Allen-Bradley 1790D-T32BV0 24V DC 32 Universal Input Base Module

Product Introduction

When your automation system demands flexible and reliable input handling, the Allen-Bradley 1790D-T32BV0 delivers. This 24V DC 32 universal input base module is part of the CompactBlock LDX family and provides 32 points that can be configured for sinking or sourcing operation. Engineered for industrial environments, it simplifies wiring and reduces panel space while maintaining high performance. Whether you are upgrading a legacy system or building a new control network, this module offers the versatility you need.

Technical Specifications Breakdown

The 1790D-T32BV0 features 32 input points organized into four commons of 16 points each, with non-polarity wiring for easy installation. Each input accepts a nominal 24V DC signal with an on-state voltage range of 9.6V DC minimum to 28.8V DC maximum, and an off-state voltage of 5.0V DC maximum. The on-state current is 8 mA maximum per channel at 28.8V DC, and the input impedance is 4.8 kΩ. For power, the base module requires 24V DC nominal with a voltage range of 11…28.8V DC, and dissipates only 1.2 W maximum at 28.8V DC. Isolation between I/O and logic is provided via photocoupler with an isolation voltage of 1250V AC rms, while DeviceNet to logic and DeviceNet power are nonisolated. The module includes 32 green input status indicators for quick diagnostics.

Industry Applications

This input module excels in discrete manufacturing, packaging, material handling, and assembly lines where multiple sensor inputs must be monitored reliably. For example, in a bottling plant, the 1790D-T32BV0 can handle 32 proximity or limit switch signals, reducing wiring complexity through its 16-point commons. Its wide voltage range and sinking/sourcing flexibility make it suitable for both 24V DC sensor families, simplifying inventory and installation.

Installation & Setup Guidance

Mount the 1790D-T32BV0 on a DIN rail or panel using the integrated mounting holes. Connect the DeviceNet power and I/O wiring using the terminal block with M3.0 screws, tightening to a maximum torque of 7 lb-in. Use copper or copper-clad aluminum conductors for reliable connections. Configure the module for sinking or sourcing inputs as needed; no polarity concerns simplify field wiring. Ensure the supply voltage stays within 11…28.8V DC to maintain proper operation.

Maintenance & Reliability

With a maximum power dissipation of only 1.2 W, the 1790D-T32BV0 runs cool and extends component life. The photocoupler isolation protects against voltage transients, reducing downtime. Periodically inspect the terminal block connections for tightness and verify the green input status indicators respond correctly. No routine calibration is required, making this module a low-maintenance choice for continuous operation.

Compatibility & Integration

The 1790D-T32BV0 integrates seamlessly with DeviceNet networks, receiving power and communication through the base module. It works with Allen-Bradley controllers such as CompactLogix, ControlLogix, and PLC-5 via DeviceNet scanners. The nonisolated DeviceNet interface simplifies network wiring, while the 16-point commons reduce cable counts. For mixed I/O systems, pair this input module with compatible output modules in the same CompactBlock LDX family.

Selection Guide & Purchasing Advice

Before ordering, confirm your system requires 32 universal inputs with DeviceNet connectivity. Verify the supply voltage range (11…28.8V DC) matches your power source. The 1790D-T32BV0 is available now at BluePLC Industrial, your trusted supplier for Allen-Bradley automation components. Contact our team for current lifecycle status and availability. For complete technical specifications, please contact BluePLC Industrial.