The 8C-PDIPA1 (P/N: 51454471-375) is a high-density, hybrid Digital Input module for the Honeywell Experion PKS Series 8 / C300 platform. It combines standard 24VDC status monitoring with high-speed pulse counting, offering flexible input functionality in a single module.
The module features a 32-channel configuration, where channels 1–16 are software-configurable for either pulse accumulation or frequency measurement, and channels 17–32 operate as standard digital inputs. This hybrid architecture enables simultaneous discrete monitoring and pulse totalization, reducing cabinet I/O footprint and simplifying wiring.
| Item | Specification |
|---|---|
| Model Designation | 8C-PDIPA1 |
| Part Number | 51454471-375 |
| Module Type | Digital Input (DI) / Pulse Accumulator Hybrid |
| Input Voltage | 24 VDC Nominal |
| Total Channels | 32 Channels |
| Dual-Function Channels | Channels 1–16 (DI or Pulse Accumulation) |
| Standard DI Channels | Channels 17–32 |
| Measurement Capabilities | Pulse counting, frequency measurement, discrete state sensing |
| Physical Dimensions (W×H×D) | 3.2 × 12.7 × 12.7 cm |
| Net Weight | 0.2 kg |
| Environmental Protection | Conformal Coated (CC) |
| System Platform | Experion PKS Series 8 / C300 |
The 8C-PDIPA1 is ideal for multi-functional process skids, where both:
Status monitoring (valve limits, motor run/stop)
Pulse totalization (from flowmeters or encoders)
are required on a single module, reducing the number of I/O cards and simplifying cabinet wiring in industrial control systems.
Q: Can all 32 channels be used for pulse accumulation?
A: No. Pulse accumulation and frequency measurement are supported only on channels 1–16. Channels 17–32 operate as standard digital inputs.
Q: What types of sensors are compatible with the pulse channels?
A: The module accepts 24VDC pulse signals from field devices such as magnetic flowmeters, turbine meters, or optical encoders.
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