Seaward Sentinel Series Operating Instructions Manual
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Seaward Sentinel Series Operating Instructions Manual

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Sentinel Series Safety Tester
Operating Instructions
Seaward Electronic Ltd
Bracken Hill, South West Industrial Estate,
Peterlee, Co. Durham. SR8 2SW. England.
Tel: +44 (0)191 586 3511 Fax: +44 (0)191 586 0227
www.clare.co.uk
sales@clare.co.uk
service@seaward.co.uk

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  • Page 1 Sentinel Series Safety Tester Operating Instructions Seaward Electronic Ltd Bracken Hill, South West Industrial Estate, Peterlee, Co. Durham. SR8 2SW. England. Tel: +44 (0)191 586 3511 Fax: +44 (0)191 586 0227 www.clare.co.uk sales@clare.co.uk service@seaward.co.uk...
  • Page 2 Sentinel Test Instrument Operating Instructions Limited Warranty & Limitation of Liability Seaward Electronic Ltd guarantees this product for a period of 1 year. The period of warranty will be effective at the day of delivery. © Copyright 2014 All rights reserved. Nothing from this edition may be...
  • Page 3 Sentinel Test Instrument Operating Instructions This product has been designed and manufactured with high quality materials and components that can be recycled and reused. When the crossed out wheelie bin symbol is attached to a product it means the product is covered by the European Directive 2012/19/EU.
  • Page 4 EMC and Safety Standards. The product identified above conforms to the requirements of Council Directive 2004/108/EC and 2006/95/EC. This conformity is indicated by the symbol i.e. “Conformite Europeenne”. Seaward Electronic registered under ISO9001:2000 Certificate No: Q05356.

  • Page 5: Table Of Contents

    Sentinel Test Instrument Operating Instructions Contents User Notes ..............7 Safety Notes ............... 8 Workplace Precautions and Safety Checks ......9 Operating Precautions ............10 Accessories ............... 11 Standard Accessories ............11 Description ..............11 Front Panel ................. 12 Rear Panel ................14 Environmental Conditions .........
  • Page 6 Sentinel Test Instrument Operating Instructions Automatic Test Results............47 Common Utility Settings ............. 48 Common Utility – Display Options ........49 Common Utility – Buzzer Settings ........49 Common Utility – Interface Settings ........49 Common Utility – Control Settings ........50 External Control Options ...........

  • Page 7: User Notes

    Sentinel Test Instrument Operating Instructions User Notes These operating instructions are intended for the use of competent personnel. The Sentinel Test Instrument has been designed to operate in a dry environment. The following symbols are used in these operating instructions. Warning of electrical danger! Indicates instructions must be followed to avoid danger to persons.

  • Page 8: Safety Notes

    Sentinel Test Instrument Operating Instructions Safety Notes The Sentinel Test Instrument has been built and tested in accordance with: BS EN 61010 part 1 BS EN 61557 part 1 and 2 BS EN 61326 The Sentinel Test Instrument has left the factory in a perfectly safe state.

  • Page 9: Workplace Precautions And Safety Checks

    Sentinel Test Instrument Operating Instructions Workplace Precautions and Safety Checks The Sentinel series instruments are capable of the output of dangerous voltages. This section describes precautions and procedures that should be followed in order to create a safe working environment Only competent personnel should be allowed to •...

  • Page 10: Operating Precautions

    When DC Dielectric Withstand Testing is performed, • the Equipment under Test (EUT), Test Leads and probes become highly charged. The Sentinel series of Test Instruments are equipped with circuitry to discharge the EUT after each test. The time required to discharge is dependant upon the EUT and the test voltage.

  • Page 11: Accessories

    500VA transformer. The Sentinel Series Test Instruments can store up to 100 manual tests, as well as run up to 16 manual tests sequentially as an automatic test, allowing the safety testers to...

  • Page 12: Front Panel

    Sentinel Test Instrument Operating Instructions Front Panel Sentinel 200/500 Sentinel 501 1. On/Off switch - Powers the internal electronics. 2. Start button - Used for starting tests whilst in READY status, and also to put the instrument into TEST status. 3.
  • Page 13 Sentinel Test Instrument Operating Instructions 4. Remote Terminal – Used to connect a remote controller, for external Start / Stop conditions for example. 5. Configuration Keys – Comprising of Utility Key – Used to enter the Manual (MANU) utility or the Common Utility menus. Edit / Save Key –...

