Description

Yokogawa AMM31 Advanced Measurement Module

The Yokogawa AMM31, also cataloged as the AMM31 AdvancedMeasurementModule, operates as a dedicated hardware component for precise optical position and speed measurement within process control networks.

Hardware Specifications

Parameter	Specification
ModelBrand	Yokogawa AMM31
Origin	Japan
Weight	0.2 kg (6.1 oz)
Dimensions	12.7 cm x 2.5 cm x 20.3 cm (5.0" x 1.0" x 8.0")
OperatingTemp	Industrial range suitable for harsh environments
PowerConsumption	Standard optical encoder supply, optimized for incremental and absolute signal outputs
Shaft	Through hollow shaft, up to 10 mm (0.394")
Mounting	Frameless, compact, and bearingless design
Interfaces	Wide selection of incremental and absolute interface options

Process Control Features

• Supports 4-20 mA HART loop protocol for analog signal integration.
• Compatible with FOUNDATION Fieldbus and Profibus PA connectivity.
• Channel-to-channel isolation ensures minimal electrical interference.
• Cold junction compensation (CJc) available for precision temperature-independent measurements.

Frequently Asked Questions

Q: Does the AMM31 support hot-swap replacement?
A: The module is designed for fixed installation; hot-swap is not supported.

Q: What are the electrical isolation characteristics?
A: Channel-to-channel isolation limits cross-interference, suitable for standard industrial signal levels.

Q: Can firmware updates be applied in the field?
A: Firmware compatibility is maintained via standard optical encoder protocols; field upgrades must follow manufacturer procedures to prevent signal disruption.

Field Installation Guidelines

1. Ensure the mounting surface is clean and free from debris before installation.
2. Align the hollow shaft precisely with the mating drive to avoid mechanical stress.
3. Shield signal wiring and connect to a common grounding point to reduce electromagnetic interference.
4. Maintain recommended cable bend radius and separation from power lines.
5. Verify incremental/absolute interface connections per system specification before powering the module.

Specifications

• Brand: Yokogawa

Advantages

• High reliability in industrial environments
• Supports continuous operation
• Compatible with major PLC/DCS systems