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BIFFI EHO Installation, Operation And Maintenance Manual

Spring-return actuator
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Biffi EHO (Electro-Hydraulic Operated)
Spring-Return Actuator
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
VCIOM-15345-EN Rev. 4
December 2024

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Summary of Contents for BIFFI EHO

  • Page 1 Spring-Return Actuator 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 December 2024 VCIOM-15345-EN Rev. 4 Revision Details Revision Date Description Prepared Checked Approved Ontario Engineering December 2024 New display and features Jamie Lorentz Massimiliano Franco Department October 2024 MarCom use only Massimiliano Franco October 2024 MarCom use only Massimiliano Franco...

  • Page 3: Table Of Contents

    Preparation ......................5 Valve Preparation ....................6 Actuator Preparation ..................... 6 Lifting the Biffi EHO Actuator ................7 Installing the Biffi EHO Actuator on the Valve ..........13 Setting the Stroke Limit Stops ................14 Hydraulic Fluid ......................15 Accumulator (Optional)..................16 Section 3: Electrical Connections Remove Separate Terminal Chamber (STC) Cover ........21...
  • Page 4 Functional Description ..................40 Actuator Operation Channels ................42 Section 7: Local Display Module (LDM) Positions and Functions of Selector Knob ............44 Section 8: Customizing Biffi EHO Settings Entering the Setup Menu ...................45 Change Settings ....................47 Menu Tree ......................49 EHO Configuration Menu ...................53 Alarms........................64...

  • Page 5: Section 1: Introduction

    The Biffi EHO accepts a wide range of single-phase, three-phase or DC power sources. A hydraulic hand pump can be used to stroke the actuator during commissioning or in the event of an emergency power loss.

  • Page 6: Safety Information

    Identifies precautions the user must take to avoid personal injury or equipment damage. NOTICE Highlights information critical to the user’s understanding of the Biffi EHO valve actuator installation or operation. Refer to the Biffi OLGA-H, OLGAS-H for Hydraulic RPHD or RPHS Installation, Operation and Maintenance (IOM) Manual for additional details.

  • Page 7: Abbreviation Definitions

    Installation, Operation and Maintenance Manual Section 1: Introduction VCIOM-15345-EN Rev. 4 December 2024 Abbreviation Definitions Abbreviations used in this manual and their definitions are listed in Table 1. Table 1. Abbreviation Definitions Abbreviation Definition Installation Operation Manual Emergency Shutdown Fail-Safe Spring-Return Double-Acting MAWP...

  • Page 8: Section 2: Installation

    Chains and lifting straps that are inspected and certified for the weight of the Biffi EHO actuator (check shipping weights) Sealant for all cable and conduit entries (approvable by the National Electric Code or your country standard and...

  • Page 9: Valve Preparation

    With the valve in the closed position, the key slot should be 90° to the run of the valve. 2.2.4 The Biffi EHO actuator may be mounted to the valve at any time regardless of whether or not the valve is under pressure. Actuator Preparation 2.3.1...

