Mikro X10 User Manual
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Mikro X10 User Manual

Earth leakage relay
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X10
EARTH LEAKAGE
RELAY
USER MANUAL

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  • Page 1 EARTH LEAKAGE RELAY USER MANUAL...
  • Page 3 Disclaimer Mikro shall not be liable for errors contained herein including any incidental and/ or consequential damages arising from the use of this material. Mikro also re- serves the right to vary the product from that described in this material without prior notice.

  • Page 4: Table Of Contents

    CONTENTS Preface ....................Contents ....................Introduction .................... 1.1 Introduction ..................1.2 Symbols and Definitions ..............1.3 Case Dimension ................Installation Guide ................... 2.1 Mounting ..................2.2 Rear Terminal Description ..............2.3 Wiring ....................2.3.1 Overall Wiring Connection ............ 2.3.2 ZCT Connection ..............Front Panel ....................
  • Page 5 4.4 Menu Test ..................4.4.1 Leakage Test ................. Password ....................Alarm ....................... Technical Data ..................8. MODBUS ....................8.1 MODBUS Protocol ................8.2 MODBUS Message Format ............. 8.3 MODBUS Functions ................ 8.3.1 Function 03h or 04h - Reading Input/Holding Register(s) ..8.3.2 Function 06h - Write Single Register ........

  • Page 6: Introduction

    For correct application, the device must operate together with Mikro’s series of zero phase current transformers. The device has one programmable trip contact (RL1) dedicated for trip function, one programmable contact (RL2) and one IRF contact (RL3).

  • Page 7: Symbols And Definitions

    1.2 Symbols and Definitions In this manual and on the device, unless otherwise specified, the following sym- bols and abbreviations shall apply:- : Alternating current : Acknowledge : Analog converter Addr : Address Alrm : Alarm : Change : Check : Clear : Command Comm...

  • Page 8: Case Dimension

    1.3 Case dimension The device is designed for front panel flush mounting and has a standard 96mm x 96mm outer dimension. Front View 96mm Side View 20mm 105mm...

  • Page 9: Installation Guide

    2. Installation Guide 2.1 Mounting Cut a square hole on the panel. The recommended hole size is 91mm x 91mm. Insert the device through the pre-cut hole. Panel Cutout + − 0.5mm Slide the retainer clip along the slots on both (top and bottom) sides of the de- vice until the device is tightly secured on the panel.

  • Page 10: Rear Terminal Description

    2.2 Rear Terminal Description Terminal Function Description 1 - 2 Auxiliary supply input Normally closed contact for RL1 Trip contact Normally open contact for RL1 Common contact for RL1 Common contact for RL2 Programmable contact Normally open contact for RL2 Normally closed contact for RL2 Not used 10 - 11...

  • Page 11: Wiring

    2.3 Wiring 2.3.1 Overall wiring connection RL1: Trip contact RL2: Uaux Programmable 85 ~ 265VAC contact 110 ~ 370VDC RL3: IRF contact Refer to Digital Input 1 section 2.3.2 (Note 1) for ZCT connection RS485 Port Termination Resistor (Note 2) Communication cable shield Note 1:...

  • Page 12: Zct Connection

    LOAD LOAD c) Single Phase System Earth Contactor shunt trip LOAD IMPORTANT NOTE All applications must comply with the following rules: 1. The device must work together with Mikro’s ZCT. 2. The EARTH wire must not pass through the ZCT.

  • Page 13: Front Panel

    3. Front Panel 3.1 Description Legend 2x16-digit LCD with backlight “UP” key display “DOWN” key Trip LED “ENTER” key Alarm LED “CLEAR” key Mikro logo and power on indicator “TEST/RECORD” key “ESC” key Model...

  • Page 14: Keypad

    3.2 Keypad Keypad Description To exit from menu and submenu (Note 1) To cancel setting value change (Note 3) To scroll up the menu (Note 2) To increase the setting value (Note 3) DOWN To scroll down the menu (Note 2) To decrease the setting value (Note 3) ENTER To enter submenu (Note 2)

  • Page 15: Menu

    4. Menu 4.1 Default Display Page 0 Leakage 12mA Page 1 Output 1 2 3 0 0 1 Page 2 Input 1 Page 3 Date* 12/03/2013 Time* 08:05:30am The default display is divided into 4 pages. Its menu can be navigated using the UP or DOWN keys.

  • Page 16: Main Menu

    4.2 Main Menu From the default display, the main menu can be reached by pressing the ENTER key. To return back to default display, press the ESC key once. Default display 1.MEASUREMENTS Refer to section 4.3.1 2.RECORDS Refer to section 4.3.2 3.CONFIGURATION Refer to section 4.3.3 4.PROTECTION G1...