  • Page 14: Rear Panel

    Sentinel Test Instrument Operating Instructions 13. Pass / Fail Indicators – Used to advise the test status at the end of manual or automatic tests 14. Function Keys – The function keys offer different options dependant upon the currently active screen. Offer short cuts to various options.
  • Page 15 Sentinel Test Instrument Operating Instructions Sentinel 500 Sentinel 501 Signal I/O Port – Used to Monitor the Test Status (PASS, FAIL & TEST), and input signals (START and STOP). It is also used as part of the Interlock Key USB A Socket – Used for Remote Control RS232 Interface - Used for Remote Control and Firmware updates Fan / Cooling Vents –...

  • Page 16: Environmental Conditions

    Sentinel Test Instrument Operating Instructions Earth Connection –Used for connection of the (GND) Terminal to an Earth connection Line Voltage Fuse – Line voltage Selector and fuse Sentinel 200: 100V/120V T5A 250V 220V/230V T2.5A 250V Sentinel 500: 100V/120V T10A 250V 220V/230V T6.3A 250V Line Voltage Input –...

  • Page 17: Electrical Specifications

    Sentinel Test Instrument Operating Instructions The Sentinel can be stored at any temperature in the range - 10ºC to +70ºC (relative humidity up to 85%). Supply rating is specified as 100/120/220/230V AC±10% at 50/60Hz Electrical Specifications Please Note – The specifications below apply when the Sentinel Test Instrument has been powered on for at least 30 minutes at temperature 15°C~35°C.

  • Page 18: Dc Dielectric Withstand Test

    Sentinel Test Instrument Operating Instructions Current Measurement Sentinel 200 Accuracy ±(1.5% of reading +30 counts) when HI SET <1.00mA ± (1.5% of reading +3 counts) when HI SET ≥1.00mA Sentinel 500 / 501 ± (1.5% of reading +30 counts) when HI SET <1.11mA ±...

  • Page 19: Earth Bond Test (Sentinel 501)

    Sentinel Test Instrument Operating Instructions 0.001mA(0.001mA~1.100mA) 0.01mA(01.11mA~11.00mA) 0.1mA(011.1~020.0mA) Current Measurement Sentinel 200 Accuracy ± (1.5% of reading +30 counts) when HI SET <1.00mA ± (1.5% of reading +3 counts) when HI SET ≥1.00mA Sentinel 500 / 501 ± (1.5% of reading +30 counts) when HI SET <1.11mA ±(1.5% of reading +3 counts) when HI SET ≥1.11mA...

  • Page 20: Insulation Resistance Test (Sentinel 501)

    Sentinel Test Instrument Operating Instructions Window Comparator Method Yes TIMER (Test Time) 0.5S~999.9S Insulation Resistance Test (Sentinel 501) Output Voltage 50 – 1000V Output Voltage Resolution Output Voltage Accuracy (1% of setting +5V) with no load Measurement Range 1M - 50G Test Voltage Measurment Range Accuracy...
  • Page 21 Sentinel Test Instrument Operating Instructions Table 1a: Output Limitation when Testing (Sentinel 200) Upper Current Pause Output Time At least as long as the output Maximum 240 30mA≤I≤40mA time seconds Continuous output 0.001mA≤I<30mA Not necessary possible Continuous output 0.001mA≤I≤10mA Not necessary possible NOTE: Output Time = Ramp Time + Test Time.

  • Page 22: Operation

    Sentinel Test Instrument Operating Instructions Operation Test Lead Connection This section shows the correct method for connection of the Sentinel test instrument to the EUT. For Dielectric Withstand and Insulation Resistance testing the test leads are connected as shown; Ensure the Sentinel Test Instrument is switched off prior to connection of Test leads Connect the (Red) High Voltage test lead to the High Voltage Terminal and screw the connector into place.

  • Page 23: Instrument Set Up

    Sentinel Test Instrument Operating Instructions The thicker cables represent the current Source leads and should be connected to the lower terminals marked Source. The voltage Sense leads should be connected to the upper terminals marked sense Instrument Set Up Before powering up your Sentinel test instrument, ensure the correct line voltage has been selected on the rear panel.

