Allen-Bradley 1746-NO4I SLC 500 4-Channel Analog Output Module

Allen-Bradley 1746-NO4I SLC 500 Analog Current Output Module

Disponibilidad: 10 Quedan en stock

The Allen-Bradley 1746-NO4I is a high-resolution, 4-channel analog output module engineered for the SLC 500 programmable logic controller system. This...

Código: 1746-NO4I

Manufacturer: Allen-Bradley
Product No.: 1746-NO4I
Product Type: Analog Output Module
Product Origin: USA
Payment:T/T, Western Union
Weight: 200g
Shipping port: Xiamen
Warranty: 12 months

Descripción Reseñas

The Allen-Bradley 1746-NO4I is a high-resolution, 4-channel analog output module engineered for the SLC 500 programmable logic controller system. This module provides four independent current output channels, specifically designed for industrial control applications requiring precise current signals between 0 and 20 mA.

Features

Four dedicated analog current output channels.
14-bit digital-to-analog resolution for high-precision control.
Supports 0 to 20 mA or 4 to 20 mA output ranges.
Galvanic backplane isolation ensures signal integrity and system protection.
Fast dynamic response times suitable for demanding process loops.
Compatible with standard 1746 chassis architectures.

Technical Specifications

Model	1746-NO4I
Channels	4 Current Output
Output Range	0 to 20 mA
Resolution	14-bit
Backplane Current (5V DC)	55 mA
Backplane Current (24V DC)	195 mA
Operating Temperature	0 to 60 degC
Storage Temperature	-40 to 85 degC
Isolation Rating	500V DC (Field to Backplane)

Installation Guidelines

Ensure the SLC 500 chassis power is disconnected before inserting or removing the module to prevent electrical damage.
Use shielded Belden #8761 cable or equivalent to maintain signal integrity and reduce EMI/RFI interference.
Maximum wire size for terminal connections is #14 AWG.
Ensure proper grounding of the cable shield at the signal source or destination, per standard industrial practices.
Maintain adequate ventilation within the enclosure to keep ambient temperatures within the 0 to 60 degC operating range.

Applications

The 1746-NO4I is widely utilized in process automation environments, including water treatment facilities for valve and pump control, chemical processing for PID-based pressure and temperature regulation, and HVAC systems for damper positioning. Its high-resolution output makes it suitable for driving VFDs and other current-controlled field devices.

FAQ

What is the primary function of the 1746-NO4I?

This module serves as an analog output interface for the SLC 500 series, converting digital data from the processor into four independent 0-20 mA current signals for field instrumentation.

Is this module isolated?

The 1746-NO4I provides galvanic isolation between the field wiring and the backplane, rated up to 500V DC.

What is the maximum load resistance for the output channels?

The output circuits are designed to support a load resistance range of 0 to 500 ohms.

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