Product Details
The Honeywell 51401570-100, also cataloged as the 51400972-100 PWB Keyboard Interface Board, operates as a dedicated hardware component for key-matrix decoding and operator station input processing within TDC 3000 console terminals.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | 51401570-100 |
| Brand | Honeywell |
| Origin | USA |
| Weight | 1.74 lbs (0.79 kg) |
| Dimensions | Standard operator console PWB form factor |
| Operating Temp | 0 to 60 deg C |
| Power Consumption | 5 VDC internal bus supply |
| Part Number | 51401570-100 (Replaces 51400972-100) |
| Layout Compatibility | ABCDE and QWERTY key matrices |
Channel-to-Channel Isolation & Console Signal Integration
The printed wiring board converts physical key closures into deterministic binary scan codes for the main operator station processor. Built-in signal suppression circuits prevent keystroke chatter and electrical noise from interfering with nearby 4-20 mA HART loop diagnostic buses or analog console displays. Optocoupled control pathways isolate key-matrix scan loops from central chassis ground reference planes, protecting signal integrity during continuous operation.
Frequently Asked Questions
Q: Is the 51401570-100 backwards compatible with older 51400972-100 board revisions?
A: Yes, part number 51401570-100 serves as a direct form, fit, and functional replacement for former part number 51400972-100 across both ABCDE and QWERTY operator keyboards.
Q: Can this interface board be hot-swapped while the operator station is fully powered?
A: Hot-swapping is not recommended; power to the operator keyboard housing or node chassis should be isolated before unseating or inserting signal ribbon cables.
Q: How does the board interface handle simultaneous key presses?
A: The onboard scanning logic executes hardware anti-ghosting and debouncing protocols to correctly register individual keystrokes without transmission errors.
Field Installation Guidelines
- Disconnect main power to the operator console enclosure before servicing internal circuit boards.
- Utilize a grounded wrist strap attached to chassis earth ground to prevent electrostatic discharge (ESD) during handling.
- Align the PWB mounting holes with the standoffs inside the keyboard assembly and tighten retaining hardware evenly.
- Carefully seat all multi-pin ribbon cables onto the board connectors, verifying proper pin-1 alignment and clip engagement.
- Restore system power and execute standard operator key-matrix diagnostic tests to verify functional registration across all keys.
Additional Information
- 100% Genuine Parts: All products are original and authentic, ensuring reliable industrial performance.
- 30-Day Refund Guarantee: Return any in-stock item within 30 days in original, unopened packaging for a full refund (excluding shipping and fees).
- 12-Month Warranty: Covers defects in materials or workmanship; excludes misuse, normal wear, or unauthorized modifications.
- Worldwide Shipping: We ship via USPS, UPS, FedEx, and DHL. Delivery times vary by country and may be subject to customs or import fees.
- Support & Contact: Technical and warranty assistance is available anytime. Contact us here: Contact.
- Purchase Guidance: Check product specifications and compatibility carefully before ordering to ensure proper application.
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