Allen-Bradley 1746 Series: Versatile I/O Modules for Industrial Automation
The Allen-Bradley 1746 series, a core component of Rockwell Automation’s SLC 500 control system, encompasses a comprehensive portfolio of analog and
digital I/O modules engineered to meet the diverse needs of industrial automation and process control applications. Designed for seamless integration with SLC
500 processors (such as the 1747-L5x series) and 1746 chassis, these modules serve as the critical interface between the control system and field devices,
enabling reliable data acquisition, precise signal control, and efficient equipment actuation across manufacturing, energy, petrochemical, and logistics sectors.
Across all variants, the 1746 series prioritizes industrial-grade durability and operational flexibility. Modules are built with high-strength engineering plastics and
corrosion-resistant internal components to withstand harsh conditions, with operating temperature ranges spanning from -20°C to 75°C (depending on the
model) and IP20 enclosure ratings for cabinet-mounted protection against dust and debris. The series also supports scalable system expansion: users can mix
and match 1746 modules within a single chassis and extend to up to 30 I/O modules via expanded cabinets, while compatibility with RSLogix 500 programming
software streamlines configuration and real-time status monitoring. Additionally, advanced models feature predictive diagnostics and overcurrent protection,
reducing unplanned downtime and ensuring continuous operation in demanding industrial environments.
Key Advantages of 1746-NI4
For connectivity and integration, the 1746-NI4 mounts directly into the Allen Bradley 1746 SLC chassis, leveraging the chassis backplane for power and
communication with the SLC 500 processor. It features removable terminal blocks for easy field wiring, with each channel’s positive, negative, and common
terminals clearly labeled to simplify installation and reduce wiring errors. The module also includes built-in diagnostic capabilities: status LEDs on the front panel
indicate power presence (PWR LED), channel-specific signal validity (CH LEDs), and system faults, enabling maintenance technicians to quickly identify issues
such as open circuits, overrange signals, or power failures without extensive troubleshooting.
Durability and reliability are hallmarks of the 1746-NI4, with a rugged design built to withstand the harsh conditions of industrial settings. It offers 1500V AC
RMS of isolation between channels and between channels and the backplane, protecting the module and connected PLC from ground loops, voltage spikes, and
cross-channel interference. The module’s enclosure meets IP20 ratings, shielding internal components from dust and debris when installed in a standard
control cabinet, and it supports a vibration resistance of 2g (5-150Hz) and shock resistance of 30g (11ms duration), ensuring uninterrupted operation in high-
vibration environments like factory floors or heavy machinery facilities.
Key Advantages of 1746-NIO4V
Durability and electrical protection are key hallmarks of the 1746-NIO4V, tailored for the harsh conditions of industrial settings. The module provides 1500V AC
RMS of isolation between input/output channels and between channels and the SLC chassis backplane, safeguarding both the module and the connected PLC
from ground loops, voltage spikes, and cross-channel interference that can disrupt operations or damage equipment. Its enclosure meets IP20 protection
ratings, shielding internal components from dust and debris when installed in a standard control cabinet. Additionally, the module is built to withstand industrial
environmental stresses, with vibration resistance of 2g (5–150Hz) and shock resistance of 30g (11ms duration), ensuring uninterrupted performance in high-
vibration environments like factory floors, heavy machinery facilities, and process plants.
Key Advantages of 1746-NO4I
The Allen Bradley 1746-NO4I analog output module delivers a suite of impactful advantages that make it a standout choice for industrial automation and
process control applications within the SLC 500 PLC ecosystem. First and foremost, it offers exceptional signal precision: equipped with 12-bit digital-to-analog
(D/A) conversion across its four isolated output channels, the module ensures accurate voltage and current signal regulation (supporting ranges like ±10V DC
and 4-20mA) with a maximum total unadjusted error of just ±0.4% of full scale at 25°C and a low temperature coefficient of ±50 ppm/°C, maintaining reliable
performance even as environmental temperatures fluctuate between -40°C and 70°C. Its robust electrical isolation is another critical benefit—providing 1500V
AC RMS isolation between channels and between channels and the SLC chassis backplane, it effectively shields the module and connected PLC from ground
loops, voltage spikes, and cross-channel interference, mitigating equipment damage and signal disruption in harsh industrial settings. For integration and
maintenance, the 1746-NO4I excels with its plug-and-play compatibility with 1746 SLC chassis, removable clearly labeled terminal blocks that streamline field
wiring and reduce installation errors, and intuitive front-panel status LEDs that instantly indicate power presence, channel activity, and system faults, enabling
technicians to diagnose issues like overrange outputs or driver failures in minutes without extensive downtime. Additionally, its ruggedized design—boasting
IP20 enclosure protection, 2g (5–150Hz) vibration resistance, and 30g (11ms) shock resistance—ensures uninterrupted operation on factory floors, heavy
machinery sites, and process plants, while seamless compatibility with RSLogix 500 software allows for flexible configuration of output ranges, calibration, and
fault thresholds, tailoring the module to meet the unique demands of diverse industrial control workflows.
Other hot-selling items
