OPERATING MANUAL
Contents
1. defective product or component parts Returned product must be accompanied by proof of the purchase date Exclusions This warranty does not apply in the event of misuse or abuse of product or as a result of unauthorized alternations or reapers It is void if the serial number is alternated defaced or removed2. the output is turned off press the OUT button to output Press the ft button to select the above display of the digital tube press the V button to select the below display of the digital tube Flexibility to switch the display of voltage V current A power P capacity C and time H If you want to open the output function when boot you need to enter debug mode In addition the following settings are also need to enter debug mode respectively 1 You need to enable the overvoltage protection OVP under voltage protection LoP over current protection OCP over power protection OPP over charging capacity protection OAH and overtime protection OFT 2 When there is a certain error of the measured voltage or current value and need to be calibrated 3 When the parameters are confused need to restore factory settings 5 3 Debug mode Enter debug mode In the normal state press the lt OUT gt key for a while you have entered the debug mode when the the upper row of digital tube displays 0 U press lt OUT gt key again the upper row of digital tubes display alternately among 0 U 1 C 2 ES 3 4 ON 5 OV 6 7 8 AH 9 Hr and 10 L each one represents a function 5 VAM7520P Voltage Meter Exit debug mode In the debug mode you can exit by pressing the lt OUT gt button for a while 5 4 The fun
3. OPERATING MANUAL VAM 520P Voltage Meter December 2013 Zhengzhou Ming He Electronic Technology Co Ltd Contents UN dori AGG ht P CE 1 2 Inspecting Package 1 9 OUIDITIGEV 1 3 1 Brief IntrodUcllon le e tr 1 S MONETURGOE Ss ae dte Rr etna t en ei ta d 2 3 Mel gt emer mre EE 2 4 Instrument Introguctlori s i n PR p ai 3 4 Stricture DescriptiokE m te et dace tot tds 3 ABS WINN BR NIRE ERE TEE 3 SS ODEON MO 4 KWN G 5 5 er COUN UM ud aoo o res eta aL Pn ecco 5 ETT 5 5 4 The functions of debug mode sese 6 6 CAULIONS aiia eo tenta eie wed eM ten e die sete obese P tens 8 7 Wattanty anid 8 VAM7520P Voltage Meter 1 Contact Address No 96 Rui Da Rd Zhengzhou China Tel 86 371 86106382 Fax 86 371 86106382 Zip 450001 E mail sales mhinstek com Website www mhinstek com 2 Inspecting Package Contents When you get a new VAM7520P Voltage Meter please inspect the instrument as follows 2 1 Check if there is damage due to transportation If the package is damaged please retain them until the instrument and accessories are tested 2 2 Check package contents Contents of the
4. case are as bellows if the content does not match with the packing list or the instrument is damaged please contact us VAM7520P Voltage Meter 1pc User manual pdf 1pc 2 3 Check the machine If the machine was damaged did not work properly or failed to pass performance tests please contact your dealer or our company 3 Summary 3 1 Brief introduction VAM7520P is a new ype voltage meter which can measure 1 VAM7520P Voltage Meter voltage current power charging capacity and time at the same time It also can set the over voltage protection over current protection over power protection over charging capacity protection over time protection and low voltage protection The voltage meter adopts two groups of LED digital tubes to display the data The meter can switch the display among different physical quantities This meter is ideal for monitoring the output voltage and current as well as the battery charge and discharge applications 3 2 Main function 1 Dual display for voltage and current and available for switching display power charge capacity and time 2 Flexible calibration function you can calibrate the voltage and current value by yourself 3 4 bit LED digital tube in which 3 bit for measuring and one bit for the unit 4 With an output shutdown function key you can turn on or off the output flexibly 5 With over voltage low voltage over current over power over charging and over time protection functio
5. ctions of debug mode 5 4 1 0 U is the calibration of the voltage value the voltage value displays in the digital tube is the current measure value We can choose two points to calibrate the voltage Generally we choose 32V as the high voltage point 12V as the low voltage point The demarcation criterion of highs and lows is 20V Above 20V is the high point voltage in default less than 20V is the low point voltage in default Now we can compare to a standard voltmeter press key to increase the voltage measure press v key to decrease the voltage measure two points will affect each other After adjusting back and forth 2 3 times the measured values can be consistent with the values of the standard voltmeter 5 4 2 1 C is the calibration of the current value the current value displays in the digital tube is the current measure value We can choose two points to calibrate the voltage Generally we choose 3A as the high current point 0 1A as the low current point The demarcation criterion of highs and lows is 2A Above 2A is the high point current in default less than 2A is the low point current in default Now we can compare to a standard ammeter press key to increase the current measure press amp key to decrease the current measure two points will affect each other After adjusting back and forth 2 3 times the measured values can be consistent with the values of the standard ammeter 5 4 3 2 ES is the function to save
