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MESTA ELECTRONICS, INC. 

 

 

 

U

ninterruptible 

P

ower 

S

upply 

 

Owner's Manual 

MODELS:

 UPS500-43,UPS750-43,  

UPS750-83, UPS1000-83, UPS1250-84 

11020 Parker Drive 

§

 N. Huntingdon, PA  15642 

412/754-3000

 

SAVE THESE INSTRUCTIONS - THIS MANUAL 

CONTAINS IMPORTANT SAFETY 

INSTRUCTIONS 

CONSERVER CES INSTRUCTIONS - CETTE 

NOTICE CONTIENT DES INSTRUCTIONS 

IMPORTANTES CONCERNANT LA SÉCURITÉ. 

 

Summary of Contents for UPS1000-83

Page 1: ...500 43 UPS750 43 UPS750 83 UPS1000 83 UPS1250 84 11020 Parker Drive N Huntingdon PA 15642 412 754 3000 SAVE THESE INSTRUCTIONS THIS MANUAL CONTAINS IMPORTANT SAFETY INSTRUCTIONS CONSERVER CES INSTRUCTIONS CETTE NOTICE CONTIENT DES INSTRUCTIONS IMPORTANTES CONCERNANT LA SÉCURITÉ ...

Page 2: ......

Page 3: ...ON 13 9 TROUBLESHOOTING 16 APPENDIX A UPS SPECIFICATIONS BY MODEL 17 APPENDIX B DRY CONTACT STATUS INDICATION 19 APPENDIX C WARRANTY SERVICE AND REPAIR 20 List of Illustrations Figure 1 UPS Battery Shelf Configuration 14 Figure 2 UPS Lower Battery Shelf Configuration 15 List of Tables Table 1 UPS Software Parameters 9 Table 2 RS232 Technical Specification Summary 10 Table 3 RS232 9 Pin D Connector...

Page 4: ... Page Intentionally Left Blank ...

Page 5: ...lation and operation of your new unit WARNING Your UPS contains up to eight 12 volt batteries wired in series providing a total nominal DC voltage of 96 volts This voltage is used to power the UPS when the AC utility is not available Because of the presence of this high voltage energy source even when the power cord is not plugged in certain precautions must be taken to avoid possible injury shoul...

Page 6: ...e This zero transfer time feature combined with a high frequency switching and custom magnetics results in a high operating efficiency of at least 92 percent and a total harmonic distortion of less than one percent Because the microcontroller continually monitors the load and the power line the Mesta UPS system Starts under load with no damage to itself or the load Handles nonlinear loads that req...

Page 7: ...fix letters following the end of your model number Some explanation is necessary for a few of these options B Automatic Bypass Option Units equipped with this option have an internal bypass relay that normally selects the UPS output voltage to be directed to the output receptacle of the UPS However in the unlikely event that a failure occurs in the UPS and it is unable to continue to drive the loa...

Page 8: ...ing plugged your UPS into the AC utility you may now turn on your UPS using the front panel power switch Press the ON button After a few seconds delay the UPS will begin operating Initially for a very short period of time all front panel lights will flash on simultaneously and the audible alarm will beep once Then the UPS will power up with the UPS ON green front panel light on If the AC power uti...

Page 9: ... you connect a terminal or computer to the RS232 interface see section of the manual pertaining to this interface Through this communications interface you can obtain additional useful data that is either very difficult to determine or is not explicitly available from the front panel lights One of these parameters is the load on the UPS The microcontroller will indicate the ampere and volt ampere ...

Page 10: ...r from the batteries to supply the load Flashing once per second with a 50 duty cycle indicates UPS output is shut down due to an abnormal condition In this case the status of the On Line Battery Status and Overload lights indicate the reason for the abnormal shutdown as follows 1 If all three of these other lights are also flashing in unison UPS has detected an internal failure and you need to co...

Page 11: ...on and which are off while holding in the button Record your observations as this is diagnostic information which will help the factory determine the problem Note the audible alarm will sound continuously while you are holding in the Alarm Reset button Note that whenever the Alarm Reset button is pressed the audible alarm emits a solid tone for as long as the button remains pressed Also all lights...

Page 12: ...ype SABC cr By entering S cr with no parameter letter a status update of 18 of the most useful parameters can be observed Vn View command is similar to the Status command except the View command will continually display the status of the selected parameter until the Escape key on the computer or terminal keyboard is pressed To continually view the status of a particular parameter type Vn cr V indi...

