Keithley 7054 Instruction Manual Download Page 1

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Summary of Contents for 7054

Page 1: ...l service in house repair center WE BUY USED EQUIPMENT Sell your excess underutilized and idle used equipment We also offer credit for buy backs and trade ins www artisantg com WeBuyEquipment REMOTE INSPECTION Remotely inspect equipment before purchasing with our interactive website at www instraview com LOOKING FOR MORE INFORMATION Visit us on the web at www artisantg com for more information on ...

Page 2: ...Model 7054 High Voltage Scanner Card Instruction Manual Contains Operating and Servicing Information Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com ...

Page 3: ...is warranty does not apply to defects resulting from product modification without Keithley s express written consent or misuse of any product or part Tbis warranty also does not apply to fuses software non rechargeable batteries damage from battery leak age or problems arising from normal wear or failurc to follow instructions THISWARRANTYISINLJELJOFALLOTHEXW EXPRJZXED OR IMPLIED INCLUDING ANY IMP...

Page 4: ... Q 1987 Keithley Instruments Inc Test Instrumentation Group All rights reserved Cleveland Ohio U S A February 1987 Third Printing Document Number 7054 901 01 Rec C Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com ...

Page 5: ... possible wear cracks or breaks before each use For maximum safety do not touch the product test cables or any other instruments while power is applied to the circuit under test ALWAYS re move power from the entire test system and discharge any capacitors be fore connecting or disconnecting cables or jumpers installing or removing switching cards or making internal changes such as installing or re...

Page 6: ...terlock If a screw is present on the test fixture connect it to safety earth ground using 18 AWG or Iarger wire The t symbol on an instrument or accessory indicates that IOOOVor more may be present on the terminals Refer to the product manual for de tailed operating information Instrumentation and accessories should not be connected to humans Maintenance should be performed by qualified service pe...

Page 7: ... 10 6closures at maximum signal level CONTACT RESISTANCE c 1l l ACTUATION TIME 2Oms exclusive of mainframe CHANNEL ISOLATION 10 9 and c 10pF INPUT ISOLATION 109Rand 150pF GUARD TO CHASSIS VOLTAGE 200V maximum ENVIRONMENT Operating 0 to SOT up to 35 C at 70 non condensing relative humidity Storage 25 to t7O C DIMENSIONS WEIGHT 32mm high x l run wide x 272mm long l x 44 2 x 10 Net weight 0 28kg 10 o...

Page 8: ...ions 6 2 6 Applications 11 2 7 Switch Terminology 13 SECTION 3 SERVICING INFORMATION 3 1 Introduction l5 3 2 Handling and Cleaning 15 3 3 Recommended Test Equipment 16 3 4 Contact Resistance Test 16 3 5 Isolation Tests 18 3 5 1 Channel isolation 18 3 5 2 Input Isolation 19 SECTION 4 REPLACEABLE PARTS ii Introduction 21 Replaceable Parts 22 4 3 Ordering Information 22 4 4 Factory Service 22 4 5 Com...

Page 9: ...ction Current 9 2 2 Limiting In uctive Reaction Voltage 10 2 3 Measuring 3 Phase Voltages 12 2 4 Switch Terminology 13 SECTION 3 SERVICING INFORMATION 3 l Contact Resistance 17 3 2 Channel Isolation 19 3 3 Input Isolation 20 SECTION 4 REPLACEABLE PARTS 4 1 Model 7054 Component Layout 23 4 2 Model 7054 Schematic Diagram 25 ii Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE...

Page 10: ...mum signal levels Contact resistance is less than 10 The relay drive current is 50mAlrelay The Model 7054 is field installable in an appropriate Keithley scanner mainframe e g Model 705 or Model 706 With the isolation between each channel being greater than 1O Q and less than lOpF each chan nel is well insulated from cross channel noise and interference 1 2 WARRANTY INFORMATION Warranty informatio...

