Product Core Brief
- Model: IS200SHRAH2AED
- Brand: General Electric (GE Vernova)
- Series: Speedtronic Mark VIe / Mark VIeS Safety Turbine Control Platform
- Core Function: HART 7 enabled analog I/O terminal board providing field wiring termination, galvanic isolation, and signal conditioning for smart 4–20mA transmitters; mates with PHRA/YHRA primary I/O packs for boiler, lube, and compressor process signals
- Product Type: Field termination PCB paired with Mark VIe analog I/O processor packs
- Key Specs: 10 analog input channels | 2 isolated analog output channels | 20 configurable signal jumpers | HART 7 multi-drop support
- Condition: New Original (New Surplus), active OEM power generation spare with no published end-of-life timeline
Key Technical Specifications
| Parameter | Defined Value |
|---|---|
| Analog Input Count | 10 universal 4–20mA / 0–10VDC configurable channels |
| Analog Output Count | 2 galvanically isolated 4–20mA control output channels |
| Supported Digital Protocol | HART 7 multi-drop communication for smart transmitter diagnostics |
| On-Board Configuration Hardware | 20 labeled jumpers for input type, loop power, common return, and line termination |
| Backplane Interfaces | Dual D-Sub connectors for PHRA/YHRA I/O pack high-speed IONet bus |
| Field Termination | High-density screw terminal blocks for all analog field wiring |
| Channel Isolation Rating | 1500 VDC galvanic isolation per channel to chassis ground |
| Rack Supply Input | 24 VDC ±10% from Mark VIe I/O rack backplane |
| Typical Power Draw | 5.2 W continuous operating load |
| Standard Operating Temp | -30°C to +65°C; conformal coated variants rated -40°C to +85°C offshore platforms |
| Humidity Tolerance | 5%–95% RH non-condensing cabinet environments |
| Physical Dimensions | 178 mm W × 159 mm H × 80 mm D |
| Unit Weight | 0.90 kg |
| Compliance Standards | UL 61010-1, CE EMC Class A, IEC 61508 SIL 3 safety rated, ATEX Zone 2 compliant |
| Reference System Manual | GEH-6721 Volume II Mark VIe System Hardware Guide |
Product Introduction
This terminal board acts as the physical wiring bridge between Mark VIe analog I/O processor packs and all smart HART transmitters used on gas turbines, steam generators, and process compressors. The bank of configurable jumpers eliminates separate signal conditioning hardware by switching each channel between voltage and current input modes on-site.
The unit’s channel-to-chassis galvanic isolation breaks ground loop interference that creates noisy 4–20mA readings and unreliable HART diagnostic polling. It cannot operate standalone; full functionality requires mating with matching PHRA primary analog I/O packs installed in the Mark VIe rack’s I/O card slots.
Firmware/Software Versions & Upgrade Notes
Minimum compatible Mark VIe configuration software: ToolboxST v08.01. All PHRA I/O packs paired with this terminal board must run matching firmware builds; mismatched firmware versions disable HART multi-drop polling and trigger persistent IONet LINK fault alarms.Downgrades below v08.01 remove automatic HART device tag scanning and jumper fault diagnostic reporting. All firmware flashes target the PHRA processor packs over the rack IONet bus; no programmable firmware resides on the unit itself. Always export analog channel scaling, HART slave mapping, and jumper layout documentation before initiating any controller firmware update. Jumper positions must be re-verified post-flash to restore correct loop power and signal termination settings.
Frequently Asked Questions (FAQ)
- Is hot-swap operation safe while the Mark VIe rack remains energized?The PHRA main I/O processor pack supports hot-swap with rack power active, but technicians must fully power down the I/O chassis to remove or replace the unit. Pulling the terminal board under energized conditions creates voltage transients across analog field wiring that damage sensitive PHRA ADC circuits and disable HART communication permanently.
- Is this terminal board obsolescent, and are direct drop-in hardware upgrades available?This board remains an active OEM spare for Mark VIe and Mark VIeS safety fleets with no scheduled end-of-life date. The only cross-compatible variant is IS200SHRAS2A, which adds extended surge protection for coastal corrosive environments; it requires minor ToolboxST channel reconfiguration and is not a zero-modification plug-and-play swap.
- Will analog scaling, HART device tags, or channel alarm limits erase if the rack loses full power?All 4–20mA scaling values, HART slave addresses, and process trip thresholds store in non-volatile flash memory on the paired PHRA I/O pack. The terminal board contains zero user-programmable logic storage; only physical jumper positions define input mode and loop power, which remain unchanged unless manually repositioned. Full rack power loss does not erase any software-based analog configuration data.
- What warranty terms separate New Surplus inventory from refurbished alternatives?New Surplus terminal boards carry a 12-month functional warranty covering PCB trace continuity, screw terminal torque retention, channel isolation barriers, and D-Sub connector contact integrity. Refurbished units typically offer only 3–6 month limited coverage and carry hidden risks of degraded isolation capacitors, corroded terminal lugs, and worn jumper pins that generate drifting analog readings during turbine load transients.
- Why does New Surplus pricing sit higher than generic used/refurbished marketplace listings?All New Surplus inventory completes standardized QC validation: serial traceability cross-check against OEM production logs, 24-hour thermal soak bench testing with simulated HART multi-drop transmitter traffic across all 10 analog inputs, 500 V megger insulation testing verifying >100 MΩ channel-to-ground isolation, full jumper configuration validation, and anti-static sealed foam packaging. Refurbished lots skip this multi-step validation workflow, introducing unplanned downtime risk for safety-critical boiler and turbine analog control loops.
- Can discrete digital input/output field devices wire directly to the screw terminal blocks?No, every terminal pin is dedicated to analog current/voltage signals and HART communication pairs. Discrete digital trip and valve position signals require separate Mark VIe terminal boards such as IS200TDIS or IS200TREL. Verify with GEH-6721 Volume II before modifying field wiring to avoid permanent channel circuit damage.
- Does the terminal board locally store HART diagnostic logs or long-term process trending data?No, the PCB contains no on-board memory or signal processing hardware. All HART device fault logs, analog amplitude trending records, and channel diagnostic counters are captured and retained exclusively by the Mark VIe rack’s primary system controller CPU. The unit only delivers passive wiring termination and galvanic signal isolation for analog field instrument links.
