Novatek UBZ-305M Operating Manual

Universal motor protection unit

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NOVATEK-ELECTRO LTD

Intelligent Industrial Electronics

UNIVERSAL MOTOR PROTECTION

Quality control system on the development and Unition complies with requirements

Company NOVATEK-ELECTRO LTD thanks you for purchasing our Units.

You will be able to use properly the Unit after carefully studying the Operating Manual.

Keep the Operating Manual throughout the service life of the Unit.

Ukraine, Odessa

UNIT

UBZ-305M

OPERATING MANUAL

ISO 9001:2015

Dear customer,

www.novatek-electro.com

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Page 1 Quality control system on the development and Unition complies with requirements ISO 9001:2015 Dear customer, Company NOVATEK-ELECTRO LTD thanks you for purchasing our Units. You will be able to use properly the Unit after carefully studying the Operating Manual. Keep the Operating Manual throughout the service life of the Unit.
Page 2 ~ 2 ~ UBZ-305M NOVATEK-ELECTRO...
Page 3: Table Of Contents
~ 3 ~ CONTENT 1 APPLICATION 1.1 General 1.2 Operating conditions 1.3 Changes in the characteristics and operation of UBZ-305M depending on program version 1.4 Controls and overall dimensions 1.4.1 Design 1.4.2 Indication and Controls 2 COMPONENTS 3 SPECIFICATIONS 3.1 Basic technical specifications 3.2 Measured, calculated, special and service parameters...
Page 4 7 TRANSPORTATION AND STORAGE 8 SERVICE LIFE, SHELF LIFE AND MANUFACTURER WARRANTY 9 ACCEPTANCE CERTIFICATE 10 CLAIMS DATA Appendix А – Current protection with dependent time delay Appendix В – UBZ-305M operation for motor control with winding changeover when star-to-delta starting. UBZ-305M NOVATEK-ELECTRO...
Page 5 Occupational Safety when in Operation of Electrical Installations. Installation, adjustment and maintenance of the Unit must be performed by qualified personnel having studied this Operating Manual. In compliance with the requirements of this Operating Manual and regulations the Unit is safe for use. NOVATEK-ELECTRO UBZ-305M...
Page 6: Application
UBZ-305M is a functional analogue of UBZ-305. But as to connection with PC, UBZ-305M uses USB interface instead of RS-232. UBZ-305M 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.
Page 7: Operating Conditions
The flexible interface configuration permits you to adapt to the requirements of any user. Note: Programs developed by the user may be used to work with UBZ-305M. It should be noted that a virtual COM-port is applied for controlling and transmitting parameters via the USB interface on the PC side.
Page 8: Indication And Controls
4 – Green LED "TR" is on when UBZ-305M functional relay operates in time-delay relay mode; 5 – Red LED "FAULT": - when load relay is off: it is on when UBZ-305M is in fault conditions (it flashes if after fault ARS is expected);...
Page 9: Components
Wire cross section for connection to terminals, mm 0.5-2 Torque for terminal screws, N*m *Note: It is allowed UBZ-305M operation at temperatures from minus 35 to minus 20°С; in this case the readings on display can be not available. Table 3.2 – Technical Specifications...
Page 10: Measured, Calculated, Special And Service Parameters
Measured and calculated parameters the values of which are displayed on LCD display, limits of their measurements and accuracy are given in Table 3.5. Parameter values can be transferred to PC connected to one of the UBZ-305M interfaces (MODBUS, USB). Parameter addresses are indicated in Table 3.5.
Page 11 Voltage Effective values of phase voltages (determined Phase U1 100 – when connecting the neutral conductor to Phase U2 Volt UBZ-305M), V Phase U3 Line U1 100 – Effective values of line voltages, V Line U2 Line U3 100 –...
Page 12: Programmable Parameters
Rated output current of CT out i used CT, A Rated current of CT, A CT nom i Basic parameters 0 – current is not set: UBZ-305M Rated current of motor, Rated will not enable the load relay Inоm (it.5.2.7)
Page 13 0 – "Off" – protection is off; 1 – "OnnAR" – protection is on, Permit for protection Umin operation for minimum ARS after tripping is disable; protec 2 – "On AR" – protection is on, line voltage ARS is enabled NOVATEK-ELECTRO UBZ-305M...