  • Page 24: Test Screen And Menu Navigation

    Sentinel Test Instrument Operating Instructions Whilst powering up, all 5 LED indicators will light, check to ensure all are working. The instrument will perform a System Self Test whilst initialising, check to ensure there are no errors. If errors are found, please contact our service department for help After Self Test, the unit will proceed into VIEW Status and is ready for use.
  • Page 25 Sentinel Test Instrument Operating Instructions Ramp Up Time 10. Test Type Selections 11. Test Voltage 12. Test Frequency The menu structure for the Sentinel is shown below. There are two main test modes, Manual (MANU) and Automatic (AUTO), along with 5 main operational statuses, VIEW, READY, EDIT, TEST and STOP Notes 1 Press EDIT/SAVE to save settings or ESC to cancel and...
  • Page 26 Sentinel Test Instrument Operating Instructions VIEW Status – Used to view the parameters of the selected manual or automatic test. From this status the Sentinel can be placed into Manual or Automatic Mode EDIT Status – Used to edit both the manual and automatic test parameters.

  • Page 27: Manual Test Mode

    Sentinel Test Instrument Operating Instructions PAGE VIEW – Shows which manual tests are being used to create an automatic test sequence. The steps can be rearranged or deleted within this screen COMMON UTILITY – Allows for changes to system wide settings including LCD, Buzzer, Interface and Control Settings MANU UTILITY –...
  • Page 28 Sentinel Test Instrument Operating Instructions Whilst in Edit mode, firstly choose the Test function to • be performed using the test function soft keys beneath the LCD screen. The selected test function will become highlighted. Using the UP/Down keys, move the cursor to the •...

  • Page 29: Manual Test Utilities

    Sentinel Test Instrument Operating Instructions To set the ramp time use the UP/DOWN keys until the • cursor is below the Ramp time and use the wheel to set the desired ramp time. A Test name can be set if desired with a maximum of 10 •...
  • Page 30 Sentinel Test Instrument Operating Instructions From the MANU UTILITY menu use the UP/DOWN arrows to scroll to ARC MODE then use the scroll wheel to select the required option. If choosing either of the ON options the ARC current level can be set. Note the ARC Setting range is directly related to the HI SET current limit Sentinel 200 AC Dielectric Withstand...
  • Page 31 Sentinel Test Instrument Operating Instructions Pass Hold The Pass hold settings only apply to the selected test when performed as part of an AUTO test. When activated this setting will hold a PASS judgement until the start button is pressed. This feature is ignored in MANU mode.
  • Page 32 Sentinel Test Instrument Operating Instructions For Insulation Resistance and Ground Bond Tests the GROUND MODE is always set to OFF. Ground Mode = ON, EUT Grounded Sentinel Ground Mode = ON, EUT Floating Ground Mode = OFF, EUT Floating Earth Bond Testing...
  • Page 33 Sentinel Test Instrument Operating Instructions Ground Mode = OFF, EUT Grounded Earth Bond Testing When Ground Mode is set to OFF, the EUT, fixtures or connected instrumentation cannot be earthed. This will short circuit the internal circuitry during a test. If it is not known whether the EUT test setup is earthed or not, always set the Ground Mode to To set the Ground Mode, from the MANU UTILITY screen use the UP/DOWN arrows to highlight Ground Mode setting and...

  • Page 34: Saving Manual Test Parameters

    Sentinel Test Instrument Operating Instructions Saving Manual Test Parameters At any point where all required parameters have been set, the Manual test can be saved. Once created, this test can be incorporated into an Automatic Test Sequence. Whilst in EDIT status, press the EDIT/SAVE button to save the current test.

  • Page 35: Pass / Fail Condition In Manual Test

    Sentinel Test Instrument Operating Instructions AC / DC Dielectric Withstand – Achieved Test Voltage and Measured Current. Insulation Resistance – Achieved Test Voltage and Measured Resistance (Sentinel 501). Earth Bond – Achieved Test Current and Measured Resistance (Sentinel 501). The test can be stopped manually at any time whilst running by simply pressing the STOP button.

  • Page 36: Test Lead Null For Earth Bond Test (Sentinel 501)

    Sentinel Test Instrument Operating Instructions As soon as a test is judged to have failed, the Sentinel will cut off the test output to the terminals. The FAIL judgement is held on the display until the STOP button is pressed. Pressing the STOP button will return the Sentinel to READY status.

