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IM2911

Revision A

28 September 2007

DOCUMENT SUBJECT TO U.S. EXPORT CONTROLS. COMPLIANCE APPROVAL REQUIRED PIOR TO DISTRIBUTION.

MODEL 2911

HIGH FREQUENCY SHAKER ASSEMBLY

INSTRUCTION

MANUAL

San Juan Capistrano, California, U.S.A.

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Summary of Contents for 2911

Page 1: ...sion A 28 September 2007 DOCUMENT SUBJECT TO U S EXPORT CONTROLS COMPLIANCE APPROVAL REQUIRED PIOR TO DISTRIBUTION MODEL 2911 HIGH FREQUENCY SHAKER ASSEMBLY INSTRUCTION MANUAL San Juan Capistrano California U S A ...

Page 2: ...IM2911 Revision A 28 September 2007 DOCUMENT SUBJECT TO U S EXPORT CONTROLS COMPLIANCE APPROVAL REQUIRED PIOR TO DISTRIBUTION ...

Page 3: ...RUCTIONS 1 UNPACKING AND INSPECTION 3 1 2 INSTALLATION 3 1 3 CHECKOUT 3 1 4 OPERATION 3 1 SECTION 4 THEORY OF OPERATION 1 THEORY OF OPERATION 4 1 SECTION 5 MAINTENANCE AND CALIBRATION 1 MAINTENANCE 5 1 2 CALIBRATION 5 1 3 TROUBLESHOOTING GUIDE 5 1 4 REPAIR 5 2 5 FACTORY SERVICE 5 2 SECTION 6 ACCESSORIES 1 ACCESSORIES INCLUDED 6 1 2 ACCESSORIES OPTIONAL 6 1 SECTION 7 DRAWINGS AND DIAGRAMS 1 GENERAL...

Page 4: ...ed in a hostile environment and covered when not in use Never attempt to operate the shaker without an adequate air supply this will damage the shaker and void the warranty The air supply must be filtered for water and oil as well as particles greater than 10 microns in size Dry nitrogen can be used If a bottle of gas is used be aware that there always is a leak on the system and must be turned of...

Page 5: ... for the drive signal See S ection 7 for more detailed shaker connection information The inch plumbing connector is for clean dry air free of oil water or particles bigger than 10 microns Shaker should always have air applied before operation is attempted The cable coming out of the shaker is the output of the reference accelerometer ...

Page 6: ... a sweep that specifies the 2911 shaker to be used will activate the shaker After the audible click of the air solenoid push down on the armature slightly If it moves freely this means that the system applied the air and the system configuration and the connections are correct If not read the IM68357 sections about System Configuration Editor Exciter Definitions and Model Test Definitions The UUT ...

Page 7: ... The interaction of the magnetic fields is what causes the armature to move up and down The armature is similar to part of an AC motor The reference accelerometer is mounted on the underside of the surface that accepts accelerometers under test This is required to accurately measure the acceleration seen by the Unit Under Test UUT The reference accelerometer calibration is traceable to National In...

Page 8: ...re does not move freely with air applied After adjusting or if there is a noticeable change a shaker characterization should be performed This is a function performed on the AACS system The Shaker Characterization procedure does not affect calibration It merely measures responses to known electrical inputs to allow the system to better guess what levels of drive signal to provide to accomplish any...

Page 9: ...ecifications return the shaker to the factory A detailed statement describing the fault noted should always accompany it ENDEVCO warrants each new instrument to be free from defects in material and workmanship for one year from the date of sale to the original purchaser This warranty does not extend to units that have been mistreated used in violation of Endevco recommendations or to units that ha...

Page 10: ...er Bushing 1 4 28 UNF to 6 32 UNC 1 14159 4 Adapter Bushing 1 4 28 UNF to 2 56 UNC 1 EHM374 Hex Wrench 1 8 in 1 EHM1020 Hex Wrench 1 4 in 2 ACCESSORIES OPTIONAL The following accessories for use with the Model 2911 are available from ENDEVCO QTY PART NUMBER DESCRIPTION 1 34699 Isolation Mounting Kit 1 14159 3 Adapter Bushing 4 40 UNC 1 14159 5 Adapter Bushing 4 48 UNF 1 14159 6 Adapter Bushing 8 3...

Page 11: ...1 Shaker Control DB25 Plug Pin Description NU not used Pin Description NU not used 1 NU 14 NU 2 NU 15 NU 3 NU 16 NU 4 NU 17 NU 5 NU 18 Armature ground 6 Armature ground 19 PA Out 7 PA Out 20 PA Out 8 PA Out 21 PA Out 9 PA Out 22 PA Out 10 PA Out 23 PA Out 11 PA Out 24 PA Out 12 PA Out 25 PA Out 13 PA Out DIAGRAM 1 ...

Page 12: ...ENDEVCO 2911 INSTRUCTION MANUAL IM2911 Page 7 2 2 DRAWINGS FIGURE 1 OUTLINE DRAWING ...

Page 13: ...ENDEVCO 2911 INSTRUCTION MANUAL IM2911 Page 7 3 FIGURE 2 TOP VIEW FIGURE 3 SIDE VIEW OF STATOR REMOVED ...

Page 14: ...ENDEVCO 2911 INSTRUCTION MANUAL IM2911 Page 7 4 FIGURE 4 BASE AFTER STATOR REMOVED 2911 max G levels 0 5 10 15 20 25 30 35 40 45 10 100 1000 10000 100000 Freq g s attained 111 grams 17 grams ...

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