 Operating Instructions

    Chapter 3 OPERATING INSTRUCTIONS CONTROLS AND INDICATORS Front panel controls and indicators for the 3300 Series are identified in Figure 3-1 with index numbers keyed to Table 3-1. Table 3-1 provides a description of all operator controls and indicators. 3.1.1...

  • Page 17: Table 3-1 3300 Series Controls And Indicators

    Table 3-1 3300 Series Controls and Indicators FIGURE & FUNCTION INDEX NO. CONTROL/INDICATOR Circuit Breaker Provides fault protection Power Switch Applies AC power to the power supply. VOLTAGE Meter Measures voltage output. Voltage Mode Indicator Indicates the power supply is operating in the voltage mode.

  • Page 18: Table 3-2 Barrier Strip (Tb1) Designations And Functions

    Table 3-2 Barrier Strip (TB1) Designations and Functions SCHEMATIC FUNCTIONAL DESIGNATOR SYMBOL DESCRIPTION Positive output voltage for local voltage sensing. Positive voltage sensing terminal.* VPROG 1 milliamp current source for either local or remote voltage programming using resistance. VCONT Voltage control input terminal. VSET Front panel voltage control potentiometers for local control.

  • Page 19: Remote Current Programming

    Table 3-2 Barrier Strip (TB1) Designations and functions - Continued SCHEMATIC FUNCTIONAL DESIGNATOR SYMBOL DESCRIPTION ON/OFF Return for AC/DC voltage source used for remote on/off AC/DC RTN control. ON/OFF Externally supplied AC/DC voltage source for on/off AC/DC output voltage control. This is a positive (+) terminal for DC voltage.

  • Page 20: Remote Sensing

    programming, the programming coefficient is 0.1 volt per percent of rated output or 10 volts = 100%. See Figure 3-6 for connection requirements. 3.1.4 Remote Sensing In applications where the load is located some distance from the power supply, or the voltage drop of the power output leads significantly interferes with load regulation, remote voltage sensing may be used.

  • Page 21: Auto-Parallel Operation

    NOTE The following modes of operation are used for applications requiring more current or voltage than is available from a single power supply. To meet the requirements for greater output voltage or current, two or more supplies may be connected in series or parallel.

  • Page 22: Output Overvoltage Protection

    Individual current controls on both master and slave(s) remain active. See Figure 3-12 for connection requirements. 3.1.9 Output overvoltage Protection If the power supply is equipped with an overvoltage crowbar, the front panel will contain overvoltage adjustment. The potentiometer controlling overvoltage may be adjusted through an access hole in the front panel.

  • Page 23: Figure 3-2 Normal Connection Pattern

    Figure 3-2 Normal Connection pattern Figure 3-3 Remote Resistance Programming of Output Current M520086-01 3-11...
  • Page 24 Figure 3-4 Remote Voltage Programming of Output Current Figure 3-5 Remote Resistance Programming of Output Voltage M520086-01 3-12...
  • Page 25 Figure 3-6 Remote Voltage Programming of Output Voltage Figure 3-7 Remote Sensing Operation M520086-01 3-13...
  • Page 26 Figure 3-8 Remote On/Off Control by Contact Closure Figure 3-9 Remote On/Off Operation Using AC/DC Voltage Source M520086-01 3-14...

  • Page 27: Figure 3-10 Auto-Parallel Operation

    Figure 3-10 Auto-Parallel Operation M520086-01 3-15...

  • Page 28: Figure 3-11 Auto-Series Operation

    Figure 3-11 Auto-Series Operation M520086-01 3-16...

  • Page 29: Figure 3-12 Auto-Tracking Operation

    Figure 3-12 Auto-Tracking Operation M520086-01 3-17...

  • Page 30: Chapter 4 Maintenance And Calibration

    Hazardous voltages exist inside the unit. 4.2 PREVENTIVE MAINTENANCE Preventive maintenance for the 3300 Series consists of scheduled inspection and cleaning. Schedule. Table 4-1 lists the preventive maintenance routines and the recommended performance intervals. Inspection. Table 4-2 lists the visual inspection checks to be performed. It also indicates the corrective action to be taken.

  • Page 31: Table 4-2 Inspection And Corrective Action

    Table 4-2 Inspection and Corrective Action ITEM INSPECT FOR CORRECTIVE ACTION External Connector Looseness, bent or corroded Clean contacts with solvent plugs and jacks contacts, damage or improper moistened cloth, soft bristle brush, seating in mating connector small vacuum or low compressed air.

  • Page 32: 4.3 Calibration And Adjustments

    4.3 CALIBRATION AND ADJUSTMENTS To perform the following calibration and adjustment procedures, the cover must be removed from the power supply. Because removal of the cover allows access to potentially hazardous power voltages (up to 253 VAC or 358 VDC) and because of the importance of accurate readings to performance, only technically trained personnel should perform calibration procedures.
  • Page 33 Set voltage control potentiometer on front panel fully counterclockwise. Connect a precision DMM to TB1-8(+) with reference to TB1-11(-). Set DMM to DC milliamps and 2 milliamp range. Apply power to power supply. Adjust R71 for 1.000 milliamps on DMM. Current Zero Calibration The voltage control circuit (U8) zero is adjusted by R106.
  • Page 34 Adjust R87 until the power supply output voltage starts to increase in normal polarity. Reverse adjustment direction of R87 until output voltage decreases to zero reading on the DMM. Do not continue adjustment when the output reads zero volts. Current Full-Scale Calibration Full-scale current calibration is accomplished by adjusting R88.

  • Page 35: Display Assembly

    Current Monitor/Parallel Tracking Amplifier Full-Scale Calibration The current monitor/parallel tracking amplifier is accomplished by adjusting R77. The following sequence is recommended. a. Connect an external calibrated current shunt between the power supply negative output and a resistive load bank capable of full-rated power. (As an option, the shunt may be connected between the power supply positive and negative output bus bars.) b.

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