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        T9851

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        The T9851 is a digital output termination assembly designed for use with Rockwell Automation ICS Triplex Trusted® and AADvance safety systems.
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        Warranty Policy
        We provide 1 year warranty for all remaining parts.
        The warranty period is one year from the date of shipment, unless otherwise stated in the parts description. We guarantee that the project will not exhibit functional defects that may occur under normal operating conditions during the warranty period.
        Return Notice
        The warranty period is one year from the date of shipment, unless otherwise stated in the parts description. We guarantee that the project will not exhibit functional defects that may occur under normal operating conditions during the warranty period.
        In the event of a defect, we will send new equipment, repair equipment or refund the purchase price based on our availability. You must contact us to obtain a return authorization and return the defective device to us within 14 days of reporting the defect.
        Shipping Mode
        Various transportation options are available in each country. Shipping methods and fees are clearly indicated on all quotations.Various transportation options are available in each country. Shipping methods and fees are clearly indicated on all quotations.
        Parts Availability
        Apter Power offers a wide range of components, products and services related to industrial automation. We also supply new products from a variety of quality manufacturers.
        How to order
        We have been working hard to update our inventory. If we have stock or parts available for new factory purchases, you can contact the order online. If we do not currently have an inventory, the displayed quantity will show "Ask". Please create an online quote or contact us by phone, fax or email to check availability.

        Technical specifications for T9851

        • Manufacturer:
          ICS Triplex
        • Part Number:
          T9851
        • Product Family:
          AADvance Controller
        • Product Type:
          Digital Output Termination Assembly
        • System Compatibility:
          Trusted® TMR and AADvance Safety Systems
        • Output Channels:
          8, simplex (single-pole)
        • Operating Voltage:
          24V DC nominal (18-32V DC range)
        • Channel Protection:
          Independent 10A fast-acting fuses (per field power source)
        • Max. Channel Current:
          2A per channel (0-40°C), derated to 1.5A at 60°C
        • Isolation:
          1500VAC channel-to-controller; 1000VAC channel-to-channel
        • Power Consumption:
          4W typical, 6W max
        • Operating Temperature:
          0°C to +60°C
        • Key Benefit:
          The T9851 provides per-channel fusing and isolation, ensuring that a short circuit in one field actuator does not damage the expensive controller module or shut down other safety functions.
        • Weight:
          0.1 kg
        • Estimated shipping dimensions:
          13x4x4.5cm
        • Tariff Code:
          8547909000
        • Country of origin:
          USA
        • Place of shipment:
          Xiamen, Fujian, China
        By purchasing this item, you agree to the Terms & Conditions, ApterPower is not an authorized distributor for listed manufacturers or tradenames and therefore the manufacturer's warranty does not apply. All our products come with ApterPower's 1-year warranty.

        More Information

        Overview Manuals Specifications Application Operating Environment Monitoring and Control

        Features:

        • The T9851 features 8-channel simplex digital output termination for connecting controller modules to field actuators in safety systems.
        • This model includes per-channel fusing with independent 10A field power source protection for fault containment.
        • The T9851 offers diagnostic support for short and open circuit detection to enable rapid troubleshooting.
        The T9851 provides essential protection and diagnostic functions common to the entire safety system, and is a critical component directly affecting the integrity of safety-critical operations. Each of its 8 channels is equipped with protection circuitry and supports diagnostic features like short and open circuit detection, which must be enabled in the controller software. By containing a single faulty actuator at the termination point, the T9851 prevents it from compromising the entire output bank and ensures continuous operation of other safety functions.

        For applications requiring high availability in harsh industrial environments, the T9851 is built for durability with a rugged design suitable for DIN rail mounting. It features isolation of up to 1500VAC between channels and the controller, preventing crosstalk and ensuring signal integrity in electrically noisy environments. The accessible fuses and terminal blocks on the T9851 facilitate rapid troubleshooting and module replacement without extensive system downtime, critical for maintaining process availability.

        The T9851 solves the critical pain point of protecting safety controllers from destructive field wiring faults. By providing per-channel fusing and diagnostic feedback, it ensures that potentially damaging events like short circuits are contained at the termination point. Designed for use in systems certified to IEC 61508 SIL 3, the T9851 is a trusted component in refineries, power plants, and chemical facilities where operational continuity and fail-safe operation are paramount for safety and productivity.

