The 1746-IV32 is a high-density 24V DC input module for the SLC 500 platform. This module delivers thirty-two discrete input channels for your control system. It groups these channels into four isolated banks of eight points each. This design simplifies wiring and troubleshooting for engineers. The module installs directly into any SLC 500 chassis slot. You can also use it in local, extended, or distributed I/O racks. This flexibility makes it a versatile choice for system expansion.
Expert Technical Evaluation & Performance Review
The 1746-IV32 offers a fast signal delay of just 3 milliseconds for both ON and OFF states. This ensures your system responds quickly to field device changes. Each input channel operates within a 15 to 30 Volt DC range at 50°C. At higher temperatures of 60°C, the range adjusts to 15-26.4V DC. This thermal stability is critical for reliable operation in warm environments. The module draws only 0.05 Amps from the 5V DC backplane. This low power consumption helps you manage your chassis power budget effectively.
The module provides robust electrical isolation for system protection. It features a 1500V AC isolation barrier tested for one minute from the backplane. This prevents ground loops and protects sensitive processor components. The inputs have a minimum ON-state voltage of 15.0V DC. They also have a maximum OFF-state voltage of 5.0V DC with a leakage current of only 1.5 mA. This clear switching threshold ensures accurate signal detection every time. The nominal input current is 5.1 mA at 24V DC, which is standard for industrial sensors.
Environmental ruggedness is a key feature of this Allen-Bradley module. It operates reliably within a temperature range of 0 to 60 degrees Celsius. The module also withstands storage temperatures from -40°C to +85°C. It is designed to resist vibration up to 2.5G at frequencies from 57 to 200Hz. The unit can also handle operational shocks of up to 30G without damage. These ratings ensure long-term performance in demanding factory floor conditions. The module holds UL, C-UL, and CE certifications for global compliance.
Deep-Dive Technical FAQ
What is the channel grouping and fusing configuration for the 1746-IV32? This module has 32 inputs organized into four groups of eight channels each. Series A, B, and C modules include a non-replaceable electronic fuse per group. Each group fuse is rated at 2.5 Amperes for overcurrent protection. Series D modules do not have internal group fusing.
What is the total heat dissipation for the module during operation? The maximum heat dissipation per input point is 0.20 Watts. The aggregate heat dissipation for the entire module is 6.65 Watts. This thermal output requires you to consider adequate ventilation in your cabinet. Proper airflow ensures the module stays within its operating temperature range.
Can this module be used in a hazardous location environment? Yes, the 1746-IV32 is UL listed for Class I, Division 2, Groups A, B, C, and D. This certification allows installation in specific hazardous locations. You must follow all local electrical codes for safe installation and use. The module also provides NEMA ICS 2-230 noise immunity for reliable operation.
Logistics & Standard Packaging Details
Each order for the 1746-IV32 includes the following standard package components:
- One (1) Allen-Bradley 1746-IV32 SLC 500 Discrete Input Module
- One (1) Removable Terminal Block (RTB) for wiring connections
- One (1) Product Documentation and Installation Guide sheet
We ensure fast and reliable shipping for all orders. We ship this module via trusted carriers for express delivery. You can choose FedEx, UPS, and DHL for your shipping needs. This ensures you receive your critical automation component quickly.
