BIFFI ELBS-20 Installation, Operation And Maintenance Manual
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BIFFI ELBS-20 Installation, Operation And Maintenance Manual

Electronic line break system
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Biffi ELBS-20
Electronic Line Break System 20
Copyright © Biffi. The information in this document is subject to change without notice. Updated data sheets can be obtained from our website www.biffi.it or from your nearest Biffi Center:
Biffi Italia s.r.l. - Strada Biffi 165, 29017 Fiorenzuola d'Arda (PC) – Italy PH: +39 0523 944 411 – biffi_italia@biffi.it
Installation, Operation and Maintenance Manual
MAN712 Rev. 9
June 2021

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Summary of Contents for BIFFI ELBS-20

  • Page 1 Electronic Line Break System 20 Copyright © Biffi. The information in this document is subject to change without notice. Updated data sheets can be obtained from our website www.biffi.it or from your nearest Biffi Center: Biffi Italia s.r.l. - Strada Biffi 165, 29017 Fiorenzuola d'Arda (PC) – Italy PH: +39 0523 944 411 – biffi_italia@biffi.it...
  • Page 2 Revision Details Installation, Operation and Maintenance Manual June 2021 MAN712 Rev. 9 Revision Details Rev. Date Description Prepared Checked Approved June 2021 General update (Migration to new template) September 2020 Eighth Issue Piacenti Doglio July 2016 Seventh Issue Battaglia Vigliano October 2015 Sixth Issue Battaglia...

  • Page 3: Table Of Contents

    Installation, Operation and Maintenance Manual Table of Contents MAN712 Rev. 9 June 2021 Table of Contents Section 1: Reference Document Reference Document....................1 Section 2: General Safety Instructions Manufacturer ....................2 Intended Use ....................2 Terms and Conditions ................... 3 Manufacturer’s Liability ................. 3 Applicable Standards and Regulations ............
  • Page 4 Table of Contents Installation, Operation and Maintenance Manual June 2021 MAN712 Rev. 9 Section 7: Local Operator Interface Info Bar ....................... 57 Normal Mode Menu ..................58 Login Menu ....................59 View Mode and Setup Mode Menus ............60 7.4.1 View Graph of the Setup/View Mode Menus ........
  • Page 5 Installation, Operation and Maintenance Manual Table of Contents MAN712 Rev. 9 June 2021 Section 11: Restore Valve Control Restore Valve Control...................104 Section 12: Battery Maintenance and First Installation Battery Maintenance and First Installation............105 Section 13: Parts List 13.1 General Assembly ..................114 13.2 General Assembly ..................
  • Page 6 Installation, Operation and Maintenance Manual Notes MAN712 Rev. 9 June 2021 This page is intentionally left blank...

  • Page 7: Section 1: Reference Document

    Installation, Operation and Maintenance Manual Section 1: Reference Document MAN712 Rev. 9 June 2021 Section 1: Reference Document [1]: MDE226 - “ELBS-20 Biffi Assistant User Manual”. Reference Document...

  • Page 8: Section 2: General Safety Instructions

    The proper use of tools, lifting and transport equipment. WARNING The electronic parts of the ELBS-20 and all the options can be damaged by a discharge of static electricity. Before you start, touch a grounded metal surface to discharge any static electricity.

  • Page 9: Terms And Conditions

    June 2021 Terms and Conditions Biffi Italia guarantees each single product to be free from defects and to conform to current goods specifications. The warranty period is one year from the date of installation by the first user, or eighteen months from the date of shipment to the first user, whichever occurs first.

  • Page 10: Section 3: Storage

    In order to maintain these characteristics until the ELBS-20 is installed on site, proper attention must be observed for preservation during the storage period.

  • Page 11: Section 4: Device Description

    Analog Inputs (Pressure and Position Sensors) The ELBS-20 is provided with two (Pressure and Position) configurable (0 - 20 mA or 4 - 20 mA) analog inputs (AI). The ELBS-20 supplies a 14.5 V DC voltage to the sensors. Digital Inputs (Opto-isolated) The ELBS-20 is provided with three configurable opto-isolated Digital Inputs (DI).
  • Page 12 The SOV Control Outputs can be used also to drive a contactor of an electrical actuator (no SOVs required) to stroke the line valve to the fail-safe position. The ELBS-20 provides also the possibility to use DO1 and DO2 as SOVs Control Outputs. Integrity Check of the Safety Action Electrical Circuit The ELBS-20 allows monitoring the status of the Safety Action Electrical Circuits (dedicated SOV Control Output + Coil + Wiring Connection).

  • Page 13: Identification Of The Main Parts

    Section 4: Device Description MAN712 Rev. 9 June 2021 Identification of the Main Parts In this section only the main parts of the ELBS-20 are shown. Refer to Section 13 for a full list of the ELBS-20 parts. Figure 1 Table 1.

  • Page 14: Electronic Cards

    Section 4: Device Description Installation, Operation and Maintenance Manual June 2021 MAN712 Rev. 9 Electronic Cards 4.2.1 Electronic Cards - Pinout The figure below shows the 292ELBS100 block that is composed by the following electronic cards: • 492LBDS100: DISPLAY/BLUETOOTH CARD •...
  • Page 15 Installation, Operation and Maintenance Manual Section 4: Device Description MAN712 Rev. 9 June 2021 The figure below shows the 492LBBP100 – BATTERY PACK CARD. Figure 3 492LBBP100 - BATTERY PACK CARD Battery Pack Default 7.2 V DC EARTH CABLE (optional) Battery Pack Auxiliary 7.2 V DC...

