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.