  • Page 17: Sub Menu

    4.3 Sub Menu 4.3.1 MEASUREMENTS Menu Shows the real-time measured leakage current. 1.MEASUREMENTS Displays the real-time measured RMS leakage current 0.00 A Display the real-time measured funda- Fundamental mental leakage current 0.00 A 4.3.2 RECORDS Menu 2.RECORDS 2.1 Fault Rcrds Refer to section 4.3.2.1 2.2 Event Rcrds Refer to section 4.3.2.2...

  • Page 18: Fault Record

    4.3.2.1 Fault Record Whenever a leakage fault trips, the fault details are recorded in the fault record. The information about the fault type, fault current, date, time and protection set- ting at the time of trip is recorded. The user can use the UP or DOWN key to navigate through the fault records. 2.1 Fault Rcrds Note 1 In1 Trip...
  • Page 19 The user also can view the details of the fault record by navigating to the desired record and pressing the ENTER key, followed by the UP or DOWN key to scroll through the details of the record or the ESC key back to the fault display. In1 Trip Date and time of trip.

  • Page 20: Event Record

    4.3.2.2 Event Record Whenever any event has been triggered in the device, it is logged in the event record. The information about the type of event, event status, event date and time is recorded. 2.2 Event Rcrds Note 1 In1 Pickup 10/03/2010 09:04:41pm Note 2...

  • Page 21: Configuration Menu

    4.3.3 CONFIGURATION Menu 3.CONFIGURATION 3.1 Op Parameter Refer to section 4.3.3.1 3.2. Date & Time Refer to section 4.3.3.2 3.3 Group Select Refer to section 4.3.3.3 3.4 Display Refer to section 4.3.3.4 4.3.3.1 Op Parameter Menu Display Address Description Password 0215 Password to unlock the setting of parameters.

  • Page 22: Date And Time Menu

    4.3.3.2 Date and Time Menu Display Address Description Date 0206 - Sets the date 0207 Date Format 020A Sets the date format for display - DD/MM/YYYY or MM/DD/YYYY Time 0208 - Sets the time (hh:mm:ss) 0209 Time Format 020A Sets the time format for display. For the 12-hours format, am/pm is added immediately after the seconds digit 4.3.3.3 Group Select Menu...

  • Page 23: Parameter Displayed During Display Scroll

    4.3.3.5 Parameter Displayed During Display Scroll Display Description Leakage Real-time protection current display Output Real-time output contact physical status Input Real-time input port physical status Date, Time Real-time current date and time display Frequency Nominal frequency setting Sensing Protection sensing current setting Active Group Active protection group setting In1 Prot?

  • Page 24: Protection G1/G2 Menu

    4.3.4 PROTECTION G1/G2 Menu This menu configures the earth leakage protection function. Each protection group consists of two sets of protection. The content for PROTECTION G1 menu and PROTECTION G2 menu are identical except the addresses are 03xx for PROTECTION G1 and 04xx for PROTECTION G2. The selection of Protec- tion G1 or G2 is determined by the protection group setting.

  • Page 25: In2 Prot Menu

    4.3.4.2 In2 Prot Menu The In2 Prot menu has a similar content as the In1 Prot menu. It is applicable to the second set of the protection settings except the addresses are different. Display Address Description In2 Prot? 0308 Set Yes to enable the protection In2 Trip Rst 0309 Sets the trip reset method.

  • Page 26: Input Menu

    4.3.5 INPUT Menu 4.3.5.1 Input 1 Display Address Description Ip1 Func 0240 Sets function of Input 1. Refer to section 4.3.5.2 for details Ip1 Type 0240 Selects the Input 1 activation logic. Active High is when voltage is applied to the input terminals. Active Low is when the input terminals are open Rst Alarm 0241...

  • Page 27: Output Menu

    4.3.6 OUTPUT Menu 7.OUTPUT 7.1 Relay 1 Refer to section 4.3.6.1 7.2 Relay 2 Refer to section 4.3.6.2 4.3.6.1 Relay 1 Display Address Description Failsafe 0270 Sets the relay activation logic: No (Normal), Yes (Inverse) Reset 0270 Sets the relay reset method: Manual (latched), Auto (Unlatched) Trip function ZCT fault?

  • Page 28: Relay2

    4.3.6.2 Relay 2 Display Address Description Failsafe 0275 Sets the relay activation logic: No (Normal), Yes (Inverse) Reset 0275 Sets the relay reset method: Manual (latched), Auto (Unlatched) Trip function ZCT fault? 0276 Assigns the ZCT fault trip to RL2 In1 trip? 0276 Assigns the In1 trip to RL2 (Note 1)

  • Page 29: Communication Menu

    4.3.7 COMMUNICATION Menu Display Address Description Communication? 0210 Set Yes to enable MODBUS RTU communica- tion Remote Set? 0216 Set Yes to enable remote read and write to the device. Set No to allow only remote read of the device Baud Rate 0211 Sets the baud rate in bits per second (bps)

  • Page 30: Password

    5. Password Password Protection Device settings can be viewed anytime but locked from being changed. A pass- word is required for changing the settings. The password consists of four digits. The factory default password is 0000. The programming mode is indicated with the letter “P” on the right hand side of the display.

