ICS Triplex T9851 Digital Output Termination Assembly

The ICS Triplex T9851, also cataloged as the T9851 Digital Output Termination Assembly, provides the physical field-wiring interface between AADvance digital output modules and field actuators. It supports digital output termination for safety controller applications and interfaces with field devices such as valves, solenoids, and alarm relays.

Hardware Specifications

AADvance Safety Termination and Redundancy

The T9851 provides the field termination point for digital output circuits associated with the AADvance safety controller. Its termination function separates cabinet-side controller wiring from field actuator connections and supports multi-channel digital output circuits.

The assembly is specified for AADvance TMR and DMR architectures. In TMR configurations, the termination interface forms part of a three-channel safety control arrangement. The supplied data specifies SIL 2 / SIL 3 application capability according to IEC 61508. Field wiring connections are provided through screw-terminal or spring-clamp interfaces according to the installed termination configuration.

Frequently Asked Questions

Q: What voltage range is specified for the T9851?

A: The supplied data specifies an operating range of 18 to 32 VDC, with 24 VDC as the nominal operating voltage.

Q: Is the T9851 compatible with redundant AADvance architectures?

A: Yes. The supplied data specifies compatibility with both TMR and DMR AADvance configurations.

Q: Can the T9851 be replaced during system maintenance?

A: The supplied data identifies hot-swappable support for maintenance and replacement. The applicable system maintenance procedure should be followed before removal or replacement.

Field Installation Guidelines

Install the T9851 on the specified DIN rail or baseplate within the AADvance controller cabinet. Verify that the mounting hardware provides mechanical retention before connecting field wiring.

Route digital output conductors separately from high-energy power wiring where practical to reduce electromagnetic coupling. Maintain appropriate separation between signal and power circuits according to the cabinet wiring standard.

Terminate field conductors using the applicable terminal interface and verify conductor identification against the system wiring documentation. Cable shields, where used, should be bonded according to the project grounding and EMC design.

Before energizing the circuit, verify polarity, terminal assignment, supply voltage, and actuator wiring continuity. For redundant safety architectures, confirm that all termination connections correspond to the designated controller channels.