Yokogawa ACM12 Communication Module – Product Description

Overview

The Yokogawa ACM12 is a high-performance communication module designed for ProSafe‑RS safety instrumented systems (SIS) and CENTUM VP distributed control systems (DCS). It provides reliable interfacing between field devices and safety/control systems. Moreover, the compact, rack-mounted design supports robust isolation, redundancy, and diagnostics, making it suitable for mission-critical industrial environments. Therefore, it is ideal for oil & gas, petrochemical, chemical, power generation, and water treatment applications.

Technical Specifications

Electrical & I/O

• Channels: 12 analog communication channels

• Signal Types: 4–20 mA DC (current), 0–10 V DC (voltage)

• Resolution: 12–16 bit A/D and D/A conversion

• Accuracy: ±0.1% of full scale (typical)

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

• Power Supply: 24 V DC via system backplane

Performance

• Response Time: ≤10 ms per channel

• Noise Immunity: High resistance to electrical noise and EMI

• Diagnostics: LED indicators for channel and module status

• Reliability: Continuous operation in safety-critical applications

Communication & Integration

• Interface: Proprietary Yokogawa bus for ProSafe‑RS SIS and CENTUM VP DCS

• Protocols Supported: Modbus RTU/TCP, Yokogawa proprietary

• Redundancy: Supports dual-redundant configurations

• Configuration: Managed via Yokogawa engineering tools

Mechanical

• Mounting: Rack-mounted in system backplane

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

• Weight: 0.5 kg

• Protection: IP20

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, ATEX (depending on configuration)

• Origin: Manufactured in Japan

FAQ

Q1: How many channels does the ACM12 module support?
The ACM12 module provides 12 analog communication channels for field device integration.

Q2: Which signal types are supported?
It supports current inputs/outputs of 4–20 mA and voltage inputs/outputs of 0–10 V DC.

Q3: Can the module operate in redundant configurations?
Yes, the ACM12 supports dual-redundant configurations for fault-tolerant safety operations.

Q4: Is the module compatible with ProSafe‑RS and CENTUM VP systems?
Yes, it integrates seamlessly with Yokogawa ProSafe‑RS SIS and CENTUM VP DCS systems.

Q5: What diagnostics are available?
LED indicators display the status of both the module and individual channels for maintenance efficiency.