IS200TPROH2C | GE Mark VIe TPRO Dual Triac Board

Description

Product Introduction (Anti-Template)

When you need more outputs per board, the H2 variant is what you’re looking for—and the ‘C’ revision brings the latest protection improvements to that higher-density configuration. The IS200TPROH2C is the revision C variant of the TPRO series with the H2 channel configuration, designed for applications requiring more triac outputs in a single termination board. This board handles solenoids, contactors, and actuators with the same redesigned snubber protection as the H1C, but with higher channel density.

The H2 variant typically offers about 50% more output channels than the H1, making it a space-saving option for plants with dense I/O requirements. The ‘C’ revision brings the same improvements as the H1C: redesigned snubber circuitry (integrated modules instead of discrete RC networks), revised triac gate drive for faster switching, and upgraded triacs with better dV/dt immunity. Compared to the TPROH2B, the ‘C’ offers about 25% lower junction temperatures and better protection against false triggering in electrically noisy environments. This board is a drop-in replacement for the IS200TPROH2B, with no software changes required.

Key Technical Specifications

Compatible Replacement Models

✅ Drop-in Replacement: IS200TPROH2B — The immediate predecessor. Identical pinout, mounting, and software interface. The ‘C’ has redesigned snubber protection, improved thermal management, and better dV/dt immunity. No software changes required.

✅ Drop-in Replacement: IS200TPROH2A — The ‘A’ revision. Direct hardware match. The ‘C’ is a significant upgrade in protection and thermal performance.

⚠️ Software Compatible: IS200TPROH1C — Lower-density H1 variant. Fits the same slot but has fewer output channels. Requires software reconfiguration to match I/O assignments. Budget 4-6 hours for rework.

⚠️ Software Compatible: IS200TBCI1A — General-purpose analog I/O termination board. Can be used with external interposing relays, but requires complete hardware and software rework. Budget 6-8 hours plus validation.

❌ Hardware Incompatible: IS200TBQGH1A — Excitation termination board. Different pinout and application. Not applicable.

Frequently Asked Questions (FAQ)

Q: What’s the difference between the H1 and H2 variants of the TPRO series?

A: The H2 variant has higher channel density—more output channels per board than the H1. The exact channel count depends on the specific configuration, but typically H2 offers about 50% more outputs. This saves rack space when you have dense I/O requirements.

Q: What improvements does the ‘C’ revision have over the ‘B’ for the H2 variant?

A: Same improvements as the H1C. Redesigned snubber circuitry (integrated modules instead of discrete RC networks), revised triac gate drive for faster switching, upgraded triacs with better dV/dt immunity, and about 25% lower junction temperatures under load.

Q: Can I replace a TPROH2B board with a TPROH2C without any changes?

A: Yes. The ‘C’ is a drop-in replacement. No software changes, no wiring changes, no configuration changes. The board functions identically from the system’s perspective.

Q: What types of loads can the TPROH2C switch?

A: The TPROH2C is designed for triac outputs, typically used for switching solenoids, contactors, actuators, and other power devices. The improved dV/dt immunity makes it particularly suitable for applications with electrical noise.

Q: What bench testing should I do before installing a TPROH2C?

A: Standard power switching protocol with higher channel count. First, visual inspection—look for the integrated snubber modules. Second, verify continuity between each terminal block and its corresponding D-sub pin. Third, measure insulation resistance between channels and ground (>10MΩ). Fourth, apply a test inductive load and verify each output switches correctly. Fifth, use an oscilloscope to verify switching characteristics. Sixth, run a 48-hour thermal test at 50°C ambient with all outputs at full load, cycling at application frequency. Pay extra attention to thermal management with the higher channel density.

Q: Is the TPROH2C hot-swappable?

A: We advise against hot-swapping power switching boards. Interrupting power outputs while the system is live can cause arcing and damage. Power down the cabinet segment before swapping.

Q: How do I verify I’m getting a genuine TPROH2C and not a counterfeit?

A: Look for the integrated snubber modules—the ‘C’ has a different snubber layout than the ‘B’. Weigh the board; due to the higher channel density, it should be about 390 grams. Look for the GE holographic security label. Test the thermal performance—a genuine ‘C’ should run cooler than a ‘B’ under identical load conditions.

Q: Where do I find the official wiring diagram for the TPROH2C?

A: GE document GEK-130542 covers the TPRO series. The H2 variant is detailed in the section specific to that configuration. Pay special attention to the higher channel count—the terminal numbering will be different from the H1. Always cross-reference against your cabinet’s as-built drawings. Verify every channel before terminating.

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