6. ctly three wire system requires an external power supply for the instrument 4 2 1 Two wire wiring diagram and methods 4 2 Wiring diagram of two wire There are three terminals on the right side top down they are IN and OUT the is the public terminal of IN and OUT Be careful not to reverse the jumper cap in the lower left corner should be picked up on the 2W 4 2 2 Three wire wiring diagram and methods IN OUT DC12V 60V Vext 4 3 Wiring diagram of three wire There are three terminals on the right side top down they are IN and OUT the is the public terminal of IN and OUT Be careful not to reverse the jumper cap in the lower left corner should be picked up on the 3W Two terminals Vext at the left end require an external power supply of the meter the voltage of the external power supply is DC12V 60 V three wire system can measure voltage under 10V 5 Operation VAM7520P Voltage Meter 5 1 Wiring Select the appropriate wiring according to the range of the measured voltage ensuring input voltage is within the tolerance range of the instrument Note The input voltage range of two wire 10V 75V The input voltage range of three wire OV 75V 5 2 Output Power on the above digital tube will display voltage value in default the below digital tube will display OFF in default it means that
7. ing the parameters it need tobe saved in 2 ES If you have set the protection function of the meter and want to return to the not enable state you can press button for a while under the normal mode 6 Cautions 6 1 Don t exceed the range of the meter otherwise it will damage the module 2 Connect input and output properly it is forbid to reverse connection otherwise it will not measure correctly 6 3 Operating temperature is from 10 to 50 degrees Celsius and storage temperature is from 20 to 70 degrees Celsius make sure the instrument kept dry 6 4 Do not attempt to disassemble the instrument destroying the package will void the warranty this instrument has no user serviceable parts inside if it need to be repaired you can repair it by specifying outlets or return to the factory for repair 6 5 Do not move the instrument violently as it is working to avoid irreparable damage to the internal circuitry 7 Warranty and service Thank you for purchasing our products To maximize the use of the new product features we recommend that you take the following steps 1 Read safe and efficient use instruction 2 Read the warranty terms and conditions We warrants to the original purchaser that its product and the component parts VAM7520P Voltage Meter thereof will be free from defects in workmanship and materials for a period of one year from the data of purchase We will repair or replace at its option
8. ns 3 3 Technical data Item Parameter Two wire system 10V 75V Input voltage Three wire system 0 75V Output current 0 20A Display 4 bit LED 3 bit for value and 1 bit for unit Voltage 0 01V Current 0 01A Pisplay Power 0 01W resolution Capacity 0 01AH Time 0 01H Voltage 1 2 bytes Accuracy Current 2 5 bytes Measuring rate 5times s VAM7520P Voltage Meter OVP Over voltage 0 01V 75V protection OPP Over power 0 01W 9 99kW P represents W protection represents kW OCP Over current 0 01 20A Protection protection types OAH Over charge 6 O1 AHSOAH protection oe 0 01 hour 99 9 hour protection LoP Low voltage protection Dimensions W H D 79x43x52 mm Installing hole mm 76 5 39 2 mm 4 2 Wiring 3 1 Technical data 4 Instrument Introduction 4 1 Structure Description Item Introduction 1 Button 2 LED digital tube 3 Operation Tips 4 1 The introduction of VAM7520P On the back of the meter there are three terminals on the right they are IN and OUT the F is the public terminal of IN and OUT the 3 VAM7520P Voltage Meter Vext on the left side of the meter it is used for three wire system This meter has two wire and three wire dual input methods Two wire system can connect the meter to the circuit dire
9. parameters When you need to save parameters adjusting to the 2 ES the digital tube displays n by default indicating that don t save the parameters you can adjust to y by pressing for 9 then press OUT gt the meter will save parameters and exit the debug mode automatically VAM7520P Voltage Meter 5 4 4 r is to restore factory settings if you want to return to the initial value you can adjust to y by pressing fto V then press OUT gt it will restore to the factory setting 5 4 5 4 ON is to set whether the output is open or not when boot the default display is n indicating not open if you want to output when boot you can adjust to y by pressing fto then save the parameters 5 4 6 5 OV over voltage protection OVP if you have set the OVP value when the input voltage exceed the setting value the machine will automatically cut off the output at the same time the screen displays protection type is OVP press any key to return to normal 5 4 7 6 OP over power protection OPP if you have set the OPP value when the actual output power exceed the setting power the machine will automatically cut off the output at the same time the screen displays protection type is OPP press any key to return to normal 5 4 8 7 OC over current protection OCP if you have set the OCP value when the output current exceed the setting value the machine will automa
10. tically cut off the output at the same time the screen displays protection type is OCP press any key to return to normal 5 4 9 8 AH over charging capacity protection OAH if you have set the OAH value when the output AH exceed the setting value the machine will automatically cut off the output at the same time the screen displays protection type is OAH What should be noted is that the AH value is a cumulative value once exceed it will not output again at this time you can press tor a while to clear electric quantity value and time value to ensure that the electric quantity can be output again 5 4 10 9 Hr over time protection OFT if you have set the OFT value when the output time exceed the setting time the machine will automatically cut off the output at the same time the screen displays protection type is OFT If you need to output again you can press amp for a while to clear the time VAM7520P Voltage Meter 5 4 11 10 L low voltage protection LoP if you have set the LoP value when the output voltage is less than the setting voltage the machine will automatically cut off the output at the same time the screen display protection type is LoP press any key to return to normal Attentions 5 OV to 10 L represent the different protection setting values the default is 0 indicating don t use the protection functions the non zero parameter means using the protection function after sett
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