Technical Specifications
Product Model | 1444-DYN04-01RAManufacturer | Rockwell Automation / Allen-BradleyProduct Type | 4-Channel Dynamic Measurement & Condition Monitoring ModuleSeries | Dynamix 1444Number of Dynamic Inputs | 4 × Differential, IEPE/ICP 2 mA–20 mA excitation (typ. 4 mA)A/D Converter | 24-bit Delta-Sigma per channelMax Sample Rate | 50 kS/s per channel (synchronized or independent)Speed / Keyphasor Inputs | 2 × TTL-compatible (0–30 kHz)Digital Inputs | 2 × Isolated digital inputsBuffered Outputs | 4 × Buffered analog outputs (raw sensor signal)Alarm Relay Output | 1 × SPDT Form C, 5 A @ 250 V AC / 30 V DCCommunication Interface | Dual-port EtherNet/IP (10/100 Mbps), supports DLR & linear topologyPower Supply | 18–32 V DC (nominal 24 V DC), typical 9 WOperating Temperature | -25 °C to +70 °C (-13 °F to +158 °F)Certifications | CE, UL listed, CSA, IECEx Ex ec nC IIC T4 GcRequired Terminal Base | 1444-TB-A (main module base)
Main Features and Advantages
The Allen-Bradley 1444-DYN04-01RA combines laboratory-grade signal conditioning with industrial-grade ruggedness, making it an ideal choice for both new installations and retrofits of critical rotating machinery monitoring systems. Its 24-bit resolution and simultaneous sampling capability across all four channels ensure phase-accurate vibration data—essential for orbit plots, shaft centerline analysis, and cross-channel comparison in turbomachinery applications.Integrated EtherNet/IP connectivity eliminates the need for proprietary data acquisition chassis. The module publishes waveform, spectrum, and overall (RMS/Peak/Crest Factor) data directly to a ControlLogix® or CompactLogix™ controller, reducing system complexity and improving time synchronization across distributed assets. The dual-port switch enables daisy-chaining or redundant ring (DLR) networks, minimizing cabling cost while increasing network availability.Synchronous Keyphasor input allows 1×, 2×, and fractional order tracking relative to machine speed, a critical feature for variable-speed drives and start-up / coast-down analysis. Buffered outputs give maintenance teams access to unfiltered raw signals for connection to portable diagnostic instruments without interrupting online monitoring.Alarm flexibility is another strong point: the onboard SPDT relay can be driven by any configured measurement (overall vibration, gap voltage, etc.), and the module can be expanded via the 1444-RELX00-04RB relay expansion to provide multi-level alert / danger voting schemes. Because configuration is stored in non-volatile memory, the Allen-Bradley 1444-DYN04-01RA continues to monitor and trip locally even if Ethernet communications are temporarily lost—a key requirement for machinery protection systems per API 670guidelines.Wide operating temperature range, DIN-rail mounting with pluggable terminal blocks, and hazardous-area approval make the Allen-Bradley 1444-DYN04-01RA suitable for deployment in power plants, petrochemical facilities, pulp & paper mills, and heavy manufacturing environments where reliability cannot be compromised.
Application Field
The Allen-Bradley 1444-DYN04-01RA is primarily deployed in industries where early detection of mechanical degradation—bearing wear, imbalance, misalignment, looseness, or rub—is critical to avoiding unplanned downtime and catastrophic failure. Typical assets monitored include centrifugal compressors, steam and gas turbines, large induced/forced draft fans, pumps, gearboxes, and reciprocating compressors.In power generation and oil & gas facilities, the Allen-Bradley 1444-DYN04-01RA is often used as part of a turbomachinery protection system measuring radial vibration via eddy-current probes and thrust position via axial probe inputs, with Keyphasor reference for slow-roll vector subtraction and phase reference. In process industries, it monitors bearing housing acceleration on pumps and mixers to trigger preventive maintenance work orders before secondary damage occurs.The module also finds application in OEM skid-mounted equipment where compact footprint, EtherNet/IP native communication, and integration into the customer’s existing Rockwell control platform are prioritized. By consolidating dynamic measurement, speed referencing, and alarm relay functions into a single rack-mounted module, the Allen-Bradley 1444-DYN04-01RA reduces panel space, wiring, and lifecycle cost compared to discrete vibration transmitters and separate data acquisition hardware. Whether used for compliance with machinery protection standards or as the data source for a PlantPAx® asset management strategy, the module provides the fidelity and determinism required for serious condition-based monitoring programs.
Related Products
- 1444-TB-A — Terminal base required for mounting the 1444-DYN04-01RA main module; provides spring or screw terminal options.
- 1444-TB-B — Terminal base for relay expansion modules in the same Dynamix 1444 backplane.
- 1444-RELX00-04RB — 4-channel relay expansion module; up to three units can be connected to a 1444-DYN04-01RA system for multi-stage alarm/trip schemes.
- 1444-DYN02-01RA — Two-channel version of the dynamic measurement module for smaller machines or lower channel-count applications.
- 1440-TB-A / 1440-TB-B — Legacy-series terminal bases (some sites cross-use; verify compatibility with your 1444 chassis).
- 1756-EN2T — EtherNet/IP communication module commonly used in ControlLogix racks paired with the 1444-DYN04-01RA for centralized data collection.
- Studio 5000 Logix Designer — Rockwell software required to configure the 1444-DYN04-01RA, set alarm thresholds, and map data tags.
- 9309-MPHSIZE — FactoryTalk® AssetCentre / Machine Analytics add-on for higher-level vibration trending and reporting when used with the 1444-DYN04-01RA.
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