  • Page 37: Special Manu Mode 000 (Sentinel 500 & 501)

    Sentinel Test Instrument Operating Instructions revert to VIEW status and the resistance of the test leads will be automatically set into the reference (REF#) value. During Zero Function After Zero Function Special MANU Mode 000 (Sentinel 500 & 501) Special Manual Mode can be accessed by selecting MANU Test number 000.

  • Page 38: Turning Off Timer Setting

    Sentinel Test Instrument Operating Instructions clockwise to decrease the test voltage. Please note, the test current cannot be altered therefore test judgements will be as per the set current. Turning off Timer Setting Whilst setting the test time in as described in x.x.x the test time can be set to OFF when performing AC or DC Dielectric Withstand Tests.
  • Page 39 Sentinel Test Instrument Operating Instructions Test Graph Items vs Time AC Dielectric Withstand Test Voltage, Test Current (V,I) DC Dielectric Withstand Test Voltage, Test Current (V,I) Test Voltage, Test Resistance (V,R) Earth Bond Test Current, Test Resistance (I,R) If required the start time of the Sweep function can be set. Whilst in the VIEW mode press the STA.t button, and use the scroll wheel to select a time.

  • Page 40: Automatic Test Mode

    Sentinel Test Instrument Operating Instructions Primary Item – Output Voltage (AC/ DC Dielectric Withstand, IR) or Output Current (Earth Bond Test). Displayed as Line Graph and Digital Display Secondary Item – Test Current (AC / DC Dielectric Withstand) or Measured Resistance (IR and Earth Bond).

  • Page 41: Editing Automatic Test Sequences

    Sentinel Test Instrument Operating Instructions From the view mode use the scroll wheel to select the required automatic (AUTO) test sequence number, ranging from 001 to If the automatic test has not yet been configured, the screen will be blank except for the Mode, Status and Test name. Editing Automatic Test Sequences In order to edit an automatic test, the Sentinel must be placed into EDIT status.

  • Page 42: Adding A Manual Test

    Sentinel Test Instrument Operating Instructions Adding a Manual Test Up to 16 Manual (MANU) tests can be added into an automatic sequence, with each step being added in sequential order. Press the DOWN arrow key to move the cursor to the MANU number on the display and use the scroll wheel to select the required manual test.

  • Page 43: Saving The Automatic Test Sequence

    Sentinel Test Instrument Operating Instructions Character List Saving the Automatic Test Sequence Once all the required tests have been added and the Test Name completed the sequence can be stored to memory. The Sentinel will be in the EDIT status, simply press the EDIT/ SAVE key to store the AUTO test, after which the Sentinel is returned to VIEW status.

  • Page 44: Moving A Test From Page View

    Sentinel Test Instrument Operating Instructions Moving a Test from Page View A test can be moved from its current position to another free slot. Using the directional keys move the cursor to the required test to be moved and press the MOVE soft key to select the test.

  • Page 45: Skipping A Test Step From Page View

    Sentinel Test Instrument Operating Instructions Skipping a Test step from Page View If a Manual test step is not required it can be skipped so that it is not performed during the sequence but saved for future use if required. Using the directional keys move the cursor to the required first test to be skipped and press the SKIP soft key to select the test.

  • Page 46: Performing An Automatic (Auto) Test Sequence

    Sentinel Test Instrument Operating Instructions Performing an Automatic (AUTO) Test Sequence During testing DO NOT touch the EUT, Test Leads or Terminals. To perform an automatic test sequence the Sentinel must firstly be in VIEW mode. Use the scroll wheel to select the required AUTO test number.

  • Page 47: Automatic Test Results

    Sentinel Test Instrument Operating Instructions In order to progress and perform the next test in the sequence, press the START button. Alternatively press the Stop button to cancel all remaining tests. The STOP button can also be pressed at any time during the test process to halt testing.

  • Page 48: Common Utility Settings

    Sentinel Test Instrument Operating Instructions failed the Red FAIL LED will illuminate, and if configured, a buzzer will sound, the entire test will be judged as a FAIL. To view the individual results of each step turn the scroll wheel clockwise from the overview table to scroll through each test in the sequence.

  • Page 49: Common Utility - Display Options

    Sentinel Test Instrument Operating Instructions Common Utility – Display Options Press the soft key labelled LCD to configure both the contrast and brightness of the LCD display. Use the UP/DOWN arrow keys to select between LCD Contrast and LCD Brightness and use the scroll wheel to set the desired level LCD Contrast 1(Low) –...