  • Page 16: Electronic Card - Details (Jumpers, Fuses, Push-Buttons, Batteries)

    Section 4: Device Description Installation, Operation and Maintenance Manual June 2021 MAN712 Rev. 9 4.2.2 Electronic Card – Details (Jumpers, Fuses, Push-Buttons, Batteries) The figure below shows the Jumper Settings and the Fuses position of the Process Card. The Jumpers of the Process Card (Figure below) must be set as follows: •...
  • Page 17 Installation, Operation and Maintenance Manual Section 4: Device Description MAN712 Rev. 9 June 2021 The figure below shows the Jumper Settings, the Fuse position and the Emergency Push-buttons of the Interfaces Card. The Jumpers of the Interfaces Card (Figure below) must be set as follows: •...
  • Page 18 Section 4: Device Description Installation, Operation and Maintenance Manual June 2021 MAN712 Rev. 9 The figure below shows the Fuses position and the Battery Packs polarity of the Battery Pack Card. Figure 6 Battery Pack Card BATTERY PACK DEFAULT BATTERY PACK DEFAULT BATTERY PACK DEFAULT BATTERY PACK DEFAULT BATTERY PACK AUXILIARY...

  • Page 19: Technical Specifications

    Installation, Operation and Maintenance Manual Section 4: Device Description MAN712 Rev. 9 June 2021 Technical Specifications Table 2. External Power Supply 19.2 V DC - 57.6 V DC Supply Voltage Range (24 V DC -20% - 48 V DC +20%) Std Current Consumption without sampling and 70 mA - 24 V DC, 40 mA - 48 V DC display ON (Sleep Mode or during Safety Action) (1)
  • Page 20 Section 4: Device Description Installation, Operation and Maintenance Manual June 2021 MAN712 Rev. 9 Digital Outputs (SPST and DPST Relay Contacts) up to 120 V AC ± 10% and up to Maximum allowed Voltage 110 V DC ± 10% up to 1 A – 120 V AC Maximum switching power up to 1 A –...
  • Page 21 Installation, Operation and Maintenance Manual Section 4: Device Description MAN712 Rev. 9 June 2021 RS232 (Configuration Port) Baud rate 115200 bps Parity Bit Even Stop Bit Hardware flow control Distance (cable length) Max. 10 meters Bluetooth (Configuration Port) Baud rate 115200 Parity Bit None...

  • Page 22: Overall Dimensions (Ejb51 Cabinet)

    The EJB51 cabinet is normally provided when the following ordering options are selected: Cabinet Material = A and Cabinet Electrical Certification = B (see Section 16 for details). Options See Section 16 for the available options of the ELBS-20. Device Description...

  • Page 23: Section 5: Working Principle And Detailed Description

    Installation, Operation and Maintenance Manual Section 5: Working Principle and Detailed Description MAN712 Rev. 9 June 2021 Section 5: Working Principle and Detailed Description Working Principle The following figure shows the block diagram of the ELBS-20. Figure 8 Working Principle and Detailed Description...
  • Page 24 (EVENT 1, 3 and 5) (**) — 230 (*) samples preceding the event (EVENT 2, 4, 6) (***) The ELBS-20 transfers into the “event data memory” the following types of EVENT (****): EVENT 1 pressure value decreases of a pre-set amount (configurable parameter)
  • Page 25 (1, 2, 3, 4 and 6) are not stored in the data memory but in case of EVENTS 2, 4 and 6 the ELBS-20 sends a command to the actuator to stroke the valve to the fail-safe position (Safety Action).
  • Page 26 "event data memory". The Event 6 represents a Line Break that creates a pressure drop rate higher than the pipeline curve behavior present in the ELBS-20 memory. In this case, if the ELBS-20 is in VC or VC+ACQ operating mode, the actuator is controlled in order to stroke the pipeline valve in the fail position.
  • Page 27 "Memory 90%" is set to "On", a warning informs about the need to discharge the memory content in a portable PC in order to allow the ELBS-20 restarting its pipeline survey. The content of the "event data memory" can be used to build-up the pipeline pressure curve relevant to the period of survey, as shown in the figure below.

  • Page 28: Table Of Operating Modes

    No pressure, position and Battery Packs voltages measurement. No data acquisition and Safety Action. The local operator interface is still available. The ELBS-20 measures the Power Supply sources, the pressure and the position (if "enabled") with a time equal to Slow Sampling (SLOW) "Slow Sampling Rate"...

  • Page 29: Details Of The Valve Control Operating Mode

    Safety Action is performed and the test is finished. The event generated during the Self-Test routine is not stored. At the end of the test (both if interrupted and if Safety Action is performed) the ELBS-20 goes to the SLOW operating mode.
  • Page 30 If DO1 and DO2 Digital Outputs are used as SOV Control Outputs (see Section 6.2), the “Duration” parameter has no effect on them. DO1 and DO2 commute for initiating the Safety Action and it is necessary to set the ELBS-20 in VC or VC+ACQ Operating Mode to restore their initial status (see Section 11).

