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TERAL INC.

Instruction Manual

Estimated Terminal Pressure
Constant Control of Water
Supply Unit

Thank you very much for purchasing the TERAL water supply unit.

In order to use the water supply unit appropriately, read this instruction manual
before using, and do not perform operation, maintenance and inspection before
understanding the description in this manual thoroughly.

For safety purpose, observe the cautions and warnings in this instruction manual
and those on the labels affixed on the water supply unit.

Keep this manual carefully at hand where it can be consulted at any time of
operation, maintenance and inspection of the water supply unit.

To whom performing utility work:

Be sure to submit this manual to the customer performing
operation, maintenance and inspection of the water supply unit.

Important Notice

Estimated Terminal Pressure Constant
Control of Water Supply Unit

NX-VFC/NX-VFC-e Multiple pump control

Содержание NX-VFC

Страница 1: ...l thoroughly For safety purpose observe the cautions and warnings in this instruction manual and those on the labels affixed on the water supply unit Keep this manual carefully at hand where it can be consulted at any time of operation maintenance and inspection of the water supply unit To whom performing utility work Be sure to submit this manual to the customer performing operation maintenance a...

Страница 2: ...d for sending engineer s in such a case shall be borne by the user 5 If the cause of the failure is unclear necessary actions shall be determined through mutual consultation 6 In order to improve performance some parts and or components of the product may be changed without prior notice In addition upon repairs of the product Teral Inc may use recycled parts that conform to our quality standards o...

Страница 3: ... Preparation for operation 5 1 5 1 Points to be checked before test operation 5 1 5 2 Turning on the power 5 2 6 Test operation 6 2 6 1 Check items related to manual operation 6 2 6 2 Check items related to automatic operation 6 3 7 Basic operations and indications settings 7 1 7 1 Pump Operation 7 1 7 2 Selecting a receiver tank 7 2 7 3 Selecting the operation of the inflow solenoid valve 7 3 7 4...

Страница 4: ...1 2 Safety precautions The following are important instructions about safety Be sure to observe these precautions Danger Once the main power is turned on do not touch any live parts inside or outside the control panel A high voltage applied to live parts causes a serious electric shock Warning Properly move the unit according to lifting instructions Otherwise the unit may fall resulting in injury ...

Страница 5: ...nts If you need to carry out work that requires disassembly of the unit such as replacement of parts repairs or inspection ask the vendor or the service center specified by Teral inc If unskilled personnel carry out the work that requires special knowledge it may lead to an accident and or failures Caution Do not use the unit outside the range of the product specifications Otherwise it may lead to...

Страница 6: ...carry out inspection according to the maintenance checklist Otherwise you cannot prevent potential failures thus leading to a higher risk of accidents Replace the packing and O rings during inspection involving disassembly Otherwise it may lead to water leakage Before disassembling shut the suction and discharge sluice valves and then discharge pressured water from the pump and the piping Otherwis...

Страница 7: ... Ĳ Ĭ 0 2WOR ĭ 7PKV FKUEJCTIG PQOKPCN FKCOGVGT Į UVKOCVGF VGTOKPCN RTGUUWTG EQPUVCPV EQPVTQN QH YCVGT UWRRN WPKV į 2WOR PQOKPCN FKCOGVGT İ 0Q QH RWOR UVCIG ı 1WVRWV Ĳ 1RGTCVKQP OQFG ĳ QVQT GHHKEKGPE 9 6 6 0QPG G RWOR 2CTCNNGN RWOR 4QVCVKQP RWOR 2CTCNNGN RWOR 4QVCVKQP RWOR 2CTCNNGN RWOR 4QVCVKQP RWOR 2CTCNNGN RWOR 4QVCVKQP RWOR 2CTCNNGN RWOR 4QVCVKQP RWOR 2CTCNNGN RWOR 4QVCVKQP 5VCPFCTF GHHKEKGPF GS...

Страница 8: ...Hz Paint color Common base Munsell N 5 Pressure tank Munsell 10Y5 5 0 5 Pressure tank Model DPT20 20L diaphragm tank Pressure detection device Pressure transmitter Transmission system 5 VDC 3 wire system Output voltage 0 5 to 3 5 V DC Control panel Model BQNXC type Motor Protection Inverter with electronic thermal protection Normal indications Indicator lamp Power supply Pump operation per pump Pu...

