CL6821X1-A5 43B5797X032 | Emerson | Fisher PROVOX Analog I/O Module

Overview

The Emerson CL6821X1-A5 (43B5797X032) is an analog input/output module developed for the Fisher PROVOX DCS system. Designed for precision signal acquisition and control, it provides four analog input channelsand four analog output channels, making it suitable for handling both process monitoring and control functions.

This module supports standard analog signal ranges, including 4–20 mA and 0–10 V, ensuring compatibility with transmitters, actuators, and control valves. It features a 16-bit resolution for high signal accuracy and includes isolation circuitry for protection against electrical noise. Compact in size and easy to mount on a DIN rail or within a PROVOX rack, the CL6821X1-A5 ensures reliable performance in demanding process environments.

Key Features

• Model Number: CL6821X1-A5

• Part Number: 43B5797X032

• Manufacturer: Emerson

• System Compatibility: Fisher PROVOX DCS

• Type: Analog Input/Output Module

• Inputs/Outputs: 4 analog inputs and 4 analog outputs

• Signal Types: 4–20 mA and 0–10 V analog ranges

• Resolution: 16-bit precision for accurate data acquisition

• Signal Isolation: Built-in isolation to minimize interference

• Installation: DIN rail or rack-mounted

• Design: Compact form for optimized cabinet space

Technical Specifications

• Operating Voltage: 24 VDC nominal

• Input Channels: 4 analog

• Output Channels: 4 analog

• Resolution: 16-bit

• Operating Temperature: -20°C to +60°C

• Dimensions: 27.9 cm × 5.1 cm × 25.4 cm

• Weight: 0.48 kg

• Mounting: Standard PROVOX I/O chassis installation

Applications

The CL6821X1-A5 is ideal for analog control and monitoring in:

• Oil & Gas: Interface with transmitters and modulating valves for process regulation

• Power Generation: Control turbine actuators and record analog feedback signals

• Chemical Processing: Manage flow, pressure, and temperature measurements

• Pharmaceuticals: Support validated analog process control and dosing operations

• Water & Wastewater: Handle pump control, tank level, and flow measurement applications

Its combined analog input/output functionality simplifies wiring, reduces the number of installed modules, and improves overall system efficiency.

FAQ

Q1: Which control system is this module designed for?
A1: It is built for use in the Fisher PROVOX DCS system, not the DeltaV platform.

Q2: What type of signals does it support?
A2: It supports standard analog signals such as 4–20 mA and 0–10 V.

Q3: How many channels does it include?
A3: The module offers four analog inputs and four analog outputs.

Q4: Is the module isolated?
A4: Yes, it includes isolation for both inputs and outputs to ensure stable signal transmission.

Q5: What industries commonly use this module?
A5: It is used in oil & gas, chemical, pharmaceutical, and water treatment industries