  • Page 31: Alarm

    6. Alarm Alarm Type Alarms are divided into two types: user resettable alarms and non-resettable alarms. For non-resettable alarms, the alarm are self reset by the relay once the alarm condition is removed. For resettable alarms, the user must ensure the cause of the alarm is removed before the alarm can be cleared.

  • Page 32: Technical Data

    Fault records Up to 50 records Recording resolution 1 ms COMMUNICATION Hardware interface Isolated RS485 Protocol Modbus-RTU Devide ID 1 to 255 REAL-TIME LEAKAGE CURRENT DISPLAY Range 10mA to 12.0A ZERO PHASE CURRENT TRANSFORMER (ZCT) ZCT type Mikro standard type ZCT...
  • Page 33 AUXILIARY POWER SUPPLY Rated voltage 100~240VAC or 140~340VDC Operating voltage 85~265VAC or 110~370VDC Rated frequency 50 or 60Hz Power consumption 6VA max INDICATORS Display 2x16-digit LCD Trip Red indicator Alarm Yellow indicator LOGIC INPUT Input type Optically isolated Rated voltage 50-270VAC or 20-380VDC External series resistor 18k ohm, 2W required for voltage greater than 94VAC or 132VDC...
  • Page 34 PRODUCT REFERENCE STANDARD IEC 60947-2 Annex M ELECTROMAGNETIC COMPATIBILITY IEC 61000-4-2 8kV, air discharge Electrostatic discharge 8kV, contact discharge IEC 61000-4-3 10V/m, 80MHz to 1GHz Radiated RF immunity IEC 61000-4-4 4kV power port Electrical fast transient 2kV signal port IEC 61000-4-5 4kV power port Surge 2kV signal port...

  • Page 35: Modbus

    8 MODBUS 8.1 MODBUS Protocol The RS485 port is located at the rear terminals and uses the MODBUS-RTU protocol. The communication setting is set in the COMMUNICATION Menu from the front panel or RS485 port. When changes are made through the RS485 port, modi- fications are restricted to the communication protocol registers or addresses ranging from 0211h to 0214h.

  • Page 36: Modbus Functions

    8.3 MODBUS Functions 8.3.1 Function 03h or 04h - Reading Input/Holding Register(s) This function code is used to read from 1 to 125 contiguous input registers in the device. The master specifies the starting register address and the number of registers to be read. The register data in the response message are packed as two bytes per register, with the binary contents right justified within each byte.

  • Page 37: Function 10H - Write Multiple Registers

    Request: Communication address 1 byte 0 to 255 (Note 1) Function code 1 byte 0x06 Register address 2 bytes 0x0000 to 0xFFFF Register value 2 bytes Value 2 bytes 2-byte CRC Note 1: 0 is a broadcast command to all slave devices. The slave devices will not respond to a broadcast command.

  • Page 38: Modbus Exception Code

    Response: Communication address 1 byte 1 to 255 (0xFF) Function code 1 byte 0x10 Starting address 2 bytes 0x0000 to 0xFFFF Quantity of registers 2 bytes 1 to 123 (0x7B) 2 bytes 2-byte CRC Error: Communication address 1 byte 1 to 255 (0xFF) Error code 1 byte 0x90...

  • Page 39: Modbus Registers

    8.5 MODBUS Registers 8.5.1 Product Information (Read only) Function code: 03h or 04h Addr Default Parameter *Format Unit Range (hex) (hex) 0000 Device type - ASCII ‘00’ 3030 main 0001 ASCII ‘06’ 3036 0002 ASCII ‘00’ 3030 0003 Device type - sub F1 ASCII ‘00’...

  • Page 40: Remote Command (Write Only)

    8.5.3 Remnote Command (Write only) Function code: 06h Addr Default Parameter *Format Unit Range (hex) (hex) 0100 Remote cmd Integer * Refer to section 8.6 for the mapping format 8.5.4 General Setting (Read/Write) Function code: 03h, 04h, 06h or 10h Addr Default Parameter...
  • Page 41 ... continue from previous page Addr Default Parameter *Format Unit Range (hex) (hex) 0212 Parity 0=none, 1=0dd, 0001 2=even 0213 Stop bits 0=1-bit, 1=2-bits 0000 0214 MODBUS 1-255 0001 address 0215 Password 0000 0000 0216 Remote set 0=No, 1=Yes 0001 parameters 0217- Reserved...

