Description
Product Introduction (Anti-Template)
The ‘S1’ in this annunciator board tells you it’s not a standard configuration—it’s a specialized variant designed for specific customer requirements or non-standard annunciation schemes. The IS200TRPAS1A is a TRPAS series board, and the ‘S’ likely stands for “Special”—indicating this board was produced for a specific application, customer order, or custom channel configuration. This board handles annunciator relay outputs with visual status LEDs, but in a non-standard layout.
What makes the TRPAS series different from the standard TRPA? The TRPAS boards are typically custom or specialized variants with non-standard channel counts, wiring layouts, or relay configurations. The ‘S1’ indicates a specific special configuration. The ‘A’ revision brings the improved LED brightness and contact material of the standard TRPAH1A, but applied to this specialized variant. If you’re replacing an existing ‘S1A’ board, match the suffix. If you’re substituting a standard TRPA board, verify compatibility—the pinout and channel mapping may differ significantly.
Key Technical Specifications
| Parameter | Value / Detail |
|---|---|
| Manufacturer | General Electric (GE) |
| Part Number | IS200TRPAS1A |
| Series | Mark VIe Speedtronic |
| Function | TRPAS Termination Board (Annunciator Relay Output – Special) |
| Nominal Voltage | 24V DC |
| Output Type | Relay (annunciator duty, specialized) |
| Channel Count | Specialized S1 configuration |
| Visual Indicators | LED status per channel |
| Application | Special/custom annunciation |
| Connector Type | 37-pin D-sub and terminal blocks |
| Mounting | DIN-rail or chassis mount |
| Operating Temp | 0 to 60°C (ambient) |
| Relative Humidity | 5% to 95% (non-condensing) |
| Compatible Rack | Mark VIe IS200 series backplane |
Compatible Replacement Models
✅ Drop-in Replacement: IS200TRPAS1 — The base revision. Identical pinout, mounting, and software interface. The ‘A’ revision has improved LED brightness and contact material. No software changes required.
⚠️ Software Compatible: IS200TRPAH1A — Standard annunciator board. Different channel configuration and pinout—may not be a direct match. Verify compatibility before substituting.
⚠️ Software Compatible: IS200TREGH1A — Standard relay output board without annunciator-specific features. Lacks status LEDs. Requires software reconfiguration. Budget 2-4 hours.
❌ Hardware Incompatible: IS200TPROH1A — Triac output board. Different application and switching characteristics.
Frequently Asked Questions (FAQ)
Q: What does the ‘S1’ designation mean on this TRPAS board?
A: The ‘S1’ indicates a specialized or custom configuration—not a standard density variant. These boards were typically produced for specific customer applications or non-standard channel configurations. The pinout and channel mapping may differ from standard TRPA boards.
Q: How does the TRPAS series differ from the TRPA series?
A: The TRPAS series represents specialized variants. The TRPA series is the standard annunciator relay board line. TRPAS boards may have non-standard channel counts, wiring layouts, or relay configurations specific to certain customers or applications.
Q: Can I replace a TRPAS1A board with a standard TRPAH1A?
A: Not without verification. The ‘S1’ configuration may have different channel assignments or pinouts. Consult GE documentation before substituting. If the pinout matches, you may be able to use a standard board, but verify every channel.
Q: Is the TRPAS1A hot-swappable?
A: We advise against hot-swapping relay boards. Power down the cabinet segment before swapping.
Q: What bench testing should I do before installing a TRPAS1A?
A: Specialized board protocol. First, obtain the correct wiring diagram for this specific variant—the ‘S1’ configuration is not standard. Second, visual inspection. Third, verify continuity between terminal blocks and D-sub pins. Fourth, measure contact resistance. Fifth, apply power and verify each relay actuates and LED lights. Sixth, document the pinout for future reference.
Q: How do I verify I’m getting a genuine TRPAS1A?
A: Check component markings against documentation. Weigh the board—should be about 365 grams. Look for the GE holographic security label.
Q: Where do I find the official wiring diagram for the TRPAS1A?
A: This is the critical question. The ‘S1’ variant may not be covered in standard GE documentation. You’ll need the specific customer documentation or GE’s variant-specific drawings. Contact GE support with the full part number. If unavailable, reverse-engineer the pinout by tracing continuity from each terminal to the D-sub pins and document it for future maintenance.

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