HONEYWELL SPS5785 51198651-100 | TDI Power Supply Rack Module

🔧 Product Overview

The HONEYWELL SPS5785 is a TDI power supply module identified by part number 51198651-100, Rev F. The assembly is associated with Honeywell process control power-system equipment and is designed to provide regulated power for compatible control-system hardware.

The unit accepts a wide AC input of 100–240 VAC at 47–63 Hz. Available technical data identifies DC outputs including 24–26 VDC at up to 20 A, 54 VDC at 1 A, and a low-voltage 6 V output at 35 mA. The listed assembly also references 51401216-100 and related Honeywell power-system components.

The specific unit referenced here is listed as used. Because power supplies are system-critical components, the exact revision, connectors, mounting arrangement, and associated rack configuration should be checked before installation.

⚙️ Key Features

• Honeywell SPS5785 TDI power supply
• Part number: 51198651-100
• Revision: Rev F
• Associated part number: 51401216-100
• Wide input range: 100–240 VAC
• Input frequency: 47–63 Hz
• Main DC output: 24–26 VDC, up to 20 A
• Additional 54 VDC / 1 A output
• Auxiliary 6 V output, 35 mA
• Designed for industrial process-control power systems
• Approximate listed weight: 25.750 kg
• Used industrial surplus equipment

Honeywell documentation identifies 51198651-100 as a power-supply replacement part and recommends maintaining suitable power-supply spares because of its importance to system availability.

 

📋 Product Datasheet

Parameter	Specification
Brand	Honeywell
Model	SPS5785
Main Part Number	51198651-100
Revision	Rev F
Associated Part Number	51401216-100
Product Type	TDI Power Supply Module
Input Voltage	100–240 VAC
Input Frequency	47–63 Hz
Input Current	10 A
Main Output	24–26 VDC
Main Output Current	Up to 20 A
Additional Output	54 VDC / 1 A
Auxiliary Output	6 V / 35 mA
Maximum Ambient Temperature	55°C
Country of Origin	China, as listed
Weight	Approx. 25.750 kg
Condition	Used

The detailed assembly information associated with SPS5785 also references a power-system cage, backplane assembly, and related PSU components. The exact rack configuration should therefore be verified from the equipment nameplate and existing cabinet documentation.

 

⚡ Operating Function

The SPS5785 converts incoming AC power into the regulated DC voltages required by compatible Honeywell control-system equipment.

The primary 24–26 VDC output is intended for higher-current system loads, while the additional 54 VDC and low-level 6 V supply outputs support other circuits within the associated power architecture.

In practical operation, the power supply should be monitored for abnormal output voltage, excessive temperature, fan problems, input instability, or system power alarms. A defective supply can affect multiple control modules at the same time, so replacement should be treated as a system-level maintenance task rather than simply swapping an electronic card.

 

🛠️ Installation & Maintenance

Before installation, compare the replacement unit with the existing module carefully.

1. Confirm 51198651-100 and Rev F on the identification label.
2. Check the associated 51401216-100 assembly number.
3. Verify AC input requirements before energizing the unit.
4. Inspect connectors, terminals, cooling paths, and mounting hardware.
5. Confirm that the rack and backplane configuration match the replacement.
6. Check DC output voltages before reconnecting sensitive control equipment where the system procedure permits.
7. Monitor output stability and temperature after startup.

Do not mix apparently similar power-supply versions without checking the system documentation. Part-number and revision differences can matter in legacy Honeywell cabinets.

 

🔍 Maintenance Tips

Keep ventilation openings clean and make sure the cabinet cooling system is operating correctly.

For critical process-control installations, maintaining a tested spare is worthwhile. Honeywell itself notes that power supplies are critical system components and recommends regular maintenance together with spare availability.

For a used unit, inspection should include the cooling fan, connectors, terminal condition, signs of overheating, electrolytic capacitor condition, and output-voltage stability.

 

❓ Frequently Asked Questions

Q1: What is the SPS5785?
The SPS5785 is a Honeywell TDI power supply module, identified by part number 51198651-100.

Q2: What is the input voltage?
The listed specification is 100–240 VAC with an input frequency of 47–63 Hz.

Q3: What is the main DC output?
The documented output is approximately 24–26 VDC at up to 20 A.

Q4: Does it have other outputs?
Yes. The associated specification identifies a 54 VDC / 1 A output and a 6 V / 35 mA auxiliary output.

Q5: Is this unit new or used?
The referenced listing identifies the unit as used.

Q6: What is 51401216-100?
51401216-100 is an associated power-supply assembly reference appearing with the SPS5785 configuration. It should not automatically be assumed to be interchangeable with every Honeywell power-supply variant.

Q7: Can I install it directly into any Honeywell rack?
No. The rack, backplane, connector arrangement, revision, and system configuration should be verified before installation.

Q8: Why should the revision be checked?
Legacy process-control systems can have hardware revisions with different electrical or mechanical characteristics. Matching the complete part number and revision reduces replacement risk.

 

🔄 Recommended Honeywell Models

For customers maintaining Honeywell process-control systems, the following related parts and product families may also be relevant:

1. Honeywell 51198947-100 Power Supply
2. Honeywell 51401166-100 Power System Backplane
3. Honeywell 51401165-100 Power System Assembly
4. Honeywell 51401216-100 Power Supply Assembly
5. Honeywell 51304069-100 Power System Component
6. Honeywell 51109684-200 ACX643 Power Module
7. Honeywell 51303968-100 CMOS Backup Assembly
8. Honeywell IOCHAS-0002S I/O Chassis
9. Honeywell SPS5785 TDI Power Supply
10. Honeywell HPM Power Supply Modules

 

🏭 Application Summary

The HONEYWELL SPS5785 is intended for demanding industrial process-control environments where stable system power is essential. Its wide-range AC input and multiple DC outputs make it suitable for compatible Honeywell control-system power architectures.

For replacement projects, the safest approach is to match the complete identification: SPS5785, 51198651-100, revision F, and the associated 51401216-100 reference. Electrical ratings, connectors, rack position, and cabinet configuration should all be checked before commissioning.