  • Page 10: Lifting The Biffi Eho Actuator

    NOTICE All Biffi EHO OLGA-H/OLGAS-H-Series or RPHD/RPHS-Series Considerations When handling any Biffi EHO OLGA-H/OLGAS-H Series or RPHD/RPHS Series be aware of tubing, accessories, hand pump, accumulators, local display module and control enclosures. Straps and chains can become entangled and cause damage to these components.
  • Page 11 Never lift the actuator with a valve attached. Always handle actuator/valve assemblies by attaching lifting equipment to the valve only. CAUTION Please note that other mounting positions are available. If needed, please contact the factory. CAUTION Please pay attention to the thermal accumulator during the EHO handling. Installation...
  • Page 12 Never lift the actuator with a valve attached. Always handle actuator/valve assemblies by attaching lifting equipment to the valve only. CAUTION Please note that other mounting positions are available. If needed, please contact the factory. CAUTION Please pay attention to the thermal accumulator during the EHO handling. Installation...
  • Page 13 Never lift the actuator with a valve attached. Always handle actuator/valve assemblies by attaching lifting equipment to the valve only. CAUTION Please note that other mounting positions are available. If needed, please contact the factory. CAUTION Please pay attention to the thermal accumulator during the EHO handling. Installation...
  • Page 14 Section 2: Installation Installation, Operation and Maintenance Manual December 2024 VCIOM-15345-EN Rev. 4 2.4.1.3 Vertical Actuator, Horizontal Valve Stem Properly connect the actuator lifting eyelets (1) with chains, and use suitable slings to connect support brackets (2) and (3). Figure 3. Support Braket Points LIFTING POINT SUPPORT BRACKETS (2)
  • Page 15 Never lift the actuator with a valve attached. Always handle actuator/valve assemblies by attaching lifting equipment to the valve only. CAUTION Please note that other mounting positions are available. If needed, please contact the factory. CAUTION Please pay attention to the thermal accumulator during the EHO handling. Installation...

  • Page 16: Installing The Biffi Eho Actuator On The Valve

    Installation, Operation and Maintenance Manual December 2024 VCIOM-15345-EN Rev. 4 Installing the Biffi EHO Actuator on the Valve The actuator will be bolt-mounted directly to a bracket or adaptor that will be bolted securely to the mounting flange top works of the valve.

  • Page 17: Setting The Stroke Limit Stops

    VCIOM-15345-EN Rev. 4 December 2024 Setting the Stroke Limit Stops 2.6.1 The Biffi OLGA-H/OLGAS-H or RPHD/RPHS actuator is provided with bidirectional travel stops allowing 80° to 100° total travel (+/- 5° adjustment at each end of the 90° stroke). 2.6.2 Actuators are shipped from the factory with the travel stops adjusted for approximately 90°...

  • Page 18: Hydraulic Fluid

    22/32 ® Use an equivalent or better product in compliance with the oil proposed in the actual scope of supply by Biffi. Your oil supplier can verify and propose an alternative product at your responsibility. • Low Temperature Fluid (use with -40 to 60 °C /-40 to 140 °F applications) —...

  • Page 19: Accumulator (Optional)

    2.8.1 Introduction The Biffi EHO actuator may be equipped with an accumulator for modulating valve control or to enable manual operation of the actuator if there is a loss of electrical power. Accumulators always have the nitrogen pressure drained for shipping.
  • Page 20 Section 2: Installation Installation, Operation and Maintenance Manual December 2024 VCIOM-15345-EN Rev. 4 NOTICE For temperatures that do not appear on the graph, the formula to calculate the pre-charge pressure shown on the General Arrangement Picture Assembly should be used. NOTICE Recheck the pre-charge pressure after a time interval sufficient to insure the nitrogen pressure is equal to the ambient temperature (a minimum of 4 hours).
  • Page 21 Installation, Operation and Maintenance Manual Section 2: Installation VCIOM-15345-EN Rev. 4 December 2024 Figure 5. Typical EHO Optional Accumulator System TO MANIFOLD POWER PORT TO CYLINDER Table 3. Typical EHO Optional Accumulator System Part Number Part Name Reservoir Accumulator Nitrogen Relief Valve...
  • Page 22 Section 2: Installation Installation, Operation and Maintenance Manual December 2024 VCIOM-15345-EN Rev. 4 2.8.3 Pre-charge Verification Check the nitrogen pre-charge in the accumulator periodically to ensure the accumulator is at full potential. Follow the steps below and record final readings for reference.
  • Page 23 Installation, Operation and Maintenance Manual Section 2: Installation VCIOM-15345-EN Rev. 4 December 2024 2.8.5 Nitrogen Pre-charge Maintenance Record Serial Number: Tag Number: Initial GA Chart Final Nitrogen Date Signed Pre-charge Requirement Pre-charge Leak Test Installation...

