Honeywell 51198651‑100 (SPS5785) Power Supply Module
Product Introduction
Honeywell 51198651‑100 (SPS5785) is a new‑generation silver‑cased power supply unit for the xPM (PM/APM/HPM) control system. It supplies power for Honeywell DCS hardware platforms including PM, APM, HPM, Remote I/O and PMIO. As an upgraded replacement model, 51198651‑100 supersedes the older black power supply 51109456‑200 and early silver power supplies 51109684‑100/300, 51198947‑100, mitigating failure risks such as over‑voltage and tin‑whisker short circuits. 51198651‑100 supports redundant architecture deployment. Paired with 48V battery backup and CMOS backup battery, it ensures database integrity under grid fluctuation and power‑loss conditions, avoiding production incidents such as device runaway and HMI disconnection. This module features a standard 10‑year design service life and serves as the core component of the xPM system preventive maintenance upgrade kit MC‑ZPSUG2.
Technical Parameters
| Parameter Item | Specification |
|---|---|
| Supported System | Honeywell PM / APM / HPM / Remote I/O / PMIO (xPM series) |
| Part Number | 51198651‑100, alias SPS5785 |
| Input | 85‑264VAC AC input, compatible with 48VDC battery backup power supply |
| Output | 24VDC system power supply, supports redundant load sharing |
| Status Indication | Five‑channel LED indicators: DC OUT, BATTERY, FAN/TEMP, AC IN, CHARGING; with relay alarm dry‑contact output |
| Protection Mechanism | Thermal shutdown, over‑current, over‑voltage protection; conformal coating on metallic components to resist tin‑whisker short‑circuit faults |
| Cooling | Optimized duct convection cooling |
| Environmental Condition | Extended operating temperature range, suitable for harsh industrial cabinet environments |
| Maintenance Cycle | Recommended full replacement every 10 years during shutdown window; online replacement only for emergency faulty unit swap, online replacement of healthy power supply is not advised |
Functional Advantages
- Comprehensive alarm monitoring: five status LEDs plus digital alarm contacts covering AC input, DC output, fan & temperature, battery backup, charging loop and CMOS battery faults. Alarms can be collected by upper‑level systems.
- Conformal coating treatment: conformal coating applied to all metallic parts, reducing short‑circuit risks induced by tin whiskers and improving stability under dusty cabinet conditions.
- Enhanced duct cooling design: optimized airflow path lowers risk of cascading damage to adjacent power modules caused by particle ingestion, suitable for dual redundant power‑supply operation.
- Built‑in thermal shutdown protection: automatic over‑temperature protection prevents hardware burnout and extends module service life.
- 48V backup battery management support: drives 48V battery backup unit to maintain minimum 20‑minute system runtime upon mains failure. Integrated charging circuit performs float‑charge management for battery pack; load test evaluates battery health status.
CMOS memory backup power support: works with AA‑size and C‑size Ni‑Cd CMOS batteries to preserve system configuration database and avoid configuration loss during power outage.
Product Features
- Silver metal enclosure, modular plug‑in structure, fits xPM system power‑supply cabinet slot.
- Supports N+1 redundancy configuration. It is recommended to feed two power supplies from independent AC sources to mitigate single‑feed failure impact.
- Mixing old‑generation and new‑generation power supplies inside one cabinet is discouraged. 51198651‑100 shall be paired with identical model for redundant operation.
- External alarm contact output allows integration with DCS or third‑party alarm systems for unattended monitoring.
Core power component of preventive maintenance upgrade kit MC‑ZPSUG2. The kit integrates power supply, 48V backup battery and CMOS backup battery for convenient bulk maintenance replacement.
Application Fields
Petrochemical DCS control systems, coal‑chemical plant automation, power‑unit control, metallurgical process control, pharmaceutical automatic production lines, paper‑making industrial control. Applied for critical control cabinet power supply and power‑failure protection in all continuous‑process sites deploying Honeywell xPM (PM/APM/HPM) controllers.
Same‑Brand Product Comparison
| Part Number | Housing Color | Main Drawbacks | Replacement Relation |
|---|---|---|---|
| 51109456‑200 | Black | Over‑voltage failure risk, supplied 1988‑1994 | Mandatory upgrade to 51198651‑100 |
| 51109684‑100/300 | Silver | No conformal coating, weak anti‑tin‑whisker capability | Upgrade to 51198651‑100 |
| 51198947‑100 | Silver | Outdated duct & protection design; rising failure rate beyond 10‑year service | Upgrade to 51198651‑100 |
| 51198651‑100 | Silver | No obvious defects, recommended 10‑year replacement cycle | Current mainstream upgraded model in service |
Matching Products
- 51303948‑100, 48V Battery Backup module. Maintains short‑term system runtime upon power loss; 3‑5‑year maintenance cycle.
- 51190422‑100, AA‑size Ni‑Cd CMOS backup battery, memory backup for legacy PM/APM chassis; 2‑year maintenance cycle.
- 51192060‑100, C‑size Ni‑Cd CMOS backup battery, memory backup for HPM chassis, supports up to 50‑hour memory retention; 2‑year maintenance cycle.