  • Page 50: Common Utility - Control Settings

    Sentinel Test Instrument Operating Instructions If RS232 or GPIB are chosen use the UP/DOWN arrow keys to select Baud Rate or Address respectively. Use the scroll wheel to select the required baud rate or GPIB Address, ensuring that they match the host machine. Baud 9600,19200,38400,57600,115200 GPIB Address...

  • Page 51: External Control Options

    Sentinel Test Instrument Operating Instructions Press EDIT / SAVE to store the settings and return to VIEW status. External Control Options This section describes how to use the Remote Terminal Connection and the Signal I/O port. Remote Terminal The remote terminal connector is a standard 5-Pin DIN terminal, suitable for a remote controller for remotely sending START and STOP conditions to the Sentinel.

  • Page 52: Signal I/O Port

    Sentinel Test Instrument Operating Instructions High Level Input Voltage 2.4-3.3V Low Level Input Voltage 0 - 0.8V Input Period Minimum of 1ms Signal I/O Port The Signal I/O port has three main functions, the Interlock, Remotely Start and Stop for tests and test status monitoring. The supplied interlock key already has the required pins shorted together.
  • Page 53 Sentinel Test Instrument Operating Instructions Input Connection Output Connection Input Signal Properties High Level Input Voltage 5V-32V Low Level Input Voltage 0V-1V Maximum of - Low Level Input Current Minimum of Input Period Output Signal Properties Output Type Relay form A Output Rated Voltage 30VDC Maximum output current...

  • Page 54: Remote Control

    Sentinel Test Instrument Operating Instructions Remote Control The following section describes the basic configuration of the Sentinel based on IEEE488.2 commands. The remote interface supports USB, RS232 and GPIB (Option). To enable any Remote Control method, use instructions provided on page (XX) When placed into Remote Control mode the Sentinel will change Status to display RMT as below;...

  • Page 55: Interface Configuration - Usb

    Ensure the interface type is set to USB from the Common Utility Menu. GPIB Configuration The GPIB Connection is an optional accessory, please contact your Seaward representative for details. GPIB Address 0-30 Ensure the interface type is set to GPIB from the Common Utility Menu.

  • Page 56: Command Syntax

    Sentinel Test Instrument Operating Instructions Command Syntax Compatible Standard IEEE488.2 Partial compatibility SCPI, 1999 Partial compatibility Command Structure SCPI commands follow a tree-like structure, organized into nodes. Each level of the command tree is a node. Each keyword in an SCPI command represents each node in the command tree.

  • Page 57: Command Forms

    Sentinel Test Instrument Operating Instructions Command Forms Commands and queries have two different forms, long and short. The command syntax is written with the short form of the command in capitals and the remainder (long form) in lower case. The commands can be written in capitals or lower-case, just so long as the short or long forms are complete.

  • Page 58: System Commands

    Sentinel Test Instrument Operating Instructions Commands The following section describes and gives examples of the Commands that can be used with the Sentinel. System Commands The System Commands and associated page numbers for instructions are as follows; SYSTem:LCD:CONTrast SYSTem:LCD:BRIGhtness SYSTem:BUZZer:PSOUND SYSTem:BUZZer:FSOUND SYSTem:BUZZer:PTIMe SYSTem:BUZZer:FTIMe...

  • Page 59: System:buzzer:psound

    Sentinel Test Instrument Operating Instructions Parameter / Return Parameter <NR1> 1, 2 Example SYSTem:LCD:BRIG 2 Sets the display brightness to bright SYSTem:BUZZer:PSOUND This command turns the buzzer sound on or off for a PASS judgement. Syntax SYSTem:BUZZer:PSOUND {ON/OFF} Query syntax SYSTem:BUZZer:PSOUND ? Parameter / Return Parameter...

  • Page 60: System:buzzer:ftime

    Sentinel Test Instrument Operating Instructions Parameter / Return Parameter <NR2> 0.2-999.9 Example SYST:BUZZ:PTIM 1.5 Turns the Buzzer on for 1.5 seconds if test is a PASS SYSTem:BUZZer:FTIMe This command sets the time the buzzer is sounded for under a FAIL judgement Syntax SYSTem:BUZZer:FTIMe <NR2>...