  • Page 24: Section 3: Electrical Connections

    Section 3: Electrical Connections Installation, Operation and Maintenance Manual December 2024 VCIOM-15345-EN Rev. 4 Section 3: Electrical Connections Remove Separate Terminal Chamber (STC) Cover WARNING Always verify electrical power is disconnected before removing the STC cover. 3.1.1 Remove cover with a strap wrench, drift, or pinch bar by rotating the cover counterclockwise.

  • Page 25: Sealing Cable/Conduit Entries

    All unused conduit entries must be sealed with threaded metal plugs. Recommended Terminal Connections The Biffi Electro-Hydraulic actuator terminal block connectors are wire binding screw connectors with rising captive plates. Connections can be made one of three ways: •...

  • Page 26: Separate Terminal Chamber (Stc) Connections

    Section 3: Electrical Connections Installation, Operation and Maintenance Manual December 2024 VCIOM-15345-EN Rev. 4 Separate Terminal Chamber (STC) Connections 3.4.1 Connect the main power supply cables, including an Earth/Ground (refer to the job specific Wiring Diagram). 3.4.2 Use the barrier strip clamp screws to connect the control wiring (refer to the job specific Wiring Diagram).

  • Page 27: Discrete Controlled Inputs Connection

    Installation, Operation and Maintenance Manual Section 3: Electrical Connections VCIOM-15345-EN Rev. 4 December 2024 Discrete Controlled Inputs Connection The actuator can be controlled by discrete inputs: two-wire control, three-wire control and four-wire valve control. Connections for these discrete inputs may be found on the job specific wiring diagram.

  • Page 28: Section 4: Start-Up Procedure

    Numbers in ( ) correspond to components labeled on the schematic diagram. Information in (( )) is descriptive. When the Biffi EHO is delivered to the job site, it has been both pressure and function tested. The oil reservoir was filled to operation level when it shipped from factory.

  • Page 29: Initial Check Of The Unit

    Installation, Operation and Maintenance Manual Section 4: Start-up Procedure VCIOM-15345-EN Rev. 4 December 2024 Initial Check of the Unit 4.2.1 Check to ensure all hydraulic tube fittings are tight. Vibration during shipment may have loosened connections. 4.2.2 Visually inspect the unit to make sure tubing, hand valves, gauges and other equipment have not been damaged.

  • Page 30: Hydraulic Test

    Section 4: Start-up Procedure Installation, Operation and Maintenance Manual December 2024 VCIOM-15345-EN Rev. 4 4.4.3 Use the handle supplied with the pump to raise the pump clevis. This will draw hydraulic fluid from the reservoir (4) into the hand pump. 4.4.4 Pull the pump handle down to discharge the hydraulic fluid into the cylinder of the actuator (1).

  • Page 31: Check Rotation

    4.6.6 If needed, correct motor rotation. NOTICE If the Biffi EHO actuator is supplied with optional ESD, before operating a motor-powered stroke, a customer supplied ESD signal must be present and solenoid valve (17) energized. Start-up Procedure...

  • Page 32: Self-Calibration

    OFF. Self-Calibration NOTICE Self-calibration must be performed once the Biffi EHO is mounted to the valve or if the stop bolts have been adjusted on the actuator. Self-calibration establishes the position range of the Biffi EHO. The EHO has the ability to automatically find its precise full open and full close set points after adjustments to the mechanical stops is completed.

  • Page 33: Limit Switch Adjustment (Optional)

    After the activity, remember to refill the product. If limit switches are supplied with the Biffi EHO, the limit switches will be factory set. The purpose of the limit switches are for position feedback and further adjustment of the limit switches are typically not required.
  • Page 34 Figure 14. View of Limit Switch Targets ILLUSTRATION SHOWS 4 LIMIT SWITCHES. THE BIFFI EHO HAS OPTIONS FOR 2 OR 4 LIMIT SWITCHES. LIMIT SWITCH #1 TARGET LIMIT SWITCH #2 TARGET LIMIT SWITCH #4 TARGET LIMIT SWITCH #3 TARGET NOTICE The switch targets will be labeled to identify the switch they operate.
  • Page 35 Installation, Operation and Maintenance Manual Section 4: Start-up Procedure VCIOM-15345-EN Rev. 4 December 2024 4.8.3.4 Push down on the target for CLOSE LS-2 and move clockwise until it is off of the switch in the clockwise direction. Refer to the wiring diagram for terminal connections for limit switch confirmation and continuity check.

