Description
Product Description
The ABB Bailey SPHSS13 is an intelligent hydraulic servo module designed for turbine control applications. It provides the interface between an ABB HR Series controller and a servo valve or I/H converter, allowing manual or automatic positioning of a hydraulic actuator.
The module is commonly associated with DEH (Digital Electro-Hydraulic) turbine control applications. Typical uses include steam-turbine throttle and control valves, gas-turbine fuel valves, inlet guide vanes and nozzle-angle control. LVDT feedback provides actuator-position information to the servo module for closed-loop position control.
SPHSS13 includes an onboard microprocessor, memory and communication circuitry. ABB also documents its use together with an SPTPS13 speed detection module to form a turbine governor system.
Key Features
- ABB Bailey / Symphony Plus SPHSS13 hydraulic servo module
- DEH turbine valve position control
- Interface for servo valve or I/H converter
- AC or DC LVDT position feedback
- Two servo valve coil outputs with output protection
- Supports proportional-only control
- PI control capability in applicable configurations
- Redundant LVDT feedback inputs
- Three optically isolated digital inputs
- Independent optically isolated hard-manual output
- Onboard processor, memory and communication circuitry
- Designed for Harmony Rack / HR Series turbine control applications
Technical Data
| Parameter | Specification |
|---|---|
| Brand | ABB Bailey |
| Model | SPHSS13 |
| Product Name | Hydraulic Servo Module / DEH Servo Card |
| Product Type | Intelligent I/O / Hydraulic Servo Module |
| Application | Turbine valve position control |
| System | ABB Symphony Plus HR Series / Harmony Rack |
| LVDT Inputs | 4 analog inputs total; 2 LVDT secondary inputs |
| LVDT Compatibility | AC or DC LVDT |
| Servo Valve Outputs | 2 analog outputs |
| Servo Mode Output | ±300 mA |
| I/H Mode Output | 4–20 mA or 20–160 mA |
| Digital Inputs | 3 optically isolated, 250 VDC contact inputs |
| Digital Output | 1 optically isolated, 250 VDC open-collector output |
| Supply | +5 VDC, +15 VDC, -15 VDC and +24 VDC from applicable rack/termination arrangement |
| Operating Temperature | 0 to 70°C (32 to 158°F) |
| Dimensions | 35.56 W × 177.80 H × 298.45 D mm |
| Condition / Status | Refer to item-specific listing condition |
Technical specifications are based primarily on ABB’s official SPHSS13 product documentation.
DEH / Turbine Control Integration
The SPHSS13 receives a position demand from the turbine control system and regulates current to the servo valve or I/H converter. The hydraulic actuator then moves the associated turbine valve, while the LVDT provides position feedback to the module.
For turbine control applications, the module can therefore form part of the control loop for:
- Steam turbine throttle valves
- Steam turbine control valves
- Gas turbine fuel valves
- Inlet guide vanes
- Nozzle-angle control
- Other hydraulic actuator positioning applications
ABB’s turbine-control architecture also shows the SPHSS13 working with turbine speed-control modules and a controller/HMI for position demand, status and manual-control functions.
Replacement & Installation Notes
Before replacing an existing SPHSS13, verify the complete system configuration rather than matching the module name alone. In particular, check the LVDT type, servo-valve coil requirements, termination hardware, controller configuration and associated turbine-control modules.
ABB documentation identifies the SPHSS13 with the NTHS03 termination unit and existing NKHS03 cable in the applicable Harmony Rack turbine-control arrangement.
The original wiring and configuration should be documented before removal. After installation, verify LVDT feedback, servo output, manual-control functions and valve-position response according to the plant’s approved commissioning procedure.
FAQ
Q: What is the ABB Bailey SPHSS13?
A: It is an intelligent hydraulic servo module used for valve-position control in ABB turbine-control systems.
Q: Is SPHSS13 a DEH servo card?
A: Yes. It is widely used as the hydraulic servo/position-control module in DEH turbine control applications. ABB officially describes it as a hydraulic servo module for HR Series turbine control.
Q: What type of feedback does SPHSS13 use?
A: It supports AC or DC LVDT position feedback.
Q: What servo output does it provide?
A: ABB specifies two servo-valve analog outputs, with servo mode rated at ±300 mA. I/H mode supports 4–20 mA or 20–160 mA.
Q: What equipment can it control?
A: Typical applications include steam-turbine throttle/control valves, gas-turbine fuel valves, inlet guide vanes and nozzle-angle actuators.
Q: What should be checked before ordering a replacement?
A: Confirm the SPHSS13 model, existing LVDT arrangement, servo-valve requirements, termination hardware, cable configuration and turbine-control system configuration.
Recommended ABB Bailey / Symphony Plus Models
- ABB SPTPS13 Turbine Speed Detection Module
- ABB SPFCS01 Turbine Speed Module
- ABB IMHSS03 Hydraulic Servo Module
- ABB IMHSS05 Hydraulic Servo Module
- ABB NTHS03 Servo Termination Unit
- ABB NKHS03 Servo Cable
- ABB Harmony Rack Controller Modules
- ABB Symphony Plus HR Series Turbine Control Modules
- ABB INFI 90 Harmony I/O Modules
- ABB Bailey Turbine Control I/O Modules
