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Allen‑Bradley ControlLogix Config Flowmeter Module
Allen‑Bradley ControlLogix Config Flowmeter Module - Image 2
Allen‑Bradley ControlLogix Config Flowmeter Module - Image 3

Allen‑Bradley ControlLogix Config Flowmeter Module

Manufacturer: Allen‑Bradley
Module: ControlLogix Config Flowmeter Module
Backplane current draw at 5.1V: 300 mA
Backplane current draw at 24V: 25 mA

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Product Description

The ControlLogix configurable flowmeter module (CFM) is an intelligent I/O module that performs high-speed flow metering for industrial applications. The CFM module is a single-slot module that interfaces between a Logix controller and external I/O devices.

Standard Features

The 1756-CFM reduces wiring complexity while providing μs-resolution timestamping for batch process synchronization.

  • Multi-protocol Input: Handles pulse (0-10kHz), 4-20mA HART, or discrete signals
  • Embedded Flow Calculation: AGA/API standard algorithms (e.g., AGA-3, AGA-7)
  • HART Pass-Through: Bidirectional diagnostics with HART-enabled flowmeters
  • Hot-Swappable: Supports replacement in redundant chassis without downtime
  • Time Synchronization: 1μs timestamp resolution via IEEE 1588 PTP
  • SIL 3 Compliance: IEC 61508 certified for safety-critical applications
  • Advanced Diagnostics: Cable break detection, sensor health monitoring

Technical Specifications

Model

Temperature, surrounding air, max

Total backplane power

inputs

outputs

1756-CFM/B,

1756-CFMK/B

60 °C (140 °F)2.13W

12…24V DC

12/24V operation: 10…31.2V DC

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