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Phone: +86 16626708626Description
Key Technical Specifications
- Part Number: 51196655-100
- Product Name: Dual Node Power Supply (DNCF PS), ACX633 Rev E
- System: Honeywell TDC 3000 DCS – Dual Node Card File (DNCF)
- Input Voltage: 120 Vac @ 4 A or 240 Vac @ 3 A, 50/60 Hz (auto-ranging or jumper-select per build)
- Input Power: ~165 W rated
- Output Rails (typical for DNCF):
- +5 V: 20 A (logic, node processors)
- +12 V: 3 A (interface, comms)
- −12 V: 1 A (analog/serial bias)
- +27 V: 0.6 A (relay / interface circuits)
- Clock Option: Jumper J102 – INT (internal line-frequency clock) or EXT (external clock for SOE/NIM sync)
- Mounting: 19-inch rack / DNCF chassis (51196727-100 Classic CE, 51196728-100 Z‑Style)
- Cooling: Forced air (rack fans); temperature monitored via TDC diagnostics
- Environmental – Operating Temp: 0 °C to +60 °C (typical control room range)
- Environmental – Storage Temp: −20 °C to +85 °C
- Humidity: 5–95% noncondensing (control room environment)
- Agency Approvals: CE-compliant versions available; UL/CSA per original TDC 3000 certifications
- Dimensions / Weight: DNCF single-width power module; approx. 2 kg (4.4 lb)
Product Introduction
The Honeywell 51196655-100 is the ACX633 Rev E dual-node power supply for Honeywell TDC 3000 Dual Node Card Files (DNCF). It provides the +5, +12, −12, and +27 Vdc rails that power up to two TDC 3000 nodes (NIM, GUS, APM, HPM, etc.) in a single DNCF chassis, and includes the clock jumper (J102) used to select internal line-frequency or external clock for SOE and network time sync.
This exact part is used in legacy TDC 3000 installations where plants need a direct, form-factor-compatible replacement for a failing or aged DNCF power supply. Refurbished units with replaced electrolytic capacitors and full load testing are common in the surplus market and are often more reliable than untouched 20–30-year-old stock.
51196655-100
51196655-100
Troubleshooting Quick Reference
| Symptom | Possible Cause | Relevance to this Part | Quick Check Method | Recommendation |
|---|---|---|---|---|
| Entire DNCF dead, no node LEDs | No AC input, blown fuse, or failed PS module | ✅ High | Measure 120/240 Vac at DNCF AC terminals; check rack fuse/breaker; verify AC present at PS input connector | Restore AC; if input is good but no DC rails, suspect power supply module |
| One node OK, other node dead or flaky | One DC rail weak or overloaded by single node card | ✅ Medium | Measure +5 V, +12 V, −12 V, +27 V at test points or backplane; compare to spec under load | If one rail is low or noisy, replace or swap the 51196655-100; check for shorted node card if rail collapses |
| Nodes boot but report clock errors / SOE issues | J102 clock jumper mis-set (INT vs. EXT) | ✅ Medium-High | Inspect J102 label (INT/EXT); compare with system design (NIM clock master/slave requirements) | Set J102 to match system clock architecture; document change before powering up |
| Intermittent node resets, random comms drops | Aging capacitors, thermal shutdown, or marginal +5 V rail | ✅ High | Monitor +5 V ripple with scope; check for thermal stress signs (discolored PCB, bulging caps) | Prefer refurbished units with new caps; if original unit, plan proactive replacement |
| Rack fans running, PS hot, nodes unstable | Overload, poor ventilation, or failing fan in rack | ❌ Medium | Measure total node current draw vs. PS rating; check rack airflow and fan operation | Reduce load or improve cooling; if PS still overheats with good airflow, replace module |
If you’re stuck, send photos of the DNCF layout, J102 jumper position, and a screenshot of the TDC alarm log. That usually tells us whether it’s the PS, a node card, or a clock/config issue.
Frequently Asked Questions (FAQ)
Q: What systems use the 51196655-100?
A: This is the standard dual-node power supply for Honeywell TDC 3000 Dual Node Card Files (DNCF), used with LCN and UCN nodes such as NIM, GUS, APM, and HPM. It fits the 51196727-100 (Classic CE) and 51196728-100 (Z‑Style) DNCF chassis.
Q: Can I use this in a 5‑slot chassis power supply application?
A: No. The 51196655-100 is specifically for Dual Node Card Files. Five-slot chassis use different power supplies (e.g., 51196653-100, 51198947-100). Mixing these will not work mechanically or electrically. Match the power supply to the chassis type.
Q: Is this module hot-swappable?
A: No. The DNCF power supply is not designed for hot-swap. Removing or inserting it under load can cause node crashes, data corruption, or backplane damage. Always shut down AC to the rack and follow the TDC 3000 shutdown procedure before replacing this module.
Q: Do I need to change the jumper when replacing my old 51196655-100?
A: Yes—mirror the old module’s setting exactly. If your system uses external clock for SOE (NIM clock master/slave), must be set to EXT. Most other nodes run with INT (internal line-frequency clock). Take a photo of the old jumper before removal and replicate it on the replacement.
Q: Why buy refurbished instead of “new old stock”?
A: These units are 20–30 years old; even unused, the electrolytic capacitors degrade with time. Refurbished units with replaced caps and full load testing are often more reliable than untouched NOS. Reputable refurbishers replace aging capacitors and test all rails under load before shipping.
Q: What warranty do you offer on the 51196655-100?
A: Standard warranty is 1 year from shipment against functional failure under normal industrial use. If the module fails within that period and shows no signs of misuse (overvoltage, water damage, burned components), we replace it or refund, your choice.
Q: How do you test these before shipping?
A: Each 51196655-100 is installed in a DNCF test chassis with representative node load. We verify: AC input, all DC rails (+5, +12, −12, +27) under load, ripple, thermal behavior, and basic clock jumper function. A simple test report (pass/fail + photos) is available on request.