  • Page 61: System:gpib:version

    Sentinel Test Instrument Operating Instructions Error Time Error REF Setting Error Frequency Setting Error DC Over 50W Sentinel 200 or ARC Setting Error 100W Sentinel RAMP Time Setting 500/501 Error TEST Time Setting GBV > 5.4V Error SYSTem:GPIB:VERSion This query questions the state of the GPIB connector Query syntax SYSTem:GPIB:VERSion ? Returns the GPIB...
  • Page 62 Sentinel Test Instrument Operating Instructions Turns the Test On Parameter Turns the Test Off TEST ON Test is On Return Parameter TEST OFF Test is Off Example FUNC:TEST ON Turns the test output On MEASure<x> The Measure command Returns the test parameters & results of the tester in either MANU or AUTO mode.

  • Page 63: Manual Test Commands

    Sentinel Test Instrument Operating Instructions MEAS ? >ACW, FAIL, 0.024kV, 0.023mA, Example (MANU) R=0.002S Returns the test results of the current test MEAS5 ? >DCW, FAIL, 0.124kV, 0.023mA, Example (AUTO) R=0.004S Returns the test results of Step 10 of the current AUTO test MAIN:FUNCtion This command changes the Test mode between AUTO and MANU modes.

  • Page 64: Manu:step

    Sentinel Test Instrument Operating Instructions MANU:IR:VOLTage MANU:IR:RHISet MANU:IR:RLOSet MANU:IR:TTIMe MANU:IR:REF MANU:GB:CURRent MANU:GB:RHISet MANU:GB:RLOSet MANU:GB:TTIMe MANU:GB:FREQuency MANU:GB:REF MANU:GB:ZEROCHECK MANU:UTILity:ARCMode MANU:UTILity:PASShold MANU:UTILity:FAILmode MANU:UTILity:MAXHold MANU:UTILity:GROUNDMODE MANU<x>:EDIT:SHOW MANU:STEP Sets the MANU test number Syntax MANU:STEP <NR1> Query syntax MANU:STEP ? Parameter / Return Parameter <NR1>...

  • Page 65: Manu:rtime

    Sentinel Test Instrument Operating Instructions Sets the MANU test name to "Test1" MANU:RTIMe Sets or returns the Ramp Time for the test in seconds. Note: A “TIME ERR” will result if the Ramp Time + Test Time is 240 seconds when the HI SET limit is over 30mA (Sentinel 200) or over 80mA (Sentinel 500/ 501).

  • Page 66: Manu:acw:voltage

    Sentinel Test Instrument Operating Instructions MANU:ACW:VOLTage Sets or returns the ACW voltage in kV. The test must first be in ACW mode before this command can be used. Syntax MANU:ACW:VOLTage <NR2> Query syntax MANU:ACW:VOLTage ? Parameter / Return Parameter <NR2> 0.100 - 5.000 (kV) Example MANU:ACW:VOLT 1.2...

  • Page 67: Manu:acw:ttime

    Sentinel Test Instrument Operating Instructions In the example above LO SET value1 will produce an error as all digits are outside the range of HI SET. LO SET value2 will not produce an error, but will return 0.05, not 0.053. Syntax MANU:ACW:CLOSet <NR2>...

  • Page 68: Manu:acw:frequency

    Sentinel Test Instrument Operating Instructions MANU:ACW:FREQuency Sets or returns the ACW test frequency in Hz. The test must first be in ACW mode before this command can be used. Syntax MANU:ACW:FREQuency {50/60} Query syntax MANU:ACW:FREQuency ? Parameter / Return 50 Hz Parameter 60 Hz Example...

  • Page 69: Manu:acw:arccurrent

    Sentinel Test Instrument Operating Instructions MANU:ACW:ARCCurrent Sets or returns the ACW ARC current value in mA. ARC must be enabled before the ARC current can be set. The test must first be in ACW mode before this command can be used. ARC current uses the same range as the HI SET value.

  • Page 70: Manu:dcw:closet

    Sentinel Test Instrument Operating Instructions Note: A “DC Over 50W” error will result if the DCW Voltage X HI SET value is > 50 watts. (Sentinel 200) Note: A “DC Over 100W” error will result if the DCW Voltage X HI SET value is >...

  • Page 71: Manu:dcw:ttime

    Sentinel Test Instrument Operating Instructions MANU:DCW:TTIMe Sets or returns the DCW test time in seconds. The test must first be in DCW mode before this command can be used. In special MANU mode, the TIMER can be turned off. Syntax MANU:DCW:TTIMe {<NR2>/OFF} Query syntax MANU:DCW:TTIMe ?

