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Siemens SMART 7KT0311 Manual

Multifunction meter
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SMART 7KT0311 Manual
MANUAL
SMART 7KT
Multifunction meter
7KT0311 (LCD Class 0.5s)
SMART 7KT power monitoring devices
1

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Summary of Contents for Siemens SMART 7KT0311

  • Page 1 SMART 7KT0311 Manual MANUAL SMART 7KT Multifunction meter 7KT0311 (LCD Class 0.5s) SMART 7KT power monitoring devices...
  • Page 2 SMART 7KT0311 Manual Index SMART 7KT Introduction Multifunction meter Safety precautions 7KT0311 (LCD Class 0.5s) Technical specification Installation Connection Configuration Manual Communication Maintenance 09/2022 SME7KT031100...

  • Page 3: Purpose Of This Document

    SMART 7KT0311 Manual Introduction 1.1 Purpose of this document This present manual describes the SMART 7KT multifunction meter. It is intended for the use of: • Planners • Plant operators • Commissioning engineers • Service and maintenance personnel 1.2 Required basic knowledge A general knowledge of the field of electrical engineering is required to understand this manual. Knowledge of the relevant safety regulations and standards is required for installing and connecting the device. 1.3 Components of the product...

  • Page 4: Safety Precautions

    SMART 7KT0311 Manual Safety precautions DANGER Hazardous voltage will cause death or serious injury. Turn off and lock out all power supply before working on this device. NOTICE Installation and maintenance must be carried out by qualified personnel. This product has been designed for environment A. Use of this product in environment B may cause unwanted electromagnetic disturbances in which case the user may require to take adequate mitigation measures. Risk of damage: Please ensure the proper isolation of meter during the IR (Meggering) test. All safety related codifications, symbols and instructions that appear in this operating manual or on the equipment must be strictly followed to ensure the safety of the operating personnel as well as the instrument. If the equipment is not used in a manner specified by the manufacturer it might impair the protection provided by the equipment.

  • Page 5: Technical Specification

    SMART 7KT0311 Manual Technical specification 7KT0311 (LCD Class 0.5s) Power Monitoring Device panel instrument for standard electrical values; Protocol: Modbus RTU; LCD display Vaux: 95V to 240V AC x/1 or 5 A; Class 0.5s Measurements measuring procedure • for voltage measurement True RMS • for current measurement True RMS type of measured value detection complete voltage curve sinusoidal or distorted measurable line frequency • initial value 45 Hz • full-scale value 65 Hz operating mode for measured value detection automatic line frequency detection Supply voltage design of the power supply SMPS power supply type of voltage of the supply voltage...
  • Page 6 SMART 7KT0311 Manual 7KT0311 (LCD Class 0.5s) Inputs Outputs number of digital inputs type of electrical connection at the digital inputs screw-type terminals operating conditions for digital inputs external voltage supply input voltage at digital input at DC maximum 30 V input current at digital input initial value for signal<1>- recognition 10 mA number of digital outputs type of switching output Unidirectional digital output version switching or pulse output function operating voltage as output voltage at DC maximum permissible 30 V type of electrical connection at the digital outputs screw-type terminals output current at the digital outputs at DC limited to 100 ms maximum 130 mA internal resistance at the digital outputs 55 Ω standard for pulse emitter according to IEC62053-31 pulse duration • initial value 100 ms • full-scale value...
  • Page 7 SMART 7KT0311 Manual Measured variables Measured variable On display On communication Voltage V Current Neutral Current Frequency Power Factor Active Power Reactive Power Apparent Power Active Energy (Import, Export, Total) Reactive Energy (Import, Export, Total) Apparent Energy Max Demand (Current) over set demand period Max Demand (Active, Reactive, Apparent Power) over set demand period Min Demand (Active, Reactive Power) Phase Angle of 3 phases THD% voltage THD% current Individual harmonics (current) Individual harmonics (voltage) Total Active Energy (DI) Total Reactive Energy (DI) Total Apparent Energy (DI) Old Active Energy Old Reactive Energy Old Apparent Energy On Hours Phase sequence indication...