Страница 9: ...pipe 䐤 Discharge elbow The discharge elbow has a built in cushion check valve and is equipped with the flow switch㻌䐦 Inside the elbow a bypass is provided so as to make the water reverse flow during maintenance by opening 䐥 Gate valve The gate valve is used for maintenance and is provided for each pump 䐦 Flow switch The flow switch outputs a signal to stop the pump when the water flow rate is not...

Страница 10: ...the setting and other modes ս No 2 Manual Back switch Press the switch to run the pump No 2 in the manual mode The switch is also used as the Back switch in the setting and other modes վ Manual switch No 3 to 5 The switch is to manually operate the pumps No 3 to 5 տ Reset switch The switch is used to reset an alarm Generated alarms can be reset by pressing the switch once the cause of the alarm is...

Страница 11: ... ښ Უ 4 Ტ ښ Უ 4 Ტ ښ Უ 4 Ტ ښ Უ Сࣂؕெ 08 08 08 08 08 6 Ტ Უ 40 40 40 40 40 ŠᚡӭƷᛟଢ 6 ᩓเᇢ Ө 08 ǤȳȐȸǿ ᩓȖȬȸǫ 4 щྙોծȪǢǯȈȫ ǪȗǷȧȳ 40 ȩǸǪȎǤǺȕǣȫǿ СࣂႴƷನ ᢿԼ Ტ ƸȝȳȗӨૠ ӨƷȦȋȃȈƷǋƷưƢᲣ DCR5 Back side DCR4 Back side DCR3 Back side DCR2 Back side DCR1 Back side TB1 Side wall Control board 䕔 Description of Codes TB1 Power terminal INV1 2 3 4 5 Inverter ELCB1 2 3 4 5 Earth leakage DCR1 2 3 4 5 Power factor improvement reac...

Страница 12: ...CN9 Flow switch for pump No 2 CN19 High temperature sensor No 4 CN10 Flow switch for pump No 3 CN20 High temperature sensor No 5 1 For models fitted with outdoor cover this sensor is connected depending on the specifications Table 3 2 4 b Codes and application of input output terminal block Code Application Code Application IL1 and IL2 Interlocking signal B1 to B8 Alarm signal output 1E0 to 1E4 Re...

Страница 13: ...r pump Unit times S Number of start times of the unit Number of starts on the previous day S Alarm log 5 latest alarms S Interlocking in operation 㸫 S Alarm indications Receiver tank full No E001 S Receiver tank low No E002 S Dry run prevention No E003 S Electrode failure No E004 S Start frequency failure No E006 S Pressure transmitter 1 failure No E051 S Control panel high temperature No E070 O E...

Страница 14: ...5 0 9 74 63 0 73 7 4 0 06 to 1 35 50 to 90 0 44 4 5 65 125 NX 125VFC652 3 7T x 3 4 e 3 7 1 5 22 19 0 24 2 4 0 06 to 1 66 18 to 30 0 15 1 5 NX 125VFC652 5 5T x 3 4 e 5 5 1 5 35 30 0 34 3 5 0 06 to 1 83 25 to42 0 22 2 2 NX 125VFC653 7 5T x 3 4 e 7 5 1 5 51 43 0 50 5 1 0 06 to 1 72 41 to 71 0 35 3 6 4 pump Parallel 4 5 pump Rotation 40 80 NX 80VFC401 1 1F x 4 5 e 1 1 3 phase䡡 200 50Hz 3 phase 200 220...

Страница 15: ...6 to 1 39 47 to 88 0 41 4 2 65 125 NX 125VFC652 3 7T x 3 4 e 3 7 1 5 21 18 0 28 2 9 0 06 to 1 73 16 to 31 0 14 1 4 NX 125VFC652 5 5T x 3 4 e 5 5 1 5 34 29 0 41 4 2 0 06 to 1 79 25 to 48 0 22 2 2 NX 125VFC653 7 5T x 3 4 e 7 5 1 5 50 43 0 65 6 6 0 06 to 1 70 41 to 77 0 35 3 6 4 pump Parallel 4 5 pump Rotation 40 80 NX 80VFC401 1 1F x 4 5 e 1 1 3 phase䡡 200 50Hz 3 phase 200 220 60Hz 0 8 18 15 0 23 2 ...

Страница 16: ...ion 3 1 Specifications of the water supply unit a place that is not exposed to the wind or rain a dry well ventilated environment which as free of dust or moisture as possible a location where unauthorized persons cannot easily enter or operate the product a location as close to the water source as possible so that the suction pipe can be short and a location where mainance can be conducted easily...