  • Page 31: Examples Of Pressure Drop Rate Control

    The AO is disabled (0 mA transmission) during the execution of the Safety Action. After the execution of the Safety Action the ELBS-20 goes to the Slow Sampling Operating Mode and for exiting from this status it is necessary to “manually” change the operating mode by using the available interfaces.

  • Page 32: Detailed Description

    Detailed Description In this section are described the functionalities of each input, output and interface of the ELBS-20. Refer to Section 4.2.1 and to Section 4.3 for the pinout and electrical limits of the ELBS-20. 5.2.1 Configuration-Managing Interfaces The ELBS-20 provides the following Configuration-Managing Interfaces: •...
  • Page 33 MAN712 Rev. 9 June 2021 5.2.1.1 Local Keypad and Display The ELBS-20 is fitted with a graphic 128x64 OLED display and 3 push-buttons that allows entering the configuration parameters or to visualize the working data. "ENTER" push-button "DOWN" push-button "UP" push-button Two push-buttons “DOWN”, “UP”...

  • Page 34: Power Supply (External - Battery Pack)

    These interfaces (when enabled) are always available if the External Power Supply is applied. When just the Battery Power Supply is present, it is necessary to wake-up the ELBS-20 by pressing the ENTER push-button and then the enabled interfaces become available.
  • Page 35 • The Operating Mode (see Section 5.1.1) When the only Battery Pack Power Supply is applied the ELBS-20 works in a “low-consumption” mode for increasing the Battery Pack life. During the “low-consumption” mode, if an EXTERNAL WAKE-UP (through ENTER button) does not occur, the ELBS-20 works in the following way: —...
  • Page 36 Section 5: Working Principle and Detailed Description Installation, Operation and Maintenance Manual June 2021 MAN712 Rev. 9 The table below describes the ELBS-20 working modes. For the SOV Control availability see Section 5.2.8. Table 4. Working mode Power Operating Input- Output – Interfaces Availability...

  • Page 37: Analog Output (Pressure Or Position Retransmission)

    5.2.3 Analog Output (Pressure or Position Retransmission) The ELBS-20 is provided with a configurable 4 - 20 mA analog output (AO). The AO can be used for the retransmission of the Pressure or Position measured by the AI. The AO can accept an external 24 V DC power supply or internally generate the 24 V DC, necessary for the 4 - 20 mA signal (see Section 9.1 for details about terminals).

  • Page 38: Analog Input - Pressure Transducer

    5.2.6 Analog Input - Pressure Transducer The ELBS-20 is provided with a configurable (0 - 20 mA or 4 - 20 mA) analog input (AI1) dedicated to the Pressure Transducers. The ELBS-20 supplies a 14.5 V DC voltage to the Pressure Transducer.
  • Page 39 RL1 and RL2: the coil is not energized (NO-C = open circuit, NC-C = short circuit). • SVC1 and SVC2: 0 V output. The ELBS-20 provides also the possibility to use DO1 and DO2 as SOVs Control Outputs when they are set as “SOV Control” (see Section 6.2 for details). Working Principle and Detailed Description...
  • Page 40 The Automatic Integrity Check is performed for the first time on a SOV Control Output Electrical Circuit when the Operating Mode of the ELBS-20 is set to VC or VC + ACQ and both the specific SOV Control Output is enabled and its own Automatic Integrity Check is enabled.

  • Page 41: Modbus Rtu

    If the Integrity Check fails on every enabled SOV Control Output the SAEC Alarm becomes active (see Section 6.4), the ELBS-20 goes to the SLOW Operating Mode, the Automatic Integrity Check is no more performed and it is necessary to clear this alarm and to manually set the desired Operating Mode.