Page 11: ...ge may be present on the The WARNING used in this manual explains dangers that could result in personal injury or death The CAUTION used in this manual explains hazards that could damage the instrument 1 5 UNPACKING AND INSPECTION The Model 7054 was inspected both electrically and mechanically before shipment Upon receiving the Model 7054 unpack all items from the shipping carton and check for any...

Page 12: ...1 6 SPECIFICATIONS Detailed specifications of the Model 7054 precede the Table of Contents of this manual 314 Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com ...

Page 13: ...ctions 1 Do not exceed the Model 7054 maximum voltages of ltlOOOVpeak terminal to terminal and l35OV peak terminal to chassis 2 Make sure the scanner mainframe is grounded through an earth grounded receptacle before operation 3 Ins an f ect alI test lead connections for wear and defects such as cracks exposed wires 4 Use appropriately rated cables when switching high voltages 2 3 WIRING Each chann...

Page 14: ...e size is No 26 AWG 5 Route the wires through the rubber clamp pads located at the rear of the card 2 4 INSTALLATION AND REMOVAL Once the card is wired insert it card edge first into the scanner main frame by aligning it with the grooves in the appropriate slot Make sure it is properly seated into the mainframe connector Push the locking tabs forward to the center of the card to lock it in To remo...

Page 15: ...O GUARD This prevents excessive radiation from the cables from in terfering with any equipment The cables must be rated for greater than 1ooOV Fusible Links The Model 7054 scanner card has a fusible link in series with the high input side of each channel relay A link opens when the current level on that channel becomes excessive because of an external circuit misapplication or a relay failure The ...

Page 16: ...apacitive loads and voltage clamping for inductive loads are required to prevent damaging the relays and external circuitry 1 Ca acitive Loads The surge current from a ca acitive load must be ess than 0 5A to protect the relays Figure 2 P P shows typical cir cuits to limit current surges Also consider the maximum load of 1OVA when determining the current limit For example when switch ing 5OOV the ...

Page 17: ...HIGH RESISTANCE COLD LOW RESISTANCE HOT FAST THERMAL RECOVERY B THERMISTOR LIMITED LOAD Figure 2 l Limiting Capacitive Reaction Current 9 Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com ...

Page 18: ... DIODE CLAMPED DC VOLTAGES C ZENER CLAMPED AC VOLTAGES LOAD D RESISTOR CAPACITORCLAMPED AC VOLTAGES Figure 2 2 Limiting Inductance Reaction Voltage 10 Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com ...

Page 19: ...utput of the card only one of the channel LOS is connected To prevent card damage voltage clamping is necessary when monitor ing line voltages Current limiting or voltage cIamping are necessary when measuring capacitive or inductive loads Put the protection cir cuitry between the source of the transient and the card An example of switching a high voltage source is given in Application Note 700 Swi...

Page 20: ...4 IN SCANNER MAINFRAME CHANNEL CHANNEL CHANNEL 0uTPLrr HI LO HI LO HI LO HI LO L Figure 2 3 Measuring 3 Phase Voltages Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com ...

Page 21: ... except that its contacts are normally closed SPNC A 2 pole normally closed switch is called 2 Form B 3 Form C is a sin le ole double throw switch SPILT A 2 pole con figuration is cz iB e 2 Form C FORM A SPNO SINGLE POLE NORMALLY OPEN FORM B SPNC SINGLE POLE NORMALLY CLOSED FORM C SPDT 0 SINGLE POLE DOUBLE THROW Figure 2 4 Switch Terminology Artisan Technology Group Quality Instrumentation Guarant...

Page 22: ...he procedures in this section unless you are a qualified service person Some of the pro cedures may expose you to potentially lethal voltages 30V RMS that could result In personal Injury or death if normal safety precautions are not observed Recommended maintenance includes inspection of the scanner card and the card edge connector to ensure good electrical contact The Model 7054 does not require ...

Page 23: ... the V I mode instead of the Model 614 electrometer and Model 230 voltage source Table 3 1 Recommended Test Equipment Description Specification Mfr Model Scanner Mainframe Extender Card DMM IQ sensitivity Voltage Source l OOVDC Electrometer lo OA Keithley 705 or 706 Keithley 7061 Keithley 196 Keithley 230 Keithley 614 or 617 3 4 CONTACT RESISTANCE TEST This test measures the resistance of each rel...

