Emergency Protection Terminal Board – GE Mark VIe

Product Overview

• IS200TPROH1C – GE Emergency Protection (TPRO) terminal board for Mark VIe.
• Houses three PPRO I/O packs for critical turbine protection.
• Includes potential transformers (PTs) for bus and generator voltage input.
• Conditions speed signal inputs for the PPROs.
• Supports simplex and TMR (Triple Modular Redundant) configurations.
• Features DC-37 connectors for backup trip relay terminal boards.

Oiltech Controls’s Insight

• The IS200TPROH1C is vital for gas and steam turbine overspeed protection.
• Its P24 output (ORed from 28V supplies) stays active even if one I/O pack fails.
• The board accepts magnetic speed pickup pulses from 2 Hz to 20 kHz with 0.05% accuracy.
• Thermocouple and 4-20 mA inputs offer flexibility for future control extensions.
• Diagnostic scan at power-on verifies hardware configuration – a key reliability feature.

Key Technical Data

• Part Number: IS200TPROH1C
• Manufacturer: General Electric (GE)
• Product Type: Emergency Protection (TPRO) terminal board
• Series: Mark VIe
• Speed Input Range: 2 Hz to 20,000 Hz (magnetic pickup)
• Pulse Rate Accuracy: 0.05% of reading
• Operating Temp: 30°C to 65°C
• Dimensions: 15.9 cm (H) x 17.8 cm (W)
• Technology: Surface-mount
• Connectors: 3x DC-37, 2x pluggable blocks (24 terminals each)

Functional Highlights

• Speed Inputs: Terminals 31-48 – nine speed inputs available.
• P24 Output: Access at Terminals 5, 9, 11; return via Terminal 8 (MARET).
• 4-20 mA Inputs: Terminals 6, 10, 12 – fanned out to R, S, T PPRO connections.
• Thermocouple Input: Set JPX, JPY, JPZ jumpers to (1,4,7,10).
• 4-20 mA Input: Set JPX, JPY, JPZ jumpers to (3,6,9,12).
• Voltage Warning: Avoid cross-connecting 240V AC and DC – may cause MOV failure.

Compatibility & Installation

• Compatible with: PPRO I/O packs (supports up to 3 packs in TMR).
• Variants: TPROH1CD and H12C accept three PPROH1As.
• Mounting: DIN-rail carrier or panel-mount assembly.
• Wiring: Use #18 AWG wires for speed signals and PT inputs.
• Replacement: Barrier terminal block detachable; TPROH2C uses Euro-Block type.

Diagnostics & Configuration

• Power-on Scan: Checks electronic ID on TPRO and backup trip relay boards.
• Verification: PPRO confirms matching hardware before normal operation.
• Jumper Setting: Thermocouple – JPX/JPY/JPZ at (1,4,7,10).
• Jumper Setting: 4-20 mA – JPX/JPY/JPZ at (3,6,9,12).

Typical Applications & Suitable Equipment

• Suitable for: GE Mark VIe turbine control systems, gas/steam turbine protection, generator protection panels.
• Works with: PPRO I/O packs, backup trip relay boards, speed pickups, and PTs.
• Ideal for: Power generation, oil & gas, and heavy industrial turbine applications.

Package, Warranty & Shipping

• Included: IS200TPROH1C board, insulator, mounting hardware (as per kit).
• Warranty: 12 months against manufacturing defects.
• Shipping: FedEx, UPS, DHL – dispatched within 24-28 hours.

Expert FAQ – Selection & Experience

• Q1: What is the difference between IS200TPROH1C and H2C?
  A: The H1C uses a barrier terminal block that is detachable. The H2C uses a pluggable Euro-Block type for easier replacement.
• Q2: Can I use this board in a simplex system?
  A: Yes. The TPROH1C supports both simplex and TMR configurations. In simplex, you connect one PPRO pack.
• Q3: What happens if I cross-connect 240V AC and DC?
  A: This can exceed the MOV rating and cause failure. Always verify supply grounding before wiring.
• Q4: How do I set jumpers for thermocouple inputs?
  A: Set all JPX, JPY, and JPZ jumpers to position (1, 4, 7, 10). For 4-20 mA, use (3, 6, 9, 12).
• Q5: What should I check before purchasing?
  A: Confirm your system is Mark VIe. Verify your PPRO pack model (PPROH1A). Check if you need simplex or TMR configuration.

Why Buy From Oiltech Controls?

• ✓ 15+ years in industrial automation spare parts – deep expertise
• ✓ Global shipping with full tracking and insurance
• ✓ Tested surplus / refurbished options – fully functional
• ✓ 12-month warranty on every product
• ✓ Technical verification before shipment
• ✓ Support for obsolete control systems – we keep you running