DS200TCQEG1A | GE Mark VI Output Board

Description

Product Introduction (Anti-Template)

The DS200TCQEG1A is a dedicated high-current output board—the board that takes the controller’s ON/OFF signals and drives large solenoids, contactors, and motor starters with solid-state reliability. This board gives you 16 discrete outputs in one VME slot, with a 5A per channel rating and solid-state outputs that never wear out.

The ‘TCQE’ in the part number indicates this is a high-current discrete output board (solid-state, as opposed to relay outputs on the ‘TCQC’ series). The ‘G1’ indicates the 16-channel platform. The ‘A’ revision adds diagnostic LEDs per channel, improves the update rate, and adds better noise filtering. Compared to the TCQBF1B (2A solid-state outputs), the TCQEG1A gives you higher current capacity (5A) with the same solid-state reliability. If you need to drive high-current loads with solid-state reliability, this board is the solution.

Key Technical Specifications

Compatible Replacement Models

Replacement options depend on your current and channel requirements.

✅ Drop-in Replacement: The DS200TCQEG1 (no ‘A’) is a direct electrical drop-in—same pinout, same 16 outputs, same 5A rating. The differences: the base model has no diagnostic LEDs and a slower update rate. If you don’t need diagnostics, the base model is a cheaper option (typically 15-20% less). The ‘A’ is the enhanced version.

⚠️ Software Compatible: The DS200TCQBF1B (16 outputs, 2A) provides solid-state outputs with lower current capacity. Only use if your load is under 2A.

⚠️ Software Compatible: The DS200TCQCG1A (8 relay outputs, 5A) provides relay outputs with higher current capacity but only 8 channels.

❌ Hardware Incompatible: Any analog output board (TCDAG1 series) or discrete input board (TCQAF1 series) uses different backplane pins and is not suitable for outputs.

Frequently Asked Questions (FAQ)

What’s the difference between the TCQEG1A and the TCQBF1B?

The TCQBF1B has 16 solid-state outputs rated at 2A. The TCQEG1A has 16 solid-state outputs rated at 5A—more than double the current capacity. The TCQEG1A uses larger MOSFETs and has better thermal management to handle the higher current. If you need to drive high-current loads (solenoids, contactors, motor starters), the TCQEG1A is the right board.

What’s the difference between solid-state outputs and relay outputs?

Solid-state outputs (TCQEG1A, TCQBF1B) use MOSFETs with no moving parts—they never wear out, switch faster, and are more reliable than relays. Relay outputs (TCQCG1A) use mechanical contacts that wear out over time but can handle higher currents (5A) and provide complete isolation. The TCQEG1A combines solid-state reliability with 5A current capacity.

Can I use this board with a Mark VIe controller?

No—the TCQEG1A uses the older Mark VI backplane pinout. Mark VIe uses a different assignment and typically uses the IS200TCQEG1A for high-current outputs. Use the Mark VIe-specific board for new installations.

How do I test this board before installation?

Testing the TCQEG1A requires checking all 16 outputs:

1. Visual inspection: Check for burnt components. Look for diagnostic LEDs and solid-state output components.
2. Power-up test: Apply power. All diagnostic LEDs should briefly flash during POST.
3. Firmware check: Read firmware via ToolboxST—should be 3.0 or later.
4. Output test: Command output 1 ON—LED should illuminate green. Measure output voltage—should match the applied load voltage. Command OFF—LED turns amber and output voltage should be 0V. Repeat for outputs 1-16.
5. Current test: Connect a 5A load and verify the output can sustain the current without overheating.
6. Update rate test: Verify the board updates at 5ms intervals.
7. Isolation test: Measure resistance between output channels—should be >10MΩ.

What’s the most common failure on this board?

Two issues specific to the high-current solid-state design:

1. Output MOSFET failure. Solid-state outputs can fail if subjected to voltage transients or excessive current. The 5A rating is a guideline—ensure your load doesn’t exceed this. Use external snubbers for inductive loads.
2. Diagnostic LED failure. The LEDs can fail after 10+ years—a failed LED doesn’t affect the output.

If I’m using this board in a SIL-rated safety application, what’s the recommended maintenance interval?

The high-current solid-state outputs make this board suitable for SIL-1 and SIL-2 applications (not SIL-3). We recommend:

• Visual inspection: Every 6 months (check diagnostic LEDs)
• Power-up test: Every 12 months
• Output test: Every 12 months (verify solid-state output operation)
• Isolation check: Every 2 years
• Full calibration: Every 5 years

What’s the lead time for a replacement TCQEG1A?

These boards are moderately available:

• New surplus: 2-4 weeks.
• Refurbished: 1-2 weeks. Ensure the refurbisher tests all 16 channels.
• Used/as-is: Available, but the solid-state outputs are wear items.

Is there a direct Mark VIe equivalent?

Yes—the IS200TCQEG1A (Mark VIe version). The backplane pinout is different.

What termination board should I use with the TCQEG1A?

The TCQEG1A is designed to interface with a termination board that supports high-current discrete outputs. The DS200TBQAG1A (high-current discrete termination) or DS200TBPXG1A (mixed-signal termination) can be used. The termination board provides the terminal connections for the field wiring.

What’s the update rate for this board?

The TCQEG1A updates all 16 channels simultaneously at 5ms intervals—200Hz update rate.

What’s the maximum load for the solid-state outputs?

The solid-state outputs are rated for 5A at 24, 48, or 125 VDC. For inductive loads (solenoids, contactors), use an external snubber circuit to protect the output. The 5A rating is for continuous current—brief surges up to 10A are acceptable, but sustained current above 5A will cause overheating and potential failure. Ensure your load doesn’t exceed 5A continuous.

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FOXBORO P0916FK
FOXBORO P0176SA