Страница 17: ...short and straight as possible with minimal bends 6 To minimize the piping loss the bore of the suction pipes h must be equal to or one size larger than that of the pump Pay special attention because the flow rate of the subsequently activated pump exceeds the value devided the maximum water usage by the maximun number of paralleled units 7 For maintenance be sure to attach sluice valves i to the ...

Страница 18: ...side of the water supply unit be sure to install a ground fault interrupter dedicated to this unit Check the capacity of the ground fault interrupter fitted inside the control panel and then select a ground fault interrupter on the power supply side in consideration of protection coordination 2 Be sure to attach a ground wire to prevent an electric shock Connect the ground wire to the ground termi...

Страница 19: ...iameter to the wire inlet ports to protect the wires or use conduit tubes 1 Wiring work for water level control Referring to the following table connect wires to receiver tank electrodes Ball tap type Table 4 3 2 a Inflow solenoid valve type Table 4 3 2 b Note The Tank Selection setting is set to No tank before shipment Before starting the operation of the pumps with receiver tank electrodes conne...

Страница 20: ...P101 5 Wiring pattern Terminal block for receiver tank No 1 Electrodes for receiver tank Terminal block for receiver tank No 1 Electrodes for receiver tank No 1 Terminal block for receiver tank No 2 Electrodes for receiver tank No 2 Wires Full water level Dry run recovery Dry run prevention Low water level Wires Full water level Dry run recovery Dry run prevention Low water level Wires Full water ...

Страница 21: ...tting the parameter P103 to the type Caution Provide a ground electrode dedicated to the electrodes for the inflow solenoid valve Wires Dry run prevention Dry run recovery Low water level Full water level Inflow SV open Inflow SV closed Wires Dry run prevention Dry run recovery Low water level Full water level Inflow SV open Inflow SV closed Wires Full water level Dry run recovery Dry run preventi...

Страница 22: ...and the setting method refer to 7 5 Parameter setting External output terminals Control board I O terminal block B6 B7 B8 MC M1 M2 M3 M4 M5 Power supply 3 failure 4 failure 1 operation 3 operation 4 operation B5 B4 B3 Trouble Receiver tank low Racing prevention Receiver tank full B2 2 failure B1 1 failure BC 5 failure 2 operation Power supply 5 operation Fig 4 3 2 External output terminals Paramet...

Страница 23: ... close each sluice valve on the discharge side 3 Check that the TJ valve is open If the TJ valve is shut the water supply unit does not run normally 4 Make sure that the bypass of the check valve is closed Caution When operating the pump close the bypass of the check valve If the bypass is opened the check valve will not function 5 Manually turn the pump to make sure that it can be rotated smoothl...

Страница 24: ...ard is turned on 6 At that time the initial set values and other information are shown on the display of the panel in the following order c Program version When the power is supplied to the board the system shows the version of the installed control program twice Note that the program version is subject to change without notice d Initial check monitor When the power is turned on the system checks ...

Страница 25: ...e Priming condition if you hear water flowing or not 3 While confirming that the pump is running properly gradually open the sluice valve of the test pipe until air is completely removed from the pump Warning Do not run the pump continuously for over one minute while the sluice valve on the discharge line is shut zero discharge operation Otherwise the temperature and pressure will increase inside ...

Страница 26: ...amount Q3 the discharge pressure is changed from PL to PH by controlling the rotating speed with the inverter according to the increase decreased in water consumption which makes the estimated terminal pressure constant controlled 3 When the water consumption increases to near the water supply amount of the 2nd parallel pump Q2 the 2nd pump starts operating 4 If the water supply amount changes eve...

Страница 27: ...lect this mode normally The system enables the setting of Manual mode or Automatic mode one second after the indicator lamp comes on 7 1 2 Manual operation In the manual mode you can start and stop each pump with the Confirm 1 Manual Back 2 Manual 3 Manual 4 Manual or 5 Manual switches on the operation panel You can also change the operation frequency of the corresponding pump with the switches on...

Страница 28: ... this mode Also select this mode to clean the water tank No 2 in the Common mode No 1 No 2 Com mon Common Select this mode to operate 2 receiver tanks To select this mode provide a communicating tube between the tanks to make the water levels of both the tanks equal No 1 No 2 Com mon Tank No 2 This mode is to select the water tank No 2 Select this mode when cleaning the water tank No 1 in Common m...

