YOKOGAWA ATI3S-S00 Terminal Analog I/O Module

Configured for combined analog signal termination and conditioning in ProSafe-RS Safety Instrumented Systems, the YOKOGAWA ATI3S-S00 (ATI3S Terminal Analog I/O Module) provides direct physical/electrical execution. The unit handles both analog input measuring circuits and analog output driving loops, terminating current and voltage signals between field instrumentation and safety system controllers. By processing bidirectional field signals through unified termination channels, the module executes continuous analog data conversion with low thermal load and fast signal loop update rates.

Hardware Specifications

Channel-to-Channel Isolation & Loop Protocols

Engineered for process safety architectures, the ATI3S-S00 integrates dedicated channel-to-channel isolation barriers to block common-mode voltage spikes and eliminate circulating ground loops across field circuits. The analog signal processing interface maintains full compatibility with 4-20 mA HART loop protocol pass-through, permitting direct device diagnostics without interrupting safety execution. Onboard cold junction compensation (CJC) processing algorithms and active analog filtering stabilize measurement channels during temperature fluctuations, protecting central processing logic against field-side electrical interference.

Frequently Asked Questions

Q: How does the ATI3S-S00 maintain channel integrity when both analog inputs and outputs are wired to the same module?

A: The module uses galvanic isolation barriers between individual channels and the system backplane, ensuring that output loop currents do not cross-talk into sensitive analog input measurement circuits.

Q: What are the backplane power supply considerations during maximum analog loop load?

A: The ATI3S-S00 draws operational power directly from the subrack backplane rail, capping maximum power consumption at 3 W to reduce thermal buildup inside high-density safety instrumented cabinets.

Field Installation Guidelines

Mount the ATI3S-S00 securely into its designated subrack slot before applying system power, verifying that top and bottom retention fasteners latch properly to establish a continuous earth ground link with the enclosure frame. Always power down the local rack segment before module insertion or removal to prevent electrical arc damage across backplane connectors.

Route field wiring for analog voltage and current loops in grounded instrument conduits physically separated from high-voltage AC mains and motor control leads. Ground individual cable shields at a single system reference ground terminal to eliminate ground loop currents. Maintain proper wire bend radii at terminal blocks to ensure mechanical strain relief on conductor terminations.