Product Overview
The Allen-Bradley 1790D-T16BV0 is a universal DC input base block from the CompactBlock LDX series. It delivers 16 input channels that accept both sinking and sourcing signals at 24V DC, making it a versatile building block for diverse industrial control systems. Whether you are upgrading an existing panel or designing a new machine, this module provides reliable signal acquisition in a compact form factor.
Key Features
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16 Inputs – Supports both sink and source wiring configurations for maximum flexibility.
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Wide Voltage Tolerance – Accepts 9.6V DC minimum, 24V DC nominal, and 28.8V DC maximum on-state input voltage.
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Low Off-State Current – Only 1.5 mA at 5V DC, minimizing leakage and improving signal integrity.
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High Current Capacity – Each channel handles up to 8 mA at 24V DC, suitable for most field devices.
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Rugged Design – Operates from 0 to 60 °C, withstands 30 g peak shock, and 5 g vibration at 10–500 Hz.
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Built-in Indicators – 16 green LEDs provide clear visual status for each input.
Technical Specifications
| Parameter |
Value |
| Manufacturer |
Allen-Bradley |
| Product Line |
CompactBlock LDX |
| Part Number |
1790D-T16BV0 |
| UPC |
612598279197 |
| Weight |
3.00 lbs (1.36 kg) |
| Number of Inputs |
16 |
| Input Type |
24V DC Sink/Source |
| On-State Voltage Range |
9.6V DC min, 24V DC nom, 28.8V DC max |
| Off-State Voltage |
5V DC max |
| On-State Current |
8 mA max per channel @ 28.8V DC |
| Off-State Current |
1.5 mA @ 5V DC |
| Input Impedance (nominal) |
4.8 kΩ |
| Indicators |
16 green LED status indicators |
| Common Type |
8 points / 8 COM (non-polarity) |
| Operating Temperature |
0 to 60 °C |
| Operating Shock |
30 g peak |
| Vibration |
5 g @ 10–500 Hz |
| Humidity |
5–90% non-condensing |
| DeviceNet Power Supply |
24V DC nominal, 11–28.8V DC range |
| Power Dissipation |
1.2 W max @ 28.8V DC |
| Isolation (I/O to Logic) |
Photocoupler isolation, 1250V AC RMS |
| DeviceNet to Logic |
Non-isolated |
| DeviceNet Power |
Non-isolated |
| Wiring |
Terminal block (M3.0), 7 lb-in max torque (use copper or copper-clad aluminum conductors) |
Applications
This input block suits a wide range of industrial automation tasks. Use it for machine control, process monitoring, and material handling systems where discrete 24V DC sensors, limit switches, and proximity detectors need to be wired efficiently. Its sink/source capability simplifies integration with both PLC and DCS architectures.
Installation & Setup
Mount the 1790D-T16BV0 on a standard DIN rail or panel. Connect the 24V DC supply to the DeviceNet power terminals, observing the 11–28.8V DC range. Wire each input channel to your field device using the M3.0 terminal block; tighten screws to a maximum of 7 lb-in. Ensure conductors are copper or copper-clad aluminum. The non-polarity common design allows flexible wiring without worrying about polarity.
Maintenance & Reliability
Routine inspection of the terminal connections and input wiring prevents loose connections and signal errors. The module’s robust construction—with its wide temperature range and shock/vibration tolerance—ensures long-term reliability in demanding environments. Periodically check the input status LEDs to verify proper operation.
Selection Guide
When ordering, verify the part number 1790D-T16BV0 and confirm your system’s voltage and wiring requirements. This module is available at PLC Source PRO, a trusted supplier of industrial automation spare parts. Ensure your order includes any necessary cables or connectors for your specific application.