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3M

™

Wrist Strap

and Ground Monitor 773

User’s Guide

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Содержание Wrist Strap and Ground Monitor 773

Страница 1: ...3M Wrist Strap and Ground Monitor 773 User s Guide ...

Страница 2: ...tions 10 4 0 Enabling or Disabling Monitoring of Ground Lines 11 5 0 Setting Impedance Alarm Levels 12 6 0 Verification Check 14 7 0 Functional Operations 15 Ground Resistance Monitor 15 Person Voltage and Resistance Monitor 15 8 0 Accessory Items 17 Replacement and Removing Input Wriststrap Dual Conductor Input Jack 17 9 0 Customer and Technical Service 18 10 0 Regulatory Information 18 ...

Страница 3: ...ion and use of the 3M Wrist Strap and Ground Monitor 773 Retain this guide for future reference Intended Use This user guide covers the Wrist Strap and Ground Monitor 773 The 773 monitor has two input jacks for monitoring impedance and voltage on a dual conductor wriststrap It monitors either one or two metal grounds in a workstation The monitor operates from a universal AC power adapter These sys...

Страница 4: ...damage Read understand and follow all safety information contained in this user guide for installation and use Retain this guide for future reference To reduce the risks associated with hazardous voltage which if not avoided could result in electrical shock related injury Replace power adapter if damaged with 3M provided power adapter only Do not modify or attempt to service the power adapter or u...

Страница 5: ...t 15 of the FCC Rules Operation is subject to the following two conditions 1 this device may not cause harmful interference and 2 this device must accept any interference received including interference that may cause undesired operation Note This equipment has been tested and found to comply with the limits for a Class A digital device pursuant to part 15 of the FCC Rules These limits are designe...

Страница 6: ...ut logic signal to a host equipment Ground Impedance Monitor Continuously monitors for ground impedance on one or two separate channels that are connected to one or two process tools The alarm level is set the same for all channels Output Signal An output signal is available for connecting to the tool s computer or PLC The 5V signal is either logic 1 or 0 for indicating the monitored ground resist...

Страница 7: ...he monitored grounds fail or a wriststrap fails or power to the unit is lost the output is logic 0 0V Person Voltage and Resistance Monitor The alarm level is monitored when a person is wearing a dual conductor wrist strap assembly and plugged into the front jack There is a short hold on the body voltage alarm so that it is not missed The unit will respond to either a positive or negative voltage ...

Страница 8: ... orange slot above Gently push inward and insert the stripped wire fully into the hole in the green connector Hold the wire fully in and release the screwdriver to allow the wire to catch Attach the ground wire to the GND connector on back of unit Attach the impedance monitor wire s to the chosen ground lines G1 G2 connector s on the back of the unit Insert the wire as described above If you are p...

Страница 9: ...t orientation of the front and back covers If you wish to change the orientation rotate the printed circuit board and covers 180 degrees This will allow the unit housing to be mounted from the wider plate with screw slots Undo the screws on the back and front panels using a Philips screwdriver 1 pull out the internal board with the wrist strap jack attached flip it 180 degrees insert it back into ...

Страница 10: ...ess tools and wrist strap monitoring Alarm Indicators Visual Indication LED Audible Green OK Red Fault Condition Note Operator LEDs red or green will not illuminate if wrist strap is not plugged into jack Buzzer fault condition if enabled is ON Operating Environmental Range Temperature 50 F 10 C to 110 F 43 C Humidity 75 R H Maximum Dimensions 2 4 in W x 0 85 in H x 2 25 in L 61 mm x 22 mm x 59 mm...

Страница 11: ...hat will be unused Press and hold the Set button using the unbent end of a paper clip While the button is pressed inward plug in the AC Adapter and then release the Set button Wait then for 30 seconds The 3M Wrist Strap and Ground Monitor 773 will beep during this time After this it will produce one beep and will automatically disable the lines to which nothing was connected You can repeat this pr...

Страница 12: ...pressing the Set button until the impedance level is matched as shown in the table on page 13 When the beeping stops the left most four LED allow for setting of resistance value G1 G2 red LEDs are upper location and G1 G2 green LEDs are lower Select the ground resistance value by repeatedly pressing the Set button to advance the resistance limit This will turn the LEDs on or off as indicated in th...

Страница 13: ...13 Using LEDs on Front of Unit to Set Resistance Alarm Level Resistance Ohms LED Resistance Ohms LED 1 9 2 10 3 12 4 14 5 16 6 18 7 20 8 ...

Страница 14: ...ress the Fail button on the checker The red LED of the corresponding ground of the monitor should remain on Press the Pass button on the checker the corresponding light on the monitor should be green Repeat these steps for all enabled ground monitoring inputs The checker verifies the proper operation of dual wrist strap monitoring Connect a 3 5 mm test cable to both the checker and to the operator...

Страница 15: ...lug the dual conductor ground cord of the wrist strap into the jack on the front of the unit If the wrist strap is worn properly a green LED will come on otherwise red LED will be on In order to provide good ground connection the wrist strap must be worn tightly and the green light on the 3M Wrist Strap and Ground Monitor 773 is an indication of that If for whatever reason while properly connected...

Страница 16: ...16 Connecting the 3M Wrist Strap and Ground Monitor 773 Unit ...

Страница 17: ...nput jack begins to show wear after heavy usage the input jack can be replaced by ordering input jack part number above Remove the input jack in the unit by removing the locking collar and two screws on front cover Slide the printed circuit board outside of the unit and unplug the pin connector with input jack board Plug in new input jack board assembly and carefully slide the board back into the ...

Страница 18: ... for Concentration Limits for Certain Hazardous Substances in Electronic Information Products This symbol per Marking for the Control of Pollution Caused by Electronic Information Products SJ T11364 2006 means that the product or part does contain a substance as detailed in the chart below in excess of the following maximum concentration values in any homogeneous material a 0 1 by weight for lead ...

Страница 19: ...o or arising out of this certification including the use misuse or inability to use the product Unless stated otherwise in writing the foregoing language cannot be waived modified or supplemented in any manner whatsoever 产品中有毒有害物质或元素的名称及含量 Name and Content of Hazardous Substances or Elements 部件名称 Part or Component Name 有毒有害物质或元素 Hazardous Substances or Elements 铅 Pb 汞 Hg 镉 Cd 六价铬 Cr VI 多溴联苯 PBB ...

Страница 20: ...y statements contained on your purchase order shall have no force or effect unless expressly agreed upon in writing by an authorized officer of 3M Warranty Limited Remedy Limited Liability This product will be free from defects in material and manufacture for a period of one 1 year from the time of purchase 3M MAKES NO OTHER WARRANTIES INCLUDING BUT NOT LIMITED TO ANY IMPLIED WARRANTY OF MERCHANTA...

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