Emerson DeltaV KJ3002X1-BG2​ 16-Channel 24 VDC Discrete Input Module – Redundant I/O for DeltaV PKS

Description

Technical Specifications

Main Features and Advantages

Per-channel universal input flexibility: The standout advantage of the Honeywell 900TCK-0001​ is that all 16 channels are independently software-selectable for signal type. A single rack can therefore mix temperature inputs (TC and RTD) with analog process signals (4–20 mA from pressure/flow transmitters or 0–10 V from analytical instruments) without requiring different hardware modules. This drastically reduces spare parts inventory and simplifies project design changes late in the engineering phase.Integrated cold-junction compensation and sensor diagnostics: The Honeywell 900TCK-0001​ incorporates a precision CJC sensor mounted on the terminal block interface to automatically correct thermocouple readings for ambient temperature variation at the connection point. Additionally, the module detects open thermocouple/RTD circuits and over-range/under-range conditions, reporting fault status to the controller so that operators can distinguish a failed sensor from a genuine process upset—critical for batch traceability and safety interlock integrity.High noise immunity through optical isolation: Each input group on the Honeywell 900TCK-0001​ is galvanically isolated from the backplane bus and from other I/O modules, with 250 V AC isolation rating. This prevents ground-loop-induced measurement drift in plants where field instruments return to different earth references, a common issue in retrofit and multi-vendor installations. The result is stable, repeatable analog readings even adjacent to VFDs, motor starters, or high-current contactors.Hot-swap capable with removable terminal block: When used in an HC900 rack with redundant power, the Honeywell 900TCK-0001​ can be replaced without removing field wiring—simply unplug the module from the terminal base and insert the replacement. The accompanying 900TBK-0001 terminal block retains all field connections, minimizing downtime during corrective maintenance. Configuration is automatically downloaded from the HC900 controller upon reinsertion, eliminating manual DIP-switch setting or re-commissioning.

Application Field

The Honeywell 900TCK-0001​ is purpose-built for process and hybrid industries where accurate, multi-variable analog data acquisition is fundamental to closed-loop control. In pharmaceutical and biotechnology facilities, the Honeywell 900TCK-0001​ acquires jacket temperature from reactor skids (typically Pt100 RTDs), CIP/SIP cycle temperatures via Type T or J thermocouples, and 4–20 mA signals from conductivity cells, pH probes, and pressure transmitters—all within a single module, supporting FDA 21 CFR Part 11-compliant batch records through the HC900’s integration with Experion PKS.In food & beverage processing, the Honeywell 900TCK-0001​ monitors pasteurizer plate temperatures, holding tube differential pressures, and tank level transmitter outputs, providing the HC900 controller with the data needed for precise PID loop control of cook/hold/cool cycles. Water and wastewater treatment plants deploy the Honeywell 900TCK-0001​ to read influent/effluent pH (4–20 mA), dissolved oxygen (0–10 V), turbidity, and clarifier tank temperatures—often mixing signal types on one module to reduce panel space and I/O rack count. In smaller power auxiliaries and combined heat & power (CHP) units, the Honeywell 900TCK-0001​ gathers boiler drum temperature profiles, bearing RTDs from gensets, and lube-oil pressure transmitter signals, feeding them to the HC900 for alarm monitoring and trend logging. Across all these applications, the Honeywell 900TCK-0001​ solves the engineer’s challenge of needing maximum analog input flexibility in the smallest possible footprint with minimal configuration overhead.