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USER'S MANUAL

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1. pg 11 CHAPTER 3 Installation 4 224 3 1 General 3 2 Initial inspection 3 2 1 Mechanical inspection 3 2 2 Preparation for use 3 3 AC source requirements 3 4 Cooling and placement 3 5 Rack mounting 3 6 Power connection 3 7 tne tse utente pg 13 3 7 1 Selecting wire size 3 7 2 Wire termination sess pg 14 3 7 3 Single load connection local sense 3 7 4 Single load connection remote sensing pg 15 3 7 5 Multiple load connections radial distribution method 3 7 6 Multiple load connections with distribution terminals pg 16 3 7 7 Grounding outputs 3 8 External control connector 3 8 1 General 3 8 2 descriptions s nii iei dicus pg 17 3 8 3 Technical description 3 8 4 Default pg 18 3 9 Repackaging for shipment pg 12 TABLE OF CONTENTS ZUP SERIES 3 10 Outline drawings ZUP 200W amp 400W pg 19 3 11 Outline drawing ZUP 800W pg 20 3 12 Outline drawing front panel connector option pg 21 CHAPTER 4 Operating pg 22 4 1 Introduction 4 2 Controls and Indicators 4 2 1 Front
2. 9NILVH3dO 10 2 2 SUPPLEMENTAL CHARACTERISTICS The supplemental characteristics give typical but non warranted performance characteristics The supplemental characteristics are useful in accessing applications for the power supply Several kinds ofsupplemental characteristics are listed below 1 EVALUATION DATA Typical performance ofthe power supply 2 RELIABILITY DATA Reliability performance ofthe power supply 1000 DATA Performance ofthe power supply under IEC 1000 test conditions 4 EMI DATA Typical EMI conducted and radiated performance of the power supply The supplemental characteristics data are held in each Nemic Lambda sales and service facility For further details please contact the Nemic Lambda office nearest you 11 CHAPTER 3 INSTALLATION 3 1 GENERAL This chapter contains instructions for initial inspection preparation for use and repackaging for shipment Connection to PC linking ZUP units and setting the address are described in chapter 5 NOTE ZUP series power supplies generate a magnetic field which might affect the operation of other instruments If your equipment is susceptible to magnetic fields do not position adjacent to the ZUP 3 2 INITIAL INSPECTION Prior to shipment this power supply was inspected and found free of mechanical or electrical defects Upon unpacking of the power supply inspect for any damage which have occurred in transit Keep
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5. 2 2 pg 51 WARRANTY This Nemic Lambda product is warranted against defects in materials and workmanship for a period of three years from date of shipment During the warranty period Nemic Lambda will at it s option either repair or replace products which prove to be defective LIMITATION OF WARRANTY The warranty shall not apply to defects resulting from improper or inadequate usage or maintenance by the buyer buyer supplied products or interfacing The warranty shall not apply to defects resulting from unauthorized modifications or from operation exceeding the environmental specifications of the product Nemic Lambda does not warrant the buyers circuitry or malfunctions of Nemic Lambda products resulting from the buyer s circuitry Furthermore Nemic Lambda does not warrant any damage occurring as a result of the buyer s circuitry or the buyer s supplied products No other warranty is expressed or implied WARRANTY SERVICE This product must be returned to an authorized Nemic Lambda service facility for repairs or other warranty service For products returned to Nemic Lambda for warranty service the buyer shall prepay shipping charges to Nemic Lambda and Nemic Lambda shall pay the shipping charges to return the productto the buyer DISCLAIMER The information contained in this document is subject to change without notice Nemic Lambda shall not be liable for errors contained in this document or for incidental
6. Note 1 In case of AC fail the alarm status register AC fail bit will be set but will not set the alarm bit 45 2 Alarm Status Register The alarm status register records fault conditions occurring during power supply operation Any set bit in this register causes the alarm bit in the operational status register to be set Reading the register does not change it s content The register is cleared by DCL command Meaning T Indicates that the over voltage protection was tripped 3 1 Indicates that the over temperature protection was tripped 3 1 Indicates that a failure occurred at the input voltage supply 1 2 C3 T Indicates that the foldback protection was activated 1 Indicates a programming error has occurred Table 5 6 Alarm status register content Notes 1 Since at eachAC turn off the AC fail bit is generated and stored itis recommended to send a DCL command following application of AC voltage to the power supply to clear the alarm status register 2 FOLD bitis automatically reset upon cancellation of FOLD protection 3 OVP OTP and prog bits reset atAC turn off or by DCL command In case the OTP or OVP is triggered the front panel control is disabled until the AC input is recycled by turning the AC ON OFF switch to OFF and after approx 10 sec to ON 3 Error Codes Register The error codes register records errors
7. 4 4 2 2 Output current adjust as determined by V A pushbutton 4 4 3 3 Over voltage protection adjust as determined by OVP UVP pushbutton 4 4 5 4 Under voltage soft limit adjust as determined by OVP UVP pushbutton 4 4 6 5 Address selection 5 2 1 6 ALM Indicator ALM indicates alarm caused by activation of one of the following protections Over voltage protection Overtemperature protection Foldback protection 7 OUT Pushbutton Main function Enable or disable the power supply output Auxiliary function Press and hold OUT pushbutton for approx 3sec to change function to select between safe mode restart and automatic restart 44 8 44 9 8 REM Pushbutton Main function Select between local or remote operation Auxiliary function Press and hold REM pushbutton for approx 3sec to change function to select between RS232 or RS485 communication 9 FOLD Pushbutton Pressing FOLD pushbutton arms foldback protection which shuts down output if supply transits from CV to CC 4 4 7 23 Table 4 1 contd Front panel controls and indicators Control Indicator Description Par AC ON OFF Turns AC power On and Off V A Pushbutton Selects the voltage or current adjust mode fast or slow 4 4 2 adjustment speed can be selected by pressing the 4 4 3 pushbutton consecutively Adjustment is made by rotating the Adjust knob OVP UVP Ma
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9. local remote local sensing multiple loads maintenance operational status otp output good over voltage P parallel operation parity R rack mounting remote sensing registers structure RS232 RS485 RXD RX RS232 S safe start safety symbols series operation shield status control SRQ 38 23 14 15 16 50 45 46 37 28 33 46 12 15 45 38 39 38 41 41 39 30 3 35 39 40 41 45 49 T TXD 41 TX RS232 39 U under voltage 28 V volts display 23 wire size 13 wrong command 46 51 LAMBDAA DENSEI LAMBDA GLOBAL NETWORK LAMBDA GROUP Europe North America Headquarters Lambda Electronics Inc 3055 Del Sol Boulevard San Diego CA 92154 Tel 1 619 575 4400 Fax 1 619 575 7185 http www lambdapower com Sales amp Services Lambda Electronics Inc 45 Fairchild Avenue Suite A Plainview New York 11803 Tel 1 516 629 3000 Fax 1 516 629 3070 Lambda EMI 405 Essex Rd Neptune NJ 07753 Tel 1 732 922 9300 Fax 1 732 922 9334 http www lambda emi com CANADA Lambda Electronics Canada Inc 16829B Hymus Blvd Kirkland Quebec H9H 3L4 Canada Tel 1 514 695 8330 Fax 1 514 695 8168 Coutant Lambda Ltd Kingsley Avenue Ilfracombe Devon EX 34 8ES United Kingdom Tel 44 1271 856666 Fax 44 1271 864894 http www lambda gb com FRANCE Invensys Power Systems SAS Departement LAMBDA ZAC des Delaches BP 77 Go
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11. NOTE If after completing the adjustment the display shows a different value than the setting the power supply may be at current limit Check the load condition and the power supply current limit setting NOTE The maximum and minimum setting values of the output voltage are limited by the over voltage and under voltage protection settings Refer to par 4 4 5 and 4 4 6 for details 4 4 3 Constant Current Operation 1 In constant current mode the power supply maintains the output current at the selected value while the load voltage varies with the load requirement 2 While the power supply is operating at constant current the CC LED on the front panel illuminates 3 For coarse output current adjustment press V A consecutively until the ALED illuminates and the VOLTS display shows FA A The AMPS display will show the output current setting value Rotate the ADJUST knob to set the output current At this mode approx 6 turns are required to adjust the entire range Approx 3sec after the adjustment the display returns to show the actual voltage and current 4 For fine adjustment of output current press V A consecutively until the ALED illuminates and the VOLTS display shows SL A The AMPS display will show the output current setting value Rotate the ADJUST knob to set the output current At this mode the adjustment resolution is maximal Approx 3sec after the adjustment the display returns to show the actual voltage and
12. load wire connections M4 thread for grounding either the positive or negative output 7 Output connector Male connector PSC 1 5 3 M PE Phoenix 80V and 120V models 6 Ground thread 4 3 TURN ON CHECKOUT PROCEDURE 4 3 1 General The following procedure ensures that the power supply is operational and may be used as a basic incoming inspection check 4 3 2 Prior to operation Check that the Rear panel external control receptacle is properly inserted into the connector and the wires are connected as shown in Fig 3 6 Connect the unit to an AC source as described in paragraph 3 6 Connect a DVM to the output terminals 4 3 3 Constant Voltage check Turn on the power supply Turn on the output by pressing OUT pushbutton so the OUT LED illuminates Momentarily press V A pushbutton until the V LED illuminates and the VOLTS display shows FA V The AMPS display will show the last setting of the output voltage Rotate the Adjust knob at the front panel and check that the output voltage can be varied throughout the entire range Check that the AMPS display shows the correct output voltage within the display specifications Momentarily press V A pushbutton again so the ALED illuminates and the VOLTS display shows FA A The AMP display will show the last setting of the output current Rotate the Adjust knob and check that the AMP display varies Setthe AMP display to the rated output current 25 4 3 4 Constant Cu
