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QuadTech Sentry 50 Instruction Manual

Ground bond tester
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The material in this manual is for informational purposes only and is subject to change, without notice.
QuadTech assumes no responsibility for any error or for consequential damages that may result from the
Potentially dangerous energy levels may be present on the front and rear panel terminals. Follow all
warinigs in this manual when operating or servicing this instrument. Dangerous levels of energy may be
stored in capacitive devices tested by this unit. Always make sure the DANGER indicator of high current
Product will be marked with this symbol (ISO#3864) when it is necessary for the user to
refer to the instruction manual in order to prevent injury or equipment damage.
Product marked with this symbol (IEC417) indicates presence of direct current.
Product will be marked with this symbol (ISO#3864) when voltages in excess of 1000V
are present.
www.valuetronics.com
QuadTech, Inc., 1997
Domestic Sales
For additional contact information please visit our website
www.quadtech.com
misinterpretation of any procedures in this publication.
is not on when connecting or disconnecting the device under test.
Ground Bond Tester
Instruction Manual
800-253-1230
WARNING
Sentry 50
Form
150285/A8

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Summary of Contents for QuadTech Sentry 50

  • Page 1 The material in this manual is for informational purposes only and is subject to change, without notice. QuadTech assumes no responsibility for any error or for consequential damages that may result from the misinterpretation of any procedures in this publication.
  • Page 2 Page 2 of 41 www.valuetronics.com...

  • Page 3: Table Of Contents

    Contents Warranty ............................5 Specifications ............................7 Accessories ............................9 Safety Precautions ...........................11 Condensed Operating Instructions ....................13 Introduction - Section 1 Unpacking and Inspection .....................15 Product Overview .........................15 Controls and Indicators ......................16 1.3.1 Front Panel Controls and Indicators .................16 1.3.2 Rear Panel Controls and Connectors ................18 Installation ..........................19 1.4.1 Dimensions .......................19 1.4.2 Instrument Positioning ....................19...
  • Page 4 Page 4 of 41 www.valuetronics.com...

  • Page 5: Warranty

    SERVICE POLICY QuadTech’s service policy is to maintain product repair capability for a period of at least five (5) years after original shipment and to make this capability available at the then prevailing schedule of charges.
  • Page 6 Page 6 of 41 www.valuetronics.com...

  • Page 7: Specifications

    , 4 digits, Hi Limit Ω Ω Accuracy: (1% of reading + 5 counts) ± Sentry 50 Resistance Specification Range Offset Function: 0 to 100mohm offset, user selectable Test Time: 0.1 - 999sec ( 20ms) for I < 25A AC ±...
  • Page 8 • G14 Power Entry Adapter • G15 Ground Continuity Lead Set • G16 International Power Strip • G25 Corded Product Adapter (240V) • Ordering Information: Description Catalog Number Sentry 50 Ground Bond Tester Sentry 50 Page 8 of 41 www.valuetronics.com...

  • Page 9: Accessories

    Accessories Accessories Included Item Quantity QuadTech P/N U.S. AC Power Cable (3-prong) 4200-0300 Ground Continuity Lead Set 5A 250V Line Fuse Instruction Manual 150285 Calibration Certificate Accessories/Options Available Item Quantity QuadTech P/N Foot Switch Interconnect Cable (To Sentry 10/20/30 & 15/25/35)
  • Page 10 Page 10 of 41 www.valuetronics.com...

  • Page 11: Safety Precautions

    Safety Precautions WARNING The Sentry Ground Bond Tester can provide an output current as high as 30A AC to the external device under test (DUT). Although the Sentry unit is designed with full attention to operator safety, serious hazards could occur if the instrument is used improperly and these safety instructions are not followed.
  • Page 12 Page 12 of 41 www.valuetronics.com...

  • Page 13: Condensed Operating Instructions

    The Sentry unit can be operated from a power source between 90 and 250VAC at a power line frequency of 50 or 60Hz. The Sentry 50 unit is shipped from QuadTech with a 5A fuse in place for AC 100-240V operation. The Sentry 50 unit is shipped with the line voltage selector set for 120V.
  • Page 14 Condensed Operating Instructions Zeroing/Offset After setting the test parameters, zero the Sentry unit by using the automatic offset. Make sure the black cables are connected to the Sentry LOW (Drive-, Sense-) terminals and the red test cables are connected to the Sentry HIGH (Sense+, Drive+) terminals and the clips shorted. Press [ENTER] key twice.

