Products Description
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Honeywell 8C-PDILA1 51454471-175 Digital Input Module
Category: Digital Input Module
Series: Honeywell Series 8
Type: 24 VDC Digital Input, Conformal Coated, 32 Channels
– Product Overview
The Honeywell 8C-PDILA1 is a 24VDC digital input module engineered for high-performance industrial automation environments. Part of the robust and compact Series 8 I/O suite, this module supports 32-channel digital input acquisition with galvanic isolation, internal diagnostics, optional redundancy, and onboard field power excitation. It is well-suited for critical process control applications requiring fast response, reliable performance, and long-term maintainability.
– Technical Specifications
| Parameter | Details |
|---|---|
| Model Number | 8C-PDILA1 |
| Description | Digital Input 24VDC, Conformal Coated, 32-Channel |
| Input Voltage Range | 18 to 30 VDC |
| ON Sense Voltage/Current | ≥ 13 VDC or ≥ 3 mA |
| OFF Sense Voltage/Current | ≤ 5 VDC or ≤ 1.2 mA |
| Input Impedance | 4.2 kΩ |
| Input Channels | 32 |
| Galvanic Isolation | 1000 VAC RMS or ±1500 VDC |
| Isolation Method | Optical |
| Module Current Rating | 95 mA |
| Field Resistance (ON condition) | ≤ 300 Ω @ 15 VDC |
| Field Resistance (OFF condition) | ≥ 30 kΩ @ 30 VDC |
| Absolute Input Delay | 5 ms ± 20% |
| Module Removal Under Power | Supported |
| Voltage Rating | 24 VDC |
| Coating | Conformal Coated (G3 per ISA S71.04) |
| Dimensions (W x H x D) | 60 x 155 x 145 mm |
| Weight | 0.3 kg |
– Product Features
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Supports 32 discrete digital input channels for 24VDC signals
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Galvanic isolation between system and field
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Conformal coating for harsh environments (moisture, dust, chemicals)
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Fast signal acquisition with minimal input delay
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Onboard field power excitation, eliminating need for marshalling
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Field-side indication with direct/reverse input compatibility
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Hot-swappable under power for improved maintainability
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Compatible with redundant configurations on 8C-TDILB1 IOTA
– Product Advantages
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Reduced installation time through integrated field wiring and terminal design
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Increased system uptime with hot-swappable module replacement
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Lower TCO by removing need for external power supplies or fuse blocks
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Enhanced signal integrity with optical isolation and onboard diagnostics
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Supports redundancy for high availability systems
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Compact footprint, ideal for high-density control cabinets
– Application Areas
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Oil and Gas Pipeline Monitoring Systems
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Chemical and Petrochemical Automation
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Power Plant DCS Infrastructure
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Pharmaceutical Process Control
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Water and Wastewater Treatment Facilities
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Industrial Manufacturing Automation
– Latest Technical Documentation Report
Title: Series 8 Controller and I/O Specification – S803-150-520 – Release 520 (March 2022)
– Recommended Related Honeywell Series 8 Models
| Model | Description | Type | Channels | Dimensions (mm) | Weight (kg) |
|---|---|---|---|---|---|
| 8C-PDISA1 | Digital Input Sequence of Events | Digital Input | 32 | 60 x 155 x 145 | 0.3 |
| 8C-PDIPA1 | Digital Input with Pulse Accumulation | Digital Input | 32 | 60 x 155 x 145 | 0.3 |
| 8C-PDODA1 | Digital Output 24VDC, Bussed Output | Digital Output | 32 | 60 x 155 x 145 | 0.3 |
| 8C-PAIHA1 | Analog Input with HART, Single-Ended | Analog Input | 16 | 60 x 155 x 145 | 0.3 |
| 8C-PAONA1 | Analog Output without HART | Analog Output | 16 | 60 x 155 x 145 | 0.3 |
| 8C-PAOHA1 | Analog Output with HART | Analog Output | 16 | 60 x 155 x 145 | 0.3 |
– Recommended Popular Honeywell Models
| Model | Description | Type | Channels | Dimensions (mm) | Weight (kg) |
|---|---|---|---|---|---|
| 8C-PCNT01 | Series 8 C300 Controller | Controller | – | 60 x 155 x 145 | 0.3 |
| 8C-PAIH54 | Analog Input with HART, Differential | Analog Input | 16 | 60 x 155 x 145 | 0.3 |
| 8C-PDODA1 | Digital Output 24VDC | Digital Output | 32 | 60 x 155 x 145 | 0.3 |
| 8C-PAIMA1 | Low-Level Analog Input for RTD/TC | Temperature Input | 16 | 60 x 155 x 145 | 0.3 |
| 8C-PDISA1 | Digital Input SOE (Sequence of Events) | Digital Input | 32 | 60 x 155 x 145 | 0.3 |
| 8C-PCNT03 | Series 8 C300 Controller, Updated Model | Controller | – | 60 x 155 x 145 | 0.3 |
FAQ
– Frequently Asked Questions (FAQ)
Q1: What is the maximum input voltage supported by the 8C-PDILA1 module?
A1: The module supports input voltages in the range of 18 to 30 VDC.
Q2: Can the 8C-PDILA1 module be hot-swapped during operation?
A2: Yes, the module supports removal and insertion under power.
Q3: What type of isolation is used in the 8C-PDILA1?
A3: Optical isolation is implemented between the field side and system electronics.
Q4: How many digital input channels does the module support?
A4: The 8C-PDILA1 supports 32 digital input channels.
Q5: Is this module suitable for use in hazardous environments?
A5: Yes, it conforms to Class I, Division 2 and Zone 2 hazardous location certifications.
Q6: What is the typical delay for input signal processing?
A6: The input delay across the isolation barrier is approximately 5 ms ± 20%.
Q7: Can the module operate in redundant configurations?
A7: Yes, the module supports redundancy when used with the 8C-TDILB1 IOTA.
Q8: What is the total power consumption of the module?
A8: The module consumes approximately 95 mA at 24 VDC nominal supply.
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Packing & Delivery
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