13. 3 Output Control 4 Status Control The commands structure syntax and registers definition are described in this paragraph as listed above 41 5 5 1 Initialization control Commands Description 1 ADRn Sets the power supply address ADR is followed by the address which n can be 01 to 31 DCL Clears the communication buffer and the following registers 1 Operational status register 2 Alarm fault status register 3 Programming error register RMTn Sets the power supply to local or remote mode This command is active when the unitis either in Local or Remote modes Transition from Local to Remote mode is made via the front panel only RMTO Transition from Remote to Local mode RMT 1 Transition from latched Remote to non latched Remote RMT2 Latched remote Transition back to Local mode or to non latched Remote can be made via the serial port RS232 485 Atthis mode the front panel Local Rem function is disabled Escape from this mode to non latched remote mode can be made by turning the AC ON OFF to OFF and after approx 10sec to ON again RMT Returns the remote local setting The returned data is an ASCII string RM1 The unitis in remote mode RM2 Theunitis in latched remote mode 5 5 2 ID control commands Commands Description MDL REV Returns the power supply model identification as an ASCII string Nemic Lambd
14. 5 2 4 Local Remote selection To enable the operation via RS232 or RS485 the power supply should be at Remote mode At this mode allthe front panel functions are disabled except Local Remote pushbutton Transition from Local to Remote control 1 Viathe front panel Momentarily press REM pushbutton so the REM LED illuminates To return from Remote to Local control momentarily press REM pushbutton so the REM LED extinguishes 2 Viathe serial communication port RS232 RS485 By sending a RMTn command to the power supply Refer to par 5 5 2 38 5 3 REMOTE PROGRAMMING VIA RS232 5 3 1 Introduction The RS232 interface is accessible through the rear panel IN OUT jacks The jacks are 8 contacts each and conform to EIA TIA 568A requirements The IN and OUT jacks are used to connect the units in a RS232 or RS458 chain to a controller The data format is ASCII 8 bits character no parity bit one stop bit The baud rate can be selected to one of the 6 possible rates between 300 and 9600bps refer to par 5 2 3 Rrefer to par 5 6 for detailed explanation Up to 31 ZUP units can be connected to the RS232 control as shown in Fig 5 1 RS232 RS485 RS485 gt dies ZUP 1 zur 2 20 31 M 1000m max gt Fig 5 1 Linking ZUP units with RS232 control 5 3 2 Rear panel connectors pinout 8 RXD 7 TX RS232 6 RXD _ I
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16. Two power supplies ofthe same rating can be connected in series to increase the output voltage orto provide bipolar output voltage When two power supplies are connected in series they should be programmed to the same output voltage to prevent damage to the lower voltage supply at short circuit condition 2 Series connection for increased output voltage 2 1 General At this operation mode two units are connected so their outputs are summed Set the current limits of each power supply to the maximum that the load can handle without damage It is recommended to connect diodes in parallel to each unit output to prevent reverse voltage during start up condition or in case one of the units shuts down Each diode should be rated to at least the power supply s output current Refer to Fig 4 12 and 4 13 for this operating mode When power supplies are connected in series and the load or one of the output terminals is grounded no point may be at a greater potential or from ground than that specified on the front panel marking 18 5 POWER POWER SUPPLY E SUPPLY LS LS S LOAD 45 i 15 POWER POWER SUPPLY _ SUPPLY Lg S LS Fig 4 12 Series connection with local sensing Fig 4 13 Series connection remote sensing 2 2 Remote programming at series operation for increased output voltage 1 Programming by external voltage The analog programming circuits of the ZUP power
17. series safety approval applies to the following operating conditions Indoor use Ambient temperature 0 C to 50 C Maximum relative humidity 90 no dew drop Altitude up to 3 000 m Pollution degree 2 SAFETY INSTRUCTIONS SAFETY SYMBOLS Instruction manual symbol The instrument will be marked with this symbol when it is necessary for the user to refer to the instruction manual 5 Indicates hazardous voltage Indicates ground terminal WARNING The WARNING sign denotes a hazard An attention to a procedure is called Notfollowing procedure correctly could result in personal injury AWARNING sign should not be skipped and all indicated conditions must be fully understood and met CAUTION The CAUTION sign denotes a hazard An attention to a procedure is called Not following procedure correctly could result in damage to the equipment Do not proceed beyond a CAUTION sign until all indicated conditions are fully understood and met FCC COMPLIANCE NOTICE Note This equipment has been tested and found to comply with the limits for a Class A digital device pursuantto part 15 ofthe FCC Rules These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment This equipment generates uses and can radiate radio frequency energy and if not installed and used in accordance with the instruction manual may cause harmful interference
18. stopped the address shown will be the selected address The display will return to show the actual voltage and current approx 3 sec from termination of rotating knob 3 While the unitis in operation depressing the ADDR pushbutton will cause the display to show the selected address 5 2 2 RS232 or RS485 selection To select between RS232 or RS485 serial communication the following steps should be taken 1 Press and hold REM pushbutton holding REM depressed for more than 1sec does not change the local remote status 2 Press and hold REM pushbutton After approx 3sec the display will continuously cycle between rs232 and rs485 approx every 3sec 3 To select RS232 release the REM pushbutton while rs232 is displayed To select RS485 release the REM pushbutton while rs485 is displayed 4 Approx 3sec after releasing the REM the display returns to show the actual voltage and current 5 2 3 Baud rate setting Six optional rates are possible 300 600 1200 2400 4800 9600 To select the desired rate the following steps should be taken The power supply should be at Local operation mode during the following procedure 1 Press and hold ADDR pushbutton After approx 3 sec the display will continuously cycle between the six optional rates approx every 2 seconds 2 Toselectthe desired rate release ADDR while that rate is displayed 3 After releasing ADDR the display will return to show the actual voltage and current
19. the rubber feet on the bottom of the power supply The screws must not protrude more than 6mm into the power supply Refer to the outline drawing in this chapter for mounting details 3 6 POWER CONNECTION Connection of this power supply to an AC power source should be made by an electrician or other qualified personnel 12 This power supply is equipped with a three conductor power cable The third conductor is the ground conductor When the cable is plugged in to an appropriate receptacle the power supply is grounded Under no circumstances should this power supply be operated without an adequate ground connection If a two contact receptacle is encountered it must be replaced by a three contact receptacle properly grounded This operation should be done by a qualified electrician It is recommended to keep the AC input wires separate from the DC output and signal wires to avoid interference To meet radiated EMI specification the EMI suppressor clamp should be attached to the AC cable as close as possible to the AC inlet ofthe power supply WARNING Some components inside the power supply are at AC voltage even when the On Off switch is in the Off position To avoid the hazard of electric shock disconnect line cord and load and wait 2 minutes before removing cover 3 7 CONNECTING THE LOAD Turn off the AC input power before making or changing any rear panel connection Make sure that all connections are securely tightened be
20. to radio communications Operation of this equipment in a residential area is likely to cause harmful interference in which case the user will be required to correct the interference at his own expense SAFETY INSTRUCTIONS OUTPUT TERMINALS COVER Models up to 60V output voltage Hazardous voltages may exist at the output terminals Attach the terminals cover supplied with the unit to the chassis after connecting the load wires as described below After connection of the load wires refer to par 3 7 attach the plastic cover to the rear panel of the power supply using two self tapping screws supplied with the unit Referto Fig 1 1 for details REAR PANEL PLASTIC COVER Fig 1 1 Terminals cover assembly LOAD WIRES OUTPUT CONNECTOR COVER 80V and 120V models MALE CONNECTOR PSC1 5 3 M PE Phoenix FEMALE PLUG PSC 1 5 3 F PLASTIC PLUG COVER Wires Copper AWG16 30 Tightening torque 4lib in Fig 1 2 Output wires connection CHAPTER 1 GENERAL INFORMATION 11 USER S MANUAL CONTENT This user s manual contains the operating instructions installation instructions and specifications of the ZUP series For information related to operation with GPIB control refer to Nemic Lambda GP485 user s manual 1 2 INTRODUCTION 1 2 1 General description The ZUP series are wide range output switching power supplies with laboratory performance The ZUP series is power factor corre
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23. 5 LS COM On Off P Output Good VCVP VRFV VCCP VRFI RCCP RCVP Fig 3 6 2 4 External Control connector default configuration ZUP rear panel view 3 9 REPACKAGING FOR SHIPMENT To ensure safe transportation of the instrument it is recommended to use the original package The original packaging material is reusable If the original package is not available contact the Nemic Lambda Sales or service facility near you for details on obtaining suitable packaging and shipping information Please attach a tag to the power supply describing the problem and specifying the owner model number and serial number ofthe power supply 18 O0 1 0 9 STAGOW A08 5 2 jeu OW G8vSH ZEZSU OZEDAl by 26 MOOY 62 MOOZ LHOI3M OSE XvTC LXOZ SHUN MOOT MOOZ SNOISN3WIG onseld urens xiueougd 4 G Sd epis 4 seuosseooy xiueoug 3d IW e 8 AJEN G 30u ees A09 0 104 v M p x deL y 9 7GL8 10 G 2G 8 Uld Jeqqn sjoejuoo MEN Ov 901 i ae 6
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25. K Korea Branch 6F Songok Bldg 4 1 Soonae Dong Pundang Gu Songnam Shi Kyonggi Do 463 020 Korea Tel 82 2 556 1171 Fax 82 2 555 2706 MALAYSIA Nemic Lambda M SDN BHD No 7 3 7th Floor Jaya Shopping Center Jalan Semangat Section 14 46100 Petaling Jaya Selangor D E Malaysia Tel 603 7957 8800 Fax 603 7958 2400 SINGAPORE Nemic Lambda S PTE Ltd 1008 Toa Payoh North 06 01 08 Singapore 318996 Tel 65 6251 7211 Fax 65 6250 9171 ISRAEL Nemic Lambda Ltd Sales Office Kibbutz Givat Hashlosha Tel Aviv 48800 Israel Tel 972 3 9024 333 Fax 972 3 9024 777 Plant POB 500 Karmiel Industrial Zone 20101 Israel Tel 972 4 9887 491 Fax 972 4 9583 347 http www nemic co il ZERO UP 200W 400W 800W Programmable DC Power Supplies Invensys 1A549 04 01E AD0204
