Honeywell 51308112-020 Analog Output Module | Replacement, Equivalent & Selection Guide
The Honeywell 51308112-020 is a high-precision Analog Output (AO) Module designed for the Honeywell TDC 3000 Distributed Control System (DCS). It delivers reliable 4–20 mA analog output signals to field devices such as control valves, positioners, and variable-speed drives in demanding industrial process environments. This page provides full technical specifications, compatible replacement options, and a structured selection guide to help engineers and procurement teams make confident sourcing decisions.
Technical Specifications
- Part Number: 51308112-020
- Manufacturer: Honeywell Process Solutions
- Series / Platform: TDC 3000 / HPM (High-Performance Process Manager)
- Module Type: Analog Output (AO)
- Output Signal: 4–20 mA (current loop)
- Output Channels: 8 channels (isolated)
- Resolution: 12-bit D/A conversion
- Accuracy: ±0.1% of full scale
- Load Impedance: Up to 750 Ω per channel
- Power Supply: 24 VDC (supplied via backplane)
- Communication: Honeywell UCN / LCN backplane bus
- Isolation: Channel-to-channel and channel-to-bus isolation
- Operating Temperature: 0°C to 60°C
- Humidity: 5% to 95% RH (non-condensing)
- Form Factor: Single-slot plug-in card
- Weight: Approx. 1,060 g
- Certifications: CE, UL listed (industrial control equipment)
Compatible Replacement & Equivalent Models
When the original 51308112-020 is unavailable or end-of-life, the following models are commonly evaluated as functional equivalents or drop-in replacements. Always verify firmware revision and backplane compatibility before substitution.
- 51308112-025 — Revised revision of the same series; enhanced EMI shielding. Direct drop-in for most HPM configurations.
- 51304485-100 — Earlier-generation Honeywell AO module; compatible with TDC 3000 LCN bus. Verify channel count requirements.
- 51309276-150 — Extended-range AO module; supports 0–20 mA and HART pass-through. Suitable for HART-enabled field devices.
- Honeywell 51401469-100 — Newer-generation replacement for HPM I/O; requires updated FTA (Field Termination Assembly). Confirm FTA compatibility.
- Third-party equivalents — Some certified aftermarket suppliers offer functionally equivalent AO cards. Konmask.com sources only tested, quality-verified units.
Note: Replacement compatibility depends on HPM firmware version, FTA model, and system configuration. Contact Konmask.com for a compatibility check before ordering.
Why Choose the Original Model
- Guaranteed backplane compatibility — Designed specifically for TDC 3000 HPM; no firmware patching required.
- Proven field reliability — Widely deployed in refining, petrochemical, and power generation plants worldwide.
- Honeywell factory calibration — Each channel is factory-calibrated to ±0.1% accuracy, reducing commissioning time.
- Long service life — Industrial-grade components rated for continuous 24/7 operation in harsh environments.
- Simplified spare-parts management — Using OEM part numbers simplifies MRO inventory and audit compliance.
Typical Applications
- Control valve positioner output in oil & gas processing units
- Variable-speed drive (VSD/VFD) speed reference signals
- Boiler feedwater control in power plants
- Reactor temperature and pressure control loops
- Compressor anti-surge control systems
- Chemical dosing and blending process control
System Compatibility
- DCS Platform: Honeywell TDC 3000 (TotalPlant Solution)
- Process Manager: HPM (High-Performance Process Manager), PM, APM
- Bus Interface: UCN (Universal Control Network) and LCN (Local Control Network)
- FTA Compatibility: Honeywell MC-TAOY22 and equivalent FTA termination assemblies
- Software: Compatible with Honeywell TPS / Experion PKS migration paths (with appropriate I/O link)
- Not compatible with: Experion C300 native I/O, Safety Manager SIL modules, or third-party DCS backplanes
Selection Guide
Use the following criteria to confirm the 51308112-020 is the correct module for your application:
- Step 1 — Confirm DCS platform: Verify your system is TDC 3000 HPM or compatible PM variant.
- Step 2 — Check channel count: This module provides 8 AO channels. If you need 16 channels, consider dual-slot alternatives.
- Step 3 — Verify output type: Confirm field devices accept 4–20 mA current loop (not voltage output).
- Step 4 — HART requirement: If HART communication is required, evaluate the 51309276-150 with HART pass-through instead.
- Step 5 — FTA matching: Confirm your Field Termination Assembly matches the module’s connector pinout (MC-TAOY22 series recommended).
- Step 6 — Firmware revision: Check HPM firmware version to ensure module revision compatibility. Contact Konmask.com if unsure.
Quality Assurance & Sourcing
- All units sourced by Konmask.com undergo visual inspection, functional bench testing, and calibration verification prior to shipment.
- We supply genuine OEM, refurbished OEM, and certified equivalent units — clearly labeled and documented.
- Each shipment includes a test report and traceability certificate upon request.
- Anti-static packaging and climate-controlled storage ensure module integrity during transit.
- We maintain stock of common TDC 3000 I/O modules for same-day or next-day dispatch on urgent plant requirements.
How to Order
- Online: Add to cart directly on this page. Bulk pricing available for orders of 3+ units.
- Email RFQ: Send your BOM or part list to [email protected] for a formal quotation within 24 hours.
- Phone / WhatsApp: +0086 19859288691 — available for urgent plant shutdown requirements.
- Lead Time: In-stock units ship within 1–3 business days. Ex-stock lead time for sourced units: 5–10 business days.
- Payment: T/T (bank transfer), PayPal, and trade credit available for approved accounts.
- Export: We ship worldwide with full export documentation (commercial invoice, packing list, COO).
Replacement & Compatibility FAQ
Q: Can the 51308112-020 replace the 51308112-025 directly?
A: In most HPM configurations, yes. The -025 revision adds enhanced EMI shielding but is functionally identical. Verify your HPM firmware supports both revisions.
Q: Is this module compatible with Experion PKS?
A: Not natively. TDC 3000 HPM I/O modules require an I/O Link interface for Experion PKS migration. Contact us for migration path guidance.
Q: Do you supply refurbished units?
A: Yes. All refurbished units are fully tested and carry a 90-day functional warranty. OEM new units carry a 12-month warranty.
Q: Can I send my faulty module for repair?
A: Yes. We offer board-level repair services for TDC 3000 I/O modules. Contact [email protected] for a repair RMA.
Q: What FTA do I need with this module?
A: The standard FTA for this AO module is the Honeywell MC-TAOY22 or equivalent. Confirm your existing FTA model before ordering.
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