Expert Technical Evaluation & Performance Review
The 1771-CFM module offers a configurable interface for turbine flowmeters and magnetic pickups. It accepts input signals from 50 mV to 200 V AC peak and TTL-compatible 4-40 V DC. This wide range ensures compatibility with Bently 3300 proximity pickups.
Each of the four input channels handles frequencies up to 100 kHz. The module processes each channel in 1.3-5 ms and outputs four digital signals at 5-40 V DC. Operators configure the device in four distinct modes.
Available modes include non-resettable totalizer, resettable totalizer, high-resolution frequency, and direction sensing. The maximum count value ranges from 0 to 9,999,999 and is fully programmable. This flexibility supports precise flow and shaft speed calculations.
The unit dissipates between 2 and 13 Watts and draws 1.0 Amp max from the backplane. It operates at 0-60°C and stores at -40-185°F. Conformal coating protects the board against harsh environments.
Engineers appreciate the diagnostic information sent directly to the PLC processor. This data simplifies troubleshooting and reduces downtime. The module’s scan time aligns with high-speed automation requirements.
Product Procurement & Buyer Guide
Procurement managers select the 1771-CFM for its direct replacement capability with 1771-QRC and 1771-QRD modules. No ladder logic changes are needed. This simplifies upgrades and conserves PLC memory.
The module fits one slot of a PLC-5 chassis and uses the 1771-WN wiring arm. Its weight is 1.9 lbs and dimensions are 3.5 x 6.5 x 2.0 inches. These specifications ensure easy integration into existing racks.
Industries such as power generation, oil and gas, automotive, food and beverage, and pipelines benefit from this module. It works with any TTL pulse source and single-channel shaft encoders. Operators can trust the module for daily flow metering tasks.
When ordering, specify the catalog number 1771-CFM and confirm the backplane current rating. The unit requires user-supplied DC power for its outputs. Verify your system’s voltage range before installation.
Logistics & Standard Packaging Details
Express delivery is available worldwide via FedEx, UPS, and DHL. All shipments include tracking and insurance options.