26. LAMBDAA DENSEI LAMBDA ZERO UP Programmable DC Power Supplies Constant Voltage Constant Current Built in RS232 amp RS485 Interface with GPIB option i USTED G ING EQUIPME NT pe a pecu USER S MANUAL A NEMIC LAMBDA LTD KARMIEL INDUSTRIAL ZONE POB 500 ZC 20101 ISRAEL TEL 972 4 9887491 972 4 9887487 DECLARATION OF CONFORMITY We Nemic Lambda Ltd located at Karmiel Industrial Zone Israel declare under our sole responsibility that the product ProductName Programmable Regulated Power Supplies ZUP Series Models ZUP6 33 ZUP6 66 ZUP6 132 ZUP10 20 ZUP10 40 ZUP10 80 ZUP20 10 ZUP20 20 ZUP20 40 ZUP36 6 ZUP36 12 ZUP36 24 ZUP60 3 5 ZUP60 7 ZUP60 14 Conforms to the following product specifications Safety EN61010 1 04 93 61010 1 A2 07 95 UL3111 1 Electromagnetic Emissions EN55011 1991 Conducted Emissions Class B Radiated Emissions Class A IEC1000 4 2 1995 4 0KV CD 4 0KV AD IEC1000 4 3 1995 3V m IEC1000 4 4 1995 1 0KV AC Power Lines 0 5KV Communication Lines 1000 4 5 1995 2 0KV AC Power Lines 1 0KV AC to Ground 1 0KV Communication Lines 1000 4 6 1996 3V IEC1000 4 11 1994 1000 3 2 1995 Class 1000 3 3 1995 product herewith complies with the requirements of the Low Voltage Directive 73 23 EEC and the EMC directive 89 336 EEC for Electrical Equipmen
27. N 5 SG 4 TXD 3 RX RS232 2 TXD 1 Not used 8 RXD 7 NC 6 RXD _ 5 SG OUT 4 3 NC 2 TXD 1 Not used Fig 5 2 Rear panel connector pinout ZUP rear panel view Shield connector enclosure NOTE Tx and Rx are used for RS232 communication Txd and Rxd are used for RS485 communication Refer to RS232 and RS485 cables description for connection details 39 5 3 3 RS232 cable to ZUP NC403 NC401 The RS232 is used only for connecting the power supply to the controller PC For linking several power supplies referto par 5 3 4 NS 1 13 8 8 8 8 8 8 8 8 59 Fig 5 3 RS232 cable with DB 25 DB 25 CONNECTOR SG 5 female connector NCA03 0 sl 0000 Fig 5 4 RS232 cable with DB 9 DB 9 CONNECTOR 8PIN CONNECTOR REMARKS female connector NC401 NAME SHIELD TX TWISTED RX PAIR SG 5 3 4 Linking power supplies NC405 Itis possible to link up to 31 ZUP units using rear panel In Out connectors and linking cables as shown in Fig 5 1 The first unit communicates with the PC RS232 as shown in Figs 5 3 and 5 4 The other units are linked by RS485 interface Construction ofthe linking cable is shown in Fig 5 5 7 8 1 EIA TIA 568A SHIELDED CONNECTORS Fig 5 5 ZUP units linkin
28. ON 06 0 ALIGINNH 72 peo 96001 D 08 0 AYN IWeAdWAL ONILVYAdO ge el 8 gz 4 z 9 02 0L Ov 02 99 021417 21 2 O8dNZ oeanz o9dnz O9dNZ 9EdNZ 9ednz ozdnz 0 2 OldNZ 0 872 9dnz 9dnz les 800W Ser 2 1 SPECIFICATIONS oe v A00Z 00 LNAYYND HSNUNI v8 08 v8 08 28 64 18 24 221 2 ANAIDI 1 001 2 1002 001 28 660 dAL HOLOV4 H3MOd V SSe O Z 000 L9N3 seiduio SOINOWYVH LN33302 LNdNI YSI YIT YSI YIT V 9 LN38019 LAdNI ZHEQ Ly snonuguo OWAGIT 98 12 39VE1OA LANI yoegpjoy eunjejeduue JeAQ JeAQ SNOILO3LOMd LAdLNO 33O NO 7 pjo4 wely DO AD SNLWLS 9 0 sjeuyo S E Z 2 0 S E A09 A9 AQ SUBIP AOVLIOA uano yndyno pue OWAOOZ AOO 1e 5308 AWIL 990 09 o gro A 6 70 ADVENDOV jueuno jo 0 0 apeg NOILNIOSSY 1 Awge 900 _ zoo zoo zoo Aws zoo A ovunoov SVIA E yndjno
29. ON OFF PCn The resistor and Zener power rating must be greater than the maximum actual power dissipation COM Fig 4 15 Disabling multiple supply systems EV 2 Hierarchical structure in multiple supply systems lt is possible to define a hierarchy in multiple supply systems by enabling any N 1 unit by the Output Good signal of the N unit In this structure failure of the N unit will cause all the following units to be disabled Refer to Fig 4 16 for typical connections diagram ZUP 1 M V a PC1 A OUT GOOD OUT GOOD 1 1 aM COM V ZUP 2 2 OUT GOOD ON OFF e ecd Fig 4 16 Hierarchical structure in multiple supply systems 37 CHAPTER 5 RS232 amp RS485 REMOTE CONTROL 5 1 INTRODUCTION This chapter describes the operation of the ZUP series via the serial communication port details of the initial set up operation via RS232 or RS485 the command set and the communication protocol are described in this chapter 5 2 CONFIGURATION 5 2 1 Address setting The ZUP addresses can be set to any address between 01 and 31 Follow the procedure described below to setthe address 1 Momentarily press the ADDR pushbutton on the front panel so the ADDR LED illuminates and the VOLTS display shows Addr 2 Rotate the front panel knob While rotating the knob the AMPS display will show the selected address When the rotation is
30. P are terminated by an end of message CR carriage return character lt LF gt line feed character When sending a message to the ZUP there is no need for the end of message characters 47 5 6 4 COMMUNICATION TEST SET UP 1 Equipment PC with Windows HyperTerminal Private Edition software installed ZUP Power Supply RS232 cable NC401 when the PC uses DB 9 or NC403 when the PC uses DB 25 connector 2 PC Set Up 2 1 Open Hyper Terminal Private Edition New Connection 2 2 Enteraname 2 3 Connectto Directto Com1 or Com2 2 4 Setthe Port Properties as follows Bits per second 9600 Data e 8 Parity otio ems None Stop bits rome 1 Flow control Xon Xoff 2 5 Open Properties in the program 2 6 Setting ASCII Set Up select Echo characters locally 2 7 Press Caps Lock for capital letters 3 ZUP Set Up 3 1 Connect ZUP Power Supply to the PC using RS232 cable NC401 or NC403 3 2 Set via the front panel Baud Rate 9600 RS232 RS485 to RS232 address 01 3 3 Set Rem Local to Rem Rem LED illuminates 4 Communication 4 1 Model identification test PC write ADR01 MDL ZUP response Nemic Lambda lt XXV YYA gt 4 2 Command test PC write OUT1 CURn for n refer 5 5 3 The ZUP output should turn on and display will show the output voltage and actual output current ATTENTION Do not use Backspace Enter Ctrl or Alt
31. Panel Table 4 1 Front panel controls and indicators pg 23 4 272 ear Panel nete eene pg 24 4 2 3 Rear panel connections description pg 25 4 3 Turn on Checkout Procedure 4 3 1 General 4 3 2 Prior to operation 4 3 3 Constant Voltage check 4 3 4 Constant Current check pg 26 4 3 5 OVP check 4 3 6 UVP check 4 3 7 Foldback check 4 3 8 Output On Off 4 3 9 Address setting 4 3 10 Local Remote Operation 4 4 Local Operation a EP pg 27 4 4 1 Introduction 4 4 2 Constant Voltage Operation 4 4 3 Constant Current Operation 4 4 4 Automatic pg 28 4 4 5 Over Voltage protection OVP 4 4 6 Under Voltage Protection UVP 4 4 7 Foldback Protection 2 e pg 29 4 4 8 Output On Off Control 4 4 9 Last Setting memory ee pg 30 4 4 10 Output Voltage amp Current programming by external resistor 4 4 11 Output Voltage Programming by external voltage pg 32 4 4 12 Output Current programming by external voltage 4 4 13 Auto Parallel 2 2 0 pg 33 4 4 14 Series pg 35 4 4 15 Output good pg 37 CHAPTER 5 RS232 amp RS485 remote control pg 38 5 1 Introduction 5 2 Configuration 5 2 1 Address setting 5 2 2 RS232 or RS485 selection 5 2 3 Baud rat
32. a ZUP XXV YYA XX The rated output voltage YY The rated output current example Nemic Lambda ZUP 6V 33A Returns the software version as an ASCII string Ver XX YYA B XX The rated output voltage YY The rated output current A B Version identifier example Ver 6 33 1 0 42 5 5 3 Output control Commands Description Sets the output voltage value in volts This programmed voltage is the actual output at constant voltage mode or the voltage limit at constant current mode The range of the voltage values are as shown in table 5 1 Use all digits for voltage programming Model MIN MAX ZUP6 XY 0 000 6 000 Note ZUP10 XY 00 000 10 000 The ZUP can accept programmed value ZUP20 XY 00 000 20 000 higher by up to 5 than the table values ZUP36 XY 00 00 36 00 however it is not recommended to program ZUP60 XY 00 00 60 00 power supply over the rated voltage ZUP80 XY 00 00 80 00 ZUP120 XY 000 00 120 00 Table 5 1 Voltage programming range Example ZUP6 XY VOL5 010 ZUP10 XY VOL08 500 Returns the string SV Set Voltage followed by the present programmed output voltage value The actual voltage range is as shownin table 5 1 example SV5 010 SV08 500 Returns the string AV Actual Voltage followed by the actual output voltage The actual voltage range is the same as the programming range example AV5 010 AV08 500 Sets the output c
33. al If the negative output terminal is floated with respect to chassis ground those signals will also float at the same potential Use appropriate safety measures to prevent a shock hazard 14 Fig 3 5 2 External Control Connector pin assignment ZUP rear panel view 16 3 8 2 Pin Description Name Description Par 1 RCVP Resistive Constant Voltage programming 4 4 10 2 RCCP Resistive Constant Current programming 4 4 10 3 VRFI Reference voltage for Constant Current control connected to 4 4 10 11 12 VCCP pin except external voltage or resistive programming 4 VCCP Input of the Constant Current control circuit 4 4 10 11 12 5 VRFV Reference voltage for Constant Voltage control connected to 4 4 10 11 12 VCVP pin except external voltage or resistive programming 6 VCVP Input of the Constant Voltage control circuit 4 4 10 11 12 7 OUTPUT Open collector output 0 0 8 during normal operation open at 4 4 15 GOOD fault condition OVP FOLD and Over Temp 8 P Parallel connection pin 4 4 13 9 ON OFF On Off control pin 4 4 8 10 COM Common pin for programming On off control and Output Good 4 4 10 11 12 signal Internally connected to Sense 4 4 8 11 Ls Positive Local sensing pin 3 7 3 4 5 6 12 5 Positive Sensing pin for remote sense operation 3 7 3 4 5 6 13 LS Negative Local sensing pin 3 7 3 4 5 6 14 S Negat
34. all packing materials until inspection has been completed If any damage is detected file a claim with the carrier immediately and notify the Nemic Lambda sales or service facility nearest you 3 2 1 Mechanical inspection The mechanical inspection should confirm that there is no exterior damage to the power supply such as broken knobs or connectors and thatthe front panel and meter face are not scratched or cracked 3 2 2 Preparation for use In order to be operational the power supply must be connected to an appropriate AC source The line voltage must be within the power supply specification DO NOT apply power before reading paragraph 3 3 3 3 AC SOURCE REQUIREMENTS The ZUP series can be operated from a nominal 100V to 240V single phase 47 63Hz The input voltage range and current required for each model is specified in chapter 2 Make sure that under heavy load the AC voltage supplied to the power supply does not fall below low limit specifications 3 4 COOLING amp PLACEMENT This power supply is fan cooled Upon installation ensure sufficient space for air intake front panel and exhaust rear panel The power supply should be used in an area where the ambient temperature does not exceed 50 C 3 5 RACK MOUNTING ZUP models can be mounted in a standard 19 rack 3U height The 200W and 400W models occupy 1 6 rack length The 800W model occupies 1 3 rack length The power supplies should be fixed by M4 screws replacing
