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The SPHSS03 is a high-precision Hydraulic Servo Control Module designed for ABB Symphony Plus and Harmony Rack architectures. This specialized I/O module provides the critical interface between digital control logic and high-force hydraulic...
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The SPHSS03 is a high-precision Hydraulic Servo Control Module designed for ABB Symphony Plus and Harmony Rack architectures. This specialized I/O module provides the critical interface between digital control logic and high-force hydraulic actuators, enabling high-speed, closed-loop position and force control in demanding industrial applications.
Engineered for mission-critical motion control, the SPHSS03 delivers fast response times and stable control by combining localized signal conditioning with microprocessor-based servo regulation. It directly drives hydraulic servo valves while processing high-resolution feedback from LVDT and RVDT position sensors, ensuring precise actuator positioning with excellent repeatability. By integrating hydraulic control directly into the DCS, the SPHSS03 eliminates the need for standalone hydraulic controllers, simplifying system architecture and long-term maintenance.
| Parameter | Specification |
|---|---|
| Model Number | SPHSS03 |
| Product Family | Symphony Plus / Harmony Rack |
| Module Type | Hydraulic Servo Control I/O |
| Control Method | High-speed closed-loop servo control |
| Feedback Inputs | LVDT, RVDT |
| Output Signals | Servo-valve drive (current / voltage, application dependent) |
| Processing Architecture | Microprocessor-based with local signal conditioning |
| Rack Compatibility | Harmony Rack / INFI 90 |
| Mounting | Standard Harmony Rack slot |
| Diagnostics | Front-panel LEDs for module status, loop health, and feedback integrity |
| Environmental Design | Suitable for high-vibration, thermally demanding industrial environments |
The SPHSS03 is used wherever hydraulic power and precise motion control are required:
Power Generation – Steam turbine governor valves, intercept valves, and hydraulic actuators
Heavy Manufacturing – Forging presses, stamping machines, and synchronized hydraulic rams
Process Industries – Hydraulic gates, dampers, and high-force actuators in water treatment and chemical plants
Turbomachinery Control – Integrated valve and position control within a unified DCS environment
Does the SPHSS03 support redundancy?
Yes. Within the Harmony Rack architecture, SPHSS03 modules can be implemented in redundant configurations, ensuring continued control of critical hydraulic actuators in the event of a single module failure.
Is the SPHSS03 compatible with legacy INFI 90 systems?
Yes. The module is designed as part of the Symphony Plus evolution and maintains compatibility with most Harmony and INFI 90 rack infrastructures, enabling straightforward upgrades.
What feedback devices are supported?
The SPHSS03 is optimized for LVDT and RVDT feedback devices, which are standard in high-reliability hydraulic actuator assemblies used in power and heavy industry.