  • Page 36: Function Test With Local Controls

    December 2024 VCIOM-15345-EN Rev. 4 Function Test with Local Controls NOTICE If the Biffi EHO actuator is supplied with optional ESD before operating a motor powered stroke, a customer supplied ESD signal must be present and solenoid valve (17) energized. 4.9.1 Ensure the hand pump isolation valve (8) is open and check to see manual bypass valve (lockable) is closed.

  • Page 37: Other Options

    OPEN/CLOSE selector switch to CLOSE and OPEN positions to ensure control returned to the LOCAL control mode. 4.9.15 The functional test of the electro-hydraulic actuator is now complete. The Biffi EHO actuator is now operational and ready for service. 4.10 Other Options Other options such as solar panels and battery packs may have been supplied with this order.

  • Page 38: Section 5: Communication Protocols

    Section 5: Communication Protocols Installation, Operation and Maintenance Manual December 2024 VCIOM-15345-EN Rev. 4 Section 5: Communication Protocols Digital control networks can interface with several different network protocols through the use of a Communication Adaptor Module (CAM), and currently, Modbus ®...
  • Page 39 Installation, Operation and Maintenance Manual Section 5: Communication Protocols VCIOM-15345-EN Rev. 4 December 2024 5.1.2 Multi-drop Bus Topology — Only one data path to each device from network master — No short-circuit or ground fault protection in network — Open-circuit protection only to the first cable fault —...

  • Page 40: Hart

    VCIOM-15345-EN Rev. 4 HART The EHO actuators are capable of offering HART7 communication protocol over the widely used 4 to 20 mA analog channels. The HART CAM interface board certified by the FieldComm group (previously HART Communication Foundation or HCF) is...

  • Page 41: Foundation Fieldbus

    VCIOM-15345-EN Rev. 4 December 2024 FOUNDATION Fieldbus EHO actuators supporting FOUNDATION Fieldbus H1 protocol are fully certified by the FieldComm Group and provide direct connection to the fieldbus with guaranteed interoperability with other certified devices. Each network can comprise up to 32 devices, with power for devices being provided via network cabling (assuming intrinsically safe devices are not connected to the same network).

  • Page 42: Section 6: Operation

    Section 6: Operation After initial start-up and commissioning procedures have been accomplished, the Biffi EHO actuator provides a simple self-contained means of operation for a quarter-turn valve. In case of a power failure, the actuator can be operated by the use of the supplied hand pump.
  • Page 43 Installation, Operation and Maintenance Manual Section 6: Operation VCIOM-15345-EN Rev. 4 December 2024 — (8) Hand pump isolation valve: The hand pump isolation valve is used to isolate the solenoid valves when using hand pump to OPEN/CLOSE the actuator. — (9) Check valve.
  • Page 44 MANIFOLD CLOSE ALL RESERVOIR LINES GO TO COMMON RESERVOIR NOTES: FUNCTIONS: 1. BIFFI ACTUATOR (SHOWN IN OPEN POSITION) OPEN FEATURE: 2. ELECTRIC MOTOR A. ENERGIZE SOLENOID (17). 3. HYDRAULIC PUMP B. POWER ELECTRIC MOTOR (2), ACTUATOR STROKES OPEN 4. OIL RESERVOIR SLOW CLOSE FEATURE: 5.

