Yokogawa AMM11 Analog Input Multiplexer Module

The Yokogawa AMM11, also cataloged as the AMM11 Input Multiplexer Module, operates as a dedicated hardware component for high-density analog signal processing and field signal routing within Yokogawa CENTUM VP and CENTUM CS 3000 systems.

Hardware Specifications

Yokogawa Channel-to-Channel Isolation & Signal Conditioning

The AMM11 module integrates 64 isolated channels designed to multiplex differential voltage and current loop signals before analog-to-digital processing. Channel-to-channel isolation prevents ground loop currents between field sensors and internal backplane logic. The module conditions 4-20 mA HART loop protocol and -10 V to +10 V inputs, filtering high-frequency noise and suppressing common-mode interference prior to routing data across the CENTUM backplane.

Frequently Asked Questions

Q: How does the AMM11 handle signal conditioning across its 64 channels simultaneously?

A: The AMM11 utilizes internal solid-state multiplexing switches combined with isolation circuitry to sequentially sample field signals while maintaining dielectric isolation between channels and system ground.

Q: What power bus draw does the AMM11 exert on the rack backplane?

A: The module draws a maximum power consumption of 3.5 W from the internal backplane supply rail during full 64-channel operation.

Field Installation Guidelines

Mount the AMM11 input multiplexer module securely into its assigned I/O slot on the CENTUM system baseplate until the locking mechanism fully engages. Wire field signal cables through compatible terminal blocks, maintaining strict separation between 4-20 mA current loops, voltage signal pairs, and high-voltage AC conductors within cabinet wire ducts. Ground signal cable shields at a single point on the enclosure earth bus bar to eliminate ground loop voltage differentials across long cable runs.