Yokogawa AMM52T Output Multiplexer Module

Description

Configured for analog output multiplexing in CENTUM VP systems, the Yokogawa AMM52T provides direct electrical execution of 4-20 mA DC signals across multiple channels.

Hardware Specifications

• Model: AMM52T

• Brand: Yokogawa

• Origin: Japan

• Weight: Not specified

• Dimensions: Not specified

• Operating Temp: Not specified

• Power Consumption: ≤4 A at 5.0 V DC

• Output Signal: 4-20 mA DC

• Output Resistance: ≥500 kΩ

• Allowable Load Resistance: 0-750 Ω

• Output Range: 1.0-21.5 mA DC

• Output Voltage Limit: ≤25.5 V DC

• Signal Insulation: Non-insulated between system-field and channels

• Data Update Period: 1 s

• Accuracy Rating: ±48 µA

• Effect of Ambient Change: ±32 µA per 10 deg C

• Installation: I/O module nest

• Wiring: M4 screw terminal connection

4-20 mA HART Loop Protocol

The AMM52T maintains compatibility with standard 4-20 mA HART loop protocol, ensuring deterministic signal transmission across distributed control environments. Channel-to-channel insulation is not implemented, requiring system-level grounding strategies to mitigate interference. The module’s design supports integration with FOUNDATION Fieldbus and Profibus PA networks when paired with appropriate interface hardware.

Frequently Asked Questions (FAQ)

Q: Does the AMM52T support hot-swap replacement? A: The module is designed for installation in an I/O nest. Hot-swap capability is not specified; power-down procedures are recommended before replacement.

Q: What is the impact of backplane current draw on system capacity? A: The AMM52T consumes ≤4 A at 5.0 V DC. System planners must account for cumulative current draw across multiple modules to avoid exceeding backplane limits.

Q: Can redundant configurations be applied to AMM52T outputs? A: Redundancy is achievable at the system level by pairing modules, but the AMM52T itself does not provide internal redundancy switching.

Field Installation Guidelines

• Mount the module securely into the designated I/O nest slot.

• Use M4 screws to connect wiring to the terminal block, ensuring torque compliance with standard industrial practice.

• Maintain shield grounding at a single point to reduce noise coupling.

• Route signal cables separately from high-voltage lines to minimize electromagnetic interference.

• Verify ambient temperature stability; compensate for ±32 µA drift per 10 deg C change in precision applications.