  • Page 45: Functional Description

    (7), through normally open ESD 2-way valve (17) and return to the reservoir (4). 6.4.4 Electric Fail-Safe ((Optional)) The Biffi EHO control can be configured to stroke the actuator to fail-safe position upon loss of electrical power. Operation...
  • Page 46 Section 6: Operation Installation, Operation and Maintenance Manual December 2024 VCIOM-15345-EN Rev. 4 6.4.5 Power Stroke of Accumulator Based Actuator (OPEN/CLOSE/Modulation) (Optional) During a normal power cycle, the motor drives the hydraulic pump. Hydraulic fluid from the pump is forced into the accumulator and pressurizes the accumulator. hydraulic power cylinder moves the actuator to the OPEN/CLOSE position which compresses the spring in the spring-return module.

  • Page 47: Actuator Operation Channels

    Installation, Operation and Maintenance Manual Section 6: Operation VCIOM-15345-EN Rev. 4 December 2024 Actuator Operation Channels 6.5.1 Two-Wire Control with Maintained Contact to Open or Close Two-wire control mode uses only one contact to control the actuator with that contact often being controlled by a relay. Actuator can be configured to OPEN valve either when contact is closed (digital signal high) or when the contact is open (digital signal low).

  • Page 48: Section 7: Local Display Module (Ldm)

    Section 7: Local Display Module Installation, Operation and Maintenance Manual December 2024 VCIOM-15345-EN Rev. 4 Section 7: Local Display Module (LDM) The Local Display Module consists of the following as shown in Figure 20: • Three LED Indicator Lights: OPEN, ALARM, and CLOSE •...

  • Page 49: Positions And Functions Of Selector Knob

    Installation, Operation and Maintenance Manual Section 7: Local Display Module VCIOM-15345-EN Rev. 4 December 2024 Positions and Functions of Selector Knob Table 9. Selector Knob Selector Knob Rotate Control Mode Function OFF (Stop) Return position Stop movement: Prevents motor operation REMOTE (Auto) Clockwise Remote control: Allows control from remote location...

  • Page 50: Section 8: Customizing Biffi Eho Settings

    Section 8: Customizing Biffi EHO Settings Installation, Operation and Maintenance Manual December 2024 VCIOM-15345-EN Rev. 4 Section 8: Customizing Biffi EHO Settings The SETUP mode must be entered to modify any configuration settings. Entering the Setup Menu 8.1.1 Place the LOCAL/OFF/REMOTE selector switch to the OFF position.
  • Page 51 Installation, Operation and Maintenance Manual Section 8: Customizing Biffi EHO Settings VCIOM-15345-EN Rev. 4 December 2024 8.1.2 While the LOCAL/REMOTE selector knob is in OFF, toggle the UP/DOWN selector knob to UP (OPEN) to display the yellow selection box on the display.

  • Page 52: Change Settings

    Installation, Operation and Maintenance Manual December 2024 VCIOM-15345-EN Rev. 4 Change Settings Once the setup menu has been entered, the Biffi EHO configurations can begin to be changed. 8.2.1 Generally, to navigate through the Biffi EHO settings, use the UP/DOWN selector knob to move through the menu.
  • Page 53 Installation, Operation and Maintenance Manual Section 8: Customizing Biffi EHO Settings VCIOM-15345-EN Rev. 4 December 2024 8.2.3.1 Once the last digit is at the correct value, enter the passcode then toggle the NEXT using the BACK/NEXT selector switch. If the password is correct, the setting will be entered allowing it to be changed.

