ICS Triplex T9432 Analog Input Module

The ICS Triplex T9432, also cataloged as the T9432 Analog Input Module, operates as a dedicated hardware component for high-integrity 4 to 20 mA signal acquisition within safety instrumented systems.

Hardware Specifications

Triple Modular Redundancy and Galvanic Isolation

The module supports Simplex, Dual, and Triple Modular Redundancy (TMR) 2oo3 safety architectures to guarantee high availability and fault-tolerant process execution. Each of the 16 input channels incorporates +/-1.5 kV DC galvanic isolation to withstand transient common-mode voltages and protect internal safety logic. Built-in line monitoring detects open-circuit and short-circuit faults between 0 mA and 3.8 mA or above 22.0 mA, while supporting HART Command 03 digital communications across the operational 3.8 mA to 22.0 mA range without compromising safety integrity.

Frequently Asked Questions

Q: What are the line monitoring fault thresholds for the analog input channels?

A: Fault states for open-circuit or low current are triggered between 0 mA and 3.8 mA, while over-range or high current faults occur above 22.0 mA, with normal operation restricted to 3.8 mA to 22.0 mA.

Q: Does the T9432 module support redundant system architectures?

A: Yes, the hardware supports Simplex, Dual, and Triple Modular Redundancy (TMR) configurations to meet high-availability safety instrumented system requirements.

Q: What is the measurement resolution and sampling interval of the module?

A: The module features a 15-bit resolution with a least significant bit of 0.98 uA and a sampling update interval of 6 ms under unadjusted filter conditions.

Field Installation Guidelines

• Ensure chassis power is fully isolated before installing or removing the T9432 module from the safety rack backplane.

• Verify that ambient cabinet operating temperatures remain within the -20 deg C to +60 deg C specification envelope.

• Terminate field signal wiring using shielded twisted-pair cables, ensuring proper grounding to minimize electromagnetic interference across the 16 isolated channels.

• Confirm correct backplane slot alignment and secure retention latches to maintain reliable power distribution and redundant communication paths.