ABB SPTSA01 Turbine Servo Control Module

Product Description: The SPTSA01 is an ABB Symphony Harmony Rack turbine hydraulic servo control module for INFI 90 / Symphony Plus DCS system. It outputs bipolar current control signals to drive electro-hydraulic servo valves, used for valve position closed-loop regulation of steam turbines, gas turbines and hydro turbines. It receives position setpoint commands from the controller, collects LVDT feedback signals from valve actuators, and implements high-speed servo closed-loop control to regulate turbine inlet valves.

Features:

• Belongs to ABB Symphony Harmony turbine specialty I/O family, compatible with INFI90 and Symphony Plus platform
• Integrates LVDT position feedback acquisition and ±mA servo valve drive output
• High-speed closed-loop calculation, dedicated for turbine governing valve control loop
• Onboard signal isolation, surge suppression and EMC filtering for power plant harsh cabinet environment
• Hot-swappable Eurocard design, installed in Harmony backplane rack
• Built-in module self-diagnosis, fault LED and wiring error detection
• It is the legacy predecessor of newer SPTPS13 servo protection module

Applications:

• Steam turbine governing valve servo control in thermal power plants
• Gas turbine fuel and inlet guide vane position control
• Hydro turbine governor hydraulic actuator control cabinet
• Legacy ABB INFI90 / Symphony turbine control system spare replacement
• Power plant turbine control retrofitting and maintenance projects

FAQ:

Q: What system does SPTSA01 fit?
A: It works on ABB INFI 90 and Symphony (Harmony Rack) DCS, not compatible with 800xA S800 I/O racks.

Q: What is the replacement for SPTSA01?
A: The modern successor is SPTPS13, function compatible but rack firmware and configuration need re-verification.

Q: Is SPTSA01 still in production?
A: This legacy Harmony turbine module is discontinued. Available stock is NOS surplus or fully tested refurbished units.