  • Page 54: Menu Tree

    Section 8: Customizing Biffi EHO Settings Installation, Operation and Maintenance Manual December 2024 VCIOM-15345-EN Rev. 4 Menu Tree Settings Device specification 1.1.1 Serial number 1.1.2 Model code 1.1.3 Device tag 1.1.4 Manufacture date 1.1.5 Firmware revision 1.1.5.1 CPU1 firmware revision 1.1.5.2 CPU1 firmware date...
  • Page 55 Installation, Operation and Maintenance Manual Section 8: Customizing Biffi EHO Settings VCIOM-15345-EN Rev. 4 December 2024 Features enable/disable 1.5.1 Partial stroke test 1.5.2 Hardwire ESD 1.5.2.1 Hardwire ESD 1.5.2.2 Hardwire ESD feedback 1.5.3 Host ESD 1.5.4 Setpoint tracking 1.5.5 Logjam 1.5.6...
  • Page 56 Section 8: Customizing Biffi EHO Settings Installation, Operation and Maintenance Manual December 2024 VCIOM-15345-EN Rev. 4 Discrete input 2.3.1 Discrete input1 2.3.1.1 DI1 setting 2.3.1.2 DI1 function 2.3.2 Discrete input2 2.3.2.1 DI2 setting 2.3.2.2 DI2 function 2.3.3 Discrete input3 2.3.3.1 DI3 setting 2.3.3.2 DI3 function...
  • Page 57 Installation, Operation and Maintenance Manual Section 8: Customizing Biffi EHO Settings VCIOM-15345-EN Rev. 4 December 2024 Analog input 2.6.1 Setpoint for lost AI 2.6.2 Analog input polarity Analog output 2.7.1 Analog output 1 source 2.7.2 Analog output 2 source 2.7.3...

  • Page 58: Eho Configuration Menu

    Section 8: Customizing Biffi EHO Settings Installation, Operation and Maintenance Manual December 2024 VCIOM-15345-EN Rev. 4 EHO Configuration Menu NOTICE Feedback Only Factory Set parameters cannot be changed. If an attempt is made to change a Feedback Only Factory Set parameter, all LEDs on the LDM will blink for 2 seconds and the parameter’s value will remain unchanged.
  • Page 59 Motor MFG number for reference only. 1.4. Device settings Pressure unit 1.4.1. SETTING psi, bar, kPa Set the pressure unit for the Biffi EHO. Temperature unit 1.4.2. Temperature unit for the temperature displayed on SETTING Fahrenheit, Celsius Celsius the LDM.
  • Page 60 5% before the actuator reattempts stroking the actuator in the valve stall direction. Coarse SOV 1.5.6. Biffi EHO - May have an optional coarse SOV. It will be SETTING Enable/Disable Disable enabled/disabled during factory configuration.
  • Page 61 Set the Thermal Accumulator Pressure value. 2.2. Alarm configuration Valve stall delay 2.2.1. Set the Biffi EHO’s time duration (in seconds) to move the valve SETTING 5 to 30 seconds 20 seconds position 1% before a valve stall alarm is initiated. Hydraulic fault delay 2.2.2.
  • Page 62 Disable Fully Open, once Hardwired ESD power is restored. Fully Close ESD override motor 2.2.5.5. Configure the Biffi EHO to allow the host to override a SETTING Enable/Disable Enable Motor Thermal Alarm with a software ESD command. 2.2.6. Analog alarm...
  • Page 63 Stop, Remote, Valve Drift, Valve Stall, Overpressure, Power Monitor, Phase Monitor, Relay 1 function Motor Thermal, 2.4.1.1. Set Biffi EHO’s configurable relays to provide various SETTING Hardwire ESD, actuator status indication. Host ESD, Emergency Stop, ESD Active, Lost Analog, Hardwire...
  • Page 64 Stop, Remote, Valve Drift, Valve Stall, Overpressure, Power Monitor, Phase Monitor, Relay 2 function Motor Thermal, 2.4.2.1. Set Biffi EHO’s configurable relays to provide various actuator SETTING Hardwire ESD, status indication. Host ESD, Emergency Stop, ESD Active, Lost Analog, Hardwire...
  • Page 65 Stop, Remote, PST Fail, Valve Drift, Valve Stall, Overpressure, Relay 4 function Power Monitor, Set Biffi EHO’s configurable relays to provide various actuator Phase Monitor, status indication. Motor Thermal, 2.4.4.1. Note: Partial Stroke Test (20) FAIL indication will be available...
  • Page 66 Change color of LEDs used to indicate actuator status SETTING Close Red Close Green (Open/Close/Opening/Closing). Limit switch A Set the Biffi EHO’s limit switch range in %. The limit switch 0 to 100% 2.5.2. will be triggered on between 0% and the limit switch trigger SETTING 25% Open (Open) setpoint.
  • Page 67 Start self-calibration 3.1.1. COMMAND Initiate the Biffi EHO to start the self-calibration procedure. Cycle count Set the number of full cycles for the Biffi EHO to cycle 3.1.2. SETTING 2 to 3 during self-calibration. One cycle is defined as one open and one close stroke.
  • Page 68 Configure the percent range the Biffi EHO will stroke the SETTING 30% (Close) valve during the partial stroke test. PST pause time Configure the time the Biffi EHO will pause at the position at 1 to 4.2.4. SETTING 5 seconds...

