Description
GE IS200WETBH1B (and its revision variant IS200WETBH1BAA) Water Electrovalve Terminal Board is a specialized termination module engineered specifically for the General Electric Mark VI and Mark VIe gas and steam turbine control systems. Designed to terminate, distribute, and switch control signals for heavy-duty water injection and electrovalve actuators, this board ensures reliable fluid management across advanced turbine NOx control and auxiliary automation architectures.
Product Specifications (Datasheet)
- Brand: GE (General Electric)
- Model: IS200WETBH1B / IS200WETBH1BAA (Interchangeable hardware revision variants)
- Series: Mark VI / Mark VIe Turbine Control
- Product Name: Water Electrovalve Terminal Board (WETB)
- Place of Origin: United States
- Lifecycle Status: Active / Specialized Industrial Supply
- Dimensions: Standard Mark VIe terminal board enclosure form factor
- Weight: Approx. 2.2 lbs (1.0 kg)
- Country of Origin: USA
- Power Consumption: Passive termination board (powered via paired I/O pack electronics and external valve supply rails)
Operating Guidelines and Usage Methods
Proper integration and handling of the water electrovalve terminal board require strict adherence to fluid instrumentation wiring and industrial electrical safety standards.
- ESD Precautions: Always wear a certified grounded electrostatic discharge (ESD) wrist strap when handling associated electronic I/O packs to protect sensitive internal microcircuits from static damage.
- Terminal Wiring: Ensure all incoming field solenoid, electrovalve, and status feedback wires are securely terminated to the proper screw or clamp blocks, adhering to correct circuit polarity.
- Shield Grounding: Terminate overall cable shields securely to the designated chassis grounding bars to prevent electrical noise and electromagnetic interference (EMI).
Power-On and Power-Off Sequence
Adhering to correct energization protocols prevents signal transients and protects switching circuitry within the Mark VI/VIe architecture.
- Power-On Sequence:
- Confirm that all field valve wiring, power feeds, and backplane connectors are correctly and securely terminated to the IS200WETBH1B/IS200WETBH1BAA board.
- Plug the compatible Mark VIe discrete output I/O pack firmly into the board interface and secure the locking mechanisms.
- Switch on the primary cabinet power distribution feeds and check operator workstation software to confirm normal module communication and valve command response.
- Power-Off Sequence:
- Safely de-energize water injection loops or take the associated control lines offline via the operator workstation software.
- Power down the main electrical and valve supply feeds if complete isolation is required prior to maintenance.
- Allow circuits to de-energize before unseating the plug-in I/O pack from the terminal board.
Product Instructions
The terminal board serves as the permanent mechanical and electrical termination point for water electrovalves and solenoids, routing switching commands and feedback signals between field actuators and the paired I/O pack. Perform routine inspections of terminal screw torques, snubber components, and wiring harnesses during scheduled maintenance windows to prevent loose connections or valve actuation delays.
Frequently Asked Questions (Q&A)
- Q: What system is the IS200WETBH1B board designed for?
- A: It is utilized as a core water electrovalve and solenoid termination module within the GE Mark VI and Mark VIe distributed control architecture.
- Q: Can the plugged I/O pack be replaced without disconnecting field wiring?
- A: Yes, the modular design allows the electronic I/O pack to be removed or replaced without disturbing the field valve wires attached to the terminal board blocks.
- Q: What should I check first if a water electrovalve fails to actuate?
- A: Verify field wiring and terminal tightness, check external valve power supply fuses, and ensure the paired I/O pack is securely seated.
Recommended Alternative Series and Models
- GE Mark VIe IS220PTCCH1A
- GE Mark VIe IS420UCSBH4A
- GE Mark VI IS200VAICH1A
- GE Mark VI IS200TVIBH2B
- GE Mark VI IS200TBCIH1B
- GE Mark V DS200TCQAG1AFC
- GE EX2100 IS200EPSMG1A
- GE Fanuc IC695ALG608
- GE Multilin 469
- GE Multilin 850
