YOKOGAWA AI-917-00 Analogue Input Module

The YOKOGAWA AI-917-00 serves as the primary AI-917 Analogue Input Module utilized to execute multi-channel analog signal acquisition and data conversion across Yokogawa control platforms. The single Eurocard format hardware features four analog input channels and four analog output channels, supporting 0-20 mA current loops and 0-10 V voltage ranges with 10-bit resolution.

Hardware Specifications

4-20 mA HART Loop Protocol and Channel-to-Channel Isolation

The AI-917-00 architecture provides structured signal isolation to maintain data integrity when interfacing with 4-20 mA HART loop protocol transmitters and 0-10 V field devices. Integrated 10-bit Analog-to-Digital (A/D) converters sample incoming signal levels against a stable reference, while digital signal conditioning suppresses high-frequency line noise. Channel-to-channel isolation principles isolate current and voltage loops, preventing ground potential differences from corrupting converted 8-bit serial data transmitted across the system backplane.

Frequently Asked Questions

Q: What is the physical mounting standard and backplane connector format for the AI-917-00 module?

A: The module is built in a single Eurocard 4TE form factor (160 x 100 x 20 mm) and connects to the backplane via a 48-pin DIN 41612 Bauform F connector.

Q: What resolution and conversion accuracy does the AI-917-00 provide for current and voltage inputs?

A: The module operates with 10-bit resolution (1024 steps across 21.6 mA or 10.8 V) and delivers an overall measurement accuracy of +/-0.2% +/-1 bit.

Q: How are local diagnostics and measurement values displayed on the module front panel?

A: A two-row LCD display shows numeric values on the first row and alphanumeric characters on the second row, supplemented by programmable LED status indicators.

Field Installation Guidelines

De-energize the rack backplane power supply before inserting or removing the AI-917-00 module from the card cage. Align the PCB edge with the Eurocard card cage guide rails and slide the module smoothly until the 48-pin DIN 41612 Bauform F connector seats fully into the mating backplane receptacle. Tighten front panel retaining screws to ensure chassis earthing continuity. Route all 0-20 mA current loop and 0-10 V voltage wiring using shielded cables, grounding the shielding braid at a single earth point on the cabinet earthing bar. Maintain separation between low-level analog wiring and high-voltage AC conductors.