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Oriel 68805 Manual

Arc lamp power supply
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Oriel 68805 Manual

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Summary of Contents for Oriel 68805

  • Page 1 Artisan Technology Group is your source for quality new and certified-used/pre-owned equipment SERVICE CENTER REPAIRS WE BUY USED EQUIPMENT • FAST SHIPPING AND DELIVERY Experienced engineers and technicians on staff Sell your excess, underutilized, and idle used equipment at our full-service, in-house repair center We also offer credit for buy-backs and trade-ins •...
  • Page 2 MODEL 68805 Please read these instructions completely before operating this equipment. If there are any questions or problems regarding the use of this equipment, please contact: ORIEL INSTRUMENTS - or - the representative from whom this equipment was purchased. L.O.T. - ORIEL S.A.

  • Page 3: Table Of Contents

    TABLE OF CONTENTS SAFETY ..............1 II.

  • Page 4: Safety

    - Connections to or from any electrical device must never be made while the device is switched - The Oriel Model 68805 Power Supply is such a device. It has an open circuit voltage of >160 volts when the start switch is pressed, and could be dangerous if care is not exercised when the power supply is switched on.

  • Page 5: Introduction

    A constant current power supply regulates current even into a short circuit, and the model 68805 is safely limited to 12 amperes or 300 watts . Also, the inrush current to the lamp is limited to a maximum of 12 amperes, and the reduced discharge current minimizes electrode erosion when starting the arc lamp.
  • Page 6 Remote capability also includes an input that may be used for external control, modulation, or intensity control. The 68805 Arc Lamp Power Supply was designed to be a reliable and efficient current source. The adjustable 0.5 to 11 ampere current output, the large voltage compliance from 0 volts to 100 volts, and the 300 watt power limit will allow it to operate all arc lamps that are rated for DC operation in this voltage, current, and power range.

  • Page 7: Specifications

    68805-M ARC LAMP POWER SUPPLY III. SPECIFICATIONS AC Mains Input: 95–135 VAC @ 8 amperes 135–270 VAC @ 4 amperes 50 or 60 Hertz, 10 ampere inrush DC Power Output: 300 watts maximum DC Current Output: Adjustable from 0.5 – 11 amperes...

  • Page 8: Controls And Connections

    VOLTS AMPS 68805 UNIVERSAL POWER SUPPLY Figure 3-1 68805 Front Panel Layout METER AND VOLTAGE, WATTS, AND AMPS SWITCH The analog meter is scaled to display the output voltage, current, and wattage. Keep in mind that the meter monitors the output voltage of the supply not the load, and that the output power is always displayed by the meter.
  • Page 9 68805-M ARC LAMP POWER SUPPLY OUTPUT AND CURRENT PREADJUST SWITCH A ten turn potentiometer is used to provide a precise means of output current adjustment. A shaft lock is mounted with this knob to lock in a setting if a readjustment from a previous current setting is not desired.
  • Page 10 J 3 0 4 J 3 0 2 J305 Figure 3-2 68805 Rear Panel Layout AC MAINS INPUT (J304) J304 is an IEC style socket which will accept power cords for worldwide use of the power supply. The AC mains cord is connected here.
  • Page 11 ARC LAMP POWER SUPPLY INTERLOCK SOCKET (J301) This connection must be made, otherwise the main power supply will not turn on. ORIEL normally ships a shorting plug which mates to this socket. The shorting plug must be replaced with the connector that is supplied with the lamp housing in order to take advantage of its protection feature.
  • Page 12 68805-M ARC LAMP POWER SUPPLY REMOTE CONNECTOR (J302) Access to the internal metering, and control signals is provided through this connector. It is a twelve (12) pin circular connector with the following pin assignments: J302 J302 Pin Assignment Pin 1 External control input.
  • Page 13 ARC LAMP POWER SUPPLY SETUP AND USE The Oriel Model 68805 Arc Lamp Power Supply was designed for ease of use with a wide variety of arc lamp light sources. Please follow the above precautions, and the following procedures to use the power supply safely.

  • Page 14: Circuit Description

    Please refer to schematic number 68805–3–1001 when reading this section. The schematic gives a block diagram view of the major components of the power supply. The 68805 was designed in a modular way for reliability and for maintenance, and the schematic reflects this component approach to the power supply design.
  • Page 15 Meter Board (68805–1210) Please refer to schematic number 68805–3–1211 for this circuitry. J1 pins 7 and 9 provide the AC for this circuit. This is rectified and filtered by CR1, C1 and C3. The raw DC is applied to VR1 and VR2 which then supply the regulated +/- 15 volts for the supervisory circuits.
  • Page 16 Current display trimmer Power display trimmer Voltage display trimmer Preadjust display trimmer See schematic number 68805-3-1211 for their location. Ignitor Drive (68810-3-1601) Please refer to schematic number 68810-3-1601 for this circuitry. Ignitor Drive and Output Monitor Circuit The ignitor drive PCB contains circuitry to generate the 25kHz square wave required by the ignitor.

  • Page 17: Calibration And Troubleshooting

    ARC LAMP POWER SUPPLY VI. CALIBRATION AND TROUBLESHOOTING Warning: The power module (27-20-007) of the model 68805 power supply has no field serviceable parts. Do not attempt to repair the module in the field. If a failure of the module occurs, then contact your local representative for service.
  • Page 18 No attempt should be made to repair the power supply module to the component level . Simply replace and return the defective module to Oriel. A flow chart of a suggested approach to troubleshooting is on the next page. Please use it as a guide for resolving any problems.
  • Page 19 Apply the Main Power ST ART and Turn the Unit ON 68805-M ARC LAMP POWER SUPPLY Check AC line, Power line cord, CB 201, S 301 Insert or Repair Interlock Open Does Press the preadjust switch. Circuit the Meter Interlock...

  • Page 20: Warranty And Returns

    ONLY IF the defective goods are returned, freight prepaid, to an Oriel Instruments designated facility. If goods are not returned to Oriel Instruments, and user chooses to have repairs made at their premises, Oriel Instruments shall provide labor for field adjustment, repair and/or replacement at prevailing rates for field service, on a portal-to-portal basis.
  • Page 21 RMA may be rejected by the Oriel Receiving Department. Equipment returned under warranty will be returned with no charge for the repair or shipping. Oriel will notify you of repairs not covered by warranty, with the cost of the repair, before starting the work.
  • Page 22 Artisan Technology Group is your source for quality new and certified-used/pre-owned equipment SERVICE CENTER REPAIRS WE BUY USED EQUIPMENT • FAST SHIPPING AND DELIVERY Experienced engineers and technicians on staff Sell your excess, underutilized, and idle used equipment at our full-service, in-house repair center We also offer credit for buy-backs and trade-ins •...