  • Page 15: Section 1: Introduction

    The Sentry 50 instrument can be programmed for an output current up to 30 amps and for high/low resistance measurement limits between 0.1mΩ and 510mΩ. The instrument also provides memory for internal storage of 10 test setups and remote control capability with start/stop inputs and pass/fail outputs.

  • Page 16: Controls And Indicators

    Controls and Indicators 1.3.1 Front Panel Controls and Indicators Figure 1 illustrates the controls and indicators on the front panel of the Sentry 50 Ground Bond Tester. Table 1-1 identifies them with description and function. Figure 1-2: Sentry 50 Front Panel Controls and Indicators...
  • Page 17 Table 1-2: Front Panel Controls and Indicators (Continued) Reference Name Type Function Number Figure 1-1 PASS, FAIL, SEC Green & Red LEDs When lit, indicates unit for test time (SEC) and P/F result based on entered limits. POWER White push-button Apply AC power: Push IN=ON, OUT=OFF STOP Red push-button...

  • Page 18: Rear Panel Controls And Connectors

    1.3.2 Rear Panel Controls and Connectors Figure 1-2 illustrates the controls and connectors on the rear panel of the Sentry 50 Ground Bond Tester. Table 1-2 identifies them with description and function. Figure 1-3: Rear Panel Controls and Connectors Table 1-2: Rear Panel Connectors and Controls...

  • Page 19: Installation

    1.4.3 Power Requirements The Sentry 50 instrument can be operated from a power source of 90 to 130 VAC or 200 to 250 VAC. Power connection is via the rear panel through a standard receptacle. Before connecting...
  • Page 20 Figure 1-5 illustrates the voltage selector switches located on the rear panel of the Sentry 50 instrument. Figure 1-6 illustrates the fuse drawer also located on the rear panel of the Sentry 50 instrument. Figure 1-5: Voltage Selector Switches Rear Panel Sentry 50 Instrument...

  • Page 21: Safety Inspection

    Refer to paragraph 1.4.3. The Sentry instrument is shipped with a standard U.S. power cord, QuadTech P/N 4200-0300 (with Belden SPH-386 socket or equivalent, and a 3-wire plug conforming to IEC 320). CE units are shipped with an approved international cord set.
  • Page 22 www.valuetronics.com...

  • Page 23: Section 2 : Operation

    Connect the instrument power cord to the source of proper voltage. The instrument is to be used only with three wire grounded outlets. Power is applied to the Sentry 50 by pressing the [POWER] button on the front panel. WARNING DO NOT TURN INSTRUMENT POWER ON OR OFF WITH TEST DEVICES CONNECTED.

  • Page 24: Instrument Zeroing/Offset

    Instrument Zeroing/Offset The Sentry 50 provides automatic zeroing/offset for lead or fixture effects. During the zeroing/offset process a correction is made (subtracted out) and stored in instrument memory to be applied to ongoing measurements. For maximum measurement accuracy it is recommended that the unit be zeroed after power-up and any time the test leads or fixture is changed.

  • Page 25: Connection To Device Under Test

    Connection to Device Under Test Before connecting to the test device press the [STOP] key and make sure the red DANGER light is not on. Connect the black leads of the G15 Lead Set to the front panel connectors (lug terminal to Drive- and banana plug to Sense-).

  • Page 26: Measurement Procedure

    Measurement Procedure Once the instrument has been powered up, the offset function implemented and the device under test connected, testing can begin. The operator has the choice of performing a test at power-up conditions (test conditions at which the instrument was last powered down), or recalling one of 10 possible stored setups.

  • Page 27: Programming Sequential Tests

    The display as illustrated in Figure 2-4 indicates the unit has exceeded the upper measurement limit for resistance. Figure 2-4: Over Range Display To recall one of the ten setups proceed as follows: Press the [RECALL] key. • Arrow [UP ] or arrow [DOWN ] to the setup number desired.