  • Page 8: Installation

    SMART 7KT0311 Manual Assembly Installation For installing the meter Prepare the panel cutout with proper dimensions as shown below. OUTLINE PANEL CUTOUT FRONT PANEL DESCRIPTION Dimensions (in mm) Dimensions (in mm)

  • Page 9: Wiring Guidelines

    SMART 7KT0311 Manual Installation Guidelines 1. This equipment, being built-in-type, normally becomes a part of main control panel and in such case the terminals do not remain accessible to the end user after installation and internal wiring. 2. Conductors must not come in contact with the internal circuitry of the equipment or else it may lead to a safety hazard that may in turn endanger life or cause electrical shock to the operator. 3. Circuit breaker or mains switch must be installed between power source and supply terminals to facilitate power ‘ON’ or ‘OFF’ function. However this switch or breaker must be installed in a convenient position normally accessible to the operator. 4. Before disconnecting the secondary of the external current transformer from the equipment, make sure that the current transformer is short circuited to avoid risk of electrical shock and injury. 5. The equipment shall not be installed in environmental conditions other than those mentioned in this manual. 6. The equipment does not have a built-in-type fuse. Installation of external fuse of 0.5 A, Class gG type for electrical circuitry is highly recommended. 7. Remove the scratch-guard from the meter display during commissioning of the panel. Wiring Guidelines 1. To prevent the risk of electric shock, power supply to the equipment must be kept OFF while doing the wiring arrangement. 2. Wiring shall be done strictly according to the terminal layout. Confirm that all connections are correct. 3. Use lugged terminals. 4. To reduce electromagnetic interference use of wires with adequate ratings and twists of the same in equal size shall be made with shortest connections.
  • Page 10 SMART 7KT0311 Manual For demounting the meter...