35. alue Rotate the ADJUST knob to set the over voltage protection level Approx 3sec after the adjustment the display returns to show the actual voltage and current 4 In order to see the value of the OVP press OVP UVP pushbutton so that the OVP LED illuminates At this time the display will show the OVP set value for approx 3sec 5 The minimum over voltage level is approx 105 of the output voltage set value Attempting to adjust the over voltage protection below this value will result in no response to the adjustment attempt 6 In case the OVP is triggered the front panel control is disabled unitl the AC input is recycled by turning the AC ON OFF switch to OFF and after approx 30 sec to ON 4 4 6 Under Voltage Protection UVP 1 The UVP prevents adjustment of the output voltage below a certain limit The combination of UVP and OVP functions allows the user to create a protection window for sensitive loads circuitry 2 For under voltage protection adjustment press OVP UVP consecutively until the UVP LED illuminates and the VOLTS display shows UUP The AMPS display will show the under voltage protection setting value Rotate the ADJUST knob to set the under voltage protection level 3 In order to see the set value of the UVP press OVP UVP pushbutton so that the UVP LED illuminates At this time the display will show the UVP set value for approx 3sec 4 The maximum under voltage level is approx 95 of the output voltage set value A
36. auto restart mode to On or Off AST1 Auto restart is On ASTO Auto restart is Off 16 AST Returns the string AS followed by the auto restart mode status AS1 Auto restartis ON 50 Auto restart is Off 5 5 4 Status control 5 5 4 1 Registers structure 1 Operational Status Register The operational status register records signals that are part of the power supply s normal operation In addition to the normal operation data the register holds an alarm bit which indicates that one of the alarm fault register bits is set The register is automatically updated and reading it does not change it s content Clearing the register is done by DCL command See table 5 5 for Operational Status Register content Bit Name Bit No Meaning cc cv 1 0 Indicates constant voltage 1 constant current fold 2 T Indicates foldback protection is armed ast 3 1 Indicates auto restart is 0 auto restart is off out 4 T Indicates output is 0 output is off srf 5 0 Indicates foldback protection SRQ is disabled 1 enabled srv 6 0 Indicates over voltage protection SRQ is disabled 1 enabled srt 7 0 Indicates over temp protection SRQ is disabled 1 enabled alarm 8 1 Indicates that an alarm register bit is set note 1 Table 5 5 Operational status register content
37. be connected in local or remote sensing Refer Fig 4 9 4 10 amp 4 11 for typical connections of paralleled power supplies The figure below shows connection of two units however the same connection method applies for up to 5 units LS 5 On Off MASTER POWER SUPPLY V Output Good VRFV VRFI PONP ELIT oo aS E e EE E EE E LOAD LS LS On Off SLAVE POWER Output Good SUPPLY VRFV VRFI RCVP gt o 1 Fig 4 9 Auto parallel with local sensing 1 ZUP rear panel view With local sensing it is important to minimize the wire length and resistance Also the wires resistance should be as close as possible to achieve current balance between power supplies 33 LS LS On Off Output Good VRFV VRFI RCVP On Off P o o Output Good VCVP o o VRFV VCCP Tro o VRFI RCCP o op RCVP To other slaves MASTER POWER SUPPLY POWER SUPPLY Fig 4 10 Local sensing with distribution terminals ZUP rear panel view LS On Off Output Good VRFV VRFI On Off Output Good VRFV VRFI RCVP To other slaves MASTER POWER SUPPLY SLAVE POWER SUPPLY Fig 4 11 Auto parallel with remote sensing ZUP rear panel view 34 4 4 14 Series Operation 1 GENERAL
38. cted and operates from worldwide AC voltage range continuously Output voltage and current are continuously displayed and LED indicators show the complete operating status ofthe power supply The front panel controls allow the user to set the output parameters the protection levels over voltage under voltage and arm the foldback protection to disable the output if the unit Switches from Constant voltage mode to Constant current mode 1 2 2 Configurations The ZUP can be configured into a programmable power system of up to 31 DC outputs using the built in RS232 or RS485 communication port in the power supply In a GPIB system the GP485 controller can control up to 31 ZUP units in a single GPIB address 1 2 3 Control via the serial communication port The following parameters can be programmed via the serial communication port 1 Output voltage setting 2 Output current setting 8 Output current measurement 3 Output On Off 9 Power supply start up mode 4 Arming or release of the foldback protection last setting or safe mode 5 Over voltage protection setting 10 Over voltage protection setting read 6 Soft under voltage limit 11 Under voltage limit read 7 Output voltage measurement 12 Remote Local Control 1 2 4 Output connections Output connections are made to rear panel bus bars for models up to 60V and connector for the 80V and 120V models Either the positive or negative terminal may be grounded or the output may be floa
39. current 27 4 4 4 Automatic Crossover If the power supply operates in Constant voltage mode while the load current is increased to greater than the current limit setting the power supply will automatically switch to Constant current mode If the load is decreased to less than the current limit setting the power supply will automatically switch back to Constant voltage mode 4 4 5 Over Voltage Protection OVP 1 The OVP circuit monitors the voltage atthe power supply sensing points thus guaranteeing the protection level atthe load Upon detection of Over Voltage condition the power supply will shut down To resume operation the power switch should be turned off for approx 30sec Prior to turn on check carefully that the sense wires are connected correctly and secured 2 OVP setting values are limited at the minimum and maximum levels At minimum level the OVP level is limited by the Output Voltage setting therefore the OVP level cannot be adjusted below the Output Voltage At maximum level the OVP levelis limited to the values shown in Table 4 1 MODEL by output voltage 6V 10v 20 36V 60V 120v Maximum OVP 7 5V 13V 24V 40V 66V 88V 132V Table 4 1 Maximum OVP setting levels 3 For over voltage protection adjustment press OVP UVP consecutively until the OVP LED illuminates and the VOLTS display shows OUP The AMPS display will show the over voltage protection setting v
40. e setting 5 2 4 Local remote selection TABLE OF CONTENTS ZUP SERIES 5 3 Remote programming via 5232 pg 39 5 3 1 Introduction 5 3 2 Rear panel connectors pinout 5 9 3 R9232 cable ree pne eb eee eu pg 40 5 3 4 Linking power supplies 5 4 Remote programming via 5485 22 2 002 pg 41 5 4 1 Introduction 5 4 2 RS485 cable 5 4 3 Linking power supplies 5 5 ZUP series command set description 5 5 1 ID Control pg 42 5 5 2 Initialization control 5 5 3 Output control chee var d een rtr pg 43 5 5 4 Status control pg 45 5 5 4 1 Registers structure 46 5 5 4 2 Status control commands pg 5 6 Communication pg 47 5 6 1 General information 5 6 2 Accessing a ZUP unit 5 6 3 End of message 5 6 4 Communication Test set pg 48 5 7 Service pg 49 5 7 1 Service Request SRQ 5 7 2 Service Request message 5 7 3 Service Request enable disable commands CHAPTER 6 Maintenance 2124 2 pg 50 6 1 Introduction 6 2 Units under warranty 6 3 Periodic Maintenance 6 4 Adjustment and calibration 6 5 Part replacement and repairs 6 6 Fuse ratings USER S MANUAL
41. eJos Bununoy 0 02 o T 07062 017966 0 0c CA E 4 3MOd Lm N ST Q o a 1 ooe 008 90 3 18VAOW3H BY 856 SNOISN3MWIG Seues M008 dNZ SONIMVYC ANIILNO 20 3 12 OUTLINE DRAWINGS Front Panel Output Jacks Option available for ZUP200W ZUP400W and ZUP800W series for 6V to 60V models ZUP200 L and ZUP400 L ZUP800 L Up to 20A output current via front panel jacks CAUTION ZUP800 front panel output is protected against overcurrent by 25A 125V Fast acting fuse For continued protection against risk of fire replace only with same type and rating of fuse 153 0 51 0 153 0 51 392 0 Max Physical Dimensions in mm 21 CHAPTER 4 OPERATING INSTRUCTIONS 4 1 INTRODUCTION This chapter describes the operating modes controls and indicators of the ZUP power supply series Details of local operation via the front panel and various modes of operation are described in this chapter including remote analog control via the rear pan
42. el For computer control via the Serial port RS232 or RS485 referto chapter 5 4 2 CONTROLS AND INDICATORS 4 2 1 Front panel Fig 4 1 Front panel controls and indicators 22 Table 4 1 Front panel controls and indicators Control Indicator AMPS Display VOLTS Display Description Actual output current display at normal operation While adjusting the output current the set value will be shown The display will automatically return to show the actual current approx 3sec from completion of adjustment Actual output voltage display at normal operation The measurement circuits monitor the voltage at the sensing points hence at remote sensing where there is voltage drop on the load wires the voltage at the power supply output terminals will be higher than the displayed value Attention should be taken not to exceed the output power rating While adjusting the output voltage the set value will be shown The display will automatically return to show the actual voltage approx 3sec after completion of adjustment Par CV Indicator 4 CC Indicator CV LED indicates that the power supply is regulating it s output ata constant voltage CC LED indicates that the power supply is regulating it s output at a constant current 5 ADJUST knob Rotary pulse generator The ADJUST knob functions to determine the following output parameters 1 Output voltage adjust as determined by V A pushbutton
43. ff sequence of the power supply The OUT parameter storage is determined prior to the acturn offto allow two modes of re start of the power supply STORED PARAMETERS 1 Output Voltage 7 REMOTE LOCAL 2 Output Current 8 ADDRESS 3 OVP Levels 9 Communication Standard RS232 RS485 4 UVP Levels 10 Baud rate 5 FOLD 11 Service request parameters 6 Re start mode Items 8 10 are related to computer controlled operation and explained in chapter 5 1 Automatic start mode In this mode the power supply restores it s last operation setting and sets the OUT to ON state Upon start up the output is enabled and the power supply delivers power to the output terminals To select this mode press and hold OUT pushbutton After approx 3sec the display will continuously cycle between AS ON auto start on and AS OFF auto start off approx every 3sec Releasing the OUT pushbutton while AS ON is displayed will set the power supply to automatic start mode holding OUT depressed for more than 1sec does not change the output on off status In cases where the Over Voltage or Over Temperature or Foldback protection has been activated the unit will automatically change to safe start mode after the AC voltage recycling 2 Safe start mode In this mode the power supply restores it s last operation setting and sets the OUT to the OFF state To select this mode press and hold OUT pushbutton After approx 3sec the display will continuo