Page 24: ...indicate a short circuit less than 1Q 4 Open channel 1 from the scanner front panel The reading on the Model 196 should indicate an open circuit 5 Repeat steps 3 and 4 for the remaining channels on the card r MODEL 7054 IN SCANNER MAINFRAME CHANNEL UNDER TEST OuTPur t HI LO HI LO KELVIN TEST LEADS ___ Figure 3 1 Contact Resistance Artisan Technology Group Quality Instrumentation Guaranteed 888 88 ...

Page 25: ... Model 230 to output 1OOV Take the electrometer out of zero check 4 The electrometer should read less than 10 OA Due to the capacitance of the circuit the offset current may be high until the circuit capacitance is charged up Wait until the readings settle out 5 Using Ohms law calculate the channel isolation the leakage resistance between two channels For example R E I 100VllO A XP2n NOTE With the...

Page 26: ...annel 1 and the step mode Program all chan nels as open 3 Set the electrometer to amps and zero check Program the Model 230 to output 1OOV Take the electrometer out of zero check 4 The electrometer should read less than 10 A Due to the capacitance of the circuit the offset current may be high until the circuit capacitance is charged up Wait until the readings settle aut 19 Artisan Technology Group...

Page 27: ... mode the resistance is calculated automatically 6 Put the Model 230 in standby mode and set the electrometer to zero 7 Repeat steps 2 through 6 for the remaining channels MODEL 7054 IN SCANNER MAINFRAME CHANNEL UNDER TEST HI OUTPUT lo HI Figure 3 3 input Isolation 20 Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com ...

Page 28: ...Desig Cl01 JlOOl J1002 J1003 KlOl KllO SQlOl SQllO Table 4 1 Model 7054 Replaceable Parts Description Keithley Part No Capacitor lOpF 25V Aluminum Electrolytic C 314 10 Connector cs 464 1 Connector CS 464 2 Connector cs 464 2 Relay Single Pole Form A RL 76 Fusible Link No 38 AWG Magnet Wire Plexiglas Shield 7054 302 Upper Clamp Assembly 7055 303 05 Lower Clamp Assembly 7055 308 Artisan Technology ...

Page 29: ...RVICE If fault can be isolated to a particular card then it is sufficient to return just the card s Otherwise send back both the card s and the scan ner mainframe For service photocopy and complete the service form which follows this section and return it with the equipment 4 5 COMPONENT LAYOUT AND SCHEMATIC DIAGRAM Figure 41 shows a component layout of the Model 7054 Figure 42 shows the schematic...

Page 30: ... r 7 L A 1 z EO b I N I 1 t I n I D Figure 4 1 Model 7054 Component Layout 23124 Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com ...

Page 31: ...F HCiXLi C6 W t F S ALL CAPACITOR VALUES AFIEv WCROFAFWS UNLESS OTHERWISE MARKED p P OF R DS v DENOTES DIGITAL COMMON Figure 4 2 Model 7054 Schematic Diagram 25126 Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com ...

Page 32: ...p Unable to zero 0 Unstable D Wtinot read applied input cl Overload cl calibration only cl Certificate of aliiration required P Datarequired attach any additicmal sheets as necessary show a block diagram of your meammnent system includiig all instruments mnnected whether power is hmwd on or not Also desaibe signal sowx where is the measurement b g perfomxd factory mnbolled laboratory out of dwm et...

Page 33: ...eithley Instruments Inc Test Instrumentation Group 28775 Aurora Road Cleveland Ohio 44139 Printed in the U S A Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com ...

Page 34: ...l service in house repair center WE BUY USED EQUIPMENT Sell your excess underutilized and idle used equipment We also offer credit for buy backs and trade ins www artisantg com WeBuyEquipment REMOTE INSPECTION Remotely inspect equipment before purchasing with our interactive website at www instraview com LOOKING FOR MORE INFORMATION Visit us on the web at www artisantg com for more information on ...

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