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Novatek UBZ-304 Operating Manual

Universal motor protection unit
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NOVATEK-ELECTRO LTD
Intelligent Industrial Electronics
UNIVERSAL MOTOR PROTECTION
Quality control system on the production complies with requirements ISO 9001:2008
Company NOVATEK-ELECTRO LTD. thanks you for purchasing our products.
You will be able to use properly the product after carefully studying the Operating Manual.
You will be able to use properly the product after carefully studying the Operating Manual.
Keep the Operating Manual throughout the service life of the product.
Keep the Operating Manual throughout the service life of the product.
UNIT
UBZ-304
OPERATING MANUAL

Dear customer,
Dear customer,
www.novatek-electro.in
www.novatek-electro.com

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Summary of Contents for Novatek UBZ-304

  • Page 1  Quality control system on the production complies with requirements ISO 9001:2008 Dear customer, Company NOVATEK-ELECTRO LTD. thanks you for purchasing our products. Dear customer, You will be able to use properly the product after carefully studying the Operating Manual.

  • Page 2: Table Of Contents

    5.3.1 UBZ operation before load relay on ........................28 5.3.2 UBZ operation after load relay enabling and motor is on..................28 5.3.3 Functional relay operation ........................... 28 5.4 Operation of UBZ-304 together with computer......................29 5.4.1 Communication protocol and interface ....................... 29 5.4.2 Communication parameters: ..........................29 5.4.3 Communication protocol .............................
  • Page 3 9 ACCEPTANCE CERTIFICATE ............................38 10 CLAIMS DATA ....................... Ошибка! Закладка не определена. Appendix А .................................... 39 CURRENT PROTECTION WITH DEPENDENT TIME DELAY Appendix В .................................... 41 UBZ OPERATION FOR MOTOR CONTROL WITH WINDING CHANGEOVER WHEN STAR-TO-DELTA STARTING UBZ-304 NOVATEK-ELECTRO...
  • Page 4 Occupational Safety when in Operation of Electrical Installations; Installation, adjustment and maintenance of the product must be performed by qualified personnel having studied this Operating Manual. In compliance with the requirements of this Operating Manual and regulations the product is safe for use. UBZ-304 NOVATEK-ELECTRO...

  • Page 5: Application

    1 APPLICATION 1.1 GENERAL UBZ-304 is designed for protection of induction motors with power of 2.5 to 315 kW in case of using the external standard current transformers with 5A output current. UBZ can be operated in networks both with insulated and dead grounded neutral.

  • Page 6: Changes In The Characteristics And Operation Of Ubz Depending On Program Version

    - parameters control and transmission by RS-232 interface. Note: Simultaneous use of RS-485 and RS-232 is not possible. For UBZ operation with PC the program of UBZ-304/305 Control Panel can be used; it is available on the website of NOVATEK-ELECTRO Company (http://www.novatek-electro.com/production_ubz.htm).

  • Page 7: Specifications

    IP64 Protection rating of housing IP10 Climatic version NC 3.1 Contamination level Overvoltage category Rated voltage of insulation Rated impulse withstand voltage Electric shock protection class Wire cross section for connection to terminals 0.5-2 Torque for terminal screws UBZ-304 NOVATEK-ELECTRO...

  • Page 8: Measured, Calculated, Special And Service Parameters

    It varies from 0 to 49, increasing by one after recording Index of the last fault in another fault in the fault logbook. When the quantity of Read-only the fault logbook faults will reach 50, the count of faults will begin again parameter from scratch. UBZ-304 NOVATEK-ELECTRO...
  • Page 9 64, 65 0 – 1 Cosine of angle between voltage and phase Cos A Cosine of angle current L1 between voltage and current *1000 0 – 1 Cosine of angle between voltage and phase Cos B current L2 UBZ-304 NOVATEK-ELECTRO...