Страница 29: ... the system enables the setting in one second after the indicator lamp comes on Note For the electrode circuit and the solenoid valve circuit to be used see Table 4 3 2 Setting the Tank Selection to No tank turns off all the indicator lamps for the Solenoid Valve Operation setting and disables the operation of the solenoid valve Then if you change the Tank Selection to any options other than No ta...

Страница 30: ...ounter starts when the power is turned on When the counter exceeds 999 it is scrolled for display Basic information 7 5 Power voltage The power voltage detected in the inverter section is displayed Indication unit V Basic information 7 5 Alarm log Up to past 5 alarm histories are displayed Basic information 7 5 7 6 Operation frequency Operation frequency during automatic operation for each pump is...

Страница 31: ...earing or Freeze proofing in progress are indicated only when the necessary conditions are met The Number of starts time on the previous day remains 0 for 24 hours after the power is turned on Fig 7 4 1 b Basic information display Changing the display item Interlocking in operation displayed An alarm appearing displayed Ex 䚷E002 Receiver tank low occurring Pressure in discharge piping displayed Ex...

Страница 32: ...e operation time and Cumulative number of starts are retained even when the power is turned off Note that because the data is written into the memory device only once every 2 hours unsaved new information within up to 2 hours is lost when the power is turned off Fig 7 4 3 A Indications of pump information Cumulative operation time of n e g 95 hours Cumulative number of starts of n e g 101 times n ...

Страница 33: ...saving operation setting on on enables energy saving operation off disables energy saving operation Extended P100 External relay output pattern 0 0 to 4 Æ refer to 7 5 4 1 P101 Number of water level electrodes 4 4 4 poles 5 5 poles P102 5P electrode pattern 0 0 Standard 1 Special P103 Solenoid valve type 0 0 Opened when power is turned on 1 Closed when power is turned on P104 Solenoid valve contro...

Страница 34: ... parameter selection screen from the extended parameter selection screen press the Back 2 Manual switch e Changing a set value Press the Confirm 1 Manual switch on the parameter selection screen to enter the set value change screen Only the preset value is shown in the set value change screen Press the 1 or 1 switch to change the set value Note Extended parameters can be changed only when the oper...

Страница 35: ...ion screen The item set and value set are alternately displayed Extended parameters Basic parameters Select a parameter with these switches The change of the setting value is canceled Setting value change screen Only the preset value is displayed The change of setting value is beingconfirmed The display flashes three times Upon beep sound the value is written into the memory Change the setting val...

Страница 36: ... otherwise specified the standard value of the unit is set before shipment see the Minimum sustained head column for standard models in 3 4 Specification tables Caution Properly make the settings depending on the conditions of use Incorrect settings may hinder the normal operation of the water supply unit 3 Operation permission setting Setting for permission for No 1 run Setting for permission for...

Страница 37: ...n Initial setting Enables the energy saving operation Remarks If the energy saving operation is disabled the pump stop check period is set to 60 seconds 7 5 4 Extended parameters The following are extended parameters for setting or adjusting various functions of the water supply unit Note Extended parameters can be changed only when the operation mode is set to Stop Therefore make the settings bef...

Страница 38: ...to 5 Discharge pressure abnormal drop Electric leak INV trip High temperature Flow switch failure 2 The Trouble signal is output if one of the following alarms occurs Electrode failure Start frequency failure Pressure transmitter 1 failure Control panel high temperature EEPROM error 3 The Serious failure signal is output if no pumps can run in automatic mode in the event of an error Note that the ...

Страница 39: ... of Water Level Electrode Bars setting is set to 5 electrode bars Adjustable range 0 Standard 1 Special Initial setting 0 Standard If you specify the other value upon placing an order the specified value is preset in the parameter Remarks This setting is ignored when 4 electrode bars are selected in P101 4 Solenoid valve type setting Solenoid valve type setting Function Seletcts the type of the so...

Страница 40: ...he interlock mechanism when the contact is closed 1 No voltage b contact activates the interlock mechanism when the contact is open Initial setting 0 No voltage a contact If you specify the other value upon placing an order the specified value is preset in the parameter Remarks When the system is in a state of suspension after a interlock signal has been input the message appears on the display If...

Страница 41: ...requency failure alarm Adjustable range 0 No detection 1 Detection Initial setting 1 Detection If you specify the other value upon placing an order the specified value is preset in the parameter Remarks 10 Water level alarm reset setting Water level alarm reset setting Function Seletcts the method to reset the water level alarms Receiver tank full Receiver tank low and Dry run prevention Manual re...

