Product Details
Overview:
The Honeywell 8C-PDISA1 module is designed to capture discrete 24 VDC signals with high precision timing for Sequence of Events (SOE) recording. It offers flexible operation modes, robust diagnostics, and enhanced reliability, making it ideal for critical industrial and process control applications.
Key Features:
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Operation Modes: Normal (20 ms PV scan), SOE (1 ms resolution, 20 ms PV scan), Low Latency (5 ms PV scan)
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Diagnostics: Advanced internal diagnostics for data integrity
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Redundancy: Optional redundancy for improved reliability
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Power Source: Supports internal or external field power sources
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Excitation Power: Onboard excitation power eliminates need for external marshalling
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Input Indication: Direct/Reverse input indication for clear signal status
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Isolation: Galvanic isolation ensures safety and signal integrity
Technical Specifications:
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Model Number: 8C-PDISA1
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Module Type: Digital Input Sequence of Events, Coated
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Input Channels: 32 discrete inputs
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Input Scan Rate: Normal: 20 ms, Fast: 5 ms
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SOE Digital Resolution: 1 ms
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Voltage Rating: 24 VDC
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Input Power Range: 18–30 VDC
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Module Current: 95 mA
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Galvanic Isolation: 1000 VAC RMS / ±1000 VDC, optical isolation
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ON Sense Voltage/Current: ≥13 VDC / ≥3 mA
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OFF Sense Voltage/Current: ≤5 VDC / ≤1.2 mA
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Input Impedance: 4.2 kΩ
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Absolute Delay: 5 ms ±20%
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Field Resistance (ON): ≤300 Ω @ 15 VDC
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Field Resistance (OFF): ≥30 kΩ @ 30 VDC
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Hot Swap Capability: Module can be inserted or removed under power
Compatible Modules:
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8C-TDILA1: Non-redundant, Coated, 9"
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8C-TDILB1: Redundant, Coated, 12"
Applications:
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Process Monitoring: Sequence of Events recording in process control
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Automation: Monitoring and automation of critical field devices
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Diagnostics: Power system and industrial plant diagnostics
FAQ:
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Q: What is the minimum resolution for SOE?
A: The module supports 1 ms digital resolution for accurate event timing. -
Q: Can it operate with external field power?
A: Yes, it can use either internal or external power sources. -
Q: Is it safe for harsh industrial environments?
A: Yes, galvanic isolation and robust diagnostics ensure safe, reliable operation.
Additional Information
- 100% Genuine Parts: All products are original and authentic, ensuring reliable industrial performance.
- 30-Day Refund Guarantee: Return any in-stock item within 30 days in original, unopened packaging for a full refund (excluding shipping and fees).
- 12-Month Warranty: Covers defects in materials or workmanship; excludes misuse, normal wear, or unauthorized modifications.
- Worldwide Shipping: We ship via USPS, UPS, FedEx, and DHL. Delivery times vary by country and may be subject to customs or import fees.
- Support & Contact: Technical and warranty assistance is available anytime. Contact us here: Contact.
- Purchase Guidance: Check product specifications and compatibility carefully before ordering to ensure proper application.
Tech & Buying Guide
Redundant Automation Systems: Ensuring Continuous Uptime in Critical Control Infrastructure
System reliability directly determines operational profitability across high stakes process industries. Modern industrial automation platforms must eliminate single points of failure to prevent catastrophic shutdowns. Deploying fault tolerant architecture safeguards complex facilities against unexpected hardware glitches, network disruptions, and maintenance outages.
Understanding Types of Noise in Electronic Circuits and Control Systems
Signal integrity directly determines measurement accuracy and loop stability across industrial automation environments. Electronic noise introduces unwanted stochastic interference into analog loops, sensor feedback lines, and digital fieldbus networks. Understanding how intrinsic electronic noise and external electromagnetic interference manifest allows control engineers to optimize signal conditioning and shield sensitive instrumentation effectively.
Why 24V DC Power Supplies Standardize Modern Industrial Automation
Industrial control cabinets worldwide rely on 24V DC as the universal power standard for field instrumentation, sensors, and controllers. Walk into any manufacturing plant, and you will find PLCs, human-machine interfaces (HMIs), and smart actuators running on extra-low voltage DC. Standardizing on 24V DC enhances operational safety, lowers cabinet footprint, and maintains steady control performance across factory networks.