IS200VAOCH1B | New Surplus GE VAOC PCB

Description

Product Introduction (Anti-Template)

The jump from ‘A’ to ‘B’ on this versatile analog output board is about driving tougher loads without sacrificing accuracy—better output drive capability, more stable current sourcing, and improved voltage output under load. The IS200VAOCH1B is the revision B variant of the VAOC series, designed for configurable analog output signals—voltage or current—with enhanced drive capability and improved accuracy.

What changed from ‘A’ to ‘B’? The output drive stages were upgraded with higher-current capability and better thermal management—about 25% better drive capability than the ‘A’. The output accuracy was improved with tighter-tolerance reference components. The output protection was enhanced for better survival in harsh plant environments. Compared to the VAOCH1A, the ‘B’ delivers more stable outputs under heavier loads and better overall accuracy. This board is a drop-in replacement for the IS200VAOCH1A, with no software changes required.

Key Technical Specifications

Compatible Replacement Models

✅ Drop-in Replacement: IS200VAOCH1A — The immediate predecessor. Identical pinout, mounting, and software interface. The ‘B’ has enhanced drive capability and improved accuracy. No software changes required.

✅ Drop-in Replacement: IS200VAOCH1 — The base revision. Direct hardware match. The ‘B’ is a significant upgrade in drive capability and accuracy.

⚠️ Software Compatible: IS200TBCI1A — General-purpose analog I/O board. Similar but less versatile. Verify compatibility.

⚠️ Software Compatible: IS200TSVOH1B — Servo output board. Different signal type. Requires software reconfiguration.

❌ Hardware Incompatible: IS200TBQGH1A — Excitation termination board. Different pinout and application.

Frequently Asked Questions (FAQ)

Q: What makes the ‘B’ revision different from the ‘A’?

A: Three improvements. First, the output drive stages were upgraded with higher-current capability—about 25% better drive capability. Second, the output accuracy was improved with tighter-tolerance reference components. Third, the output protection was enhanced for better survival in harsh environments.

Q: Is the VAOCH1B worth upgrading from the A revision?

A: If you’re driving heavier loads (higher current requirements, longer cable runs, or multiple devices), yes. The enhanced drive capability gives you more stable outputs. For standard loads, the ‘A’ is still a good board.

Q: Can I replace a VAOCH1A board with a VAOCH1B without any changes?

A: Yes. The ‘B’ is a drop-in replacement. No software changes, no wiring changes, no configuration changes.

Q: What types of signals can the ‘B’ generate?

A: The ‘B’ can be configured for voltage outputs (0-10V) or current outputs (4-20mA) depending on jumper configuration.

Q: What bench testing should I do before installing a VAOCH1B?

A: Standard analog output protocol with load testing. First, visual inspection—verify jumper settings. Second, verify continuity. Third, apply power and verify output signal ranges. Fourth, test load drive capability with representative loads—should handle heavier loads than the ‘A’. Fifth, run a 24-hour stability test at 50°C ambient.

Q: Is the VAOCH1B hot-swappable?

A: We advise against hot-swapping analog output boards. Power down the cabinet segment before swapping.

Q: How do I verify I’m getting a genuine VAOCH1B?

A: Check component markings against GE documentation. Weigh the board; should be about 358 grams. Look for the GE holographic security label.

Q: Where do I find the official wiring diagram for the VAOCH1B?

A: GE document GEK-130570 covers the VAOC series. The ‘B’ has identical terminal assignments to the ‘A’. Pay special attention to the jumper configuration table. Always cross-reference against your cabinet’s as-built drawings. Verify every channel before terminating.

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