  • Page 69: Alarms

    Stay Put by default. Valve Stall Alarm Alarm will activate when Biffi EHO fails to move upon command. If log jam is Stay Put enabled, the Biffi EHO will initiate log jam sequence. If log jam sequence is unsuccessful in moving the valve, the Valve Stall Alarm will activate.
  • Page 70 Menu Name Default Action Valve Drift Alarm Alarm will activate when the Biffi EHO detects the valve has moved more than the bandwidth setting configured in Position Control Bandwidth [Pb]. Go To Set Position The Biffi EHO will attempt to re-position the valve to the original desired set position.

  • Page 71: Section 9: Troubleshooting

    3. Ensure the closing and ESD speed control valves are open. Should any issue be experienced besides the symptoms noted above, please consult factory. Important check points for automatic operation of the Biffi EHO: Ensure oil level is at the proper level. Ensure bypass valve (19) is closed.

  • Page 72: Section 10: Hazardous Area

    This product is only intended for use in large-scale fixed installations excluded from the scope of Directive 2011/65/EU on the restriction of the use of certain hazardous substances in electrical and electronic equipment (RoHS 2). — SIL II or SIL III Certifications (depending on Biffi EHO configuration). Hazardous Area...

  • Page 73: Section 11: General Wiring Diagram

    Installation, Operation and Maintenance Manual Section 11: General Wiring Diagram VCIOM-15345-EN Rev. 4 December 2024 Section 11: General Wiring Diagram 11.1 Sample Wiring Diagram Figure 26. Wiring Diagram Motor MOTOR 460 V AC/60 Hz/3-Phase Control Module Thermal Power Protector 24 V DC DI1 (OPEN) Power Supply DI2 (CLOSE)
  • Page 74 Section 11: General Wiring Diagram Installation, Operation and Maintenance Manual December 2024 VCIOM-15345-EN Rev. 4 Table 26. Terminal Assignment Based on Network Interface Type Network Interface Type Terminal Number Signal Description Channel A + Shield Channel A - MODBUS Shield Channel B + Channel B - Output +...