  • Page 10: Programmable Parameters

    1 – "SIT" ; 2 – "VIT (LTI)"; 3 – " EIT"; 4 – "UIT"; 5 – "RI". Actuation setting for Repetition factor is set relative to Imax coef over-current protection, rated motor current (it is used at UBZ-304 NOVATEK-ELECTRO...
  • Page 11 Factor of time increasing Compensation of cooling time Termal if motor is stopped increasing while motor is stopped. C stop Minimum phase current Actuation setting, % Operation threshold Imin minimum operating current tresh protection, in % of installed rated one. UBZ-304 NOVATEK-ELECTRO...
  • Page 12 Phase loss, s LossT 0 – "Off" – protection is off; Permit for protection 1 – "OnnAR" – protection is on, operation Phase Loss ARS after tripping is disable; Prot 2 – "On AR" – protection is on, UBZ-304 NOVATEK-ELECTRO...
  • Page 13 0 – "Off"- it is disabled; Motor control on UBZ 1 – "Start" – motor star is enabled; front panel 2 – "Stop" – motor emergency MotorOp shutdown is enabled; 3 – "St<>" – motor start-up and shutdown is enabled. See it.5.7 UBZ-304 NOVATEK-ELECTRO...
  • Page 14 Miscellaneous 0 – "Off" – the mode is disabled; Activating the mode of 1 – "On" – the mode is enabled. minimum number of Minimal set settings The mode change is possible only in advanced user level mode UBZ-304 NOVATEK-ELECTRO...
  • Page 15 (except the access code of advanced user) The serial interface parameters (RS-485/ RS-232) UBZ communication Address address 0 – "9.6 k" – 9600 baud; Transfer rate Data speed 1 – "19.2k" – 19200 baud. UBZ-304 NOVATEK-ELECTRO...
  • Page 16 Input I log 1 – "OnWr" – motor cutoff is considered the fault and is recorded in the fault logbook. Control via analog input 0-10 V Upper threshold, V Input U UP Lower threshold, V Input U DOWN UBZ-304 NOVATEK-ELECTRO...

  • Page 17: Protection Functions

    T is the delay time of the protection operation (“Imax delay“). Example: When “Imax coef“ = 4.0, “Rated Inom” = 10, “Imax delay“ = 10.0, the motor will switch off in 10 seconds after one of the phase currents exceeds 40 Amp. UBZ-304 NOVATEK-ELECTRO...

  • Page 18: Ground Fault Protection

    – It has its own definite time delay of ARS (“AR time Imin” parameter). 3.4.6 Delayed start and rotor blocking The principle of delayed start protection and rotor inter-blocking is given in Fig.3.3. 3.4.6.1 Delayed start UBZ-304 NOVATEK-ELECTRO...

  • Page 19: Thermal Overload Protection

    ARS. Choosing different ARS time periods considering thermal hysteresis, one can reduce the number of starts per time unit because in the intermittent mode of operation UBZ remembers the amount of heat released during the motor start. UBZ-304 NOVATEK-ELECTRO...

  • Page 20: Windings Overheating Protection

    3.4.12 Network power frequency rise protection is enabled, if the network power frequency is higher than the set-point (“Frequency Max” parameter) within the time specified by “FreqMax delay” parameter. 3.4.13 Protection for minimum resistance of motor winding insulation UBZ-304 NOVATEK-ELECTRO...

  • Page 21: Protection For The Motor Phase (-S) Break (Loss)

    Rated input current of CT (Ict) is selected based on the rated current of the motor (In), the motor starting current, start duration, the time required for ARS (taking into account the characteristics of UBZ inputs designed to connect CT (Table 5.1)). Table 5.1 – Characteristics of UBZ-304 inputs designed to connect CT – Current of UBZ inputs...

  • Page 22: Unit Installation

    - put the rubber gasket on UBZ (it.3 Fig.5.1); - install UBZ into the panel hole; - install the fasteners (it.1 Fig.5.1) on the lower and upper UBZ panels; - secure UBZ in the panel with tightening screws of the fastener. UBZ-304 NOVATEK-ELECTRO...

  • Page 23: Ubz-304 Connect

    Q1, Q2 – automatic breaker; T1-T3 – Current transformer (output 5 A); T4 – Differential transformer. Figure 5.2 – UBZ-304 Connection Diagram 5.1.5 UBZ-304 connect 5.1.5.1 Connect the current transformers in accordance with Fig.5.2; 5.1.5.2 Pass through a differential current transformer (zero sequence transformer) all three phase wires and connect it to UBZ;...

  • Page 24: Ubz Control

    5.1.5.6 In case of MODBUS usage, connect the communication lines to terminals 10 (GND), 11 (line B RS-485), 12 (line A RS-485) of UBZ. Set the parameter of “Communication” = “RS485”. 5.1.5.7 Energize UBZ-304 ATTENTION – UBZ is supplied with set rated current of motor equal to zero. In this case, UBZ load relay will not be enabled until the rated current of the motor.

  • Page 25: Mode Of 'Keyboard Blocking

    When UBZ unit is in the user-level mode, led MMSP is off. To view and change the parameters of user level you should press the SETUP button, the led SETUP is on and the indicator displays the user menu (Fig.5.6). UBZ-304 NOVATEK-ELECTRO...

  • Page 26: Mode Of "Advanced User Level

    RES/MEM/SEL. If the password is wrong, then UBZ will return to the view state of the parameters, otherwise UBS will go to the advanced user level (Fig.5.9). Figure 5.9 – Advanced user level UBZ-304 NOVATEK-ELECTRO...

  • Page 27: Factory Settings

    – faults are reset regardless of whether ARS is disabled or enabled (besides the current faults and faults by the presence of motor currents when load relay is off); – counting of ARS is off; – in the absence of the current troubles the motor is off. 5.2.10 Energy meters reset UBZ-304 NOVATEK-ELECTRO...

