HONEYWELL 8C-PCNT02 – Series C pulse/count input module for Experion PKS/C300 I/O

The HONEYWELL 8C-PCNT02 is a Series C I/O module typically used to bring high‑integrity pulse and frequency signals into an Experion PKS C300 controller. From my experience, it’s the piece you reach for when you need accurate totalizing from turbine flowmeters, counting from proximity sensors, or rate/speed feedback from encoders in a refinery, chemical unit, or discrete packaging line. You might notice that it slots into the standard Series C I/O base (IOTA) and works with the matching Field Terminal Assembly (FTA), so wiring stays clean and serviceable.

Company’s Order Placement Process and Guarantees

• Warranty: 365 days
• Delivery time: 1 week for in-stock items; no more than one month at the latest
• Payment: 50% advance payment; full payment prior to delivery
• Express delivery: FedEx, UPS, DHL

Key Features

• Pulse/frequency inputs for industrial sensors – Typically used with turbine flowmeters, proximity switches, and encoder outputs for totalizing or speed/rate calculations.
• Series C architecture compatibility – Plugs into Honeywell Series C I/O (IOTA/IOM), making it straightforward to engineer within Experion PKS C300 systems.
• Deterministic controller integration – Signals are processed by the C300 controller for fast, predictable control behavior.
• Noise‑resilient field wiring design – Works with the appropriate Honeywell FTA, helping reduce noise pickup and easing maintenance at the cabinet front.
• Configuration flexibility – Channel parameters (such as debounce and count direction, where used) can typically be configured in software to match field devices.
• Serviceable in place – Front access to terminations via the FTA; module can be replaced with minimal disruption when following Honeywell’s maintenance procedures.

Technical Specifications

Note: Specs reflect typical Series C behavior for pulse/count I/O modules. For exact channel counts and electrical thresholds, please confirm against your installed revision.

Application Fields

• Oil & Gas: Turbine and positive displacement flowmeter totalizing, proving skids, and LACT units.
• Refining & Petrochem: Pump speed monitoring, compressor surge protection inputs, and batch counting.
• Power & Utilities: Speed pickup pulses, breaker operation counts, and water intake flow totalizers.
• Food & Beverage / Packaging: Bottle/can counts, conveyor rate feedback, encoder pulses for cut‑to‑length.
• Mining & Metals: Feeder counts, conveyor belt speed, and bucket‑wheel rotation monitoring.

Advantages & Value

• Native Experion integration – No gateways or custom drivers; engineering and diagnostics live in the same toolset.
• Stable supply and lifecycle – Honeywell Series C modules are widely deployed; replacements are straightforward to keep spares common.
• Reduced panel complexity – IOTA/FTA approach streamlines wiring and gives maintenance technicians easy access.
• Lower risk during turnarounds – Drop‑in replacement when the base hardware is already Series C, typically no rework of terminations.
• Support for redundancy strategies – Works within C300 redundant architectures when applied per Honeywell design practices.

Installation & Maintenance

• Cabinet standards – Install on the designated Series C IOTA inside a ventilated control cabinet; maintain ambient 0–50°C and keep humidity under control to avoid condensation.
• Wiring practices – Use shielded twisted pairs for pulse/frequency inputs, ground shields at one end (typically the cabinet end), and follow FTA terminal labeling.
• Power & grounding – Ensure proper 24 VDC distribution to the IOTA and clean instrument ground; separate high‑power and signal wiring routes.
• Safety – Isolate energy, verify signal levels, and respect intrinsic safety barriers if your zone requires IS implementations.
• Routine maintenance – Periodically check terminal tightness, inspect cable shields, review count accumulation logic in the controller, and apply firmware updates during planned outages when recommended by Honeywell.

Quality & Certifications

• CE compliance for industrial environments (EMC/Low Voltage) – typical for Series C hardware.
• RoHS conformity on modern production builds.
• UL/cUL markings are commonly available for North American installations (verify per exact revision).
• Manufacturer’s warranty policy applies; our supply includes a 365‑day warranty.

Suggested Supporting Components

• Series C IOTA (I/O Termination Assembly) – The base/backplane unit that the 8C‑PCNT02 plugs into.
• Matching Field Terminal Assembly (FTA) – Front‑of‑cabinet field wiring interface; choose the pulse‑input FTA variant for your sensor type (dry contact, proximity, encoder).
• Experion PKS C300 Controller – Executes logic using the pulse counts for totalizing, rate, and interlocks.
• Shielded instrument cabling and IS barriers – Where hazardous area classifications apply.

One thing I appreciate is how the IOTA/FTA split keeps the cabinet neat and makes swap‑outs quick. In many cases, technicians tell us they can replace a module during a short window without disturbing any field terminations.