Honeywell SPS Series Modules

Technical Dossier

Product Details And Specifications

Honeywell SPS Series: Comprehensive Module Range and Technical Overview

The Honeywell SPS (System Power Supply) series is a line of redundant and non-redundant power supply modules engineered for deployment within Honeywell's TDC 3000 and Experion PKS distributed control system (DCS) platforms. These units are installed across critical heavy-industry infrastructure globally, including petrochemical complexes, nuclear power facilities, offshore platforms, and crude oil refineries. The SPS series provides regulated DC power to backplane-mounted I/O, controller, and communication modules, and is designed for continuous-duty operation in Class I, Division 2 hazardous environments. Field-installed units frequently remain in service for 15–25 years, making lifecycle parts availability a primary operational concern for plant maintenance engineers.

The Evolution of SPS Architecture

The SPS series was introduced alongside Honeywell's TDC 3000 platform in the early 1980s as a dedicated backplane power infrastructure. Early-generation units such as the SPS5700 and SPS5702 operated on single-rail DC output with manual redundancy switching. By the mid-1990s, Honeywell introduced auto-failover redundancy logic in the SPS5710 and SPS5720 variants, enabling hot-swap replacement without process interruption. The transition to the Experion PKS platform in the 2000s introduced updated power architectures under the C300 controller ecosystem, but the SPS backplane power modules remained backward-compatible with legacy Universal Control Network (UCN) and Local Control Network (LCN) cabinets. As of 2026, the majority of the SPS series is classified as mature or end-of-life (EOL) by Honeywell, with no direct OEM replacement path for many SKUs. Third-party lifecycle support providers such as DriveKNMS are the primary sourcing channel for these components.

SPS Series Full Catalog & Functionalities (SKU List)

The following SKUs represent the documented SPS series module range. Each unit is classified by primary function within the DCS cabinet architecture:

Power Supply Modules

• SPS5700: Single-output 24VDC backplane power supply, non-redundant, TDC 3000 LCN cabinet
• SPS5702: Dual-output 24VDC/5VDC power supply, early-generation LCN, manual changeover
• SPS5710: Redundant 24VDC power supply module, auto-failover, hot-swap capable, TDC 3000 / Experion LCN
• SPS5711: Redundant power supply with enhanced filtering, low-noise variant for analog I/O cabinets
• SPS5720: High-capacity 24VDC redundant supply, supports expanded I/O backplane configurations
• SPS5721: 24VDC redundant supply with integrated diagnostics output for SCADA monitoring
• SPS5730: 48VDC output power supply, UCN highway interface cabinet power
• SPS5731: 48VDC redundant supply, UCN highway, with current-sharing bus
• SPS5740: 5VDC logic power supply, dedicated to LCN processor and memory modules
• SPS5741: 5VDC redundant logic supply, dual-input AC, for high-availability LCN nodes
• SPS5750: Combined 24VDC/5VDC dual-rail supply, compact form factor, single-slot backplane
• SPS5760: Universal input (100–240VAC) power supply, international installation variant
• SPS5770: Battery-backed UPS power supply module, 30-minute ride-through, LCN cabinet
• SPS5780: Replacement power supply assembly for PM/APM processor module cabinets
• SPS5790: High-efficiency switching supply, Experion PKS C300 cabinet, RoHS-compliant revision

Sourcing Hard-to-Find & Obsolete SPS Series Parts

DriveKNMS maintains a dedicated inventory program for Honeywell SPS series power supply modules, with particular focus on EOL and long-lead-time SKUs. For plant operators running TDC 3000 systems beyond OEM support windows, unplanned power supply failures represent a critical single point of failure. DriveKNMS sources SPS modules through decommissioned plant asset recovery, authorized surplus channels, and tested-good pull programs. All units are catalogued by revision level and firmware compatibility prior to listing. For emergency breakdown requirements, same-day quotation and expedited international shipping are available. Customers are encouraged to submit a full BOM (Bill of Materials) for proactive lifecycle planning and bulk pricing on multi-unit requirements.

Quality Control for the SPS Series Range

Power supply modules in the SPS series present specific test challenges due to their multi-rail DC output architecture and backplane bus interface. DriveKNMS applies the following test protocol to all SPS units prior to dispatch:

• AC input voltage sweep (100VAC–240VAC) to verify regulation across full input range
• DC output load testing at 25%, 50%, 75%, and 100% rated current on each output rail
• Redundancy failover simulation: primary supply disconnected under load, failover timing measured against Honeywell specification (<20ms)
• Backplane connector inspection: pin continuity, contact resistance (<0.5Ω per pin), and mechanical retention force
• Thermal imaging under full load to identify failing capacitor banks or transformer hotspots
• 48-hour burn-in at rated load and 40°C ambient prior to final QC sign-off
• Revision label verification and cross-reference against Honeywell engineering change notice (ECN) database