GE IS230STAOH2A STAOH Analog Output Terminal Base For Mark VIe Speedtronic Turbine Control System
- Product Code: IS230STAOH2A
- Availability: In Stock
GE IS230STAOH2A STAOH Analog Output Terminal Base For Mark VIe Speedtronic Turbine Control System
Manufacturer: GE Vernova (GE Speedtronic Turbine Control Division)
Part Number: IS230STAOH2A (STAOH analog output field terminal base, matched logic card IS200STAOH2AAA)
Product Type: DIN rail mounted analog output wiring terminal assembly, field signal interface base for Mark VIe simplex analog output logic card
Matching Platform: GE Mark VIe gas/steam turbine control system, simplex single controller architecture, compatible with all Mark VIe standard I/O racks
Core Function: 12-channel 4–20mA analog output field wiring termination; loop short-circuit PTC self-resetting protection; built-in surge TVS & RC EMI noise filtering; galvanic isolation between rack logic side and field valve actuator loops; spring-clamp tool-free wire terminals; rear multi-pin plug connector to mate with IS200STAOH2AAA rack AO logic card; maximum 900Ω loop load drive capability for smart valve positioners; channel fault current limiting design
1. Product Overview
IS230STAOH2A is the dedicated field terminal base for GE Mark VIe simplex analog output logic card IS200STAOH2AAA, used as the wiring transfer medium between turbine control rack analog output core board and field regulating valve smart positioners, flow dampers, and variable actuators.
It provides 12 independent 4–20mA analog output loop terminals, supporting full-scale 0–20mA control signals (factory default configured to 4–20mA standard for power plant process control). Each channel integrates self-recovery PTC polymer fuses to isolate single-loop short-circuit faults, avoiding full-card power loss and turbine control interruption. Multi-stage TVS surge absorption and differential RC filter circuits eliminate industrial electromagnetic interference and signal drift, preventing valve hunting and unstable process regulation.
2500VAC dielectric isolation separates low-voltage rack logic circuits from field long-distance wiring loops, effectively blocking ground loop offset and protecting the main I/O logic card from lightning surge and field short-circuit damage. Spring-clamp terminal blocks support 0.2–4.0mm² copper cables without screwdrivers, adapting to long-term high-vibration environments in power plant control rooms.
Standard 35mm DIN rail snap-on installation, metal mounting bracket integrated, full IPC-CC-830 conformal coated PCB for anti-moisture and anti-corrosion protection. Cannot operate independently; must pair with IS200STAOH2AAA rack analog output processor card to complete closed-loop fuel, pressure, temperature control signal output for gas/steam turbine units.
This terminal base is a mainstream spare replacement part for thermal power combined-cycle Mark VIe turbine control cabinets, widely used for unit overhaul, analog loop wiring fault replacement and routine system maintenance.
2. Complete Technical Specifications
• Compatible Control System: GE Speedtronic Mark VIe simplex turbine control rack
• Matching Rack Logic Card: IS200STAOH2AAA 12-channel analog output processor card
• Analog Output Channels: 12 isolated 4–20mA current loop channels
• Maximum Loop Load Resistance: 900Ω @ 20mA full scale output
• Channel Protection: Resettable PTC polymer fuses, per-channel current limiting, TVS surge suppression
• Dielectric Isolation Strength: 2500VAC isolation between rack logic side and field loop side
• Terminal Type: Spring-clamp quick wiring terminals, wire gauge 0.2~4.0mm² (24–12AWG)
• Installation Method: Standard 35mm DIN rail mounting, metal integrated mounting bracket
• Logic Power Supply: 24VDC rack control power, ±15% tolerance
• Operating Temperature: -40℃ ~ +70℃ continuous ventilated cabinet operation
• Storage Temperature: -40℃ ~ +85℃; Relative Humidity: 5% ~ 95% RH non-condensing
• Overall Dimension: 120mm(H) × 110mm(W) × 45mm(D), net weight ~0.91kg
• PCB Protection: Full IPC-CC-830 anti-corrosion conformal coating, anti-static industrial circuit board
• Industry Certifications: UL508, CE, IEC61000 industrial EMC anti-interference certification
3. Core Hardware Advantages
1. 12-channel high-density analog output terminal integration, single base completes all turbine regulating valve loop wiring, simplifies cabinet internal cable layout and reduces wiring workload
2. Self-resetting PTC channel protection, single loop short circuit will not shut down all analog control outputs, greatly improves turbine control system fault tolerance and continuous operation capability
3. 2.5kV high-strength electrical isolation design, thoroughly isolates field long-distance wiring surge interference, eliminates signal drift and valve oscillation caused by ground loops
4. Wide 900Ω load driving capacity, compatible with all mainstream smart valve positioners, long-distance field wiring without signal attenuation
5. Tool-free spring-clamp terminals + DIN rail quick snap installation, shortens field wiring and commissioning cycle, stable contact under long-term vibration environment of power plants
4. Typical Application Scenarios
• Combined cycle power plant Mark VIe gas turbine fuel control valve, exhaust bypass damper analog output wiring base
• Thermal power plant steam turbine generator feedwater, steam pressure regulating valve 4–20mA signal terminal assembly
• Offshore oil & gas platform heavy-duty gas turbine process flow control actuator loop terminal board
• Chemical plant industrial compressor anti-surge valve, temperature control damper analog signal wiring terminal base
• Legacy Mark VIe turbine control cabinet upgrade overhaul, daily analog control loop short-circuit fault replacement spare IS230STAOH2A terminal base
GE Vernova © IS230STAOH2A STAOH Analog Output Terminal Base For Mark VIe Speedtronic Turbine Control System