  • Page 42: Section 6: Configuration Parameters

    MAN712 Rev. 9 Section 6: Configuration Parameters This section lists and describes the configuration parameters of the ELBS-20. For additional details, dealing with the mapping of parameters on the Local Operator Interface, see Section 7. For additional details, dealing with the mapping of parameters by using the “Biffi Assistant”...
  • Page 43 (see Section 5). Drop Enabled If set as “No” EVENT 5 and EVENT 6 Yes, 是, are not considered by the ELBS-20. It 压降速率启用 否 是 means that EVENT 5 is not stored and does not cause the Safety Action and that EVENT 6 is not stored.
  • Page 44 Section 6: Configuration Parameters Installation, Operation and Maintenance Manual June 2021 MAN712 Rev. 9 Parameters of the “View Mode” Menu and the “Setup Mode” Menu Default Available Parameter Name Description Range Value On (2) Set as “SVC1”, SVC1 is used as SOV Control Output.
  • Page 45 Installation, Operation and Maintenance Manual Section 6: Configuration Parameters MAN712 Rev. 9 June 2021 Parameters of the “View Mode” Menu and the “Setup Mode” Menu Default Available Parameter Name Description Range Value On (2) This command performs an Integrity Start Manual I.C. SVC Check of the set/available SVC (Start Manual Integrity Local, Serial,...
  • Page 46 Local, Serial, working mode (see Section 5.2.2.3). Applied) 否 Modbus. 否 If it is set as “No” the ELBS-20 works as 外部供电 the External Power Supply is not applied (see Section 5.2.2.3). It indicates the status of the output V.Ext.Status Def...
  • Page 47 Installation, Operation and Maintenance Manual Section 6: Configuration Parameters MAN712 Rev. 9 June 2021 Parameters of the “View Mode” Menu and the “Setup Mode” Menu Default Available Parameter Name Description Range Value On (2) This command performs an Integrity Start Manual I.C. SVC Check of the set/available SVC (Start Manual Integrity Local, Serial,...
  • Page 48 Position Sensor. Modbus. 位置传感器值 It determines in which way the AI2 (Position) input is read by the ELBS-20. Pos. Op. Mode Normal: 20 mA = 100% (Fully Open), (Position Operating 0 or 4 mA(*) = 0% (Fully Close)
  • Page 49 Installation, Operation and Maintenance Manual Section 6: Configuration Parameters MAN712 Rev. 9 June 2021 Parameters of the “View Mode” Menu and the “Setup Mode” Menu Default Available Parameter Name Description Range Value On (2) ARMED DO1 Function Local, Serial, It is the function associated to the DO1. See Section 6.2 阀门控制...
  • Page 50 Section 6: Configuration Parameters Installation, Operation and Maintenance Manual June 2021 MAN712 Rev. 9 Parameters of the “View Mode” Menu and the “Setup Mode” Menu Parameter Default Available Description Range Name Value On (2) DO6 Function Local, Serial, It is the function associated to the DO6. See Section 6.2 DO6功能...
  • Page 51 Analog Input 2 (Position) is re-transmitted. Before to change this parameter, to be sure that “AO Enabled” is set to NO. AO Supply If it is set as “Internal” the ELBS-20 (Analog Output generates the 24 V DC, necessary for Internal, Internal Local, Serial, 内部,...
  • Page 52 是, (Bluetooth Enabled) enabled (see Section 5.2.2.3 Short Modbus. 否 否 for details). 蓝牙 Blue. Type For Biffi use only. It is not visible Long, Short Local, Serial, 长, (Bluetooth Type) through Biffi Assistant when logged in Short Modbus. 短...
  • Page 53 Start the Test Safety Action. The test function forces the execution of the Safety Action if the ELBS-20 is in VC Start Test Safe Act. or VC+ACQ mode. This test cannot be (Start Test Safety...
  • Page 54 Description Range Value On (2) Date It is the date (dd-mm-yyyy) “updated” 01-01-1990 Local, Serial, actual by the RTC of the ELBS-20. 31-12-2099 Modbus. 日期 Time It is the time (hh:mm:ss) “updated” by 00-00-00 Local, Serial, actual the RTC of the ELBS-20.
  • Page 55 = “Events Stored”. 1-1000 Modbus. 事件编号 This parameter can “automatically” change its value during the Export of the graphs through “Biffi Assistant” (see [1]). The Event type and the related date and time of the selected event (“Event ID”) are shown. Local, Event Info If “Event ID”...
  • Page 56 Serial (RS232, RS485 and Bluetooth) and MODBUS (MODBUS RTU) interfaces allow download ing the curve of each event. After a “wake-up” of the ELBS-20, the values of these parameters are updated after the first sampling of the pressure according to the values of “S.Rate” and “Slow S.Rate”.

  • Page 57: Precision Of The Analog Inputs

    Installation, Operation and Maintenance Manual Section 6: Configuration Parameters MAN712 Rev. 9 June 2021 Precision of the Analog Inputs The Analog Inputs have the following precision depending on the input type: — Input 0 - 20 mA: 0.5% — Input 4 - 20 mA: 0.5% The value of the Pressure is shown and stored (event data memory) in the following way depending on the size of the Pressure Transducer: —...

  • Page 58: Table Of Digital Outputs Functions

    If DO1 or DO2 are used as SOVs Control Outputs (connected to the SOVs), it is necessary to follow the “Restore the Valve Control” procedure (see Section 11) to correctly clear them. ARMED It is active when the ELBS-20 is in VC or VC+ACQ operating mode (see Section 5.1.1). 阀门控制模式 ALARM It is active when at least one alarm is active (see Section 6.4).

  • Page 59: Table Of Digital Inputs Functions

    SLOW This function works always as “Self-Maintained” command (minimum duration 1 second). When it is active the ELBS-20 performs a Manual Integrity Check on the SVCs that are enables as SOV Control Outputs. See .C.SVC Section 5.2.8.1 for details about the Integrity Check.

  • Page 60: Tables Of The Alarms And Warnings

    (example: SVC1 and SVC2 are the enabled SOV Control Output and “SVC1 Status” = “Bad” and “SVC2 Status” = “Bad”) Reset It is not a real alarm; it is just logged in the “Alarms List” after a RESET reset (power cycle) of the ELBS-20 重启 Configuration Parameters...
  • Page 61 Reset It is not a real warning; it is just logged in the “Warnings List” after RESET a reset (power cycle) of the ELBS-20. 重启 NOTE: (*): The Active Alarms and Warnings are cleared after a power cycle of the device. After the power cycle if the cause of the alarm or of the warning is still present, the alarm or warning will be again activated.

  • Page 62: Section 7: Local Operator Interface

    This section describes the Local Operator Interfaces that is available by using the local Push-buttons and the display. The ELBS-20 is fitted with a graphic 128x64 OLED display and 3 push-buttons that allows entering the configuration parameters or to visualize the working data.

  • Page 63: Info Bar

    MAN712 Rev. 9 June 2021 Info Bar The Info Bar is present in every display-screen of the Local Operator Interface. It contains the following pieces of information: • ELBS-20 Status • Login Type • Operating Mode • Applied Power Supplies •...