  • Page 75: Applicable Operating Diagram

    Installation, Operation and Maintenance Manual Section 11: General Wiring Diagram VCIOM-15345-EN Rev. 4 December 2024 11.2 Applicable Operating Diagram This section contains the preliminary list of schematics that are representing the principle of functioning. Figure 27. General Arrangement Hydraulic Schematic Drawing (SHARB001) General Wiring Diagram...
  • Page 76 Section 11: General Wiring Diagram Installation, Operation and Maintenance Manual December 2024 VCIOM-15345-EN Rev. 4 Figure 28. General Arrangement Hydraulic Schematic Drawing (SHARB002) General Wiring Diagram...
  • Page 77 Installation, Operation and Maintenance Manual Section 11: General Wiring Diagram VCIOM-15345-EN Rev. 4 December 2024 Figure 29. General Arrangement Hydraulic Schematic Drawing (SHARB003) General Wiring Diagram...
  • Page 78 Section 11: General Wiring Diagram Installation, Operation and Maintenance Manual December 2024 VCIOM-15345-EN Rev. 4 Figure 30. General Arrangement Hydraulic Schematic Drawing (SHARB004) General Wiring Diagram...
  • Page 79 Installation, Operation and Maintenance Manual Section 11: General Wiring Diagram VCIOM-15345-EN Rev. 4 December 2024 Figure 31. General Arrangement Hydraulic Schematic Drawing (SHARB005) General Wiring Diagram...
  • Page 80 Section 11: General Wiring Diagram Installation, Operation and Maintenance Manual December 2024 VCIOM-15345-EN Rev. 4 Figure 32. General Arrangement Hydraulic Schematic Drawing (SHARB006) General Wiring Diagram...
  • Page 81 Installation, Operation and Maintenance Manual Section 11: General Wiring Diagram VCIOM-15345-EN Rev. 4 December 2024 Figure 33. General Arrangement Hydraulic Schematic Drawing (SHARB007) General Wiring Diagram...
  • Page 82 Section 11: General Wiring Diagram Installation, Operation and Maintenance Manual December 2024 VCIOM-15345-EN Rev. 4 Figure 34. General Arrangement Hydraulic Schematic Drawing (SHARB008) General Wiring Diagram...
  • Page 83 Installation, Operation and Maintenance Manual Section 11: General Wiring Diagram VCIOM-15345-EN Rev. 4 December 2024 Figure 35. General Arrangement Hydraulic Schematic Drawing (SHARB009) General Wiring Diagram...
  • Page 84 Section 11: General Wiring Diagram Installation, Operation and Maintenance Manual December 2024 VCIOM-15345-EN Rev. 4 Figure 36. General Arrangement Hydraulic Schematic Drawing (SHARB010) General Wiring Diagram...
  • Page 85 Installation, Operation and Maintenance Manual Section 11: General Wiring Diagram VCIOM-15345-EN Rev. 4 December 2024 Figure 37. General Arrangement Hydraulic Schematic Drawing (SHARB011) General Wiring Diagram...
  • Page 86 Section 11: General Wiring Diagram Installation, Operation and Maintenance Manual December 2024 VCIOM-15345-EN Rev. 4 Figure 38. General Arrangement Hydraulic Schematic Drawing (SHARB012) General Wiring Diagram...

  • Page 87: Section 12: Maintenance

    Care should be taken to plug all open ports on the actuator and all controls to keep out foreign contaminates. Refer also to the standard manual of the relevant Biffi actuator, RPH or OLGA-H Series. 12.2 Service Interval Routine maintenance is generally unnecessary.

  • Page 88: Lubrication Requirements

    If the service is not special (i.e., oxygen, hydrogen or other mentioned during the offer stage). Use an equivalent or better product in compliance with the grease proposed in the actual scope of supply by Biffi. Your grease supplier can verify and propose an alternative product at your responsibility Maintenance...
  • Page 89 Specific weight (at 15 °C) 0.857 kg/l Use an equivalent or better product in compliance with the oil proposed in the actual scope of supply by Biffi. Your Equivalent oils: oil supplier can verify and propose an alternative product at your responsibility.

  • Page 90: Recommended Annual Inspection

    Installation, Operation and Maintenance Manual December 2024 VCIOM-15345-EN Rev. 4 12.4 Recommended Annual Inspection It is recommended the following components and features of the Biffi™ EHO to be evaluated at least once a year. • Check hydraulic fluid levels •...
  • Page 91 Installation, Operation and Maintenance Manual Notes VCIOM-15345-EN Rev. 4 December 2024 This page is intentionally left blank.
  • Page 92 VCIOM-15345-EN (CP-13937) © 2020, 2024 Biffi. All rights reserved. Biffi Italia s.r.l. Strada Biffi 165 The contents of this publication are presented for informational purposes 29017 Fiorenzuola d’Arda (PC) only, and while every effort has been made to ensure their accuracy,...

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