The TTU-205 and FLMTS highest failure item is the A1 Input/Output Printed Wiring Board (Part No. 17910013050). To eliminate this problem and increase overall system reliability TestVonics has designed a form, fit, and functional replacement for the current A1 PWB. The new enhanced printed circuit board is designed to safeguard the TTU-205 circuits from short circuits, isolate fault problems, and increase system reliability. The A1 PCB provides enhanced reliability and repairability and features:
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Smart Logic embedded in an FPGA chip |
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Short circuit protection (eliminates 90% of repairs) |
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Internal ground plane to reduce EMI susceptibility |
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Latching Crow-Bar circuit which shuts down solenoid current if it reaches a threshold value. The current remains off until the power is cycled on the TTU-205 |
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Output Safe Operating Area Protection and fault detection LED’s for open or shorted leads |
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Surface mounted components (versus thru-hole) |
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Allegro lamp driver IC’s featuring independent Over-Current Protection and thermal limiting |
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Integral Clamp Diodes and Mosfet transistors with low on resistance |
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Thin parylene conformal coating (versus thick urethane coating |
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