44. fore applying power There is a potential shock hazard when using a power supply with a rated output greater than 40V Use load wiring with a minimum insulation rating equivalent to the maximum output voltage of the power supply 3 7 1 Selecting wire size Two factors must be considered in selecting wire size 1 Wires should be at least heavy enough to avoid overheating while carrying the power supply load current at the rated load or the current that would flow in the event the load wire were shorted whichever greater 2 Wire size should be selected to enable voltage drop per lead to be less than 0 5V atthe rated current It is recommended to minimize voltage drop on the wires to prevent excessive output power consumption from the power supply Please refer to Tables 3 1 and 3 2 for maximum wire length to limit voltage drop by American and European measurements respectively Maximum length in feet to limit voltage drop to 0 5V or less 1 1 1 2 0 1564 320 Table 3 1 Maximum wire length for 0 0983 1016 508 0 5V drop on lead in feet 13 Maximum length in meters to limit voltage drop to 0 5V or less Resistivity cross sect Ohm km Table 3 2 Maximum wire length for 0 5V drop on lead in meters For current not shown in tables 3 1 and 3 2 use formula Maximum len
45. g cable 8 PIN CONNECTOR IN 8 PIN CONNECTOR OUT REMARKS PIN NO NAME PIN NO NAME HOUSING SHIELD HOUSING SHIELD 5 SG 5 SG 2 TXD 2 TXD 4 TXD 4 TXD 6 6 RXD 8 RXD 8 RXD 5 4 REMOTE PROGRAMMING VIA RS485 5 4 1 Introduction For operation environments that require high noise immunity or long distance communication it is recommended to use the built in RS485 interface The RS485 interface is accessible through the rear panel In Out jacks in a similar way to the RS232 The communication is a four wire type Refer to par 5 6 for detailed explanation Up to 31 ZUP units can be connected to the RS485 control as shown in Fig 5 6 RS485 RS485 RS485 lt gt ZUP 1 a7 ZUG 1000m max E 7 E i E JI Fig 5 6 Linking ZUP units to RS485 control 5 4 2 RS485 cable PC to ZUP NC402 Bs 0 WS peu Le Fig 5 7 RS485 cable with DB 9 CONNECTOR 8 PIN CONNECTOR REMARKS DB 9 female connector NAME PIN NO NAME SHIELD HOUSING SHIELD TXD 6 RXD TWISTED PAIR TWISTED PAIR 5 4 3 Linking power supplies Power supplies are linked in the same way as described in par 5 3 4 5 5 20 SERIES COMMAND SET DESCRIPTION The ZUP command setis divided into four categories as follows 1 Initialization Control 2 10 Control
46. gth 500 current resistivity Where current is expressed in ampers and resistivity in ohms km or ohms 1000ft 3 7 2 Wire termination The wires should be properly terminated with terminals securely attached DO NOT use non terminated wires for load connection at the power supply At local sensing short between LS or S to V or S or LS will cause damage to the power supply Reversing the sense wires might cause damage to the power supply at local and remote sensing 3 7 3 Single load connection Local Sensing Fig 3 1 illustrates the connection of a single load to the power supply using local sensing This connection is made via the External Control Connector located on the rear panel of the power supply Local sensing is suitable for applications where load regulation is not critical 14 13 S LS S LS C COM On Off LS V P Output Good POWER VCVP VRFV SUPPLY LOAD VCCP VRFI EV RCCP RCVP 15 2 1 qn EXTERNAL CONTROL CONNECTOR ZUP rear panel view Fig 3 1 Single load connection Local Sensing 14 3 7 4 Single load connection Remote Sensing Remote Sensing is used in cases where in Constant Voltage mode the load regulation is important at the load terminals Use twisted or shielded wires to minimize noise pick up If shielded wires are used the shield should be connected to the ground at one point either the power supply chassis or the load ground The optimal point f
47. has two controls a front panel pushbutton and a rear panel connection priority is given to the rear panel connection 1 Rear panel ON OFF Control Contacts 9 10 at the rear panel External Control connector fig 4 2 item 4 serve as ON OFF terminals Either short circuit or TTL 0 level enables the power supply output and open circuit or TTL 1 level disables the power supply s output An open collector transistor can be used for the ON OFF control as shown in fig 4 3 with sink current ability of more than 2 5mA Please note that pin 10 COM is internally connected to the Sense potential therefore for floating ON OFF Control a photocoupler should be used as shownin Fig 4 4 5 5 LS 5 5 i ON COM On Off P Rob VCVP VRFV Output Good VCVP VRFV Output Good VCCP VRFI VRFI RCCP RCVP RCCP RCVP 2 1 Fig 4 3 ON OFF Control referencesto Sense Fig 4 4 Floating ON OFF Control ZUP rear panel view ZUP rear panel view 2 Front panel ON OFF Control The Front Panel ON OFF is controlled by the OUT pushbutton To enable the output OUT pushbutton should be pressed so that OUT LED illuminates The operation of OUT pushbutton is enabled only ifthe rear panel ON OFF is configured to ON 29 4 4 9 Last Setting Memory The ZUP series is equipped with Last Setting Memory which stores all power supply parameters at each ac turn o
48. he load current toward the supply current rating Check that the output voltage and current fall to zero when the load current reaches the Constant Current setting The FOLD LED should flash the ALM LED illuminates and the output is disabled in this condition Reduce the load current setting below the power supply current rating and momentarily press FOLD pushbutton Check that the output voltage and current recover and FOLD continuously illuminates Momentarily press the FOLD pushbutton and check that FOLD LED turns off 4 3 8 Output On Off Repeatedly press OUT pushbutton and check that the power supply output is turned On and Off While the outputis On the OUT LED illuminates While the output is Off the LED is Off 4 3 9 Address setting Momentarily press ADDR pushbutton so the ADDR LED illuminates and the AMPS display shows Addr The VOLTS display shows the last address setting Rotate the ADJUST knob and check that the VOLTS display varies between 0 and 31 4 3 10 Local Remote operation Repeatedly press REM pushbutton and check that REM LED turns on and off While the power supply is at Remote mode the LED is on and while at Local mode the LED is off While the LED is off turn off the power supply remove the DVM and the load wires 26 4 4 LOCAL OPERATION 4 4 1 Introduction This paragraph describes the operating modes not involved in programming the power supply via it s serial communication port Operation utilizing
49. ive Sensing pin for remote sense operation 3 7 3 4 5 6 Table 3 3 External Control connector pin description COM pin 10 is connected internally to the Sense potential Connection of the COM to another potential or other than shown in this manual may cause damage to the power supply 3 8 3 External Control Connector Technical description 1 Connector type AMP Part No 102617 5 14 contacts double row 2 Receptacle AMP Part No 87631 9 Polarized 14 contacts double row 3 Receptacle contacts AMP Part No 87523 5 strip form or 87523 6 loose piece 4 Wires AWG 24 to 20 5 Hand tool for wire connection AMP Part No 90202 2 6 Applicator for stripper crimper machine AMP Part No 466905 1 17 3 8 4 External Control Connector Default configuration connections The external control connector is configured for Local sensing and no external On Off control Refer to Fig 3 6 below for the default configuration description The default configuration is Local sensing Rear panel On Off disabled On Off can be controlled by the Front panel or by the serial communication port and output voltage and current are controlled by the Front panel or by the serial communication port For other configurations remove the contact that should be modified and replace it with a new one with a suitable connection Replacement contacts are supplied in the packaging of the power supply 14 13 5 15
50. kes selection between Over voltage or Under voltage 4 4 5 adjust mode Adjustment is made by rotating the Adjust 4 4 6 knob ADDR Main function Selects the address for remote control The 5 2 1 adjustment is made by rotating the Adjust knob Auxiliary function Holding ADDR pressed for approx 3sec 5 2 3 changes the function to Baud rate selection 4 2 2 Rear Panel 6V to 60V models 80V and 120V models Fig 4 2 Rear panel connections 24 4 2 3 Rear Panel Connections description Connection Description Par 1 AC Inlet IEC type appliance inlet 3 6 EIA TIA 568A type connector used for connecting power 5 3 4 supply to RS232 or RS485 port of computer for remote control purposes When using several power supply units in a power system the first unit Remote in is connected to the computer and the remaining units are chained Remote In to Remote Out 2 Remote In 3 Remote Out EIA TIA 568 type connector used for chaining power 5 3 4 supplies to form a serial communication bus 4 External control Connector containing control and signal lines for external 3 8 remote control of the power supply Sense On Off Output voltage and current programming by external resistor and Output voltage and current programming by external voltage and Output Good signal 5 Output Bus Bars Bus bars for output connection Use M6 or 1 4 screws for 3 7 6V to 60V models
51. keys If an error was made during writing press and write again the command 48 57 SERVICE REQUEST 5 7 1 Service Request SRQ Service request is a message generated by the ZUP power supply to interrupt the controller SRQ can be generated by a power supply fault condition Each of the following conditions can generate SRQ message 1 Over Voltage Protection OVP 2 Over Temperature Protection OTP 3 Foldback Protection The operator decides which of the conditions are defined as faults Enabling or disabling a condition from generating SRQ message does not affect the condition within the power supply 5 7 2 Service Request message The service request message consists of three characters terminated by EOS lt CR gt lt LF gt The first character identifies the SRQ cause 1 Foldback 2 OVP 3 OTP The 2 nd and 3 rd characters identify the ZUP power supply address Example String generated by a ZUP unit 120 lt CR gt lt LF gt means foldback protection was activated in power supply address 20 5 7 3 Service request enable disable commands Command Description 1 SRVn Enable or disable OVP service request SRV1 Enable OVP service request SRVO0 Disable OVP service request 2 SRV Returns QV followed by the OVP service request status QV1 OVP service request enabled QVO OVP service request disabled 3 SRTn Enable or disable OTP service request SRT1 Enable OTP ser
