Allen-Bradley 1440-VLF02-01RA XM-21 Dynamic Measurement Module | Replacement, Equivalent & Selection Guide
The Allen-Bradley 1440-VLF02-01RA is a high-precision XM-21 Dynamic Measurement Module designed for continuous vibration monitoring and dynamic signal acquisition in industrial automation systems. This module integrates seamlessly into Rockwell Automation’s XM Series platform, providing real-time machinery health data for predictive maintenance and condition monitoring applications.
Technical Specifications
- Part Number: 1440-VLF02-01RA
- Series: XM-21 Dynamic Measurement Module
- Manufacturer: Allen-Bradley / Rockwell Automation
- Input Channels: 2 dynamic (AC) input channels
- Input Type: Voltage / IEPE (ICP) compatible sensors
- Frequency Range: 0.5 Hz – 20 kHz
- Measurement Parameters: Overall vibration (RMS, Peak, Peak-to-Peak), waveform, spectrum
- Communication: DeviceNet (integrated XM bus)
- Power Supply: 18–30 VDC (via XM bus)
- Operating Temperature: 0°C to +60°C
- Protection Rating: IP20
- Mounting: DIN rail
- Dimensions (W×H×D): Approx. 35 × 120 × 115 mm
- Weight: Approx. 200 g
- Certifications: CE, UL, cUL
Compatible Replacement & Equivalent Models
When the 1440-VLF02-01RA is unavailable or requires a cost-effective alternative, the following models offer compatible functionality:
- 1440-VLF02-01RB – Revised hardware revision of the same XM-21 platform; direct drop-in replacement in most installations.
- 1440-DYN02-01RJ (XM-120) – Enhanced dynamic measurement module with expanded frequency range; suitable for high-speed machinery.
- 1440-VST02-01RA (XM-320) – Dual-channel vibration/speed/temperature module; ideal when multi-parameter monitoring is required.
- 1440-ACNR0-04RXXX (XM-440) – Master trip module with integrated relay outputs; suitable for safety-critical shutdown applications.
- Emerson CSI 6500 ATG – Third-party equivalent for multi-channel vibration monitoring; compatible with open-protocol SCADA systems.
- Bently Nevada 3500/42M – Industry-standard vibration monitor; equivalent performance for rotating machinery protection.
Note: Always verify firmware compatibility and XM bus configuration before substituting modules. Contact Konmask technical support for cross-reference validation.
Why Choose the Original Model
- Native XM Bus Integration: Plug-and-play compatibility with Allen-Bradley XM Series chassis — no additional gateways required.
- Studio 5000 / RSLogix 5000 Native Support: Full AOI (Add-On Instruction) library support for rapid commissioning.
- Proven Field Reliability: Widely deployed in oil & gas, power generation, and heavy manufacturing for over a decade.
- Rockwell FactoryTalk Integration: Seamless data flow into FactoryTalk AssetCentre and FactoryTalk Historian.
- Regulatory Compliance: Meets API 670 machinery protection standards for critical rotating equipment.
Typical Applications
- Rotating machinery vibration monitoring (pumps, compressors, turbines, motors)
- Predictive maintenance and condition-based monitoring programs
- Machinery protection systems in oil & gas upstream/downstream facilities
- Power plant turbine and generator monitoring
- Cement, mining, and heavy process industry equipment health monitoring
- HVAC and large fan/blower systems in commercial facilities
System Compatibility
- PLC/Controller: ControlLogix (1756 series), CompactLogix (1769 series)
- Network: DeviceNet, EtherNet/IP (via 1440-ACNR gateway)
- Software: RSLogix 5000 / Studio 5000 v20+, XM Configuration Utility
- Chassis: 1440-ACNR0-04RXXX XM Series expansion chassis
- Sensors: IEPE/ICP accelerometers (100 mV/g typical), voltage-output proximity probes
- SCADA: FactoryTalk View SE/ME, Ignition (via OPC-UA bridge)
Selection Guide
Use the following criteria to select the correct XM-21 variant or alternative:
- Channel Count: 1440-VLF02-01RA provides 2 dynamic channels. For 4-channel needs, consider the XM-320 (1440-VST02-01RA).
- Frequency Range: Standard 0.5–20 kHz covers most rotating machinery. High-speed applications (>20 kHz) require the XM-120 (1440-DYN02-01RJ).
- Sensor Type: Confirm IEPE/ICP vs. voltage-output sensor compatibility before ordering.
- Network Protocol: DeviceNet native; EtherNet/IP requires an additional gateway module.
- Relay/Trip Output: If hardwired shutdown relay is required, upgrade to XM-440 (1440-ACNR0-04RXXX).
- Budget Consideration: For non-critical monitoring, third-party equivalents (Emerson CSI, Bently Nevada) may offer lower TCO.
Quality Assurance & Sourcing
- All units sourced from authorized distributors or verified surplus channels with full traceability documentation.
- Each module undergoes incoming inspection: visual check, label verification, and functional power-on test where applicable.
- Original factory packaging preserved where available; anti-static packaging used for all shipments.
- Certificate of Conformance (CoC) and test reports available upon request.
- Warranty: 12 months from date of shipment against manufacturing defects.
- Lead time: In-stock units ship within 1–3 business days; sourced units 7–21 business days.
How to Order
- Step 1: Confirm part number: 1440-VLF02-01RA and required quantity.
- Step 2: Submit RFQ via support@konmask.com or add to cart directly.
- Step 3: Receive quotation with lead time, pricing, and availability confirmation within 24 hours.
- Step 4: Approve proforma invoice and arrange payment (T/T, PayPal, or credit card accepted).
- Step 5: Module ships with packing list, CoC, and tracking number.
For urgent requirements or large-volume orders, contact us directly at +0086 19859288691.
Replacement & Compatibility FAQ
Q: Is 1440-VLF02-01RB a direct replacement for 1440-VLF02-01RA?
A: In most cases, yes. The -01RB is a hardware revision update. Verify firmware version compatibility in your XM Configuration Utility before swapping.
Q: Can I use this module without an XM Series chassis?
A: No. The 1440-VLF02-01RA requires an XM bus chassis (e.g., 1440-ACNR0-04RXXX) for power and communication. Standalone operation is not supported.
Q: Does this module support EtherNet/IP directly?
A: No. Native communication is DeviceNet. EtherNet/IP connectivity requires a gateway module such as the 1440-ACNR0-04RXXX configured as a bridge.
Q: What sensors are compatible with the 1440-VLF02-01RA?
A: IEPE/ICP-type accelerometers (typically 100 mV/g sensitivity) and voltage-output proximity probes. Confirm sensor output range against module input specifications.
Q: Can Konmask provide a tested/refurbished unit?
A: Yes. Tested surplus units are available with functional verification reports. Please specify your requirement in the RFQ.
Q: What is the lead time for new stock?
A: In-stock units ship within 1–3 business days. For sourced or factory-new units, lead time is typically 7–21 business days depending on availability.
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Contact: support@konmask.com | +0086 19859288691
