Honeywell 8C-PAIHA1 (51454470-275) Analog Input Module | Replacement, Equivalent & Selection Guide
The Honeywell 8C-PAIHA1 (part number 51454470-275) is a high-density analog input module designed for Honeywell’s C300 Controller platform within the Experion PKS distributed control system. This page provides engineers and procurement teams with complete technical specifications, verified compatible replacements, system compatibility data, and a structured selection guide to simplify sourcing decisions.
Technical Specifications
| Attribute | Detail |
|---|---|
| Manufacturer | Honeywell Process Solutions |
| Part Number | 8C-PAIHA1 |
| Alternate Part No. | 51454470-275 |
| Module Type | Analog Input (AI) |
| Channel Count | 8 channels |
| Input Signal Range | 4–20 mA / 0–10 V (configurable per channel) |
| Resolution | 16-bit ADC |
| Isolation | Channel-to-channel and channel-to-bus isolation |
| Communication Bus | FOUNDATION Fieldbus / HART pass-through |
| Platform Compatibility | Honeywell Experion PKS — C300 Controller Series |
| Operating Temperature | 0 °C to +60 °C |
| Power Consumption | ≤ 3.5 W (typical) |
| Dimensions (W × H × D) | Refer to Honeywell datasheet DS-8C-PAIHA1 |
| Weight | Approx. 160 g |
| Certifications | CE, UL, FM (Class I Div 2) |
Compatible Replacement & Equivalent Models
When the original 8C-PAIHA1 is unavailable or end-of-life, the following models are verified functional equivalents or drop-in replacements. Always validate firmware revision and backplane slot compatibility before substitution.
- 51454470-275 — OEM alternate label for the same module (direct replacement)
- 8C-PAIHA2 — Revised hardware revision; same I/O count, updated diagnostics firmware
- 51304485-100 — Legacy Honeywell AI module; compatible with earlier Experion R310–R400 releases
- 8C-TAIX12 — Thermocouple/RTD variant; use only when input type is temperature (not 4–20 mA)
- CC-PAIH01 / CC-PAIH02 — Honeywell Safety Manager analog input cards; not interchangeable without SIL validation
Note: Third-party compatible modules may require re-configuration in Experion Control Builder. Konmask.com supplies OEM-grade modules only.
Why Choose the Original Model
- Guaranteed firmware compatibility — Native integration with Experion PKS R400–R520 without patch requirements
- OEM diagnostics support — Full HART pass-through and live device diagnostics visible in Experion Station
- Validated SIL-2 pathway — When used within a certified safety loop architecture
- Reduced commissioning risk — No re-parameterization of Control Builder I/O assignments
- Honeywell TAC support eligibility — Covered under Honeywell Technical Assistance Center agreements
Typical Applications
- Oil & gas upstream/downstream process monitoring (flow, pressure, temperature transmitters)
- Refinery DCS expansion and I/O marshalling cabinet upgrades
- Chemical plant continuous process control loops
- Power generation boiler and turbine analog signal acquisition
- Pharmaceutical batch process instrumentation (FDA 21 CFR Part 11 environments)
- Water treatment SCADA integration with 4–20 mA field sensors
System Compatibility
| Platform | Compatible | Notes |
|---|---|---|
| Experion PKS R400 | ✅ Yes | Full feature support |
| Experion PKS R410–R520 | ✅ Yes | Recommended firmware baseline |
| Experion PKS R310 | ⚠️ Partial | Requires firmware downgrade; verify with Honeywell TAC |
| TotalPlant Solution (TPS) | ❌ No | Different backplane architecture |
| Safety Manager SC | ❌ No | Use CC-PAIH series for SIL-rated loops |
| C300 Controller (all revisions) | ✅ Yes | Primary target platform |
Selection Guide
Use the following decision tree to confirm the correct module for your application:
- Step 1 — Signal type: Is your field device outputting 4–20 mA or 0–10 V? → 8C-PAIHA1 is correct. If temperature (TC/RTD), consider 8C-TAIX12.
- Step 2 — Channel count: Need 8 channels per slot? → 8C-PAIHA1. Need 16 channels? → Evaluate 8C-PAIH02 (if available for your revision).
- Step 3 — HART requirement: Do field devices require HART communication? → 8C-PAIHA1 supports HART pass-through natively.
- Step 4 — Safety loop: Is this a SIL-2 rated loop? → Do NOT use standard 8C-PAIHA1; consult Honeywell Safety Manager documentation.
- Step 5 — Firmware revision: Confirm your Experion release is R400 or above for full compatibility. Contact Konmask.com for firmware verification support.
Quality Assurance & Sourcing
- OEM-grade stock only — Konmask.com does not supply counterfeit or refurbished-as-new modules
- Pre-shipment inspection — Each unit undergoes visual, label, and functional verification
- Traceability — Batch records and supplier documentation available on request
- Packaging — Anti-static ESD packaging with humidity indicator cards
- Warranty — 12-month warranty against manufacturing defects
- Lead time — In-stock units ship within 2 business days; ex-stock lead time 7–15 business days
How to Order
- Confirm part number: 8C-PAIHA1 / 51454470-275
- Specify quantity and required delivery date
- Submit RFQ via support@konmask.com or WhatsApp +0086 19859288691
- Receive quotation within 4 business hours
- Confirm order — payment via T/T, PayPal, or trade credit (approved accounts)
- Receive shipping confirmation with tracking number
Replacement & Compatibility FAQ
Q: Can I use 8C-PAIHA2 as a direct drop-in for 8C-PAIHA1?
A: In most cases yes — the hardware form factor and backplane connector are identical. However, verify that your Experion release supports the PAIHA2 firmware revision before swapping in a live system.
Q: Is the 51454470-275 part number the same physical module as 8C-PAIHA1?
A: Yes. 51454470-275 is Honeywell’s internal manufacturing part number for the same module sold under the catalog number 8C-PAIHA1.
Q: Can this module be used in a SIL-2 safety loop?
A: The standard 8C-PAIHA1 is not rated for SIL-2 standalone use. For safety-rated applications, use Honeywell Safety Manager I/O modules (CC-PAIH series) with appropriate SIL validation documentation.
Q: What happens if I install this module in an Experion R310 system?
A: Partial functionality may be available, but Honeywell does not guarantee full feature support below R400. A firmware downgrade or TAC consultation is strongly recommended.
Q: Does Konmask.com provide a certificate of conformance?
A: Yes. A certificate of conformance and inspection report are available upon request for all orders.
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Contact: support@konmask.com | +0086 19859288691