  • Page 11: Circuit Diagram

    SMART 7KT0311 Manual Connection RS485 24V DC CONNECTIONS DIAGRAM Circuit Diagram 3 Phase 4-Wire 2 Phase 3-Wire 3 Ø - 4 Wire, 3 CT’S and 3 PT’S 2 Ø - 3 Wire, 2 CT’S and 2 PT’S...
  • Page 12 SMART 7KT0311 Manual Circuit Diagram 3 Phase 4-Wire (Commonly used) 3 Phase 3-Wire 3 Ø - 4 Wire, 3 CT’s 3 Ø - 3 Wire, 2 CT and 2 PT’s 1 Phase 2-Wire 1 Ø - 2 Wire, 1 CT...
  • Page 13 SMART 7KT0311 Manual Configuration There are 4 dedicated soft-touch labelled as F1, F2, F3, F4. Use these 4 keys to read meter parameters. The keys have multiple assignments. Function assignments and key labeling change according to the context of operator input. A short touch on the key triggers the function once. A longer touch on the function keys switches on the auto repeat function after approximately 1 s. Auto repeat is useful, for example, for fast incrementing of values when parameterizing the device. For reading serial number Touch & hold F3 key for 10 sec. to display 8-digit serial number only for 5 sec. at 5th line of display Automatic / manual mode Use F3 and F4 key together to enter in configuration mode. Then change the page mode as automatic or manual as per requirement. Note: By default, unit operates in automatic mode. In automatic mode online pages scroll automatically at the rate of 5 seconds per page. In automatic mode when any key is touched, unit temporarily switches to manual mode and the appropriate page is displayed. If any key is not touched for 5 sec, unit resumes automatic mode. Password to start configuration When the meter is brought into the configuration mode by using keys F3+F4, the first page that is displayed is the password page which shows the password 0000. Enter the password 1000 which is the default factory-set password by using the F1 key to move cursor left or right by one digit at a time and F2 or F3 keys for increasing or decreasing parameter values. After you enter the password of 1000, press F4 key to go to the next page which is the password change page and continue with parameterization. For the configuration setting mode...
  • Page 14 SMART 7KT0311 Manual Parameterization with function keys Config. Factory Config. Factory Function Range or Selection Function Range or Selection page Setting page Setting Password 0000 to 9998 1000 17.14 Page Sequence 14 1 to 23 Change Password No / Yes 17.15 Page Sequence 15 1 to 23...
  • Page 15 SMART 7KT0311 Manual Reading of parameters Manual Mode - DG Network Online Pages (Manual Mode) Selection Keys Screen Function 1st Screen L-N voltages of 3 phases and average L-N voltages 2nd Screen L-L voltages of 3 phases and average L-L voltages 3rd Screen % THD of L-N voltages of 3 phases and average L-N voltages 4th Screen % THD L-L voltages of 3 phases and average L-L voltages 5th Screen Phase Current of 3 phase and neutral current 6th Screen MAX DMD Current of 3 Phases and average Phase current 7th Screen % THD of 3 phase current and average Phase current 8th Screen % unbalance voltage & Current...
  • Page 16 SMART 7KT0311 Manual Reading of parameters (Continued) Network Online Pages Selection Keys Screen Function 1st Screen Average L-L voltages of 3 phases 2nd Screen % THD of L-L voltages of 3 phases and Average line to line voltage 3rd Screen Line to Line Current of all 3 phases and Average current 4th Screen MAX Current of 3 Phases 5th Screen % THD of 3 phase current 6th Screen % unbalance voltage & Current 1st Screen Voltage, Current, Power factor, Frequency of 1-2 Phase 2nd Screen Voltage, Current, Power factor, Frequency of 2-3 phase 3rd Screen...
  • Page 17 SMART 7KT0311 Manual Reading of parameters (Continued) Network Online Pages Selection Keys Screen Function 1st Screen Voltage of 2nd phase 2nd Screen % THD voltage of 2nd phase 3rd Screen Current of 2nd phase 4th Screen MAX DMD current of 2nd phase 5th Screen % THD of 2nd phase 1st Screen Voltage, Current, Power factor, Frequency of 2nd phase...
  • Page 18 SMART 7KT0311 Manual Reading of parameters (Continued) Auto Mode - DG Network Selection Screen Function 1st Screen L-N voltages of 3 phases and average L-N voltages 2nd Screen L-L voltages of 3 phases and average L-L voltages 3rd Screen % THD of L-N voltages of 3 phases and average L-N voltages 4th Screen % THD L-L voltages of 3 phases and average L-L voltages 5th Screen Phase Current of 3 phase and neutral current 6th Screen MAX DMD Current of 3 Phases and average Phase current 7th Screen % THD of 3 phase current and average Phase current 8th Screen % unbalance voltage & Current 9th Screen...
