Overview
Manuals
Applications
Electrical and Functional
Commissioning Guidance
Features:
- Hydraulic Servo Module
- Product function: Hydraulic servo control
- Feedback input: LVDT position feedback
- Controller functions: ABB function codes 55 and 150
- Typical loads: Servo valve or I/H converter
- Applications: Turbine valves, guide vanes and nozzle mechanisms
ABB IMHSS03 is a hydraulic servo module for ABB Harmony Rack turbine-control applications. It positions a hydraulic actuator by driving a servo valve or current-to-hydraulic converter and processing position feedback.
IMHSS03 supports manual or automatic actuator control under the Harmony controller using the applicable ABB hydraulic-servo function codes. Typical controlled devices include steam-turbine throttle and control valves, gas-turbine fuel valves, inlet guide vanes and nozzle-angle mechanisms.
ABB IMHSS03 uses LVDT position feedback and must be coordinated with the controller configuration, termination hardware, hydraulic actuator and feedback calibration. Confirm supply loading, wiring polarity, travel limits and fail-safe behavior before commissioning.
The IMHSS03 ABB Hydraulic Servo Module may still be available for purchase and support from Moore Automated beyond End-Of-Life (EOL) by the manufacturer (OEM).
ABB IMHSS03 Hydraulic Servo Module Manuals(Datasheets), Link
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.
Field Applications
- Hydraulic Servo Module
- ABB Bailey INFI 90 / Harmony Rack
It provides closed-loop hydraulic actuator positioning for turbine throttle valves, fuel valves, inlet guide vanes and related prime-mover mechanisms.
Use it only in the specified Harmony Rack turbine-control arrangement with the approved controller functions, termination hardware, actuator interface and LVDT feedback.
Electrical and Functional Data
- Product function: Hydraulic servo control
- Feedback input: LVDT position feedback
- Controller functions: ABB function codes 55 and 150
- Typical loads: Servo valve or I/H converter
- Applications: Turbine valves, guide vanes and nozzle mechanisms
- Module space: One module mounting unit slot
- Operating temperature: 0 to 70 °C
- Relative humidity: 5 to 95%, non-condensing to 55 °C
The listed values are taken from the manufacturer documentation for
ABB IMHSS03. Confirm the complete order identity and hardware revision before replacement.
Commissioning Guidance
- Verify the complete order code
- Confirm system and termination compatibility
- Follow manufacturer handling guidance
Verify actuator direction, servo-current polarity, LVDT excitation and feedback, power loading, travel limits and fail-safe action; perform calibration with the official turbine-control procedure.
Use it only in the specified Harmony Rack turbine-control arrangement with the approved controller functions, termination hardware, actuator interface and LVDT feedback.
