Secure analog I/O package IS220YAICS1AL

GE IS220YAICS1AL is a safety analog I/O package (YAIC) of the Mark VIeS series, focusing on analog signal acquisition and conditioning at SIL2/3 safety level.

It is compatible with the safety circuits of critical industrial controls such as gas turbines and supports combination with multiple safety terminal boards.

Achieve high-precision analog quantity access and secure isolation. The following are the core information and technical details:

I. Core Positioning and Basic Attributes

Project parameters

Model IS220YAICS1AL (often written as IS220YAICS1A, where L is the suffix for batch/version)

Brand GE Vernova

Series Mark VIeS (Security Enhanced Type)

Type Safety Analog I/O Pack (Safety Analog I/O Pack)

Safety level SIL2/3 compatible

Redundancy supports simplex/TMR (Triple Module Redundancy)

The matching terminal boards include IS200STAIS1A/2A, IS400STAIS1A/2A, IS200/400TBAIS1C, etc

Communication IONet Ethernet, real-time interconnection with UCSC/UCSB controllers

Ii. Key Technical Specifications

Channel capability:

16 channels of high-precision analog input, supporting industrial standard signals such as 4-20mA, 0-20mA, 0-10V, and ±10V.

Accuracy and resolution:

16-bit AD conversion, accuracy ±0.05%, reading ±0.01%, range, 1500V AC isolation between channels, strong anti-interference ability.

Power supply and environment:

24V DC power supply, power consumption approximately 6W; Operating temperature: 0-60℃, humidity: 5%-95%, no condensation.

Safety features:

Channel-level fault diagnosis, open circuit/short circuit detection, support for fault-safe output and voting logic of safety circuits.

Iii. Core Functions and Applications

Safety simulation acquisition:

Adjust the analog signals from on-site sensors (such as pressure, temperature, and displacement), convert them into digital quantities that the controller can read, and adapt to safety-critical circuits.

Isolation and protection:

Achieve electrical isolation between the on-site side and the logic side to prevent surge/overvoltage damage to the control system and ensure the stability of the safety circuit.

Fault diagnosis:

Real-time monitoring of channel status, diagnosis of faults such as open circuit, short circuit, and drift, triggering safety responses, and enhancing system availability.

Typical applications:

safety-related analog quantity access scenarios such as safety shutdown circuits for gas turbines, safety monitoring of fuel flow/pressure, and overspeed protection for steam turbines.

Iv. Selection and Supporting Tips

Terminal board matching:

Select the corresponding safety terminal board based on the signal type (such as thermocouple, 4-20mA). For TMR configuration, 3 sets of I/O packages + 3 sets of terminal boards are required.

Signal adaptation:

Configure channels based on sensor type (current/voltage) to avoid over-range use.

Version distinction:

Distinguished from IS220PAICH1A (non-secure PAIC Analog I/O package), YAIC focuses on secure loops, while PAIC is adapted to non-secure analog control.

V. Core Advantages

High security:

SIL2/3 compatible, meeting the compliance requirements of safety-critical scenarios.

High precision:

16-bit resolution + high isolation, ensuring the accuracy and stability of signal acquisition.

Easy integration:

Compatible with the Mark VIeS ecosystem, adapted to UCSC controllers and IONet networks, and supports upgrades of new and old systems.