Product Details
Overview
The Allen-Bradley 1746-NO4I is a precision analog output module designed for SLC 500 PLC systems. It provides four independent analog output channels with high-resolution 14-bit conversion, fast update time, and reliable current output for industrial control applications.
Technical Specifications
-
Model / Part Number: 1746-NO4I
-
Brand: Allen-Bradley
-
Product Type: Analog Output Module / SLC 500 Module
-
Number of Outputs: 4 independent channels
-
Output Current Range: 0 to +20 mA
-
Full Scale Output: 21 mA
-
Overrange Capability: 5% (0 to +21 mA minus 1 LSB)
-
Current Output Coding: 0 to +32764
-
Resolution: 14 bits
-
Update Time: 512 microseconds
-
Step Response Time: 2.5 milliseconds
-
Backplane Current: 5 V: 55 mA, 24 VDC: 195 mA
-
Weight: 1.0 lbs (0.45 kg)
-
Series: SLC 500
Application Scenarios
-
Precision control of actuators and valves in process automation
-
Signal generation for analog control loops in SLC 500 PLC networks
-
Industrial monitoring systems requiring fast analog output response
-
Replacement or expansion of existing Allen-Bradley SLC 500 analog outputs
Comparison with Similar Models
-
1746-NO4I vs 1746-NO4V: The NO4I provides isolated analog outputs with 14-bit resolution, while the NO4V offers voltage outputs for systems needing 0–10 V control signals.
-
SLC 500 Analog Modules: NO4I is optimized for fast response and high-precision current control, suitable for critical loop applications.
FAQs
Q1: What is the maximum update speed for the outputs?
The 1746-NO4I has an update time of 512 microseconds per channel, enabling rapid analog signal changes.
Q2: Can this module be used in existing SLC 500 racks?
Yes, it is fully compatible with standard SLC 500 backplanes and requires only the specified backplane current.
Q3: What is the resolution and accuracy of the output?
The module features 14-bit resolution, providing precise current outputs with minimal error over the full 0–20 mA range.
Additional Information
- 100% Genuine Parts: All products are original and authentic, ensuring reliable industrial performance.
- 30-Day Refund Guarantee: Return any in-stock item within 30 days in original, unopened packaging for a full refund (excluding shipping and fees).
- 12-Month Warranty: Covers defects in materials or workmanship; excludes misuse, normal wear, or unauthorized modifications.
- Worldwide Shipping: We ship via USPS, UPS, FedEx, and DHL. Delivery times vary by country and may be subject to customs or import fees.
- Support & Contact: Technical and warranty assistance is available anytime. Contact us here: Contact.
- Purchase Guidance: Check product specifications and compatibility carefully before ordering to ensure proper application.
Tech & Buying Guide
Mastering Modern Industrial Joystick Controls in Heavy Automation
Industrial joysticks play a pivotal role in human-machine interaction across heavy material handling and mobile hydraulics. These tactile controllers translate complex operator movements into precise electrical signals for PLCs, motion controllers, and DCS networks. Consequently, selecting and installing the right joystick architecture ensures operator safety, reduces fatigue, and optimizes equipment performance.
Navigating Industrial Automation Failures: Types, Causes, and Mitigation Strategies
Modern manufacturing relies heavily on automated control systems to maximize throughput and maintain product quality. However, unplanned downtime in industrial automation can cost facility operators thousands of dollars per hour. Understanding how programmable logic controllers (PLCs), distributed control systems (DCS), and field instrumentation fail empowers engineering teams to implement robust preventive maintenance strategies.
Essential Motion Control Commands: A Practical Guide for Engineers
Automation engineers often rely on precise position and speed control to drive modern factory machinery. Modern industrial systems, such as Programmable Logic Controllers (PLCs) and Distributed Control Systems (DCS), depend heavily on standardized motion instructions. Mastering these commands ensures operational safety, protects mechanical components, and optimizes cycle times across production lines.