  • Page 72: Manu:ir:voltage

    Sentinel Test Instrument Operating Instructions ARC current is limited to 2X the HI SET value. Syntax MANU:DCW:ARCCurrent <NR2> Query syntax MANU:DCW:ARCCurrent ? Parameter / 1.000 – 20.00 Sentinel 200 Return 2.000 - 040.0 Sentinel Parameter <NR2> 500/501 Example MANU:DCW:ARCC 0.04 Sets the DC Dielectric Withstand ARC value to 0.04mA MANU:IR:VOLTage Sets or returns the DCW voltage in kV.

  • Page 73: Manu:ir:rloset

    Sentinel Test Instrument Operating Instructions MANU:IR:RLOSet Sets or returns the IR LO SET current value in G . The test must first be in IR mode before this command can be used. The LO SET value must be less than the HI SET Value. Syntax MANU:IR:RLOSet <NR1>...

  • Page 74: Manu:gb:current

    Sentinel Test Instrument Operating Instructions MANU:GB:CURRent Sets or returns the Earth Bond Current (GB) current in A. The test must first be in GB mode before this command can be used. Syntax MANU:GB:CURRent <NR2> Query syntax MANU:GB:CURRent ? Parameter / Return Parameter <NR2>...

  • Page 75: Manu:gb:rloset

    Sentinel Test Instrument Operating Instructions MANU:GB:RLOSet Sets or returns the GB HI SET current value in m . The test must first be in GB mode before this command can be used. The LO SET value must be less than the HI SET Value.

  • Page 76: Manu:gb:ref

    Sentinel Test Instrument Operating Instructions MANU:GB:REF Sets or returns the GB reference value in m . The test must first be in GB mode before this command can be used. The reference value must be less than the HI SET value. Syntax MANU:GB:REF <NR2>...

  • Page 77: Manu:utility:arcmode

    Sentinel Test Instrument Operating Instructions MANU:UTILity:ARCMode Sets or returns the ARC mode status for the current test. The ARC mode cannot be set for both IR and GB test functions. MANU:UTILity:ARCMode {OFF/ ON_CONT/ Syntax ON_STOP} Query syntax MANU:UTILity:ARCMode ? Parameter / ARC Mode is disabled Return ON_CONT...

  • Page 78: Manu:utility:failmode

    Sentinel Test Instrument Operating Instructions MANU:UTILity:FAILmode Sets or returns the Failure Mode setting for the current test. MANU:UTILity:FAILmode Syntax {CONT/HOLD/STOP} Query syntax MANU:UTILity:FAILmode ? Parameter / CONT Sets / Returns the fail mode as Return continue Parameter HOLD Sets / Returns the fail mode as hold STOP Sets / Returns the fail mode as...

  • Page 79: Sweep Commands

    Sentinel Test Instrument Operating Instructions MANU:UTILity:GROUNDMODE Sets or returns the Grounding Mode for the current test. The Ground Mode cannot be turned on for IR and GB Test functions. Syntax MANU:UTILity:GROUNDMODE {ON/OFF} Query syntax MANU:UTILity:GROUNDMODE ? Parameter / Return Turns GROUND MODE off Parameter Turns GROUND MODE on Example...
  • Page 80 Sentinel Test Instrument Operating Instructions SWEEP:DATA:STATus SWEEP<X>:DATA:SHOW SWEEP:GRAPh:SHOW SWEEP :GRAPh:LINE SWEEP:STARt:TIME SWEEP:DATA:STATus Returns the sweep mode, the voltage and current settings and the number data points that were used in the last sweep. There can be a maximum of 190 data points, depending on the testing time.

  • Page 81: Parameter / Return

    Sentinel Test Instrument Operating Instructions returned in the following format*: ACW MODE,CR+LF No.,V(kV),I(mA), T(S) ,CR+LF 001,0.071,0.032,0000.1,CR+LF 002,0.111,0.047,0000.2,CR+LF ………………………………… 013,0.601,0.215,0001.3,CR+LF *Where CR+LF is a carriage return and line feed code. Time is in seconds. Query syntax SWEEP<x>:DATA:SHOW ? Return <NR1> 1-190 (single data point) Parameter <x>...

