Jntech JNP370LS-V1 Quick Installation Download Page 5

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2 Installation procedure

2.1Prepare installation tools

The following tools will be needed during inverter
installation and wire connection.
Table 2-1 recommended tools for inverter installation and
conductor installation

Sketch map Name

Recommend

specification

Function

MC4 wire

crimpers

M2.5~M8

Used for PV connector

wire core pressure

welding.

Electric drill Ф8

Used for inverter

installation plate fixed

hole drilling.

Straight

screwdriver

Ф3

Used for the AC wire

installation.

Cross

screwdriver

Ф5

Used for

disassembling inverter

cover.

Hammer

6 pound

Used for expansion
bolt

2.2 Installation Direction and spacing
dimension

The inverter shall be installed vertically or tilted backwards
with a maximum angle of 10°.

Summary of Contents for JNP370LS-V1

Page 1: ...I Quick Installation JNP370LS V1 JNP550LS V1 QI JNP 550LS V1 EN V1 0 Solar pumping inverter ...

Page 2: ...idential information about Solar pumping inverter of Supplier It strictly prohibited to disclose the document by duplicating photocopying publishing online and in other forms without SUPPLIER s permission Supplier reserves the right to change details in this publication without notice ...

Page 3: ...cal Connection 6 3 3 AC Side Electrical Connection 7 3 3 1 Single phase pump description 7 3 3 2 Capacitor removal example 9 3 4 DC side connection 11 3 5 Inverter grounding 13 3 6 Water Level Sensor Connection 14 3 6 1 Water level sensor interface define 14 3 6 2 Water level sensor connection 15 4 Disassembling 17 4 1 The Disassembling of PV Connector 17 5 Commissioning 17 5 1 Verify before Commi...

Page 4: ...d common accessories Table 1 1 description of inverter and common accessories No Description No Description 1 Solar pumping inverter 7 Packing list 2 Blue ring tool 8 Water level sensor A 3 Expansion bolt 9 Quick installation guideline 4 PV connector 10 Water level sensor B 5 Water pump connector 11 Certification of inspection 6 Sensor and communication connector Option ...

Page 5: ...tion Function MC4 wire crimpers M2 5 M8 Used for PV connector wire core pressure welding Electric drill Ф8 Used for inverter installation plate fixed hole drilling Straight screwdriver Ф3 Used for the AC wire installation Cross screwdriver Ф5 Used for disassembling inverter cover Hammer 6 pound Used for expansion bolt 2 2 Installation Direction and spacing dimension The inverter shall be installed...

Page 6: ...llation spacing dimensions are shown below Directio n Minimum space Direction Minimum space Above 100cm Sides 100cm Below 100cm Front 100cm 2 3 Installation of Inverter Step 1 Drill holes in the selected installation position with 1200mm for two holes of Ф8 ...

Page 7: ...nstallation diagram Step 2 Use hammer to make expansion bolt in the holes Step 3 Align the lifting lug of the water pump inverter with the expansion screw hang it and finally tighten the expansion bolt expansion nut ...

Page 8: ...l RS 485 communication and water level sensor terminals shown as below Figure 3 1 schematic diagram of external connection of inverter Table 3 2 connection terminal marking Terminals Description PV PV PV array DC positive negative input terminals MOTOR Output terminal connect with AC pump SENSOR Water level sensor signal input terminal optional Grounding terminal ...

Page 9: ...hibited to be replaced by AC breaker 2 Shown as right side picture DC breaker should be 2 stages 3 2 Cable Selection for Electrical Connection Table 3 4 users can select the electrical connection cable according to the following specifications Model Cable range AWG DC side AC side PV PV U V W PE JNP370L 14 12 14 12 12 JNP370LS 14 12 14 12 12 JNP550L 14 12 14 12 12 JNP550LS 14 12 14 12 12 PV PV PV ...

Page 10: ...NP370L and JNP550L drive the three phase water pump and JNP370LS and JNP550LS drive the single phase water pump Note Special precautions for driving single phase water pump as shown in 3 3 1 Fig 3 5 connection diagram of inverter water pump terminal 3 3 1 Single phase pump description Single phase pump is widely used in household and small power water delivery system with its advantages of simple ...

Page 11: ...tors one starting capacitor and one running capacitor In the connection of single phase pump this two capacitors are always connected together after that the connection is same as one capacitor pump No further description here Fig 3 6 Diagram of single phase pump inner winding Use the company JNPXLS photovoltaic pump series inverter driving customers themselves with the single phase of buy pumps n...

Page 12: ...and the auxiliary winding each lead to a line the other end to connect three wires and a ground to inverter standard accessories Ac connector remove the capacitor schematic diagram as follows Fig 3 7 Schematic diagram of removal for single phase pump 3 3 2 Capacitor removal example Step 1 Put the single pump on the open and hard ground ...

Page 13: ...ews from end cover plate with cross screwdriver and remove end cover plate Step 3 After remove end cover find the terminal connected to the capacitor lead loosen the fastening nut and remove the original wire of capacitor and motor ...

Page 14: ...e PV array should be covered with opaque materials and the DC side circuit breaker should be disconnected otherwise the PV Step 4 Prepare a four core motor extension wire fix the ground wire in the position connect the other three wires to the three terminals and fix them with nuts Finally cover it ...