  • Page 19 SMART 7KT0311 Manual Reading of parameters (Continued) Network Selection Screen Function 1st Screen Voltage of 1st phase 2nd Screen % THD voltage of 1st phase 3rd Screen Current of 1st phase 4th Screen MAX DMD current of 1st phase 5th Screen % THD current of 1nd phase 6th Screen Voltage, Current, Power factor, Frequency of 1st phase 1P2W-P1 7th Screen...
  • Page 20 SMART 7KT0311 Manual Reading of parameters (Continued) Network Selection Screen Function 1st Screen Voltage of 3rd phase 2nd Screen % THD voltage of 3rd phase 3rd Screen Current of 3rd phase 4th Screen MAX current of 3rd phase 5th Screen % THD current of 3rd phase 1st Screen Voltage, Current, Power factor, Frequency of 3rd phase 1st Screen PF of 3rd phase 1P2W-P3...
  • Page 21 SMART 7KT0311 Manual Reading of parameters (Continued) Network Online Pages (Manual Mode) Selection Keys Screen Function 1st Screen Import active energy of 1st phase 2nd Screen Import active energy of 2nd phase 3rd Screen Import active energy of 3rd phase 4th Screen Export active energy of 1st phase 5th Screen Export active energy of 2nd phase 6th Screen Export active energy of 3rd phase 7th Screen Total import active energy of 3 phase 8th Screen Total export active energy of 3 phase...
  • Page 22 SMART 7KT0311 Manual Reading of parameters (Continued) Network Online Pages Selection Keys Screen Function 1st Screen Average L-L voltages of 3 phases 2nd Screen % THD of L-L voltages of 3 phases and Average line to line voltage 3rd Screen Line to Line Current of all 3 phases and Average current 4th Screen MAX Current of 3 Phases 5th Screen % THD of 3 phase current 6th Screen % unbalance voltage & Current 1st Screen Voltage, Current, Power factor, Frequency of 1-2 Phase 2nd Screen Voltage, Current, Power factor, Frequency of 2-3 phase 3rd Screen...
  • Page 23 SMART 7KT0311 Manual Reading of parameters (Continued) Network Online Pages Selection Keys Screen Function 1st Screen Voltage of 1st phase 2nd Screen % THD voltage of 1st phase 3rd Screen Current of 1st phase 4th Screen MAX DMD current of 1st phase 5th Screen % THD current of 1nd phase 1st Screen Voltage, Current, Power factor, Frequency of 1st phase...
  • Page 24 SMART 7KT0311 Manual Reading of parameters (Continued) Network Online Pages Selection Keys Screen Function 1st Screen Voltage of 2nd phase 2nd Screen % THD voltage of 2nd phase 3rd Screen Current of 2nd phase 4th Screen MAX DMD current of 2nd phase 5th Screen % THD of 2nd phase 1st Screen Voltage, Current, Power factor, Frequency of 2nd phase...
  • Page 25 SMART 7KT0311 Manual Reading of parameters (Continued) Network Online Pages Selection Keys Screen Function 1st Screen Voltage of 3rd phase 2nd Screen % THD voltage of 3rd phase 3rd Screen Current of 3rd phase 4th Screen MAX current of 3rd phase 5th Screen % THD current of 3rd phase 1st Screen Voltage, Current, Power factor, Frequency of 3rd phase 1st Screen...
  • Page 26 SMART 7KT0311 Manual Reading of parameters (Continued) Auto Mode without DG Network Selection Screen Function 1st Screen L-N voltages of 3 phases and average L-N voltages 2nd Screen L-L voltages of 3 phases and average L-L voltages 3rd Screen % THD of L-N voltages of 3 phases and average L-N voltages 4th Screen % THD L-L voltages of 3 phases and average L-L voltages 5th Screen Phase Current of 3 phase and neutral current 6th Screen MAX DMD Current of 3 Phases and average Phase current 7th Screen % THD of 3 phase current and average Phase current 8th Screen % unbalance voltage & Current 9th Screen...
  • Page 27 SMART 7KT0311 Manual Reading of parameters (Continued) Network Selection Screen Function 1st Screen Voltage of 1st phase 2nd Screen % THD voltage of 1st phase 3rd Screen Current of 1st phase 4th Screen MAX DMD current of 1st phase 5th Screen % THD current of 1nd phase 6th Screen Voltage, Current, Power factor, Frequency of 1st phase 1P2W-P1 7th Screen...
  • Page 28 SMART 7KT0311 Manual Reading of parameters (Continued) Network Selection Screen Function 1st Screen Voltage of 3rd phase 2nd Screen % THD voltage of 3rd phase 3rd Screen Current of 3rd phase 4th Screen MAX current of 3rd phase 5th Screen % THD current of 3rd phase 6th Screen Voltage, Current, Power factor, Frequency of 3rd phase 1P2W-P3 7th Screen PF of 3rd phase...

