Allen-Bradley 1790D-0V16 24V DC 16 Sinking Output Module

Product Overview

The Allen-Bradley 1790D-0V16 is a 24V DC 16-point sinking output module designed for use in base and expansion configurations. This discrete output unit provides reliable control for industrial automation applications, offering 16 nonisolated sinking outputs. With its robust design and clear status indicators, it simplifies troubleshooting and enhances system uptime. The module supports sinking outputs where Com 0 and Com 2 connect to field power (+) 24V DC, while Com 1 and Com 3 connect to field power (-) GND. Note that all Com 0 and Com 2 terminals are internally connected.

Technical Specifications Breakdown

Key parameters for the 1790D-0V16 are listed below for quick reference:

Industry Applications

This module is well-suited for discrete manufacturing lines where reliable sinking output control is critical. For example, it can drive solenoid valves, indicator lights, and small relays in assembly stations. In packaging machinery, the 16 outputs allow simultaneous control of multiple actuators, reducing wiring complexity. The 0.5 ms off-to-on delay ensures fast response in high-speed sorting applications. By using the 1790D-0V16, engineers can achieve consistent on-state voltage at 24V DC nom, minimizing voltage drop issues common in long cable runs.

Installation & Setup Guidance

When installing the module, ensure field power is within the 10…28.8V DC range. Connect Com 0 and Com 2 to field power (+) 24V DC, and Com 1 and Com 3 to field power (-) GND. Use the 37-pin D-shell connector for wiring. Verify that the total output current per common does not exceed 4.0 A. The green status indicators provide immediate visual feedback for each channel, simplifying commissioning.

Maintenance & Reliability

Periodically inspect the module for dust accumulation on the connector and ensure ambient temperature stays within the unspecified operating range. The photocoupler isolation (1250V ac rms) protects logic circuits from field transients, enhancing long-term reliability. No specific maintenance intervals are provided; follow standard industrial practices.

Compatibility & Integration

The 1790D-0V16 integrates with Allen-Bradley base and expansion systems using DeviceNet power. It communicates via the 37-pin D-shell connector. The module is compatible with sinking output configurations as described. For system integration, consult the controller documentation for proper addressing and configuration.

Selection Guide & Purchasing Advice

When selecting this module, verify that your system requires 16 sinking outputs with 0.5A per channel and 4.0A per common. For availability and lifecycle status, contact AutoDCSTech. They can confirm stock and recommend alternatives if needed.

Troubleshooting & Common Issues

If an output fails to energize, check the field power voltage (10…28.8V DC) and verify that the corresponding green status indicator is lit. If the indicator is off, the output may be in an off state or the channel may be damaged. For multiple outputs failing, inspect the common connection and ensure the total current per common is below 4.0 A. If the module does not power up, verify DeviceNet power (11…28.8V DC) and check the 37-pin connector for bent pins.