Page 15: ...uts of MC4 Connector 2 Strip off the DC cable insulation layer to a length of approx 7mm Insert the exposed end of PV Cable into the connector tube and press tightly with wire crimpers Effect figure Remember Terminals and connectors match the core is not reversed 3 Pull the above finished cable with tube through the fastening nut 4 Plug it into the wiring slot until a sound being heard which indic...

Page 16: ...ector into the corresponding terminals at the bottom of the inverter respectively Figure 3 8 schematic diagram of inverter photovoltaic connection 3 5 Inverter grounding Make sure Inverter grounding terminals is properly connected with grounding ...

Page 17: ...9 schematic diagram of inverter grounding connection 3 6 Water Level Sensor Connection 3 6 1 Water level sensor interface define Water level sensor connector pins in inverter panel port are defined are shown below ...

Page 18: ...ry protection pin SY Overflow protection pin COM Dry protection and Overflow protection common pin 3 6 2 Water level sensor connection Two kinds of water level sensor you can select are shown below Sensor A Sensor B If you selected water level sensor A then water sensor installation method is shown below ...

Page 19: ...16 Figure 3 11 detail of water level sensor A Figure 3 10 detail of water level sensor A ...

Page 20: ...wn below Figure 3 12 detail of water level sensor B 4 Disassembling 4 1 The Disassembling of PV Connector Please operate according to following Operation instructions Demonstration picture DC SWITCH should be OFF before operation and This blue ring tool shall be used to disconnect MC4 ...

Page 21: ...negative mustn t be misconnect otherwise the damage may be caused to the inverter Make sure that the open circuit voltage of photovoltaic array doesn t exceed the required voltage DC Input Make sure that the DC terminals of the inverter are connected correctly and maintained consistent with the PV array AC Output Make sure inverter AC output terminal is properly connected and phase sequence is pro...

Page 22: ...ight the system can not recover the fault when the fault occurs and the fault is not eliminated the light is on STATE STATE light Yellow When the system is in abnormal state the light will be on such as photovoltaic under voltage system dry overflow WARN WARN light Red When the system is in abnormal state the light will be on such ...

Page 23: ... under high output power high output frequency as much as possible Please make sure the following condition before commissioning Ensure that the inverter is connected correctly to the AC motor Ensure that the polarity of PV arrays is correct Ensure that ac inputs R S and ground connections are correct Check whether the system pipeline is unobstructed or not Switch on the DC side circuit breakers A...

Page 24: ...f manual turn off need to turn on manually next time if last time is auto turn off inverter will auto turn on when power on 2 Inverter ON OFF is touch botton do not press hard Note 1 AC pump motor and inverter phase sequence must be corresponding if misconnection will get no or less water output When this happen should turn off inverter exchange U V W any two phases then power on again 2 First com...

Page 25: ...a Cause value Troubleshootin g State light on PV Array undervolt age Inverter shutdown when the fault appeared and will automaticall y restart Output energy from array changes Please check the input voltage from array and make sure this voltage inside inverter input voltage range Note In cloudy days morning ...

Page 26: ...e inside inverter input voltage range Note In cloudy days morning or down this situation is not malfunction Dry alarm Inverter shut down until the water level recover or protection recover time is up the machine will restart automaticall y Water level of source is lower than low level water level sensor even lower than inlet of pump 1 Please check the water level if the water level is ok please ch...

Page 27: ...ver or protection recover time is up the machine will restart automaticall y Water level in container higher than high end level sensor If this situation appears more than once please check onsite and set the water level sensor at a proper height Output over loa d Inverter shutdown and will restart automaticall y after the fault disappears Load higher than rated output power of inverter Please mak...

Page 28: ...or not 3 If this happen frequently please contact SUPPLIER Output phase lose Inverter shutdown and will restart automaticall y after the fault disappears Phase loss in inverter output 1 Please check if the output wires are proper connected and fixed 2 If this happen frequently please contact the supplier Warn light on Busbar voltage undervo ltage Inverter shutdown and will restart automaticall y a...

Page 29: ...se check the input voltage from array and make sure this voltage inside inverter input voltage range Note In cloudy days morning or down this situation is not malfunction Busbar overcurr ent Inverter shutdown and will restart automaticall y after the fault disappears Inverter inside storage reading fault Inverter hardware damage Power on again to restart if restart still show this fault means inve...

Page 30: ... restart failure IPM over heat Inverter shutdown and will restart automaticall y after the fault disappears Inverter radiator over heat hardware damage 1 If external temperature is too high to cause inverter over heat when temperature goes down inverter will restart 2 If cannot restart for a long time consider inverter hardware damage Note in Summer with high temperature this situation is not malf...

Page 31: ... if pump is damaged 2 If this happen frequently please contact SUPPLIER Motor detection fault Inverter shutdown non recov er malfunctio n No automatic ally restart only if recharged Inverter one phase or two phase is not proper connected with motor or motor damage Please check if three phase output is properly connected motor is damaged or not Initialization fault Inverter shutdown non recov er ma...

Page 32: ...29 automatic ally restart only if recharged hardware damage inverter inside hardware damage ...

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