Product Overview
The Honeywell 51304485-150 is a 32-channel Digital Input IOP (Input/Output Processor), designated MC-PDIX02, that forms the processor-side half of a digital input pair in Honeywell TDC 3000, TotalPlant Solution (TPS), and Experion PKS distributed control systems. The Honeywell 51304485-150 is not a stand-alone field device: it is a rack-mounted IOP card that plugs into the I/O card file of a Process Manager, Application Process Manager, or High-Performance Process Manager (PM / APM / HPM) and communicates across the system backplane while exchanging field signals through a separately mounted Digital Input Field Termination Assembly (FTA). Together, the IOP and FTA convert the open/closed state of 32 field contacts into deterministic digital data that the controller can execute as interlock logic, alarm generation, sequencing, and status indication.
The Honeywell 51304485-150 accepts thirty-two contact inputs that share an isolated common return. Depending on the FTA fitted, those inputs may be 24 VDC discrete signals, 120 VAC, or 240 VAC—the IOP itself is the processing element, while the FTA provides the voltage-specific sensing, isolation, and screw-terminal field connection. This division of labor is deliberate: the Honeywell 51304485-150 keeps signal conditioning, debouncing, diagnostics, and backplane communication on a single, replaceable printed-wiring assembly, while the FTA handles the higher-voltage field termination in a location that remains accessible with the cabinet doors open.
The 150 suffix denotes the CE-compliant version of the MC-PDIX02, and the assembly is finished with a conformal coating that protects the PCB against humidity and corrosive chemical atmospheres. Rated for 0 to +55 °C, approximately 5 W power dissipation, and 1500 VAC channel-to-backplane isolation, the Honeywell 51304485-150 is built for continuous-duty operation in unconditioned or corrosive cabinets—offshore platforms, refinery unit substations, and chemical-process areas where uncoated electronics would fail prematurely. It is the high-density, field-proven route to bringing 32 discrete states into a Honeywell DCS without auxiliary relay panels or custom signal conditioning.
Technical Specifications
| Parameter Name | Parameter Value |
|---|---|
| Product Model | 51304485-150 |
| Module Designation | MC-PDIX02 |
| Alternate Designation | MC-PD1X02 (common reseller rendering; same 51304485-150 assembly) |
| Manufacturer | Honeywell (Honeywell Process Solutions) |
| Product Type | Digital Input IOP (Input/Output Processor) |
| Series / Platform | Honeywell TDC 3000 / TPS / Experion PKS (PM, APM, HPM) |
| Input Channels | 32 contact inputs (share an isolated common return) |
| Input Signal Type | Dry contact / voltage-free contact; wet contact with FTA |
| Input Range with 24 VDC FTA | 20–30 VDC |
| Input Range with 120 VAC FTA | 90–132 VAC rms |
| Input Range with 240 VAC FTA | 180–264 VAC rms |
| Isolation | Channel-to-backplane, 1500 VAC (galvanic / optical isolation) |
| Response Time | ≤ 10 ms typical (on/off) |
| Power Consumption | Approximately 5 W (5 VDC backplane supply) |
| Conformal Coating | Yes — moisture and chemical-gas resistant |
| CE Compliance | Yes (suffix 150) |
| Redundancy Support | No (not supported at IOP level) |
| Grouping | Inputs grouped in sets of 8; each group has a common return |
| Operating Temperature | 0 °C to +55 °C (typical; 0 to +60 °C reported) |
| Storage Temperature | -40 °C to +85 °C |
| Humidity | 5–95% RH, non-condensing |
| Mounting | I/O card-file slot (PM / APM / HPM chassis) |
| Termination Interface | Field Termination Assembly (FTA) via IOP interface cable (DB50) |
| Dimensions | 213 × 200 × 20 mm (typical card-form factor; source-dependent) |
| Weight | 0.662 kg (0.35–2.0 kg range reported; form-factor dependent) |
| Compliance | CE; safety approvals confirmed against unit nameplate |