Page 14 ARS time after AR time protection operation at Imin minimum current, s ARS time, s AR time 0 – "Off" – ARS is disabled; Disabled ARS for all 1 – "On" – ARS is enabled. faults (except voltage UBZ-305M NOVATEK-ELECTRO...
Page 15 "Umin protec", "Umax protec", "Uimbal protec" 0 – "StOff" – motor starting manually on UBZ-305M front Permit for motor Start> panel; operation after 1 – "St>AR" – motor starting Power UBZ-305M energizing after ARS time;...
Page 16 0 – "LineU" – line voltage: "Line Indications on U1", "Line U2", "Line U3"; 1 – "InsFr" – motor running time UBZ-305M display Indicat before starting the <Start ("Time motor"), motor insulation motor resistance ("Insulation"), mains frequency ("Frequency")
Page 17 Detection of response Overex- 0 – It is disabled overtime, s ceeding 0 – "Off " – communication is disabled; Permit of UBZ-305M 1 – "USB" – communication via Communi communication via -ation USB; serial link 2 – "RS485" – communication via RS-485 0 –...
Page 18: Protection Functions
1 – Indicator light turns off if the line supply voltage is lower than 250 V. 2 – Parameter change will happen after turning off and repeated energizing or fulfillment of "UBZ RESTART" command 3.4 Protection Functions 3.4.1 Protection Types UBZ-305M performs the following protection types for electric motors: – over-current protection in phases; –...
Page 19: Maximum Phase Current Protection
ARS after tripping will not occur (regardless of the value of “I2 rev protec” parameter). The coefficient of negative voltage (current) sequence is characteristic of unbalance of three-phase voltage (current). Approximately the coefficient of negative voltage sequence is determined by the formula: 2(1)  1(1) Where: NOVATEK-ELECTRO UBZ-305M...
Page 20: Minimum Phase Current Protection
(“Start I Coef” parameter) during the period of time more than the ST time delay (“Start delay I” parameter). Rotor blocking After motor start performing (reducing the starting current lower than 1.2 of rated one) UBZ-305M switches to control of possible blocking of the rotor. The protection system operates when all the phase currents are more than set-points during a period of time greater than LT time delay (“Block I delay”...
Page 21: Windings Overheating 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-305M remembers the amount of heat released during the motor start. I/Iн – current ratio relative to rated one;...
Page 22: Voltage Protection
The level of stator winding insulation relative to housing is also checked, when the load relay is on, but the motor currents are less than 10% of rated current (in this case UBZ-305M considers that the motor is off).
Page 23: Selection Of Current Transformers
MS. If the motor housing is not grounded, or network with isolated neutral is used, or neutral wire is not connected to UBZ-305M terminal, it is necessary to connect electrically the motor housing to the terminal 26 of UBZ-305M.
Page 24 ATTENTION – UBZ-305M is supplied with set rated current of motor equal to zero. In this case, UBZ-305M load relay will not be enabled until the rated current of the motor. Motor rated current should be at least 3 A.
Page 25: Ubz-305M Control
The enabling sequence for the load relay after energizing is determined by the values of the parameters “AR time” and “Start>Power” (it.5.3.1.1). 5.1.4.7 In the course of first starting in accordance with factory settings UBZ-305M is in the mode of MNS in which it is possible to set the following parameters: CT rated current (parameter of “CT nom i“);...
Page 26: Mode Of Keyboard Blocking
When the mode of MNS is disabled (setting of parameter "Minimal set" is in "Off" position), the led “MMSP” goes out and UBZ-305M switches to the user level. At the user level you can change all the settings (included and not included in the list of MNS), if the change is not disabled by the advanced user.
Page 27: Mode Of Advanced User Level
"WR/SEL". If the password is wrong, then LCD will display "ERROR" and after 15 seconds UBZ-305M will return to the view state of the parameters, otherwise UBS will go to the advanced user level (Fig.5.8).
Page 28: Factory Settings
("Time motor"). – clock correction ("Correct Time"). After you complete the installation of factory parameters, UBZ-305M will start operation in the mode of MNS, the list of which the settings are included: – CT output current, “CT out i”;...
Page 29: Energy Meters Reset