  • Page 42: Protection Group 1 (Read/Write)

    8.5.5 Protection Group 1 (Read/Write) Function code: 03h, 04h, 06h or 10h Addr Default Parameter *Format Unit Range (hex) (hex) 0300 Leakage 1 (In1) 0=Disable, 1=Enable 0001 0301 In1 trip reset 0=Manual, 1=Auto 0000 0302 In1 sensitivity 30-10000 001E (0.03-10A) (30mA) 0303 In1 time delay...

  • Page 43: Fault Record (Read Only)

    8.5.7 Fault Record (Read only) Function code: 03h or 04h Addr Parameter Format Unit Range Default (hex) 1000 Fault record 1 1001 Fault record 2 1031 Fault record 50 8.5.8 Event Record (Read only) Function code: 03h or 04h Addr Parameter Format Unit...

  • Page 44: Modbus Mapping Format

    8.6 MODBUS Mapping Format Code Description 2 bytes ASCII character Unsigned integer - Device status. Bit 0: EEPROM data failure Bit 1: Calibration data failure Bit 2: RTC data lost Bit 3: RTC error Bit 4: ADC error Bit 5: Watchdog reset Bit 10: Modbus database registers interlocking status Bit 11: Rear port (RS485) unread fault record Bit 14: Rear port (RS485) unread alarm record...
  • Page 45 ... continue from previous page Code Description Unsigned integer. High byte: hour (24-hour format) Low byte: minute Unsigned integer - Date and time format for relay display. High byte: Date format - 0=DD/MM/YYYY 1=MM/DD/YYYY Low byte: Time format - 0=12 hours 1=24 hours Unsigned integer - Change Group by...
  • Page 46 ... continue from previous page Code Description Unsigned integer - Relay operation status. Bit 0: Latch status (0=manual/latched, 1=auto/unlatched) Bit 1: Failsafe function (0=No, 1=Yes) Unsigned integer - Input reset option. Bit 0: Alarm reset Bit 1: Trip reset Bit 2: Output contact reset Unsigned integer - remote command.

  • Page 47: Records

    9 Records The device has three types of data records: (a) Alarm records, (b) Event records and (c) Fault records. Time resolution for the records is 1ms. To access the records, user can view the records from the device front panel (see section 4.3.2) or through the MODBUS-RTU communication.

  • Page 48: Example Of Reading Single Alarm Record

    ... continue from previous page Word number 5 Word number 6 Code Code Description Data Description Panel button test trip Input test trip Remote command trip Aux trip Blocking alarm Relay 1 ON Relay 1 latched Relay 2 ON Relay 2 latched IRF relay OFF Watchdog reset Calibration data error...
  • Page 49 Response: Field name Code Description Communication address Slave address is 1 Function code Reading input register Byte count 12 bytes Year high Word 1: Year Year low Month Word 2: Month, day. Hour Word 3: Hour, minute Minute Milliseconds high Word 4: Milliseconds Milliseconds low Record code high...

  • Page 50: Example Of Reading Multiple Consecutive Alarm Records

    9.1.4 Example of Reading Multiple Consecutive Alarm Records Request: Field name Code Description Communication address Slave address is 1 Function code Reading input register Starting address high Note 1 Starting address low Quantity of register high Note 2 Quantity of register low CRC high Error checking code CRC low...

  • Page 51: Event Record

    9.2 Event Record The event record (also referred to as event logging) operates continuously and records status changes of the protection functions, MODBUS registers, input port, output ports and etc. Up to 250 events can be stored in the cyclic buffer. When the buffer is full, the oldest event is overwritten as new events occur.
  • Page 52 ... continue from previous page Word number 5 Word number 6 Code Code Description Data Description Input test trip 0=Trip reset 1=Test trip Remote command trip 0=Trip reset 1=Rem cmd trip Aux trip 0=Trip reset 1=Aux trip Blocking alarm 0=Alarm reset 1=Block alarm Relay 1 status 0=De-energise...

  • Page 53: Fault Record

    9.3 Fault Record The fault record only pertains to the leakage fault trip. It records the device op- eration setting, protection setting and the fault current. The fault record data is captured at the instance when the device trips. Up to 50 faults can be stored in the cyclic buffer. When the buffer is full, the old- est fault is overwritten as new faults occur.
  • Page 56 (423468-T) 3, Jalan Anggerik Mokara 31/48, Sek 31, Kota Kemuning, 40460 Shah Alam, Selangor Darul Ehsan, Malaysia Tel : +603-55253863 Fax : +603-55253873 Website: www.itmikro.com Email: mikro@itmikro.com 1.01...

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