1771-CFM Allen Bradley Configurable Flow Meter Module

Product Description

The Allen Bradley 1771-CFM is a configurable flow meter module for the PLC-5 programmable logic controller system. It processes signals from magnetic pickups and compatible proximity pickups, including Bently Nevada 3300 series 5 mm and 8 mm pickups. The module provides four digital input channels and four digital outputs, occupies one chassis slot, and features a conformal coating for protection against corrosive environmental contaminants.

Technical Specifications

Signal Handling and I/O Configuration

The 1771-CFM accepts signals from magnetic pickups and specified proximity pickups for flow measurement applications. The input signal range and pickup type should match the connected sensor. The listed compatibility with Bently Nevada 3300 series 5 mm and 8 mm proximity pickups identifies supported pickup types, but does not establish compatibility with every sensor in those series.

The four digital outputs operate at 5-40 V DC and require a user-supplied power source. Confirm the output load requirements and field wiring arrangement before connecting external devices.

Chassis and Wiring

The module occupies one slot in the PLC-5 chassis and uses the 1771-WN wiring arm for field connections. Its maximum backplane current is 1.0 A, which should be considered when checking the chassis power budget. The specified module scan time is 1.3-5 ms; this is a module timing specification and should not be treated as the total PLC control-loop response time.

The conformal coating provides a protective layer against corrosive contaminants. It does not establish a specific environmental protection rating or permit operation beyond the module's verified environmental limits.

Frequently Asked Questions

Q: Which sensors can the 1771-CFM accept?

A: The supplied specifications identify magnetic pickups with signals from 50 mV to 200 V AC peak, TTL-compatible inputs, and Bently Nevada 3300 series 5 mm and 8 mm proximity pickups. Verify the electrical output characteristics of the selected pickup before connection.

Q: What power supply do the digital outputs require?

A: The four digital outputs operate at 5-40 V DC, with power supplied by the user. The supplied information does not specify individual output-current ratings or maximum load current.

Q: Which wiring arm is specified for this module?

A: The specified wiring arm is the 1771-WN. The module occupies one chassis slot, and the available data does not establish hot-swapping support.

Other Attributes

• Series: Allen-Bradley ControlLogix
• Country of Origin:  USA
• Lead Time: In Stock, 2 Working Days

In Stock Hot Items of Allen Bradley

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