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IMHSS03

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ABB IMHSS03 is a Harmony Rack hydraulic servo controller using LVDT feedback and servo-drive outputs. It regulates turbine valve position through the documented hydraulic-servo function-code application.
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Technical specifications for IMHSS03

  • Manufacturer:
    ABB
  • Part Number:
    IMHSS03
  • Product Family:
    ABB Bailey
  • Product Type:
    hydraulic servo module
  • Stock:
    1
  • Module role:
    Hydraulic servo valve position controller
  • Primary function code:
    55
  • Alternate function code:
    150
  • Servo interface:
    Electrohydraulic servo / I-H interface
  • Application:
    Turbine steam-valve positioning
  • Feedback sensor:
    LVDT
  • Processing:
    On-board processor
  • Memory:
    On-board program and data memory
  • Communication:
    Harmony rack communication interface
  • Mounting requirement:
    One module mounting-unit slot
  • Operating temperature:
    0 to 70°C
  • Humidity:
    Noncondensing per Harmony environmental limits
  • Operating altitude:
    Sea level to 3 km
  • Logic supply:
    +5 VDC rail
  • Analog supply:
    ±15 VDC rails
  • Field supply:
    24 VDC rail
  • Feedback inputs:
    LVDT position feedback
  • Control outputs:
    Servo-valve drive outputs
  • Discrete interface:
    Status and control digital I/O
  • Official evolution replacement:
    SPHSS13
  • Weight:
    1.2346 lbs (0.56 kg)
  • Estimated shipping dimensions:
    3.5 x 31.5 x 17.7 cm
  • Tariff Code:
    8537101190
  • Country of origin:
    Sweden
  • Place of shipment:
    Xiamen,Fujian,China
By purchasing this item, you agree to the Terms & Conditions, ApterPower is not an authorized distributor for listed manufacturers or tradenames and therefore the manufacturer's warranty does not apply. All our products come with ApterPower's 1-year warranty.

More Information

Overview Manuals Specifications System Integration Safety Compliance Environment

Features:

  • Controls hydraulic actuator position through a servo valve or I/H converter.
  • Uses LVDT feedback for actuator position.
  • Supports Function Code 55 or 150.
IMHSS03 is the ABB Harmony Rack hydraulic servo module for valve-position control with LVDT actuator feedback.

It uses Function Code 55 or 150 to drive a servo valve or I/H converter for turbine throttle, fuel, guide-vane and related hydraulic actuators.

Confirm termination hardware, LVDT type, servo wiring and the SPHSS13 replacement engineering requirements before changing the module.

Availability is subject to Apter Power inventory and sourcing confirmation.

Verified resources for ABB IMHSS03:

Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.

ABB IMHSS03 Hydraulic Servo Module Specs

General

  • ManufacturerABB
  • ModelIMHSS03
  • ConditionNew / Surplus / Refurbished
  • Product FamilySymphony Plus / Harmony
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
  • The controller closes the hydraulic valve-position loop using LVDT feedback and current-drive servo outputs.
  • Function Code 55 or 150 must match the configured servo or current-to-hydraulic interface application.
  • Termination, cable, feedback excitation, polarity and mechanical travel must be verified as one engineered assembly.
  • Place the controlled turbine actuator in its approved safe state before disturbing rack or field connections.
  • ABB identifies SPHSS13 as a direct replacement, but function code, LVDT, cable and termination details still require review.
  • Controlled commissioning must verify feedback direction, servo polarity, trips and the complete valve-stroke response.
  • Operate within the Harmony rack temperature and noncondensing humidity limits for the installed cabinet.
  • Servo and LVDT wiring should be shielded and routed away from power circuits that can disturb low-level feedback.
  • Vibration, grounding and terminal integrity require inspection wherever stable valve positioning is critical.
Description
IMHSS03 is the ABB Harmony Rack hydraulic servo module for valve-position control with LVDT actuator feedback.

It uses Function Code 55 or 150 to drive a servo valve or I/H converter for turbine throttle, fuel, guide-vane and related hydraulic actuators.

Confirm termination hardware, LVDT type, servo wiring and the SPHSS13 replacement engineering requirements before changing the module.
Alternative Names
IMHSS03 ABB IMHSS03 IMHSS03 hydraulic servo module Harmony Rack Turbine Control IMHSS03 ABB Harmony Rack Turbine Control IMHSS03 ABB Harmony Rack Turbine Control hydraulic servo module
Technical notes
Before energizing IMHSS03, verify field wiring, power isolation and the validated Harmony Rack Turbine Control configuration.
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FAQS

The following is a list of questions commonly asked by our customers. Please contact us if you have a question about our process that is not answered below.
What servo-control function is performed by IMHSS03?
IMHSS03 closes the hydraulic valve-position loop using LVDT feedback and the documented servo-drive outputs.
How is IMHSS03 matched to a turbine actuator?
Verify function code, servo or I-H interface, LVDT type, polarity, drive current, termination and mechanical travel.
Which turbine applications use IMHSS03?
It positions applicable steam, fuel or hydraulic control valves where the Harmony application requires closed-loop servo control.
How should IMHSS03 availability be handled after an official evolution path is published?
Apter Power checks legacy stock and the engineered evolution option while confirming condition, quantity and lead time.
What makes an IMHSS03 evolution replacement an engineered change?
Controller hardware, termination, cable, function code, tuning, feedback calibration and trip testing must all be reviewed.
Which commissioning records support an IMHSS03 manual and quote inquiry?
Provide the valve and LVDT data, tuning backup, function code, termination photos, quantity and destination.

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