  • Page 29: Communication Parameters

    SMART 7KT0311 Manual Communication Protocol and interface Connection diagram for communication Protocol: Modbus RTU Interface: Integrated RS485 interface Communication parameters Communication address 1 to 255 Master Transmission mode Half duplex Data types Float and Integer Transmission distance 500m maximum RS485-RS232 Transmission Speed 300, 600, 1200, 2400, 4800, Suggested Converter 9600, 19200 (in bps) terminating resistor (120 ohm, ¼ watt)
  • Page 30 SMART 7KT0311 Manual Modbus register addresses list (Continued) Address Hex Address Parameter Address Hex Address Parameter 30072 0x48 kVA MAX Apparent Power 30738 0x2E2 DI Total Net Kwh 30084 0x54 kWh1 (Imp) 30740 0x2E4 DI Total Net KVArh 30086 0x56 kWh2 (Imp) 30742 0x2E6 DI Total Net KVAh 30088 0x58 kWh3 (Imp) 30143 0x08F 2nd Harmonic of V1N...
  • Page 31 SMART 7KT0311 Manual Modbus register addresses list (Continued) Address Hex Address Parameter Address Hex Address Parameter 30235 0x0EB 18th Harmonic of V2N 30335 0x14F 7th Harmonic of V12 30237 0x0ED 19th Harmonic of V2N 30337 0x151 8th Harmonic of V12 30239 0x0EF 20th Harmonic of V2N 30339 0x153 9th Harmonic of V12 30241 0x0F1 21st Harmonic of V2N 30341 0x155 10th Harmonic of V12...
  • Page 32 SMART 7KT0311 Manual Modbus register addresses list (Continued) Address Hex Address Parameter Address Hex Address Parameter 30433 0x1B1 26th Harmonic of V23 30591 0x24F 16th Harmonic of I2 30435 0x1B3 27th Harmonic of V23 30593 0x251 17th Harmonic of I2 30437 0x1B5 28th Harmonic of V23 30595 0x253 18th Harmonic of I2...
  • Page 33 SMART 7KT0311 Manual Modbus register addresses list (Continued) Readable / writable parameters: [Data Structure: Integer] Length Address Parameter Range Address (Register) 40000 0x00 Password Min Value: 0 Max Value: 9998 40001 0x01 Network Selection Value: 0 Meaning: 3P4W Value: 1 Meaning: 3P3W Value: 2 Meaning: 1P2W-P1 Value: 3 Meaning: 1P2W-P2 Value: 4 Meaning: 1P2W-P3 40002...
  • Page 34 SMART 7KT0311 Manual Modbus register addresses list (Continued) Length Address Parameter Range Address (Register) 40033 0x21 Page sequence 17 1 to 23 1: First Page: 23: Last page 40054 0x36 Page sequence 18 1 to 23 1: First Page: 23: Last page 40055 0x37 Page sequence 19 1 to 23 1: First Page: 23: Last page 40059 0x3B Page sequence 20 1 to 23...

  • Page 35: Maintenance

    Maintenance Guidelines • The equipment should be cleaned regularly to avoid blockage of ventilating parts. • Clean the equipment with a clean dry or damp cloth. Do not use any cleaning agent other than water. Disposal and recycling Dispose of or recycle the module in accordance with the applicable laws and regulations in your country.
  • Page 36 Trademarks - Unless otherwise noted, all names identified by ® are information be desired, please contact the local Siemens sales office. The registered trademarks of Siemens AG or Siemens Industry, Inc. The contents of this instruction manual shall not become part of or modify remaining trademarks in this publication may be trademarks whose use any prior or existing agreement, commitment, or relationship. The by third parties for their own purposes could violate the rights of the sales contract contains the entire obligation of Siemens. The warranty owner. contained in the contract between the parties is the sole warranty of Customer Care Toll free no. 1800 209 0987 Email: ics.india@siemens.com SACHIN ENTERPRISE Siemens Ltd. Product development is a continuous process. Consequently the data indicated in this Operating Instructions is subject to change without prior notice. For latest issue contact our sales offices.

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