  • Page 64: Normal Mode Menu

    Section 7: Local Operator Interface Installation, Operation and Maintenance Manual June 2021 MAN712 Rev. 9 Normal Mode Menu The Normal Mode Menu is composed of four display-screens, which are available without any password and give some general pieces of information. The language of the Normal Mode Menu is defined by the “Language”...

  • Page 65: Login Menu

    Installation, Operation and Maintenance Manual Section 7: Local Operator Interface MAN712 Rev. 9 June 2021 Login Menu The Login Menu allows entering in the View Mode Menu (without password) as “Guest” and in the Setup Mode Menu (with password) as “Operator”, “Administrator” or “Developer”. Figure 16 View Mode ENTER...

  • Page 66: View Mode And Setup Mode Menus

    For making easier the reading of the View Graph, a different color is associated to the different entries of the menus. Menu and Sub-Menu Exit of Menu and Sub-Menu Available Parameter Available Command/Calibration Unavailable Parameter or Command/Calibration (for Biffi use only) View Mode Menu 查看模式 Setup Mode Menu ..Exit View-Setup 设置模式 退出查看-设置模式...
  • Page 67 Installation, Operation and Maintenance Manual Section 7: Local Operator Interface MAN712 Rev. 9 June 2021 Safety Outputs ..Exit Safety Outputs 安全控制 退出安全控制 SVC Enabled 电磁阀控制 Relays Enabled 继电器控制 Delay 延时启动 Duration 持续时间 Integrity Check ..Exit Int. Check 控制回路检测 退出控制回路检测 Int. Check SVC ..Exit Int.
  • Page 68 Section 7: Local Operator Interface Installation, Operation and Maintenance Manual June 2021 MAN712 Rev. 9 Manual Battery Check 手动检测电池组 V.Bat. Status Def 默认电池组状态 V. Bat. Def 默认电池组电压 V.Bat. Status Aux 备用电池组状态 V. Bat. Aux 备用电池组电压 Sensors ..Exit Sensors 传感器设置 退出传感器设置 Pressure Sensor ..Exit Press.
  • Page 69 Installation, Operation and Maintenance Manual Section 7: Local Operator Interface MAN712 Rev. 9 June 2021 ..Exit DO3 DO3设置 退出DO3 DO3 Function DO3功能 DO3 Op. Mode DO3动作 DO3 Status DO3状态 ..Exit DO4 DO4设置 退出DO4 DO4 Function DO4功能 DO4 Op. Mode DO4动作 DO4 Status DO4状态...
  • Page 70 Section 7: Local Operator Interface Installation, Operation and Maintenance Manual June 2021 MAN712 Rev. 9 ..Exit DI2 DI2设置 退出DI2 DI2 Function DI2功能 DI2 Act. If DI2激活 DI2 Command DI2触发方式 DI2 Status DI2状态 ..Exit DI3 DI3设置 退出DI3 DI3 Function DI3功能 DI3 Act. If DI3激活...
  • Page 71 Installation, Operation and Maintenance Manual Section 7: Local Operator Interface MAN712 Rev. 9 June 2021 Interfaces ..Exit Interfaces 通信接口设置 退出通信接口 Bluetooth ..Exit Bluetooth 蓝牙设置 退出蓝牙 Blue. Enabled 蓝牙 Blue. Type 蓝牙类型 Blue. Name 蓝牙名称 Modbus ..Exit Modbus Modbus 退出Modbus Mod. Enabled Modbus Mod.
  • Page 72 Section 7: Local Operator Interface Installation, Operation and Maintenance Manual June 2021 MAN712 Rev. 9 Device ID ..Exit Device ID 设备铭牌 退出设备铭牌 Device Type 设备类型 Manufacturer 制造商 Serial Number 序列号 FW Int. 接口板固件版本 FW Pro. 主板固件版本 Tag Name 位号 Date and Time ..Exit Date and Time 日期和时间...

  • Page 73: Push-Buttons Functionality

    Installation, Operation and Maintenance Manual Section 7: Local Operator Interface MAN712 Rev. 9 June 2021 7.4.2 Push-buttons Functionality Two push-buttons “DOWN”, “UP” are used: • to move into the Menus and the Sub-Menus • to change the value of a selected parameter The Menus and Sub-Menus are not “circular”...

  • Page 74: Section 8: Modbus Rtu Interface

    (only when External Power Supply is applied). Bus Termination : Configurable via local operator interface or serial interfaces. Temperature : ELBS-20 temperature range EMC Protections : ELBS-20 EMC protection Baud Rate : Configurable via local operator interface or serial interfaces...

  • Page 75: Modbus Wirings

    8.3.1 Modbus RS485 Transmission Mode The ELBS-20 Modbus RTU module uses a half-duplex, multidrop, serial communication line RS485. The module communicates with the masters via RS485 interface. Transmission speed from 600 bit/sec to 38400 bit/sec is available. One unique transmission speed is allowed for all devices on the bus when the system works.
  • Page 76 Ground Ground The Modbus RTU interface takes its electrical supply from the ELBS-20 power supply. The RS485 bus transceiver is isolated from the “other” electronics. The bus termination, located inside the device, should be used only if the device is at the beginning or at the end of the bus segment and if there is no external termination.