  • Page 82: Auto Mode Commands

    Sentinel Test Instrument Operating Instructions SWEEP :GRAPh:LINE Sets or returns which lines are shown on the Sweep Graph. Syntax SWEEP:GRAPh:LINE {0/1/2/3} Query syntax SWEEP:GRAPh:LINE ? Parameter / Turns ALL lines off / all lines are Return Parameter Displays the graph line for the primary item, e.g.

  • Page 83: Example Manu:step

    Sentinel Test Instrument Operating Instructions AUTO:PAGE:DEL AUTO:NAME AUTO:EDIT:ADD TESTok:RETurn AUTO:STEP Sets or queries the AUTO number (Automatic Test Sequence Number) Syntax AUTO:STEP <NR1> Query syntax AUTO:STEP ? Parameter / Return Parameter <NR1> 1 - 100 Example AUTO:STEP 11 Sets the current AUTO number to 11 AUTO<x>:PAGE:SHOW Returns the Page View of the selected automatic test in the following format:...
  • Page 84 Sentinel Test Instrument Operating Instructions AUTO:PAGE:MOVE Moves the source step to a desired location Syntax AUTO:PAGE:MOVE <V1>,<V2> <V1> 1-16 (Source Step) Parameter <V2> 1 -16 (Destination Step) Example AUTO1:PAGE:MOVE 2,5 Moves the contents of Test Step 2 to Test Step 5 AUTO:PAGE:SWAP Swaps the source step with destination step.
  • Page 85 Sentinel Test Instrument Operating Instructions AUTO:PAGE:DEL Deletes the selected step from the AUTO test. The remaining steps move up to replace the deleted step. Syntax AUTO:PAGE:DEL <NR1> Parameter <NR1> 1-16 (Step Number) Example AUTO1:PAGE:DEL 3 Deletes the contents of step number 3 AUTO:NAME Sets or returns the AUTO name for the selected automatic test.
  • Page 86 Sentinel Test Instrument Operating Instructions TESTok:RETurn Allows “OK” to be displayed on the remote terminal when a test has stopped (PASS/FAIL or STOP). This applies for MANU and AUTO mode. By default, TESTok:RETurn is set to OFF. Syntax TESTok:RETurn {ON/OFF} Query syntax TESTok:RETurn ? Parameter /...

  • Page 87: Error Messages

    Sentinel Test Instrument Operating Instructions Common Commands *CLS *IDN *RMTOFF *CLS The *CLS Command clears the internal registers *IDN This queries the model, serial number and firmware version of the Sentinel. Query syntax *IDN ? Returns the instrument identification in the format Return Parameter <string>...

  • Page 88: 10.0 Frequently Asked Questions

    Sentinel Test Instrument Operating Instructions The below are the possible error messages returned from the SYST:ERR? Query are listed below; Error Code Description 0x14 Command Error 0x15 Value Setting Error 0x16 String Setting Error 0x17 Query Error 0x18 MODE Setting Error 0x19 Time Error 0x1A...

  • Page 89: 11.0 Error Messages

    11.0 Error Messages System Self Test The following error messages or messages may appear on the Sentinel screen during the Start-Up initialization. If any of these error messages appear on the please contact the Seaward service department Error Code Description...
  • Page 90 Sentinel Test Instrument Operating Instructions ~100mA (Sentinel 500/501), and if the RAMP time and TEST TIME setting is > 240S during AC Dielectric Withstand tests For DC Dielectric Withstand Tests, OVER 50W is OVER 50W displayed if the HI SET setting multiplied by the Sentinel 200 voltage is greater than 50W For DC Dielectric Withstand Tests, OVER 100W...

  • Page 91: 12.0 Cleaning And Maintenance

    Sentinel Test Instrument Operating Instructions 12.0 Cleaning and Maintenance Cleaning Use a soft cloth dampened in a solution of mild detergent and water. Do not use chemicals containing harsh material such as benzene, toluene, xylene and acetone. Always disconnect the power cord before cleaning. Replacing the Fuse To replace the fuse, firstly ensure the Sentinel is powered off, then remove the power cord.

  • Page 92: 13.0 Service And Calibration

    To maintain the specified accuracy of the measurement results, the instrument must be recalibrated at regular intervals by either the manufacturer or an authorised Seaward Service Agent. We recommend a recalibration period of one year For help or advice on Service and Calibration contact:...
  • Page 93 489A555 Rev 1...

This manual is also suitable for:

Sentinel 200Sentinel 500Sentinel 501489a910

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