1 Year Warranty
Description
Product Overview
DS200XDSAG1ACC is a transducer‑interface terminal board within the GE DS200 hardware family for Speedtronic Mark V gas‑ and steam‑turbine control racks. The suffix‑ACC denotes factory‑tested configuration variant of base part DS200XDSAG1A, engineered to interface Honeywell LG‑1237 smart pressure transducers, collecting serial fuel‑pressure measurement data and delivering conditioned signals to the Mark V main processor for combustion‑loop closed‑loop regulation.
Many legacy combined‑cycle and peaking‑plant sites struggle with ageing transducer interface hardware, where cable noise, serial‑bus signal attenuation and connector wear degrade fuel‑pressure measurement accuracy. DS200XDSAG1ACC mitigates these risks with on‑board serial signal conditioning, transducer power supply and channel fault detection. It receives multi‑point fuel‑pressure serial readings from field transmitters, converts them into rack‑internal data format and forwards measurement values across the DS200 backplane bus. Built‑in diagnostic flags report transducer dropout, cable open‑circuit and communication time‑out events, helping maintenance teams locate instrument faults before fuel‑control‑loop instability occurs. This drop‑in variant maintains full mechanical and backplane compatibility with existing Mark V rack layouts for spare‑part replacement and unit overhaul projects.
Technical Specifications
| Parameter name | Parameter value |
|---|---|
| Product model | DS200XDSAG1ACC |
| Manufacturer | GE |
| Product type | Smart Transducer Interface Terminal Board |
| System compatibility | GE Speedtronic Mark V Turbine Control System |
| Backplane interface | DS200 series rack backplane |
| Supported transducer | Honeywell LG‑1237 smart pressure transmitters |
| Transducer supply output | 12 V DC for field transducers |
| Communication | Multi‑drop serial interface for pressure sensors |
| Operating temperature | 0 °C ~ +60 °C |
| Mounting | Plug‑in installation inside Mark V control rack |
| Protection class | IP20 (cabinet‑mounted) |
| Dimensions (H×W×D) | 311 mm × 245 mm × 30 mm |
| Weight | 890 g |
| Certifications | Compliant with power‑generation industry standards |
Key Features and Advantages
smart transducer dedicated interface: DS200XDSAG1ACC provides regulated 12 V DC excitation and serial communication for LG‑1237 fuel‑pressure transmitters. It eliminates external signal‑conditioning hardware, directly feeding calibrated pressure readings to the Mark V combustion‑control algorithm. integrated channel diagnostics: On‑board monitoring detects transducer power loss, serial‑communication time‑outs and wiring open‑circuit faults. Fault status is transmitted to Mark V HMI for remote alarm notification, reducing manual loop‑check work during turbine outages. drop‑in configuration variant: As ‑ACC configuration version of DS200XDSAG1A, it comes pre‑validated with factory jumper settings. No additional hardware modification is needed when swapping into existing racks, lowering commissioning risk during spare‑part change‑out. electromagnetic noise suppression: Circuit design filters high‑frequency interference originating from turbine‑house switching operations, preserving serial‑data integrity over long cable runs between cabinet and fuel‑skid mounted pressure transducers. seamless DS200 ecosystem interoperability: Works together with Mark V CPU boards, analogue I/O and sequence‑output boards. Pressure‑measurement data is shared across backplane bus without additional gateway hardware, maintaining deterministic control‑loop scan times for critical fuel‑regulation logic.
DS200XDSAG1ACC
Application Fields
DS200XDSAG1ACC is deployed inside Mark V turbine‑control cubicles of gas‑turbine power plants, combined‑cycle facilities and industrial captive power stations. Its primary task is acquiring high‑accuracy fuel‑pressure measurements from multiple smart transmitters installed on gas fuel skids, feeding real‑time pressure values into turbine fuel‑control loops for valve‑position regulation.
During turbine start‑up, steady‑state loading and load‑transient conditions, the board ensures fuel‑pressure data consistency for combustion monitoring and trip‑logic evaluation. In steam‑turbine auxiliary control configurations, it can also support serial‑pressure‑instrument acquisition for lube‑oil and hydraulic‑oil circuits.
For power‑plant modernisation projects retaining original Mark V control hardware, DS200XDSAG1ACC serves as a qualified spare‑part replacement for ageing interface hardware. It preserves existing field transducer cabling, avoiding costly field rewiring while restoring measurement‑channel reliability, and helps asset owners extend operational lifespan of legacy turbine‑control installations without full platform migration.
Related Products
- DS200XDSAG1A: Base reference part number; DS200XDSAG1ACC is pre‑configured factory‑tested variant for drop‑in replacement
- DS200TCCAG1A: Mark V turbine‑control core board, main processor consuming pressure‑data from this interface board
- DS200CPUBG1A: Mark V main CPU module, executes fuel‑control logic
- DS200XDSAG1B: Revised hardware revision of transducer‑interface board
- DS200ADG1A: DS200 analog input board, collects conventional 4‑20 mA instrument signals
- LG‑1237: Honeywell smart pressure transducer, primary field‑device paired with DS200XDSAG1ACC
- DS200SLCC1A: Serial communication board, connects Mark V system to plant‑wide SCADA
Installation and Maintenance
pre‑installation preparation: Before inserting DS200XDSAG1ACC into Mark V rack, power off the entire turbine‑control rack and isolate power for connected field transducers. Inspect backplane connectors for bent pins and oxidation. Confirm onboard jumper configuration matches as‑found settings of original board. After physical installation, perform full transducer loop‑test and serial‑communication verification before returning turbine‑control system to operational readiness.
maintenance recommendations: During scheduled unit outages, inspect DB‑25 field‑cable connectors for loosening and corrosion caused by cabinet thermal cycling. Review channel‑diagnostic status within Mark V HMI to spot gradual transducer or cable degradation. Do not hot‑swap DS200XDSAG1ACC under energised rack conditions; live removal will interrupt fuel‑pressure measurement and impact turbine‑control‑loop stability. The board contains no field‑serviceable components; return defective hardware to qualified industrial repair centres.
Product Warranty & Support
Each DS200XDSAG1ACC passes factory channel validation, serial‑communication testing and backplane interoperability verification prior to shipment. Standard manufacturer‑equivalent warranty covers manufacturing defects for 12 months from delivery date. Spare‑part supply, remote technical guidance and outage‑support services are available for spare‑replacement, loop‑check and pre‑commissioning validation. Application specialists offer support for jumper‑setting confirmation and transducer matching. Long‑term spare‑inventory availability mitigates obsolescence risk for legacy Mark V turbine‑control assets across power‑generation sites.