        The T9851 ICS Triplex Digital Output Termination Assembly may still be available for purchase and support from Apter Power beyond End-Of-Life (EOL) by the manufacturer (OEM).

        ICS Triplex T9851 Digital Output Termination Assembly Manuals, Datasheets, Drivers, Link Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
        ICS Triplex T9851 Digital Output Termination Assembly Specs

        General

        • Manufacturer ICS Triplex
        • Model T9851
        • Condition New Original ready stock
        • Product Family T9852,T9892,T9451,T9801
        Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
        • Emergency Shutdown System (ESD): Immediately triggers a safety shutdown procedure when pressure, temperature, or flow exceeds limits.
        • Fire and Gas Monitoring (F&G): Connects to analog signals from various gas detectors or smoke detectors.
        • Critical Process Control: Applied to uninterrupted monitoring in the oil, natural gas, refining, chemical processing, and power industries.
        • Hazardous Area Certification: UL certified, suitable for potentially explosive environments or hazardous locations.
        • Wide Temperature Range Operation: Adaptable to typical industrial cabinet environments and possesses excellent electromagnetic compatibility (EMC), resisting high-frequency noise in heavy industrial settings.
        • Fault-Tolerant Architecture: As part of the AADvance system, it supports distributed fault-tolerant design, ensuring safe system operation even in the event of a single component failure.
        • Signal Acquisition: The T9851 terminal board provides multiple analog input channels (typically 4-20mA or 0-10V) to transmit analog signals from field sensors to the AADvance processor.
        • Real-time Monitoring: With Workstation software, operators can view input point values, status bits, and health diagnostic information in real time.
        • Forcing and Configuration: Supports "point forcing" testing in an online environment, allowing technicians to simulate input values ​​to verify control logic during maintenance.
        Description
        The T9851 operates as a termination assembly that connects digital output modules, such as the T9451, to field devices in high-integrity safety systems. It provides a physical and electrical interface for 8 single-pole (simplex) 24V DC digital output channels.

        The T9851 provides essential protection and diagnostic functions that are critical for maintaining safety integrity. Each of its 8 channels is equipped with its own protection circuitry and supports diagnostic features like short and open circuit detection, which must be enabled in the controller software.

        For applications requiring high availability in harsh industrial environments, the T9851 is built for durability. It features a rugged design suitable for DIN rail mounting and is rated for operation from 0°C to 60°C . Its construction includes isolation of up to 1500VAC between channels and the controller, preventing crosstalk and ensuring signal integrity.

        The T9851 solves the critical pain point of protecting expensive safety controllers from field-side electrical faults. By providing per-channel fusing and diagnostic feedback, it ensures that potentially damaging events like short circuits are contained at the termination point.
        Alternative Names
        T985I T9852 T9451 T9801 T9802 T9803 T9831 T9832
        Technical notes
        The ICS Triplex T9851 termination assembly provides per-channel 10A fusing and diagnostic feedback (short/open circuit detection) for simplex digital outputs, requiring these diagnostics to be enabled in the controller software to maintain SIL 3 integrity per IEC 61508. Its 1500VAC channel-to-controller isolation and rugged DIN rail design ensure fault containment and signal integrity in harsh industrial environments such as refineries and power plants.
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        FAQS

        The following is a list of questions commonly asked by our customers. Please contact us if you have a question about our process that is not answered below.
        VIEW ALL FAQS
        What is the primary function of the T9851 termination assembly?
        Its primary function is to safely interface digital output modules (like the T9451) with field devices. It provides per-channel fusing and isolation to protect the controller from field wiring faults such as short circuits.
        What are the critical electrical specifications for the T9851's output channels?
        The T9851 provides 8 channels rated for 24V DC nominal. Each channel can handle up to 2A at temperatures below 40°C; this must be derated to 1.5A at higher temperatures up to 60°C.
        How does the T9851 help maintenance teams troubleshoot issues?
        The T9851 features accessible, replaceable 10A fuses for quick restoration after a fault. Additionally, it supports short/open circuit detection, which can be enabled in the controller software to provide immediate diagnostic alerts for wiring problems.
        Can the T9851 be used in SIL 3 certified safety instrumented systems?
        Yes, the T9851 is designed for use in systems certified to IEC 61508 SIL 3. Its robust isolation, per-channel fault containment, and compatibility with TMR architectures make it suitable for the most demanding safety-critical applications.

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