T915A-1177 HONEYWELL

HONEYWELL T915A-1177 Termination Unit

Brand：HONEYWELL Model number：T915A-1177

Country of origin: United States Product weight：0.4kg

HS code：8517623990

Product Details：

Product Dimensions：

A Honeywell Termination Unit is a purpose-built assembly that serves as the connection point for field wiring. It’s designed to be mounted in a control cabinet or junction box and provides screw terminals or other connectors for easy and secure hookup of wires from field devices. The unit then connects to the Honeywell I/O modules (like those from the C-series or Series 8 systems) via a pre-fabricated cable, which significantly reduces the potential for wiring errors and simplifies system layout.

Functionality: The primary function is to consolidate and organize field wiring. It provides dedicated terminals for each I/O point, often including separate terminals for power, ground, and signal wires. Some units may include passive components like resistors or fuses for signal conditioning and protection. This design separates the complex field wiring from the sensitive electronics of the control system, making troubleshooting and maintenance much easier.
Types: Honeywell offers a variety of Termination Units tailored to specific I/O module types and applications. These include units for:

Digital I/O: For on/off signals from switches, pushbuttons, and solenoids.
Analog I/O: For continuous signals from temperature transmitters, pressure sensors, and flow meters.
Intrinsically Safe (IS) I/O: These are specially designed units that incorporate safety barriers to limit energy to field devices, preventing sparks in hazardous area applications.

Key Features:

Labeled Terminals: Clearly marked terminals for each I/O point, making wiring straightforward and reducing errors.
DIN Rail Mountable: Designed for easy and secure mounting in standard industrial cabinets.
Pre-fabricated Cabling: Uses high-density cables (often with 50-pin or 37-pin connectors) to link the termination unit to the I/O card, eliminating tedious point-to-point wiring between them.
Rugged Construction: Built to withstand industrial environments, with robust terminals that provide secure connections against vibration.
Integrated Components: Some units include fuses, status LEDs, or signal conditioning circuitry directly on the board.

Product Parameters

Specific parameters will vary based on the model and application, but common ones include:

Number of Channels: The number of I/O points supported per unit (e.g., 8, 16, 32 channels).
Terminal Type: Screw terminals, spring clamps, or other types of connectors.
Voltage Rating: Maximum voltage for the I/O signals (e.g., 24VDC, 120VAC).
Current Rating: Maximum current per channel.
Operating Temperature: The specified temperature range for the unit.
Dimensions: Physical size and form factor.
Compatibility: Designed for use with specific Honeywell control systems and I/O cards (e.g., Experion PKS, TPS, TDC 3000).

Product Advantages

Reduced Installation Time: The use of pre-fabricated cables dramatically cuts down on the time required for field wiring.
Simplified Maintenance: You can easily disconnect and replace an I/O card without having to re-wire the field devices. The organized layout of the terminals also makes troubleshooting much quicker.
Increased Reliability: The secure, factory-made cable connections reduce the chance of human error and faulty wiring.
Improved Organization: A clean, structured wiring layout in the control cabinet makes the entire system easier to manage and understand.
Enhanced Safety: Intrinsically safe termination units provide a crucial layer of protection for hazardous area applications.
Cost-Effective: While there's an initial cost for the unit and cable, the savings in installation time and reduced downtime often make it a more economical solution for large projects.

Important Considerations

Compatibility: Always ensure the termination unit is compatible with the specific Honeywell I/O module you're using. Mismatched components can lead to system malfunction or damage.
Wiring Practices: Even with a termination unit, proper wiring practices for the field side are essential. Use the correct wire gauges and ensure all connections are secure.
Environmental Conditions: The unit must be installed in a suitable environment, typically within a sealed control cabinet to protect it from dust, moisture, and extreme temperatures.
Documentation: Refer to the official Honeywell product documentation for specific wiring diagrams, installation instructions, and technical specifications for the exact model you are working with.

Product Applications

Honeywell Termination Units are used extensively in industries that rely on large-scale process automation and distributed control systems (DCS):

Oil and Gas: In refineries, offshore platforms, and pipelines to connect a multitude of sensors, valves, and pumps to the main control system.
Power Generation: In power plants to handle signals from turbines, boilers, generators, and auxiliary systems.
Chemical and Petrochemical: For automating complex batch and continuous processes, managing signals from reactors, tanks, and pumps.
Pharmaceuticals: In manufacturing facilities to control and monitor validated processes, ensuring precision and compliance.
Mining and Metals: To manage control loops for crushers, conveyors, and other heavy machinery.

T915A-1177 HONEYWELL

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