Page 13: ...ged or discharged 2 The accuracy of the percentage of battery charge remaining depends on operating conditions and the present loading of the UPS The accuracy will be much more precise at the lower percentages than it is at the higher percentages where the performance curve flattens and a perfectly correct interpolation is more difficult in the 92 100 range Changing the Programmable Parameters FSE...

Page 14: ...ich the Low Battery alarm occurs Enter a value which is an increment of 5 The UPS will now return to its normal operation automatically Options To view the options within this particular unit Type OPT cr Your screen will show the following Table 2 OPT Command Output UPS Option Configuration Version x xx Volt Amps Crest Factor Int Batt AH amp hours Voltage In Voltage Out TX type transformer type Ba...

Page 15: ...wer Switch Make sure the power switch to the UPS is off prior to storing the UPS Also batteries may be permanently damaged if not removed from storage periodically and fully recharged at least once every 6 months To recharge batteries inside UPS simply remove the UPS from storage and connect the unit to an AC power source and turn it on for a minimum of 4 hours make sure batteries are being charge...

Page 16: ...ods of time If such a malfunction exists it is advisable not to open the unit Instead contact the manufacturer or nearest repair center Instructions for Opening and Closing the UPS Before opening the unit make sure the UPS power switch is OFF and the AC power cord is unplugged Make sure all front panel LEDs go off Next remove the battery fuse located at the upper left side of the back of the unit ...

Page 17: ...icians or supervised personnel should remove and or replace the batteries Mistakes in connecting or disconnecting can cause connections to arc or weld and could result in severe bodily harm or damage to the UPS I IATTENTION UNE BATTERIE PEUT PRÉSENTER UN RISQUE DE CHOC ÉLECTRIQUE OU DE BRÛLURE PAR TRANSFERT D ÉNERGIE SUIVRE LED PRÉCAUTIONS QUI S IMPOSENT POUR LE REMPLACEMENT UTILISER LE MÊME NOMBR...

Page 18: ...r coil 2 Pull up on the right side of this bracket in order to release its tab located on the left side which is inserted in the slot of the bracket below Then slide the batteries to the right so that the bracket handle will clear the case Set the bracket coil and wires aside 3 Next remove the BC wire on the far right side of the top shelf batteries This is the wire coming from the left most termi...

Page 19: ...far left side of the lower shelf batteries as viewed in the illustration If you have a 2 battery UPS this wire is labeled B 4 Remove the B wire on the far right side of the lower shelf batteries 5 Upon removal of the remaining wire connecting the batteries in series the batteries are free for removal replacement Reverse the above procedures to re install batteries I IWARNING Caution on re installa...

Page 20: ...and the UPS ON light is flashing the system shut down due to an overload 3 If all four front panel lights are flashing the system has gone into a diagnostic mode 4 If the system is in a diagnostic mode press and hold the reset button and record the status of the four front panel lights on off flashing 5 If the system is in a diagnostic you may also check the fault status indication through the RS2...

Page 21: ...PS SPECIFICATIONS BY MODEL This section of the Mesta Electronics Owner s Manual contains the full set of operating specifications for each of the models covered herein UPS ModelsØ Ø UPS500 43 UPS1250 84 500VA 1250 VA ...

Page 22: ...m resets overloads and is used to initiate UPS in service battery test Power ON OFF switches RS232 Interface for remote communi cations of status and diagnostics PHYSICAL Operating Temp 0 C to 40 C ambient without derating Storage Temp 20 C to 40 C Thermal cooling fan as required Audible Noise 35 dBA Line Cord 6 detachable black 3 wire ground with NEMA 5 15P plug Output Receptacles 4 NEMA 5 15R RS...

Page 23: ...volts and 0 1 amps The end user may either purchase cabling and software from Mesta Electronics Inc to interface this connector with an external computer or construct their own customized cable Below is a diagram showing the actual 15 pin connector and a description of the dry contacts available DRY CONTACT PIN LOCATIONS Pins 8 15 AC Fail Internal dry contact is closed when batteries are being dis...

Page 24: ...onics Inc An extended warranty may be purchased The battery manufacturer s warranties are passed through by Mesta Electronics Inc to the customer Before returning any UPS in or out of warranty to Mesta Electronics purchaser must contact Mesta s Customer Service Department Any UNAUTHORIZED return of an UPS to Mesta Electronics for in warranty or out of warranty repairs will be subject to a 250 insp...

Page 25: ...UPS REV 3 7 11 05 Mesta Electronics Inc Ø Ø The foremost name in power protection ...

Page 26: ...MESTA ELECTRONICS INC 11020 Parker Drive N Huntingdon PA 15642 412 754 3000 ...

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