Yokogawa ASI133-H00/ATSA3S Analog Input Module – Product Description

Overview

The Yokogawa ASI133-H00/ATSA3S is a high-precision analog input module designed for safety-critical industrial automation. It acquires signals from field transmitters, such as temperature, pressure, flow, and level sensors, converting them into digital data for Yokogawa ProSafe‑RS SIS systems. Moreover, its compact rack-mounted design supports strong isolation, redundancy, and diagnostics, ensuring continuous operation in SIL-compliant environments.

Technical Specifications

Electrical & I/O

• Number of Channels: 16 analog input channels

• Input Signal Types: 4–20 mA DC (standard) or 1–5 V DC (optional)

• Resolution: 16-bit A/D conversion

• Accuracy: ±0.1% of full scale

• Input Impedance: Current mode ~250 Ω, Voltage mode ≥1 MΩ

• Isolation: Channel-to-channel and channel-to-system

• Power Supply: 24 V DC via backplane

Performance & Diagnostics

• Response Time: ≤10 ms per channel for real-time acquisition

• Noise Immunity: High resistance to EMI and electrical noise

• Diagnostics: LED indicators for channel and module status

• Redundancy: Supports dual-redundant configuration for fault tolerance

Mechanical

• Mounting: Rack-mounted in ProSafe‑RS backplane

• Dimensions (W × H × D): 130 × 130 × 32 mm

• Weight: 0.3–0.5 kg

• Cooling: Natural convection

• Protection: IP20

Communication & Integration

• Interface: Proprietary Yokogawa safety bus

• Compatibility: Fully compatible with ProSafe‑RS SIS architecture

• Configuration: Managed via Yokogawa safety engineering tools

Environmental & Compliance

• Operating Temperature: 0 °C to +55 °C

• Storage Temperature: −20 °C to +70 °C

• Relative Humidity: 5–95% non-condensing

• Certifications: CE, UL, CSA, IEC 61508 SIL2/SIL3 compliant

• Origin: Japan

FAQ

Q1: How many input channels does the ASI133-H00 support?
It supports 16 isolated analog input channels for safety-critical monitoring.

Q2: What signal types are compatible with this module?
It accepts 4–20 mA DC signals and optionally 1–5 V DC analog signals.

Q3: Is it suitable for SIL-compliant systems?
Yes, it is SIL2/SIL3 compliant and designed for safety instrumented systems.

Q4: Can it operate in redundant configurations?
Yes, the module supports dual-redundant operation for enhanced reliability.

Q5: Which systems is it compatible with?
It integrates seamlessly with Yokogawa ProSafe‑RS SIS safety systems.