- MC‑ZPSUG2, power‑system preventive‑maintenance upgrade kit, complete assembly containing 51198651‑100 power supply, 48V backup battery and CMOS backup battery for full preventive‑maintenance replacement.
Our Supply Advantages
Spot stock of 51198651‑100 modules and full set of matching spare parts for fast delivery to meet plant shutdown‑window retrofits. Complete kit MC‑ZPSUG2 is available for bundled supply to reduce procurement errors. Volume project quotations supported for annual DCS spare‑parts framework procurement of chemical and power plants.
Precautions
- For redundant configuration of 51198651‑100, identical‑model pairing is mandatory. Cross‑generation mixed installation inside one power chassis is forbidden; it may trigger unbalanced load and false alarms.
- Online replacement is permitted only for already‑failed 51198651‑100 units. Removing healthy power modules while system runs draws dust particles, which may be ingested by the other working unit and cause cascading failure.
- Only certified battery assemblies shall be adopted. Non‑qualified replacement batteries may result in overheating, swelling or rupture. AA‑size and C‑size CMOS batteries are not interchangeable; all relevant CMOS batteries should be replaced simultaneously.
- Avoid deep‑discharge status for 48V battery module 51303948‑100; deep discharge leads to sulfation, rising internal resistance and capacity degradation. Every 10 ℃ rise above 20 ℃ ambient temperature shortens battery service life by 20%.
- Battery load test should preferably be executed during system shutdown with no backup power available. If online testing is unavoidable, prepare spare batteries for rapid swap; maximum charging duration can reach 16 hours.
- Continuously monitor all LED indicators and hardware alarm contacts of power modules. Alarms must be handled promptly; power‑system alarm signals shall never be masked.
- When 51198651‑100 reaches 10‑year service life, replace it in planned shutdown window regardless of apparent working status. Shorten replacement cycle for high‑temperature cabinet environments as appropriate.
Follow xPM service manual strictly for module disassembly & installation. Protect CMOS backup‑battery circuit during power‑off operations to prevent accidental configuration‑database loss.
FAQ
Q1: Can 51198651‑100 directly replace old black power supply 51109456‑200?
A1: Yes, it is official designated hardware drop‑in upgrade. For redundant setup, replace both power supplies with 51198651‑100. Mixing new‑old power supplies in one chassis is not recommended.
Q2: Can healthy 51198651‑100 modules be hot‑swapped online?
A2: Official documentation discourages online removal of healthy power supplies. Emergency online swap is allowed only for faulty units. Online disassembly‑assembly introduces dust particles that may damage the other working unit. Perform maintenance preferentially during shutdown windows.
Q3: What is the recommended full‑replacement interval for 51198651‑100?
A3: Under normal ambient conditions, 10‑year replacement cycle per preventive‑maintenance documentation. Shorten cycle for high‑temperature cabinet environments, and inspect status of matched 48V and CMOS batteries simultaneously.
Q4: What fault does extinguished BATTERY LED on 51198651‑100 indicate?
A4: Extinguished BATTERY LED usually points to disconnected 48V backup‑battery switch, defective battery pack or abnormal charging circuit. Inspect 51303948‑100 battery module and wiring, and check status of CHARGING LED meanwhile.
Q5: Does MC‑ZPSUG2 kit contain 51198651‑100 power supply?
A5: Yes. MC‑ZPSUG2 preventive‑maintenance upgrade kit includes 51198651‑100 power supply, 48V backup battery and CMOS backup battery. Purchase the complete kit for full power‑system preventive maintenance instead of ordering individual components separately.
Q6: For HPM chassis CMOS memory backup, shall I choose 51190422‑100 or 51192060‑100?
A6: HPM chassis requires C‑size 51192060‑100 for full 50‑hour memory retention. Legacy PM/APM chassis uses AA‑size 51190422‑100. Battery models cannot be interchanged.
Q7: What requirements apply to two input feeds for redundant 51198651‑100 deployment?
A7: It is strongly advised to feed two power‑supply modules from physically independent AC power circuits, to avoid simultaneous power loss of both units caused by single‑loop failure and maximize redundancy protection effect.
Q8: Is 48V battery‑backup module 51303948‑100 mandatory to pair with 51198651‑100?
A8: Yes. 51303948‑100 cooperates with 51198651‑100 to implement float‑charge management. Annual battery load test is recommended; 3‑year replacement under high‑temperature conditions; standard maintenance cycle 3‑5 years.
Hot‑selling Same‑Brand Models
- 51303948‑100, 48V Battery Backup Module
- 51190422‑100, AA Ni‑Cad CMOS Battery
- 51192060‑100, C Ni‑Cad CMOS Battery
- MC‑ZPSUG2, Power‑System Upgrade & Maintenance Kit
- 51198947‑100, Legacy xPM Power Supply Module
- 51109684‑100, Early‑Generation Silver Power Supply Unit
- 51109456‑200, Obsolete Black Power Supply
- TC‑FXX061, HPM Controller Module
- TC‑PRR021, PM Controller Module
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