  • Page 77: Modbus Function Description

    The following paragraph describes the input and output messages of ELBS-20 Modbus RTU Interface. In all cases it is called “input signal” a data flowing from the ELBS-20 to the bus, vice versa it is called “output signal” a data flowing from the bus to the ELBS-20.

  • Page 78: Function Code 03 (0X03) Read Holding Registers

    This function code is used to read the contents of a contiguous block of holding registers (from 1 to 125) in a slave device. The ELBS-20 Modbus RTU Interface has implemented 315 holding registers. If quantity of registers requested is less than 1 or more than 125, Exception Code 03 (0x03) is generated.

  • Page 79: Function Code 06 (0X06) Write Single Register

    This function code is used to write a value of a single holding register in a remote device. The ELBS-20 Modbus RTU Interface has implemented 315 holding registers. If address of register is more than 314, Exception Code 02 (0x02) is generated.

  • Page 80: Function Code 16 (0X10) Write Multiple Registers

    This function code is used to write a block of contiguous registers in a slave device. The ELBS-20 Modbus RTU Interface has implemented 315 Holding Registers. If quantity of registers is less than 1 or more than 125, Exception code 03 (0x03) is generated.

  • Page 81: Function Code 72 (0X48) Read Event Data

    “Event ID” is not available (less than 1 or greater than 1000), Exception Code 03 (0x03) is generated. Broadcast messages are not allowed. The ELBS-20 stores up to 1000 event data. Each event is composed 115 samples (2 bytes per sample) for each applied sensor (Pressure and optionally Position).
  • Page 82 Section 8: Modbus RTU Interface Installation, Operation and Maintenance Manual June 2021 MAN712 Rev. 9 Example of a request of Read Data Event to device 2 (ELBS-20) for “Event ID” = 5 and Sensor type = Pressure. Table 20. Request...

  • Page 83: Function Code 101 (0X65) Read Alarms And Warnings Logs

    Function Code 101 (0x65) Read Alarms and Warnings Logs This function code is used to read the stored alarms and warnings of the ELBS-20. If the requested “Alarms/Warnings” is not available (different from 1 or 2), Exception Code 03 (0x03) is generated. Broadcast messages are not allowed.
  • Page 84 Section 8: Modbus RTU Interface Installation, Operation and Maintenance Manual June 2021 MAN712 Rev. 9 Table 24. Alarm Id Alarm Type (*) Warning ID Warning Type (*) NONE NONE RESET RESET AI1_PR MEM_90 CONF TEMP SLEEP MAINT SAEC AI2_PO (*) See Section 6.4 for Details INTER V_EX_D V_EX_A...

  • Page 85: Exception Codes

    The slave receives the request without communication error, but it cannot process the data. In this case the slave returns an Exception Error message that describes the error. The ELBS-20 Modbus RTU Interface has implemented the following Exception Codes: Table 27. Exception Code...

  • Page 86: Holding Registers Map

    Section 8: Modbus RTU Interface Installation, Operation and Maintenance Manual June 2021 MAN712 Rev. 9 Holding Registers Map See Section 6 for details about the parameters. Table 28. Description Address Name Range Units (for full description see Section 6) Pressure 0 - 10000 0 = 0,00 Reserved...
  • Page 87 Installation, Operation and Maintenance Manual Section 8: Modbus RTU Interface MAN712 Rev. 9 June 2021 Description Address Name Range Units (for full description see Section 6) Time mm:ss(BCD format) 0 = SLOW, 1 = VC, 2 = ACQ, 3 = VC+ACQ, Operating Mode 0 - 4 4 = SLEEP...
  • Page 88 Section 8: Modbus RTU Interface Installation, Operation and Maintenance Manual June 2021 MAN712 Rev. 9 Description Address Name Range Units (for full description see Section 6) SVC Enabled 0 - 2 0 = None, 1 = SVC1, 2 = Both Relay Enabled 0 - 2 0 = None, 1 = RL1, 2 = Both...
  • Page 89 Installation, Operation and Maintenance Manual Section 8: Modbus RTU Interface MAN712 Rev. 9 June 2021 Description Address Name Range Units (for full description see Section 6) Reserved 0 - 1 Reserved 0 - 65535 Reserved 0 - 1 Reserved 0 - 65535 Reserved 0 - 1 Reserved...
  • Page 90 Section 8: Modbus RTU Interface Installation, Operation and Maintenance Manual June 2021 MAN712 Rev. 9 Description Address Name Range Units (for full description see Section 6) 0 = SOV C., 1 = S.ACT., 2 = OFF, 3 = ARMED, 4 = ALARM, 5 = ACQ., 6 = WARN., 7 = V.E.KO, DO2 Function 0 - 16 8 = V.B.KO, 9 = B.MNT., 10 = S.A.DONE,...
  • Page 91 Installation, Operation and Maintenance Manual Section 8: Modbus RTU Interface MAN712 Rev. 9 June 2021 Description Address Name Range Units (for full description see Section 6) 0 = OFF, 1 = SLOW EN, 2 = S.A.C., 3 = CLR.M., DI1 Function 0 - 7 4 = VC EN, 5 = ACQ EN, 6 = I.C.SVC, 7 = I.C.RL Reserved...
  • Page 92 0 - 1 Start Test Safety 0 - 1 0 = No, 1 = Start Action Device Type 0 - 1 0 = ELBS-20, 1 = ELBS-30 Manufacturer 0 = Biffi Serial Number ASCII Serial Number (MSB) Serial Number ASCII...
  • Page 93 Installation, Operation and Maintenance Manual Section 8: Modbus RTU Interface MAN712 Rev. 9 June 2021 Description Address Name Range Units (for full description see Section 6) Tag Name ASCII Tag Name ASCII Tag Name ASCII Tag Name ASCII Tag Name (LSB) Reserved - Not Used Reserved - Not Used Reserved - Not Used...
  • Page 94 Section 8: Modbus RTU Interface Installation, Operation and Maintenance Manual June 2021 MAN712 Rev. 9 Description Address Name Range Units (for full description see Section 6) Alarm Info - Date dd/mm (BCD format) Alarm Info - Date yyyy (BCD format) Alarm Info - Time 00:hh (BDC format) Alarm Info - Time...