52. mains the protective earth terminal must be connected to the safety electrical ground before an other connection is made Any interruption of the protective ground conductor or disconnection of the protective earth terminal will cause a potential shock hazard that might cause personal injury FUSES Fuse must be changed by authorized Nemic Lambda service personnel only For continued protection against risk of fire replace only with the same type and rating of fuse Refer to maintenance instructions in chapter 6 for fuse rating INPUT RATINGS Do not use AC supply which exceeds the input voltage and frequency rating of this instrument The input voltage and frequency rating of the ZUP Series is 100 240V 50 60Hz For safety reasons the mains supply voltage fluctuations should not exceed 10 of nominal voltage LIVE CIRCUITS Operating personnel must not remove the instrument cover No internal adjustment or component replacement is allowed by non Nemic Lambda qualified service personnel Never replace components with power cable connected To avoid injuries always disconnect power discharge circuits and remove external voltage sources before touching components PART SUBSTITUTIONS amp MODIFICATIONS Part substitutions and modifications are allowed by authorized Nemic Lambda service personnel only For repairs or modifications the instrument must be returned to a Nemic Lambda service facility ENVIRONMENTAL CONDITIONS The ZUP
53. metz le Chatel 91940 LES ULIS Cedex France Tel 33 1 60 12 74 00 Fax 33 1 60 12 74 01 E mail mailbox lesulis psd invensys com http www invensys power systems fr GERMANY Powerware GmbH D 77844 Achern Postfach1367 D 77855 Achern Karl Bold Str 40 Germany Tel 49 7841 666 0 Fax 49 7841 5000 E mail info germany powerware com ITALY Invensys Power Systems S p A Via Pellizza da Volpedo 53 20092 Cinisello Balsamo Milano Italy Tel 39 02 660 40540 Fax 39 02 660 40650 SCANDINAVIA Lambda Scandinavia Powerware AB Sagvagen 2 SE 184 25 Akersberga Sweden Tel 46 8 598 94090 Fax 46 8 540 66096 http www lambda scandinavia com DENSEI LAMBDA GROUP Asia Far East Middle East JAPAN Densei Lambda K K Head Office 1 11 15 Higashi gotanda Shinagawa ku Tokyo Japan 141 0022 Tel 81 3 3447 4411 Fax 81 3 3447 7784 http www densei lambda com CHINA Shanhai Office of Wuxi Nemic Lambda Electronic Co Ltd 2008 Hongmei Bldg Hongmei Road Cao He Jing Hi Tech Park Shanghai China 200233 Tal 86 21 6485 0777 Fax 86 21 6485 0666 Densei Lambda K K Beijing Office Room 818 Office Tower One Beijing Junefield Plaza No 6 Xuanwumenwai St Xuanwu District Beijing P R CHINA 100052 Tel 86 10 6310 4872 Fax 86 10 6310 4874 Densei Lambda Hong Kong Branch Room 8 27 F Mega Trade Center 1 Mei Wan St Tsuen Wan N T Hong Kong Tel 852 2420 6693 Fax 852 2420 3362 Densei Lambda K
54. n attempt to adjustthe under voltage protection above this value will result in no response to the adjustment attempt 5 The under voltage protection is a software protection only 28 4 4 7 Foldback Protection 1 Foldback protection will shut down the power supply output if the load current exceeds the current limit setting level This protection is useful when the load circuitry is sensitive to over current condition 2 Toarmthe Foldback protection the FOLD pushbutton should be pressed so the FOLD LED illuminates Atthis condition transition from Constant Voltage to Constant Current mode will activate the Foldback protection 3 Activation ofthe Foldback protection disables the power supply s output turns on the ALM alarm LED andflashes the FOLD LED 4 There are 2 modes of releasing an activated Foldback protection 1 Short press on FOLD pushbutton enables the output and re arms the protection circuit If the load is smaller than the currentlimit level the power supply will restore normal operation Ifthe load is greaterthan the current limit level the output will be disabled again and Foldback indicators will beon 2 Long press approx 3sec on FOLD pushbutton will disable the Foldback protection circuit and enable the output The power supply will restore operation to Constant Voltage or Constant Current mode depending on the load characteristics and power supply setting 4 4 8 Output ON OFF Control The ON OFF circuit
55. nd current readback only 2 Foldback protection if desired may only be used with the master unit When the master unit shuts downit programs the slave units to zero output voltage 3 Setting the voltage and current The output voltage ofthe slave units should be programmed higher than the output and the master to avoid interference with the master CV control Output voltage of the master should be programmed to the desired voltage and the current limit to the desired load current divided by the number of parallel units During operation the master unit operates at CV mode and the slave units at CC mode 4 While operating in CV mode the master unit regulates the output voltage and the slave units operate as controlled current source following the master output current It is recommended to design the power system so that each unit will supply up to 95 of it s current rating because of an imbalance which may be caused by cabling and connections voltage drop 5 Over Voltage Protection The master unit OVP should be adjusted to the desired OVP level The OVP ofthe slave units should be adjusted higher than the Master OVP When the master unit shuts down it programs the slave units to zero output voltage If a slave unit shuts down when it s OVP is set lower than the master output voltage only that unit will shut down and remaining slave units will supply all the load current 6 Connection to the Load At auto parallel mode power supplies can
56. ng the register s content Refer to table 5 7 for the register content description example PS00000 Reads the complete status ofthe power supply This query returns ASCII characters representing the following data AV actual voltage gt SV voltage setting AA lt actual current SA lt current setting OS lt operational status register AL alarm status register PS lt programming error register example AV5 010SV5 010AA00 00SA24 310S00010000AL00000PS00000 5 6 COMMUNICATION PROTOCOL 5 6 1 General Information The average command processing time of the ZUP Series is 15mSec It is not recommended to send strings of commands to the ZUP power supply without considering the processing time For query commands wait until the ZUP reply message has been completed before sending a new command 5 6 2 Accessing a ZUP Unit The default condition of the ZUP series is Listen mode In order to access ZUP unit for sending a command or query the address of that unit should be sent by the host controller ADRn The ZUP that recognizes it s address becomes active and can communicate with the host controller The other units remain in Listen mode waiting to receive their address To access another unit the controller should send the address of that unit The previously active unit changes it s state to Listen mode and the addressed unit becomes active 5 6 3 End of Message The messages generated by the ZU
57. on terminals by a pair of twisted or shielded wires Each load should be separately connected to the remote distribution terminals If Remote Sensing is required the sensing wires should be connected to the distribution terminals or atthe most critical load To Dristribution Terminals LOAD 1 5 15 5 LS 5 COM On Off V P Output Good POWER P SUPPLY LOAD 2 VCVP VRFV V VRFI 25 V RCCP RCVP DISTRIBUTION TERMINAL LOAD 3 EXTERNAL CONTROL CONNECTOR ZUP rear panel view Fig 3 4 Multiple load connections with distribution terminal 3 7 7 Grounding outputs Either the positive or negative output terminals can be grounded To avoid noise problems caused by common mode current flowing from the load to ground it is recommended to ground the output terminal as close as possible to the power supply output Always use two wires to connect the load to the power supply regardless of how the system is grounded The maximum potential including output voltage that either output terminal is from ground must not exceed the specified voltage on the front panel 3 8 EXTERNAL CONTROL CONNECTOR 3 8 1 General The external control connector used for analog programming of the power supply is located on the rear panel of the unit Fig 4 2 item 4 The pin assignment is shown in Fig 3 5 below 18 WARNING The External Control Connector signals are connected to the negative output termin
58. or consequential damages in connection with the furnishing performance or use of this material No part of this document may be photocopied reproduced or translated into another language without the prior written consent of Nemic Lambda TRADEMARK INFORMATION Microsoft and Windows are trademarks of Microsoft Corporation SAFETY INSTRUCTIONS CAUTION The following safety precaution must be observed during all phases of operation service and repair of this equipment Failure to comply with the safety precautions or warnings in this document violates safety standards of design manufacture and intended use of this equipment and may impair the built in protections within Nemic Lambda shall not be liable for user s failure to comply with these requirements INSTALLATION CATEGORY The ZUP Series has been evaluated to INSTALLATION CATEGORY II Installation Category over voltage category II local level appliances portable equipment etc With smaller transient over voltages than Installation Category over voltage category GROUNDING This productis a Safety Class 1 instrument To minimize shock hazard the instrument chassis must be connected to an electrical ground The instrument must be connected to the AC power supply mains through a three conductor power cable with the ground wire firmly connected to an electrical ground safety ground atthe power outlet For instruments designed to be hard wired to the supply
59. or the shield ground should be determined by experimentation At Remote Sensing the maximum voltage drop allowed at the load wires is 0 5V per wire 6V to 60V models and 2V per wire for 80V and 120V models To Load Terminals 5 5 Output Good SUPPLY VCVP VRFV VCCP VRFI RCCP RCVP YS shield EXTERNAL CONTROL CONNECTOR ZUP rear panel view Fig 3 2 Remote Sensing single load 3 7 5 Multiple load connections radial distribution method In cases of multiple loads connected to one supply each load should be connected to the power supply s outputterminals using separate pairs of wires It is recommended that each pair of wires will be as short as possible and twisted or shielded to minimize noise pick up and radiation The sense wires should be connected to the power supply output terminals or to the load with the most critical load regulation requirement 5 1 ts LOAD 1 5 5 COM o o On Off POWER P o o Output Good SUPPLY VCVP o o VRFV LOAD 2 VCCP o o VRFI RCCP RCVP 2 1r LOAD 3 EXTERNAL CONTROL CONNECTOR ZUP rear panel view Fig 3 3 Multiple load connections with distribution terminal 15 3 7 6 Multiple load connections with distribution terminals If remotely located output distribution terminals are used the power supply output terminals should be connected to the distributi