"MotorOp UBZ-305M") the automatic enabling the motor is impossible up to UBZ-305M turning off. The action of the parameter “AR” value is applied to all types of faults except voltage faults. To disable ARS in case of voltage faults you should use the parameters “Umax protec”, “Umin protec”, “Uimbal protec”.
Page 30: Functional Relay Operation
COMMAND "UBZ RESTART" ("RESTART") (it.5.4.11). 5.4.3 Communication protocol Exchange between PC and UBZ-305M is carried by data packets. Data packet format in RTU mode is shown in Table 5.3 and in ASCII mode – In Table 5.4. Table 5.3 – Data packet in RTU mode...
Page 31: Command Codes
For example, reading of continuous 2 words from starting address 2102H in UBZ-305M with communication address 01H in RTU mode (Table 5.5) and in ASCII mode (Table 5.6) Note – In UBZ-305M during fulfillment of one command 12 registers (n=12) are possible to be read. Table 5.5...
Page 32 Command code – 0x06, record – one word This command is not recommended, as the entry of incorrect data may lead to failure of UBZ-305M. Data recording is possible at the addresses of programmable parameters (Table 3.6), except the parameters listed in Table 5.7.
Page 33: Control Of Correct Transmission Of Data Packet
2102H in UBZ-305M with communication address 01H is shown in Table 5.6. 5.4.6 Register addresses The register addresses of measured and calculated parameters of UBZ-305M are given in Table 3.5 The register addresses of programmable parameters are given in Table 3.6.
Page 34: Time Parameter Registers
Low byte – month, high byte – (year minus 1000+(N-1)*5+4 2000) Note – At the time of UBZ-305M delivery or after the setting of factory parameters (it.5.2.7) there is a record in the fault logbook about error code 40 and parameter value 10000 5.4.7 Time parameter registers The parameters are transmitted in binary decimal code.
Page 35: Communication Errors Handling
(normal device operation), but it is enabled to record to the command register R_COMMAND. Automatic motor start is possible only after ARS time. When “MotorOp RS-2/5” equal to "OffSta” – UBZ-305M will start the motor only after the receipt of the respective command via USB/RS-485 interface.
Page 36: Command For Ubz-305M Faults Reset
(when “Relay F Mode” = “Alarm”). Fig.5.14 – UBZ-305M Indicator in mode of view for measured and calculated parameters (if there is a fault) If UBZ-305M defines several different types of faults at the same time, the codes of faults and parameter values are displayed sequentially, one by one (on the indicator the number of displayed fault is changed).
Page 37 Breakout of temperature transmitter BreakTempS2 902:8 Loss of phase Break Phase 902:9 Error EEPROM destruction 902:10 EEPROM At analog input "0-20 mA" Input I 902:11 At analog input "0-10 V" Input U 902:12 Improper calibration Error CALIB 902:13 NOVATEK-ELECTRO UBZ-305M...
Page 38: Emergency Conditions Logbook
– indicator "FAULT" is off; – the fault code is displayed on LCD. Note – In this state of UBZ-305M it is possible to do early motor enabling by buttons on the front panel or by remote control. UBZ-305M NOVATEK-ELECTRO...
Page 39: Maintenance
7 TRANSPORTATION AND STORAGE UBZ-305M 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 40 The Company is grateful to you for the information about the quality of the device and suggestions for its operation.  For all questions, please contact the Manufacturer: “NOVATEK-ELECTRO”, LTD Admiral Lazarev Str., 59, 65007, Odessa, Ukraine; tel. (+38 048) 738-00-28, tel/fax (+38 0482) 34-36-73 www.novatek-electro.com...
Page 41: Appendix А - Current Protection With Dependent Time Delay
~ 41 ~ Appendix А CURRENT PROTECTION WITH DEPENDENT TIME DELAY (mandatory) NOVATEK-ELECTRO UBZ-305M...
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Page 43: Appendix В - Ubz-305M Operation For Motor Control With Winding Changeover When Star-To-Delta Starting
It is strictly forbidden to shutdown the motor by external machine (the starter) without UBZ-305M de- energizing. As an exception, it is allowed after the motor is switched off by external machine (the starter), additionally to turn off the motor on UBZ-305M front panel or via USB/RS-485 interface to avoid the direct delta starting IT IS STRICTLY FORBIDDEN TO SHUTDOWN THE MOTOR BY EXTERNAL MACHINE (THE STARTER) WITHOUT UBZ-305M DE-ENERGIZING.
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