  • Page 28: Ubz Operation

    The group of parameters selected by the user can be displayed constantly (“Indicat mode” =” Conti”) or for 15 s, and then indication of motor currents returns (“Indicat mode “ = ”>15s”). 5.3.3 Functional relay operation The functions performed by the functional relay are determined by the parameter “Relay F mode”. UBZ-304 NOVATEK-ELECTRO...

  • Page 29: Operation Of Ubz-304 Together With Computer

    Note – When the functional relay is enabled, the contacts 13-14 are open, and contacts 14-15 closed. 5.4 OPERATION OF UBZ-304 TOGETHER WITH COMPUTER 5.4.1 Communication protocol and interface The communication between UBZ and computer can be via RS-232 or RS-485 interface (parameter "Communication").

  • Page 30: Communication Protocol

    ~ 30 ~ ATTENTION! CHANGES OF THE COMMUNICATION SETTINGS (EXCEPT THE UNIT ADDRESS) WILL BE EFFECTIVE ONLY AFTER DE-ENERGIZATION OF UBZ-304 OR AFTER FULFILLMENT OF THE COMMAND "UBZ RESTART" ("RESTART") (it.5.4.11). 5.4.3 Communication protocol Exchange between PC and UBZ is carried by data packets. Data packet format in RTU mode is shown in Table 5.3 and in ASCII mode –...
  • Page 31 Sub-function 00h - return of request data The data transmitted in the data field of the request should be returned in the response data field. Example of request and response for MODBUS RTU mode is shown in Fig.5.13. UBZ-304 NOVATEK-ELECTRO...

  • Page 32: Control Of Correct Transmission Of Data Packet

    To check the correctness of data transfer in ASCII mode LRC Redundant Check – longitudinal redundancy check. CRC is 8 – bit number transmitted as two ASCII characters. The CRC is formed by inverse transformation of all ASCII characters in eight-bit binary numbers, the addition of these numbers without accounting for the transfer, UBZ-304 NOVATEK-ELECTRO...

  • Page 33: Register Addresses

    The parameters are transmitted in binary decimal code. For example, the code 0x14 in the register of minutes means 14 minutes. Registers of time settings allow reading and recording of data. Register addresses for time settings are shown in Table 5.10. Table 5.10 Parameter Address Remark Seconds Minutes UBZ-304 NOVATEK-ELECTRO...

  • Page 34: Communication Errors Handling

    In case of emergency shutdown of the motor by simultaneously pressing DOWN, UP (when "MotorOp UBZ" = 2 ("Stop") or "MotorOp UBZ" = 3 ("St<>"), 0 will be reset in the command register. Table 5.12 – Values of command register UBZ-304 NOVATEK-ELECTRO...

  • Page 35: Command "Fault Reset

    RS-232/RS-485 interface. After receiving Command "UBZ RESTART", UBZ does not return confirmation of received command. WARNING: Between the last address to the registers of UBZ-304 and recording of the command "UBZ RESTART" the delay of at least 100 ms should be provided.

  • Page 36: Emergency Conditions Logbook

    2 – Occurrence of fault as "Error CALIB" – UBZ improper calibration means that the calibration coefficients of the measured data are damaged. The continued operation of UBZ is impossible. Re-calibration of the device is required to be done at the manufacturer factory. 5.6 EMERGENCY CONDITIONS LOGBOOK UBZ-304 NOVATEK-ELECTRO...

  • Page 37: Motor Control On Ubz Front Panel

    6.2 MAINTENANCE PROCEDURE: 1) check the wires connection reliability, if necessary – clamp with force as specified in Table 3.1; 2) check visually the housing integrity; 3) if necessary, wipe with cloth the front panel and the unit housing. UBZ-304 NOVATEK-ELECTRO...

  • Page 38: Transportation And Storage

    7 TRANSPORTATION AND STORAGE UBZ-304 in the original package of the Manufacturer should be stored indoors with temperature from minus 45 to +60°C and relative humidity of not more than 80% in the absence of vapors harmfully acting on the packaging and materials of the device.

  • Page 39: Claims Data

    ~ 39 ~ Appendix А CURRENT PROTECTION WITH DEPENDENT TIME DELAY (mandatory) UBZ-304 NOVATEK-ELECTRO...
  • Page 40 ~ 40 ~ UBZ-304 NOVATEK-ELECTRO...
  • Page 41 Appendix В UBZ OPERATION FOR MOTOR CONTROL WITH WINDING CHANGEOVER WHEN STAR-TO-DELTA STARTING (mandatory) For operation of UBZ-304 for motor with windings changeover when star-to-delta starting to connect the unit according to figure B.1. К1 – Starter of motor enabling К2 -...

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