1444-DYN04-01RA is the main measurement module in the Allen-Bradley Dynamix 1444 condition-monitoring platform. Four dynamic input channels accept IEPE accelerometers, eddy-current probe signals or voltage inputs, while two dedicated speed inputs support machine-reference measurements.

The module combines measurement processing, buffered signal access and EtherNet/IP communication. One onboard SPDT control relay is provided, and relay expansion modules can extend the local alarm-output arrangement when required by the monitoring strategy.

• Acquires four dynamic measurement channels for vibration and related machine-condition signals.
• Supplies compatible IEPE transducers and supports eddy-current probe and voltage signal configurations.
• Accepts two speed-reference inputs for order, phase and rotational measurement functions.
• Provides four buffered outputs for access to the conditioned channel signals.
• Communicates measurement, status and configuration data over EtherNet/IP.
• Operates one onboard SPDT relay and supports as many as three four-relay expansion modules.

• Mount the main module and any expansion modules on properly grounded DIN rail in the documented enclosure environment.
• Connect SELV 18 to 32 V DC power and preserve the redundant-supply arrangement where the installation uses both inputs.
• Configure each dynamic channel for its actual transducer type, sensitivity, bias behavior and engineering units.
• Keep buffered-output and sensor cables routed for low-noise condition-monitoring signals.
• Record the EtherNet/IP address, controller connection, alarm setpoints, relay logic and tachometer configuration before exchange.
• Validate channel bias, speed reference, measurement values and relay actions after commissioning.

• Maintain the complete 1444-DYN04-01RA catalog number because the main measurement module and its expansion units have different roles.
• Archive the Dynamix configuration and controller integration before replacing an installed module.
• Preserve the physical channel-to-transducer map; similar sensors can require different power and scaling settings.
• Match optional relay expansion quantity and local-bus order to the existing alarm design.
• Confirm supported module firmware and Add-On Profile versions in the Rockwell engineering environment before service.