T9831 ICS Triplex Analog Input Termination Assemblies

The ICS Triplex T9831, also cataloged as the 9831 Analog Input Termination Assembly, operates as a dedicated hardware component for 16-channel analog signal acquisition and wiring termination within ICS Triplex Trusted systems. Supporting both simplex and commoned wiring configurations, this assembly conditions non-isolated analog inputs from field sensors and routes them directly to system input modules across an operating temperature range of -20 to +60 deg C (-4 to +140 deg F).

Hardware Specifications

Triple Modular Redundancy and Signal Conditioning

The ICS Triplex T9831 termination assembly routes incoming field signals into triple modular redundancy (TMR) 2oo3 architecture control platforms designed to meet SIL3 certification requirements. Across all 16 channels, field wiring is terminated onto high-density connector blocks that maintain channel routing integrity to the system backplane. In configurations requiring fail-safe state execution, the module supports external signal isolators to maintain galvanic isolation between field loops and internal processing logic.

Frequently Asked Questions

Q: What is the difference between simplex and commoned wiring configurations on the T9831 assembly?

A: Simplex configuration provides independent loop return paths for individual channels, whereas commoned configuration ties negative return lines together on a shared bus rail to simplify multi-channel field wiring.

Q: Does the T9831 termination assembly provide internal channel-to-channel galvanic isolation?

A: No, the T9831 features a non-isolated input structure where signal isolation must be provided externally by isolated field transmitters or barrier modules if required by system design.

Field Installation Guidelines

1. Mount the T9831 assembly securely onto the enclosure cabinet DIN rail or chassis plate using the integrated mounting brackets.
2. Verify that field wiring is de-energized prior to connecting 4-20 mA or voltage analog signal loops to the screw terminal blocks.
3. Terminate signal cable shields to the designated enclosure earth ground rail, avoiding multiple ground loops along non-isolated field lines.
4. Connect the multi-pin interface cable from the T9831 assembly to the corresponding Trusted input module backplane connector and lock retention screws.