3700 SERIES user manual - Madell Tech

1 30 3700 SERIES user MANUAL3700 SERIES Programmable DC Electronic LoadVERSION 1 General General Dimension and Front Back 2 General Function Main The Operation of the Store Data Recall Data Switch ON/OFF of power The function of the Set up the Limit Set up the Limit Program Set up the Set up Communication Address (0~254).. Set up Locking Set up SAVE EXIT ElectronicLoad SoftwareChapter 1 System Start the Uninstall the 2 Functions COM Port Set The Current Limit and the Power Limit The Current Value, the Power Value and the Resistance Value Programming Setting The Explanation to the Receiving 3 Maintenance and DC Electronic Load3700 SERIES user manual1 3700 SERIES user MANUAL3700 SERIES Programmable DC Electronic LoadVERSION switching on the DC Electronic load, the protective earth terminal of this instru-ment must be connected to the protective conductor of the AC line power cord.

2 The AC lineplug shall be inserted only in a socket outlet provided with a negated by the use of an extensioncord (or power cable) without a protective grounding following general safety precautions must be observed during all phases of operation,service, and repair of this instrument. Failure to comply with these precautions or withspecific warnings elsewhere in this manual violates safety standards of design, manufacture,and intended use of the instrument. The Manufacturer assumes no liability for the customer sfailure to comply with these the InstrumentThis product is provided with a protective earth terminal. To minimize shock hazard,the instrument chassis and cabinet mush be connected to an electrical ground. The in strumentmust be connected to the AC Electronic Load mains through a three-conductor power cable,with the third wire firmly connected to an electrical ground (safety ground) at the poweroutlet.

3 For instruments designed to be hard-wired to the AC power lines (supply mains),connect the protective earth terminal to a protective conductor before any other connection ismade. Any interruption of the protective (grounding) conductor or discon nection of theprotective earth terminal will cause a potential shock hazard that could result in personalinjury. If the instrument is to be energized via an external autotransformer for voltage reduction,be certain that the autotransformer common ter minal is connected to the neutral (earthed pole)of the AC power lines (supply mains).Keep Away From Live CircuitsOperating personnel must not remove instrument covers. Component replacement andinternal adjustments must be made by qualified service personnel. Do not components withpower cable connected.

4 Under certain conditions, dangerous voltages may exist even with thepower cable removed. To avoid injuries, always disconnect power, discharge circuits andremove external voltage sources before touching components. Do Not Substitute Parts orModify Instrument Because of the danger of introduction additional hazards, do not installsubstitute parts or perform any unauthorized modification to the instrument. Return theinstrument to a qualified dealer for service and repair to ensure that safety features are main-tained. CAUTIONSAFETY NOTES2 3700 SERIES user MANUAL3700 SERIES Programmable DC Electronic LoadVERSION Chapter 1 General General Introduction3700 SERIES Programmable DC Electronic Load is a kind of mini-size DC programmableelectronic load with nice appearance.

5 Also it is equipped with back-light LCD display, numberkeypad and rotary code switch which let it much easier to use. Voltage, current and power canall be displayed on the LCD or computer and tableau is distinct and clear. It can be operated atcon stant current mode, constant resistance mode and constant power mode. It is an essentialin-strument for scientific research, education, laboratory, test, service and so on Specification Type 3710A 3711A Input quantity 1 1 Input voltage DC 0~360V DC 0~360V Input current 0~30A 0~30A Input power 0~150W 0~300W Voltage resolution ( +3mV) ( +30mV) ( +300mV)

6 Current resolution ( +3mA) ( +30mA) Lowest Conductiue Resistance <= Ripple <=10mVpp Communication RS232/RS485 * Monitor software Free software VC++ / VB / DELPHI / LABVIEW / COM parts Memory 10 points EEPROM Protective mode Over voltage/over current/over power/over heat/polarity-reversing connection Power voltage AC 110/220 available (60/50HZ) Weight Accessories Software, users manual , AC power cable, handlebars Communication cable for RS232 Communication cable for RS485 Mounting rack Purchase Option Parts3 3700 SERIES user MANUAL3700 SERIES Programmable DC Electronic LoadVERSION Features1.

7 LCD display with back Number High resolution at Protection for over Protection for over Adjustable constant resistance, constant current and constant power Can be set by number key or rotary code Power shut-down memory function9. Monitored by PC Mini-size and light Can be used in parallel Programmable Dimension and Structure DimensionFig 1 Dimension of 3700 SERIES Programmable DC electronic load4 3700 SERIES user MANUAL3700 SERIES Programmable DC Electronic LoadVERSION Structure Front viewFront panel is for users to operate, andthere is one LCD display, one numberkeypad and one rotary keypad. Pleasesee the following picture. Fig2. Front view of 3700 SERIES DC electronic load1.

8 LCD display Fig3. LCD Display of 3700 SERIES electronic load2. Arrangement of the KeyboardIn common state, the keyboard will executethe prompting functions of the black in special mode, it will change into thefunctions of the orange color words. Fig4. Key board of 3700 SERIES DC electronic OF ISThe upper line:The real current value,voltage value and output status(ON/OFF represent power source output status)The lower line:The output power rated (PS, RS, SW) represents constant current,constant power, constant resistance and program ~9: The number keysOut ON/OFF: Switch ON/OFF the outputStore: Save the current setting valueR-set: Set up constant resistance valueSTART: Begin to program output I-set: Set up constant current valueSTOP: Stop to program output P-set: Set up constant power valueRecall: Read the saved setting valueMenu: Menu function operation : The up moving key : The down moving keyV/A: Represent V at the voltage mode, represent A at the current mA.

9 Represent mV at the voltage mode, and represent mA at the current 3700 SERIES user MANUAL3700 SERIES Programmable DC Electronic LoadVERSION Rotary code switch and function keys : The left moving key % : The right moving key ESC: Can be used to exit any working state OK: Confirmation key Rotary SW: The rotation key Fig5.

10 Rotary and function Back viewFig6. Back view The fuse can be changed easily by using a small screw driver. Please use a fuse within the range of wrapWire rackPC connectioninterfacePower supply plugFuseChange over Switch6 3700 SERIES user MANUAL3700 SERIES Programmable DC Electronic LoadVERSION 2 General operation1. Connect the electronic load with PC Fig Connect the electronic load with Function introduction Main functions1. Set up a constant current output2. Set up a constant power output4. Set up a constant resistance output5. Store 10 sets of date which had been set up6. Recall the stored data7. Start/Stop8. Switch ON/OFF the electronic load output Sub-functions1. Set up maximum current2. Set up maximum power3.