60. ower supplies by RS485 communication is provided with the power supply according to order Cable description 0 5m typ length shielded EIA 568A type plugs 8 contacts Refer to par 5 3 4 for details 1 3 3 AC Cables PART No MARKET DESCRIPTION NC301 USA 13A 125V unshielded 2m typ length with IEC320 connector on one side and NEMA 5 15P connector the on other side NC302 Europe 10A 250V unshielded 2m typ length with IEC320 connector on one side and INT L 7 standard VII dual earthing on the other side NC303 General 10A 250V unshielded 2m typ length with IEC320 connector on one side and unterminated stripped wires on the other side Use the cable only with plug approved by the national safety standards of the country of usage NC305 Japan 13A 125V unshielded 2m typ length with IEC320 connector on one side and Japan type plug on other side 1 3 4 Front Panel Outputs option In cases where load connection at the front panel is required optional Front Panel output Jacks for a load current of 20A maximum is available Please note that the power supply height is increased with this option Refer to outline drawing par 3 12 for details ORDER No DESCRIPTION ZUP 20A Front Panel Output Jacks CHAPTER2 SPECIFICATIONS 2 1 SPECIFICATIONS 200W 400W Series GL 06 5 SL 98 28 28 82 78 68 06 5 GL 28 84 06 4 GL v8 08 64 92 78 08 06 6 Sl 08 92 8 62 0 SL SL 06 4 SL 06 6 84174
61. planation given for constant voltage resistive programming also applies for constant current 5 LS Fig 4 6 Optional S LS Constant current resistive programming sets upper limit On Off Output Good VRFV VRFI RCVP Optional sets lower limit 0 4K Q programming resistor External control connector ZUP rear panel view 31 4 4 11 Output Voltage Programming by external voltage Fig 4 7 shows the set up for external voltage programming of the output voltage A voltage source variable from 0 to 4V programs the output voltage proportionally from zero to full scale The static load current on the programming source is less than 2uA The source resistance should be less than 10Kohm to avoid degradation of offset and drift specifications When external voltage is used for programming the front panel and the computer control via the serial communication are disabled Note Full scale is 105 of the rated output voltage 14 13 External control connector 5 118 Fig 4 7 m ars Output voltage programming by external voltage source 0 AVDC COM re On Off ZUP rear panel view Voltage Po Output Good E VRFV e e VRFI RCCP e RCVP 2 4 4 12 Output Current Programming by external voltage Fig 4 8 shows the set up for external voltage programming of the output current A voltage source variable from 0 to 4V programs the output current p
62. rated and floated from each other 2 Programming by external resistor Programming by external resistor is possible Refer to Fig 4 5 and Fig 4 6 for details 3 Programming via the communication port RS232 RS485 The communication portis isolated from the output voltage therefore the serialy connected power supplies can be chained using the Remote In and Remote Out connectors 36 4 4 15 Output Good Signal Output Good Signal is an open collector output referenced to COM potential indicating the status of the power supply output While the power supply operates normally the Output Good is low 0 0 8V When the power supply output is disabled due to activated OVP OTP or FOLD protection or by OUT Set to off or by ac ON OFF set to off then the output signal stops conducting The maximum sink currentis 10mA and the maximum voltage is 40VDC The Output Good Signal is referenced to the COM potential therefore pay attention NOT to short it to another potential as it may damage the unit Typical applications of Output Good Signal 1 In multiple power supply systems itis possible to disable all the units when a critical unit fails Refer to Fig 4 15 for typical connection diagram Critical V ZUP ZUP n Unit 1 I 5mA ON OFF PC1 ourcoop 4 p COM COM V i m For models with output voltage rating greater than 40V use UEM a Zener diode to limit the Output Good voltage below 40V
63. roportionally from zero to full scale The static load current on the programming source is less than 2uA The source resistance should be less than 10Kohm to avoid degradation of offset and drift specifications Note Full scale is 105 ofthe rated output current 14 13 External control connector _ s LS Fig 4 8 iis Output current programming by external voltage source ZL On Off ZUP rear panel view Voltage P Output Good 9798 VCVP VRFV VCCP VRFI RCCP RCVP The Com pin at the external control connector is connected to the Sense potential NEVER connect the Com pin pin10 to any potential as it may damage the power supply Avoid connection of resistors greater than 4kohm or voltage greater than 4V for external resistor or voltage programming as it may cause the output voltage and current to exceed the power supply rating The display will NOT show the actual voltage and current when such resistor or voltage is applied for programming 4 4 13 Auto Parallel Operation 1 Upto five units ofthe same rating can be connected in an auto parallel combination to provide up to five times the output current capability One ofthe power supplies operates as a master and the remaining units as slaves The slave units are analog programmed by the master unit At remote operation only the master unit can be programmed by the computer while the slave units may be connected to the computer for actual voltage a
64. rrent check Turn off the power supply Connect an electronic load with suitable voltage and current rating to the output terminals as explained in paragraph 3 7 3 Turn on the power supply Vary the load current and check that the unit regulates the output voltage while the load current is smaller than the power supply current rating Further increase the load current and check that the power supply regulates the output current 4 3 5 OVP check Adjust the output voltage to zero using the front panel knob Momentarily press OVP UVP pushbutton until the OVP LED illuminates and the VOLTS display shows OUP The AMPS display will show the last setting of the OVP level Rotate the Adjust knob to 50 of the supply s voltage rating Adjust the output voltage toward it s maximum and check that the output voltage cannot be increased more than the OVP setting 4 3 6 UVP check Adjust the output voltage to the rated voltage using the front panel knob Momentarily press OVP UVP pushbutton until the UVP LED illuminates and the VOLTS display shows UUP The AMPS display will show the last setting of the UVP level Rotate the ADJUST knob to 50 of the supply s voltage rating Adjust the output voltage toward it s minimum and check that the output voltage cannot be decreased below the UVP setting 4 3 7 Foldback check Set the load current to 50 of the supply rating Momentarily press FOLD pushbutton and check that the FOLD LED illuminates Increase t
65. s that are returned for service will be calibrated at the service facility There is NO REASON to open the ZUP cover 6 5 PART REPLACEMENT AND REPAIRS As repairs are made only by the manufacturer of authorized service facilities no part replacement information will be discussed here In case of failure unusual or erratic operation of the unit contact a Nemic Lambda sales or service facility nearest you Please refer to the Nemic Lambda sales offices listed on the back cover of this user s manual 6 6 FUSE RATINGS ZUP200 Series ZUP6 33 ZUP10 20 ZUP20 10 ZUP36 6 ZUP60 3 5 ZUP80 2 5 ZUP120 1 8 T8A 250V ZUP400 Series ZUP6 66 ZUP 10 40 ZUP20 20 ZUP36 12 ZUP60 7 ZUP80 5 ZUP120 3 6 T10A 250V ZUP800 Series ZUP6 132 ZUP10 80 ZUP20 40 ZUP36 24 ZUP60 14 F20A 250V 50 ZERO UP USER S MANUAL INDEX A accables acfail accessories address adjustment alarm status amps display auto parallel automatic start B baud rate bipolar voltage buffer overflow C calibration communication constant current constant voltage cooling cv indicator cc indicator D display error code external resistor external voltage F foldback fuse G grounding H humidity Hyper Terminal 6 46 6 24 26 38 50 46 23 33 30 38 36 46 23 23 23 23 29 2 50 8 48 ID control initialization J jacks front panel L last setting memory 42 42 21 30 linking power supplies 40
66. supply are referenced to the Sense potential Therefore the circuits used to control each unit must be separated and floated from each other 2 Programming by external resistor Programming by external resistor is possible Refer to Fig 4 5 and Fig 4 6 for details 3 Programming via the communication port RS232 RS485 The communication portis isolated from the output voltage therefore power supplies connected in series can be chained using the Remote in and Remote out connectors 35 3 Series connection for bipolar output voltage 3 1 General At this operation mode two units are configured as a bipolar voltage current source Set the current limits of each power supply to the maximum that the load can handle without damage It is recommended to connect diodes in parallel to each unit output to prevent reverse voltage during start up condition or in case one of the units shuts down Each diode should be rated to at least the power supply s output current Referto Fig 4 14 forthis operating mode 5 5 POWER SUPPLY 15 5 1 5 5 POWER SUPPLY 15 5 L 1 Fig 4 14 Series connection for bipolar output 3 2 Remote programming at series operation for bipolar output voltage 1 Programming by external voltage The analog programming circuits of the ZUP power supply are referenced tothe Sense potential Therefore the circuits used to control each unit must be sepa
67. t used in Measurement Control and Laboratory environments and carries the CE mark accordingly Our importer to the EU is Coutant Lambda Limited located at Kingsley Avenue Ilfracombe Devon EX34 8ES UK Further all products covered by this declaration are manufactured by processes which ensure continued compliance of the products with the requirements of the Low voltage and the EMC directives Name of Authorized Signatory Ada i Tunes Signature of Authorized Signatory 1 Position of Authorized Signatory Managing Director Coutant Lambda Date ut Place where signed Ilfracombe UK TABLE OF CONTENTS ZUP SERIES WARRANTY un cniin con RI Mn SALLE e rd pg 1 SAFETY INSTRUCTIONS 5 5 netiis pg 2 CHAPTER 1 General Information pg 5 1 1 User manual content 1 2 Introduction 1 2 1 General description 1 2 2 Configurations 1 2 3 Control via the serial communication port 1 2 4 Output connections 1 2 5 Analog voltage programming 1 2 6 Parallel operation 1 2 7 Cooling and mechanical construction pg 6 1 3 Accessories 1 3 1 General 1 3 2 Serial link cables 1 3 3 AC cables 1 3 4 Front panel outputs option CHAPTER 2 Specifications pg 7 2 1 200W 400W Series 800W Series iplis os pee IN UM pg 9 2 2 Supplemental characteristics
