Yokogawa AMM31 CENTUM Analog Multiplication Module

Product Overview

The Yokogawa AMM31 serves as a specialized computing module within the CENTUM Distributed Control System (DCS) framework. It performs high-precision analog multiplication of two independent input signals ($X$ and $Y$) to generate a real-time product output ($Z$). This hardware-level computation proves essential for applications involving power calculations, flow compensation, and complex ratio controls where digital processing latency must remain at a minimum. We supply this component as 100% Brand New and original, ensuring factory-calibrated accuracy for your mission-critical control loops.

Technical Specifications

The AMM31 delivers deterministic analog computing performance with a robust frequency response.

• Model: Yokogawa AMM31

• Functional Logic: Analog Multiplication 

• Input Voltage Range (X, Y): ±10 V DC

• Output Voltage Range (Z): ±10 V DC

• Multiplication Accuracy: ±0.5% of full scale (typical)

• Frequency Response: DC to 1 kHz (minimum)

• Supply Voltage: ±15 V DC (±5%)

• Operating Temperature: 0 to 60 °C

• Dimensions: Approximately 30 x 130 x 130 mm

• Weight: Approx. 300 g

• Condition: 100% Brand New and Original

Engineering Advantages

The AMM31 addresses specific industrial signal processing challenges through dedicated analog hardware:

• Elimination of Digital Processing Lag: By performing multiplication in the analog domain, this module provides an instantaneous response with a frequency bandwidth up to 1 kHz. This avoids the "scan-time" delays inherent in CPU-based software calculations, which is vital for high-speed surge control or vibration monitoring.

• Superior Signal Linearity: Integrated circuit precision maintains a ±0.5% accuracy across the entire ±10V range. This ensures that the output signal remains reliable even at the low or high extremes of the input scale, preventing drift in sensitive compensation loops.

• Standardized System Integration: The 30 mm width and standard CENTUM form factor allow for seamless installation into existing I/O nests. It utilizes the standard ±15V DC power bus, eliminating the need for specialized external power supplies.

• Industrial Thermal Resilience: The module operates consistently between 0 and 60 °C. This thermal range facilitates deployment in standard control rooms or field-mounted cabinets without requiring specialized localized cooling systems.

FAQs

How does the AMM31 handle inputs that exceed the ±10V range?

The module operates strictly within the ±10V DC window. Exceeding these limits saturates the output or potentially damages the precision analog multiplier circuit. We recommend installing signal limiters if your field transmitters might spike beyond the rated voltage.

What is the primary maintenance requirement for this module?

As a high-precision analog device, we recommend a periodic calibration check of the zero and span points. Ensure the cabinet environment remains within the non-condensing humidity range to prevent signal leakage across the high-impedance inputs.

Can I use the AMM31 for division or other math functions?

The AMM31 hardware is optimized specifically for multiplication. While some analog circuits can be reconfigured for division, this specific Yokogawa module provides a fixed multiplication architecture for the CENTUM platform.

Does the module provide galvanic isolation?

The AMM31 typically shares a common ground with the ±15V system power. For applications requiring total galvanic isolation between field signals and the system bus, you should pair this module with an isolated signal conditioner.