  • Page 28: Programming Test Parameters

    Programming Test Parameters Figure 2-5: Test Parameters With the instrument in standby status ([STOP] button previously pressed and no lights flashing) press the [UP ] key or [DOWN ] key to select the test step to be programmed, refer to paragraph 2.5 (UP arrow is step #1 and DOWN arrow step #2).

  • Page 29: Special Function Key Lock

    WARNING EXTREME CAUTION MUST BE USED BY THE OPERATOR, IN CONTINUOUS MODE, HIGH CURRENT IS APPLIED TO THE TEST TERMINALS UNTIL THE STOP BUTTON IS DEPRESSED OR PROGRAMMED LIMITS ARE EXCEEDED. After the final test condition entry the instrument returns to the blinking test mode (AC). Press [PROG] key to return to standby status, and thus ready for testing.

  • Page 30: Software Version Display

    • 2.10 Fail Continuous Mode When activated the Sentry 50 provides a continuous test mode where the test current does not shut down on a fail condition. WARNING THIS MODE IS NOT RECOMMENDED AS A NORMAL OPERATING MODE. (On the remote control...

  • Page 31: Beeper Setup Mode

    To exit the fail continuous setup mode press [ENTER] three times (exits through the Beep • On/Off setup mode and the Output Voltage setup mode) The fail continuous mode will remain on until turned off by pressing the [ENTER] key three •...

  • Page 32: Voltage Limit

    2.12 Voltage Limit The voltage limit (open circuit) is programmable from 6.0 to 15 VAC in 0.1 V steps. Proceed as follows to change the voltage limit: With the instrument in the power-up state, Press [ENTER] key three times. • Press [DOWN ] key once, display should read FAIL Cont and On or OFF.
  • Page 33 Figure 2-8 illustrates the timing diagram for remote operation of the Sentry 50 Ground Bond tester. Figure 2-8: Timing Diagram Operation Page 33 of 41 www.valuetronics.com...

  • Page 34: Use With Sentry 10/20/30 Or 15/25/35

    The Sentry 50 can be connected to a Sentry 10/15, 20/25 or 30/35 for complete product testing (ground bond and hipot) with the push of one button. When the Sentry 50 completes a test with a pass indication it can remotely start the Sentry 10/20/30 hipot Tester.
  • Page 35 Figure 2-9 illustrates the connection of the Sentry 50 Ground Bond Tester to a Sentry 35 Hipot Tester and a G13 Corded Product Adaptor. Figure 2-9: Interconnection with G13 Corded Product Adaptor NOTE: When performing zero offset with these units, the device under test (DUT) must be disconnected from the G13 and the G15 cable connected to the ground on the G13.

  • Page 36: G16 International Power Strip

    Norway Finland Sweden Germany Netherlands Austria Switzerland Italy Refer to Figure 2-10 for connection of the G16 International Power Strip to the Sentry 50 Ground Bond Tester. Figure 2-10: G16 International Power Strip Connection Page 36 of 41 Operation www.valuetronics.com...

  • Page 37: General

    Service Lab and will serve as a reference number for the time your unit is at QuadTech. Please contact our Customer Care Center (CCC) at 800-253- 1230 for additional support. The CCC phone line is staffed from 8:00am to 5:00pm (EST).

  • Page 38: Calibration Procedure

    7. Press [STOP], [START]. Note the measurement readout on the unit and press [UP], [DOWN] until this reading agrees with the voltage reading on the voltmeter. For example: if the voltmeter reads 3.413 mV use the UP/DOWN keys to make the Sentry 50 read the same (3.413).
  • Page 39 12. Press [STOP], [START]. Note the measurement readout on the unit and press [UP], [DOWN] until this reading agrees with the voltage reading on the voltmeter. For example: if the voltmeter reads 27.58 mV use the UP/DOWN keys to make the Sentry 50 read the same (27.58).
  • Page 40 17. Press [STOP], [START]. Note the measurement readout on the unit and press [UP], [DOWN] until this reading agrees with the voltage reading on the voltmeter. For example: if the voltmeter reads 0.061V use the UP/DOWN keys to make the Sentry 50 read the same (0.061).
  • Page 41 22. Press [STOP], [START]. Note the measurement readout on the unit and press [UP], [DOWN] until this reading agrees with the voltage reading on the voltmeter. For example: if the voltmeter reads 2.980V use the UP/DOWN keys to make the Sentry 50 read the same (2.980).

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