  • Page 95: Section 9: Typical Connections

    Installation, Operation and Maintenance Manual Section 9: Typical Connections MAN712 Rev. 9 June 2021 Section 9: Typical Connections Signals Description Figure 21 Typical Connections...
  • Page 96 The following table describes the “standard” signals on the DIN RAIL Terminals that are the ones available for the customers’ connections. This Table is valid for the “standard” configuration of the ELBS-20, without any additional part (AC/DC converter, Surge Suppressor, etc.).
  • Page 97 Installation, Operation and Maintenance Manual Section 9: Typical Connections MAN712 Rev. 9 June 2021 Type Signal Name Description Configurable relay dry contact. See Section 5.2.5 for details. Spare terminal. Configurable relay dry contact. See Section 5.2.5 for details. Spare terminal. Configurable relay dry contact.
  • Page 98 Section 9: Typical Connections Installation, Operation and Maintenance Manual June 2021 MAN712 Rev. 9 The picture below shows the standard layout of the ELBS-20 DIN Rail Terminals. Figure 22 Typical Connections...

  • Page 99: Typical Connections Example

    This example shows the ELBS-20 used as a “stand-alone” device. • The ELBS-20 is not connected to any other equipment (DCS, Logic Solver, PLC, etc.). • External Power Supply is not available and the ELBS-20 uses the Battery Pack as power supply.
  • Page 100 Section 9: Typical Connections Installation, Operation and Maintenance Manual June 2021 MAN712 Rev. 9 Figure 24 Typical Connections...

  • Page 101: Example 2 - Typical Connection

    External Power Supply is available (the Battery Pack is used as back up). • The ELBS-20 monitors both the pressure (external pressure transducer) and the position (external position sensor). • The ELBS-20 manages two “standard” SOVs (Relay contacts are used) to initiate the Safety Action. Figure 25 Typical Connections...
  • Page 102 Section 9: Typical Connections Installation, Operation and Maintenance Manual June 2021 MAN712 Rev. 9 Figure 26 Typical Connections...

  • Page 103: Section 10: Installation - Start-Up

    June 2021 Section 10: Installation – Start-Up If ordered as part of an actuator, the factory mounts the ELBS-20 device together with the actuator, makes connections (pneumatic, hydraulic and electrical) to the actuator, sets up and calibrates the instrument. If ELBS-20 device is purchased separately, see the following instructions for mounting the ELBS-20 device.

  • Page 104: Installation In Ambient With Explosive Dusts

    Verify that the fixing elements (screws, nuts etc.) used for fastening the ELBS-20 cabinet can sustain at least four times the weight of the ELBS-20 unit; Example: for the EJB-51 cabinet (Al) the fixing elements must be able to sustain at least 160 kg.

  • Page 105: Cables And Electrical Connections

    National Standards or the Regulatory Authorities that have certified the ELBS-20s. Method of sealing and cable glands must be approved and separately certified for use in hazardous areas. The ELBS-20 enclosure must be connected to the EARTH trough the External EARTH stud. Figure 27 External EARTH Stud For the earth connection of the cables dedicated DIN RAIL TERMINALS are provided.

  • Page 106: Cables Requirements - Emc Protection

    10.4.2 Cables Requirements – EMC Protection The table below resumes the specifications of the cables, for connecting with the ELBS-20. Particularly there is indicated if a cable needs to be armoured or shielded. “Shielded” must be considered as a more strict condition than “Armoured”.

  • Page 107: Wires Dimensions

    Configure the SLEEP Operating Mode. This operation must be performed before connecting the ELBS-20 (pneumatic or hydraulic and electrical connections) for avoiding that the ELBS-20 is in an operating mode that can cause a not desired Safety Action (VC or VC + ACQ).
  • Page 108 Set the Operating Mode as SLOW. The ELBS-20 cannot perform the Safety Action, but it can read the signals of the sensors.

  • Page 109: Position Limits Calibration (Optional)

    This procedure allows the ELBS-20 to accept a tolerance on the retransmission current corresponding to the position limits. If this procedure it is not performed the ELBS-20 considers 0 mA – 20 mA or 4 mA – 20 mA (according with the “Pos. Signal” setting) as current values corresponding to the position limits (Fully Closed and Fully Open).

  • Page 110: Section 11: Restore Valve Control

    MAN712 Rev. 9 Section 11: Restore Valve Control After the execution of the Safety Action (see Section 5.1.2.7), the ELBS-20 enters in the Slow Sampling (SLOW) Operating Mode. The ELBS-20 cannot initiate another Safety Action, if the Valve Control conditions are not restored.

