Allen-Bradley 1790D-T0V32 - High-Density 32-Point Sinking Output Module

Control a large array of devices efficiently with the Allen-Bradley 1790D-T0V32. This powerful ArmorBlock base module delivers an impressive 32 sinking (NPN) digital outputs on a single DeviceNet node. Designed for applications requiring many control points, it features easy screw-terminal wiring, per-point status LEDs, and robust 0.5A switching capability per channel. It's the ultimate solution for high-density output control in packaging, material handling, and assembly systems.

Complete Technical Specifications

Brand & Series: Allen-Bradley ArmorBlock (1790 Series)

Full Model Number: 1790D-T0V32

Module Type: 32-Point Sinking (NPN) DC Output Base Module

Output Configuration: 32 points, non-isolated, sinking

Output Current: 0.5 A maximum per point, 4.0 A maximum per common group

Load Voltage Range: 10V to 28.8V DC (24V DC Nominal)

Switching Speed: Turn-ON delay: 0.5 ms max, Turn-OFF delay: 1.0 ms max

Field Power Supply: 24V DC (10V to 28.8V DC range)

DeviceNet Logic Power: 24V DC (11V to 28.8V DC)

Electrical Isolation: 1250V AC RMS (Photocoupler isolation between I/O and logic)

Wiring Connection: Screw Terminal Block (M3.0, 7 lb-in maximum torque)

Common Groups: 16 points per common (2 independent groups: COM1, COM2)

Status Indicators: 32 individual Green LEDs (one per output)

Network Data Size: Consumes 4 bytes of output data, Produces 1 byte of input data (for status).

Wire Compatibility: Copper or copper-clad aluminum conductors.

Installation & Wiring Guide

Mount the 1790D-T0V32 module on a DIN rail. Connect your 24V DC field power supply. For sinking outputs, wire one side of your load (e.g., an indicator lamp) to the positive (+) of your field power. Connect the other side of the load to the module's output terminal. When activated, the output sinks current to ground, completing the circuit. Crucially, balance your loads so that the total current for each 16-point common group (COM1 or COM2) does not exceed the 4.0 Amp limit.

Package & Warranty

What's Included: 1 x Allen-Bradley 1790D-T0V32 Sinking Output Base Module with terminal block.

Our Guarantee: This high-density module is covered by a reliable 12-month warranty.

Fast Shipping Service

We ship quickly worldwide using FedEx, UPS, and DHL.

Frequently Asked Questions (FAQ)

What is the main benefit of such a high channel count?

It consolidates control, reducing the number of DeviceNet nodes, IP addresses, and physical modules to purchase, wire, and configure. This lowers cost and simplifies system architecture for machines with dozens of actuators.

How do I manage the 4.0A limit per common group?

Plan your wiring by dividing your 32 devices into two logical groups of 16. Ensure the sum of the current draw of all devices in Group 1 (using COM1) is ≤4.0A, and similarly for Group 2 (using COM2).

Can I use this module as a standalone unit?

Yes, it can function as a standalone 32-output node. As a "Base" module, it also has the capability to have additional "Expansion" I/O modules attached to it to form a block with mixed I/O types.

What does the 1 byte of input data represent?

The single input byte typically provides module-wide status information, such as a communication health flag or a summary fault bit, rather than individual channel status (which is shown by the LEDs).

Is it suitable for driving small relays directly?

Absolutely. With a 0.5A capacity, it can directly drive the coils of many small industrial relays, PLC input cards, or pilot lights, making it perfect for interposing and logic expansion.

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