Страница 42: ...e pump d If you have a backup pump run it from time to time to make it available for operation at any time Caution Ensure to carry out a daily periodic inspection according to the checklist Otherwise it may be impossible to prevent potential failures and accidents and it also shortens the product life Warning If any problem is found during inspection immediately stop operation and remove the cause...

Страница 43: ...rnally via M2 and MC no voltage a contact in inspection mode only when the External Relay Output Pattern setting parameter P100 is set to 4 No signals are output externally when the External Relay Output Pattern setting is set to a value between 0 and 3 e Other operations Other operations are carried out in the same way as in normal mode Fig 8 2 Identifying inspection in progress This figure shows...

Страница 44: ...tightened 䕿 Trace of heating Visual check No discoloration 䕿 Adhesion of dust damage Visual check No dust or damage 䕿 Cover and its installation status Open close the cover By hand Smoothly opens closes 䕿 Loose connections Tighten Securely tightened 䕿 Structure and appearance Insulator Visual check No cracks or deformation 䕿 Inverter Looseness of screws Tighten Securely tightened 䕿 Inverter n Ever...

Страница 45: ...condition 䕿 Liner ring m x n 1 Every 3 years Guide vane Clogging with foreign matter wear damage Disassem ble and inspect No abnormal condition 䕿 Main shaft and its surrounding area Smooth rotation Rotate manually Smoothly rotates 䕿 Bearing 2 Heat noise vibration Touch No abnormal condition 䕿 Bearing 2n Every 3 years or after 15000 hrs of continuous operation Winding resistance Resistance between ...

Страница 46: ...rature E006 Start frequency failure E 05 No flow switch failure E051 Pressure transmitter 1 failure E 11 No overcurrent E070 Control panel high temperature E 12 No overvoltage E080 EEPROM error E 13 No stall prevention E 14 No inverter overload E 15 No open phase output E 16 No inverter overheat E 17 No communication failure E 18 No inverter trouble 1 E 19 No inverter trouble 2 should be replaced ...

Страница 47: ...set the Solenoid Valve Type to the type of the inflow solenoid valve in use Poor connection or disconnection of the electrode wiring Check and or correct the electrode wiring Poor connection of the electrode holder section Check and or correct the electrode holder section E004 Electrode failure Wrong electrode wiring Check and or correct the electrode wiring Poor connection or disconnection of the...

Страница 48: ...ump motor or the disconnection of the power line the pump does not run or the motor rotates in reverse Check the rotation direction Check and or correct the wiring If it is necessary to disassemble and inspect the pump contact us or the service company Because the suction piping pump or other sections are clogged with foreign matter the flow passage is blocked and the pump cannot lift water It is ...

Страница 49: ...verload No 4 inverter overload No 5 inverter overload An overload has occurred because the unit is running at a flow rate outside the specified range Adjust the load so that it falls within the specified range An overcurrent has occurred because of damage to the bearings It is necessary to replace the bearings Contact us or the service company An overcurrent has occurred because foreign matter is ...

Страница 50: ...the cooling fan Contact us or the service company E118 E218 E318 E418 E518 No 1 communication failure No 2 communication failure No 3 communication failure No 4 communication failure No 5 communication failure A cause other than electric leak has turned off the ground fault interrupter Turn on the ground fault interrupter The communication connector is coming off Firmly insert the connector E119 E...

Страница 51: ...elief pipe does not enter the suction pipe 3 Fully open the valve d during operation Water flows at a rate of about 10 L min 4 Ensure to install the suction pipe e for each pump and provide a rising slope at least 1 100 degrees leading up to each pump to prevent the formation of air pockets inside the pipe Furthermore install joints in a way that no air enters from there Pay special attention beca...

Страница 52: ...in alignment with the notch of the top plate support 䐠 Next fix the top board 䐧 and the top board support䐠 with the decorative screw 䐩 Decorative screw 䐩x4pcs Hexagon bolt 䐫x4pcs 8 When disassembling the outdoor cover perform in the reverse order Caution Do not steop on the outside cover Do not place any items on the outside cover Do not remove the inspection window Do not disassemble the outside ...

Страница 53: ...Head Office 230 Moriwake Miyuki cho Fukuyama city Hiroshima 720 0003 Japan Tel 81 84 955 1111 Fax 81 84 955 5777 www teral net 2017 06 E IMN 00289 000 T ...

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