  • Page 111: Section 12: Battery Maintenance And First Installation

    Installation of the Battery Packs. All the points must be performed in the order they appear. It is assumed that the configuration of the ELBS-20 is correct; the Battery Packs declared (“V.Bat.Applied”, “V.Bat.Dual”) are actually used. See Sections 5.2.2.2, 6 and 7 for details.
  • Page 112 Section 12: Battery Maintenance and First Installation Installation, Operation and Maintenance Manual June 2021 MAN712 Rev. 9 Loosen the two screws fixing CN2 of the Process Card (see Section 4.2.1) and remove the connector. Figure 30 Loosen the two screws fixing CN3 (if wired) of the Process Card (see Section 4.2.1) and remove the connector.
  • Page 113 Installation, Operation and Maintenance Manual Section 12: Battery Maintenance and First Installation MAN712 Rev. 9 June 2021 Loosen the two screws fixing the Battery Pack Card and remove it. Figure 32 Remove the Battery Cells (if present) of the Auxiliary Battery Pack. Figure 33 Battery Maintenance and First Installation...
  • Page 114 Section 12: Battery Maintenance and First Installation Installation, Operation and Maintenance Manual June 2021 MAN712 Rev. 9 Remove the Battery Cells (if present) of the Default Battery Pack. Figure 34 Put the four “new” Battery Cells of the Default Battery Pack into the dedicated Battery Holder (see Section 4.2.2).
  • Page 115 Installation, Operation and Maintenance Manual Section 12: Battery Maintenance and First Installation MAN712 Rev. 9 June 2021 If used, put the four “new” Battery Cells of the Auxiliary Battery Pack into the dedicated Battery Holder (see Section 4.2.2). Be careful at the battery cells polarity.
  • Page 116 Section 12: Battery Maintenance and First Installation Installation, Operation and Maintenance Manual June 2021 MAN712 Rev. 9 If used, measure (by a Multimeter) the voltage on the 3 wires connector of the cable of the Auxiliary Battery Pack and verify the voltage between the pins 1-3 and 2-3.
  • Page 117 Installation, Operation and Maintenance Manual Section 12: Battery Maintenance and First Installation MAN712 Rev. 9 June 2021 Fasten the two screws of the Battery Pack Card. Figure 40 If used, connect the 3 wires connector of the Auxiliary Battery Pack to CN3 of the Process Card and fasten its screws.
  • Page 118 Card and fasten its screws. Figure 42 Verify the date of the ELBS-20. If it is not the present one, set it to the right value. Launch the “Update Battery Maintenance Command verify that the status of the used Battery Packs is “OK” (see Sections 6 and 7) and that the “Next. Batt. Maint.”...

  • Page 119: Section 13: Parts List

    Section 13: Parts List This section includes the drawings and the part list of the General Assembly and of the Spare Parts of the ELBS-20. NOTICE When ordering spare parts, please indicate the serial number embossed on the device nameplate.

  • Page 120: General Assembly

    General Assembly Figure 43 Table 31. Pos. Description CABINET MOD. EJB51 (*) EJB51 INTERNAL PLATE (*) ELBS-20 CARDS BRACKET PROCESS CARD INTERFACES CARD DISPLAY/BLUETOOTH CARD DISPLAY/BLUETOOTH CARD MASK BATTERY PACK LEFT BRACKET BATTERY PACK RIGHT BRACKET BATTERY PACK CARD (opt.) 10.1...

  • Page 121: General Assembly

    NUT M3 (opt.) – AISI 316 VTCP M3x10 (opt.) – AISI 316 NOTES: (*): Available as a unique code (292ELBS100) completed with spacers and screws already mounted. (**): Available as unique code (292LBBP100). (***): Contact Biffi for the shipment availability. Parts List...

  • Page 122: Section 14: Decommissioning

    Decommissioning Figure 45 Disposal and recycling At the end of the life of ELBS-20, the device must be disassembled. WARNING Do not dump non-biodegradable products, lubricants and non-ferrous (rubber, PVC, resins, etc.) into the environment. Dispose of all such materials as indicated in the following table.

  • Page 123: Section 15: Troubleshooting

    (see Section 4.2.2) • Verify the fuses F1-F2 and F3-F4 (only when the auxiliary battery pack is THE ELBS-20 DOES NOT WAKE UP WHEN THE ENTER present) of the Battery Pack Card PUSH-BUTTON IS PRESSED (BATTERY PACK AS POWER (see Section 4.2.2) SUPPLY SOURCE) •...
  • Page 124 Section 15: Troubleshooting Installation, Operation and Maintenance Manual June 2021 MAN712 Rev. 9 Detected problem Actions to be performed • Verify that the wiring is correct • Verify the termination setting PROBLEM WITH THE MODBUS COMMUNICATION • Verify that the port is enabled •...

  • Page 125: Section 16: Ordering Table

    Installation, Operation and Maintenance Manual Section 16: Ordering Table MAN712 Rev. 9 June 2021 Section 16: Ordering Table Refer to the Technical data sheet available at the Biffi website. Ordering Table...
  • Page 126 VCIOM-08305-EN ©2021 Biffi. All rights reserved. Biffi Italia s.r.l. Strada Biffi 165 The contents of this publication are presented for information purposes only, 29017 Fiorenzuola d’Arda (PC) and while every effort has been made to ensure their accuracy, they are not...

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