68. ted The maximum potential including the output voltage that either output terminal is from ground must not exceed the rated output voltage Local or remote sense may be used In remote sense the maximum voltage drop on each wire is 0 5V for models up to 60V and 2V for the 80V and 120V models 1 2 5 Analog voltage programming Analog inputs are provided at the rear panel for analog voltage programming of output voltage and current and On Off control Inputs are provided for resistive programming of the output voltage and current 1 2 6 Parallel operation Zup units of the same output voltage and current rating can be paralleled in master slave configuration with automatic current sharing for power up purposes 1 2 7 Cooling and mechanical construction The Zup series is fan cooled Upon installation take care to allow free air flow into the power supply via the front panel and out of the power supply via the rear panel The ZUP series is contained in a compact lightweight package which allows for easy installation and space saving in the application equipment 1 3 ACCESSORIES 1 3 1 General Accessories are delivered with the power supply or separately upon ordering Below are listed possible accessories and ordering numbers PARTNo DESCRIPTION NL 100 19 rack 3U height NL 200 Dual output packing NL 101 Blank panel for 19 rack NL 102 Additional instruction manual 1 3 2 Serial link cables Serial link cable for linking p
69. that occurred during the programming of the power supply Any set bit in this register causes the prog bit in the alarm status register to be set Reading the register does not change it s content The register is cleared by DCL command Bit Name Bit No Meaning not used 1 wrong command 2 1 Indicates that an unknown string was received buffer overflow 3 T Indicates an overflow in the communication buffer wrong voltage 4 7 Indicates an attempt to program the power supply to a voltage out of specification limits wrong current 5 T Indicates an attempt to program the power supply to a current out of specification limits Table 5 7 Error codes register content 5 5 4 2 Status control commands Commands Description 5 Reads the operational status register content Returns the string OS followed by ASCII characters representing the register s content Referto table 5 5 for the register content description example OS00010000 Readsthe alarm status register content Returns the string AL followed by ASCII characters representing the register s content Refer to table 5 6 for the register content description example 100000 46 5 5 4 2 Status control commands continued Commands STP STT 2 Description Reads the programming error register content Returns the string PS followed by ASCII characters representi
70. the front and rear panel are described in this paragraph For information regarding serial port usage please referto chapter 5 The REM LED on the front panel indicates whether the power supply is in Local or Remote mode The extinguished LED indicates Local operation Ifthe LED illuminates the REM pushbutton fig 4 1 item 8 should be pressed to change the operating mode to Local 4 4 2 Constant Voltage Operation 1 In constant voltage mode the power supply maintains the output voltage at the selected value while the load current varies as required by the load 2 While the power supply is operating at constant voltage the CV LED on the front panel illuminates 3 For coarse output voltage adjustment press V A consecutively until the V LED illuminates and the VOLTS display shows FA V The AMPS display will show the output voltage setting value Rotate the ADJUST knob to set the output voltage At this mode approx 6 turns are required to adjust the entire range Approx 3sec after the adjustment the display returns to show the actual voltage and current 4 Forfine adjustment of output voltage press V A consecutively until the V LED illuminates and the VOLTS display shows SL V The AMPS display will show the output voltage setting value Rotate the ADJUST knob to set the output voltage At this mode the adjustment resolution is maximal Approx 3sec after the adjustment the display returns to show the actual voltage and current
71. tion is activated FLDO will release the protection and re arm it while FLD2 will cancel the protection If the protection has not been activated both commands are the same Returns FD followed by the Foldback protection status FD1 Foldback is armed FDO Foldback is released Sets the over voltage protection level in volts Over voltage range settings are given in table 5 3 Model MIN MAX ZUP6 XY 0 20 7 50 ZUP10 XY 00 5 13 0 ZUP20 XY 01 0 24 0 ZUP36 XY 01 8 40 0 ZUP60 XY 03 0 66 0 ZUP80 XY 04 0 88 0 ZUP120 XY 006 0 132 0 Table 5 3 Over voltage programming range Example ZUP10 XY OVP08 4 Returns the string OP followed by the present programmed over voltage protection value The over voltage range is given in table 5 3 Example OP08 4 44 5 5 3 Output control continued Commands Description 13 UVPn Sets the under voltage protection limits in volts Under voltage range settings are given in table 5 4 Model MIN MAX ZUP6 XY 0 00 5 98 ZUP10 XY 0 00 9 97 ZUP20 XY 00 0 19 9 ZUP36 XY 00 0 35 9 ZUP60 XY 00 0 59 8 ZUP80 XY 00 0 79 8 ZUP120 XY 000 0 119 8 Table 5 4 Under voltage programming range Example ZUP20 XY UVPO07 3 14 UVP Returns the string UP followed by the present programmed under voltage protection value The under voltage range is given in table 5 4 example UP07 3 15 ASTn Sets the
72. ty specification of the power supply the resistors used for programming should be stable and low noise resistors with temperature coefficient of less than 25ppm and power rating of 1 4W or more 3 Where external resistor programming is used front panel control and computer control via serial communication of the output voltage and current are disabled 30 4 OUTPUT VOLTAGE PROGRAMMING BY EXTERNAL RESISTOR Fig 4 5 shows a typical set up for programming the output voltage A variable programming resistor 0 4Kohm produces a proportional output voltage from zero to full scale In order to set the low limit a series resistor can be connected to the programming resistor For example a 1kohm series resistor will set the lower limit to 2596 of full scale In order to set the upper limit a resistor can be connected in parallel to the programming resistor The resultant programming resistance of the series parallel resistors must be between 0 and 4Kohm NOTE Resistive programming is possible for local and remote sensing 14 13 Fig 4 5 a ii ig 4 5 Constant voltage resistive programming Optional _ T8 TES sets upper limit On Off Output Good Optional VRFV sets lower limit VRFI RCVP 0 4K programming resistor 2 1 External control connector ZUP rear panel view 5 OUTPUT CURRENT PROGRAMMING BY EXTERNAL RESISTOR Fig 4 6 shows the set up for constant current resistive programming The ex
73. urrent in Ampers This programmed current is the actual output current at constant current mode or the current limit at constant voltage mode The programming range is shown in table 5 2 Use all digits for current programming Note The ZUP can accept values higher by 5 than the rating Itis recommended to set the output current to 105 of the rating if the unit is required to supply the rated current ZUP80 2 5 ZUP80 5 ZUP120 1 8 ZUP120 3 6 Table 5 2 Current programming range Example ZUP60 3 5 CUR3 000 ZUP10 40 CURO7 50 43 5 5 3 Output control continued Commands Description CUR Returns the string SA Set Amper followed by the present programmed output current The programmed value range is shown in table 5 2 example SA3 000 5 07 50 6 CUR Returns the string AA Actual Amper followed by the actual output current The actual current range is the same as the programming range example AA3 000 07 50 7 OUTn Sets the output to On or Off OUT1 Output On OUTO Output Off 8 OUT Returns OT followed by the output On Off status OT1 Output is On Output is Off 9 FLDn FLD OVPn OVP Sets the Foldback protection to On or Off FLD1 Arm the foldback protection FLDO Release the foldback protection FLD2 Cancel the foldback protection When the foldback protec
74. usly cycle between AS ON auto start on and AS OFF auto start off approx every 3sec Releasing the OUT pushbutton while AS OFF is displayed will set the power supply to safe start mode At startup the output is disabled and the output voltage and current are zero To enable the output and restore the last output voltage and current values OUT pushbutton should be momentarily pressed 4 4 10 Output Voltage amp Current programming by external resistor For resistive programming internal current sources for output voltage and or output current control supply 1mA current through external programming resistors The voltage across the programming resistors is used as a programming voltage for the power supply Resistance of 0 4kohm programs the output from 0 to full scale full scale is 105 ofthe rated voltage or current Avariable resistor can control the output over it s entire range or a combination of variable resistor and series parallel resistors can control the output over a restricted portion of it s range Alternatively aswitch can be usedto select fixed values of programming resistance to obtain a set of discrete voltages or currents Care must be taken to avoid open circuit atthe programming resistors as it will cause over voltage atthe output In this case no damage to the power supply will be caused however itis recommended to set OVP limitto a level which is safe forthe load circuitry 2 To maintain the temperature stabili
75. vice request SRTO Disable OTP service request 4 SRT Returns QT followed by the OTP service request status QT1 OTP service request enabled QTO OTP service request disabled 5 SRFn Enable or disable Foldback protection service request SRF1 Enable Foldback protection service request SRFO Disable Foldback protection service request 6 SRF Returns QF followed by the Foldback protection service request status QF 1 Foldback protection service request enabled Foldback protection service request disabled 49 CHAPTER 6 MAINTENANCE 6 1 INTRODUCTION This chapter contains maintenance and calibration information for the ZUP power supply series 6 2 UNITS UNDER WARRANTY Units requiring repair during the warranty period should be returned to a Nemic Lambda authorized service facility Refer to the address listing on the back cover of this user s manual Unauthorized repairs performed by other than authorized service facilities may void the warranty 6 3 PERIODIC MAINTENANCE No routine maintenance of the ZUP power supply is required except for periodic cleaning To clean disconnectthe unit from the AC supply and allow 30sec for discharging internal voltage The front panel and the metal surfaces should be cleaned using a dry cloth Use low pressure compressed air to blow dust from the unit 6 4 ADJUSTMENT AND CALIBRATION No internal adjustment or calibration are required Unit

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