Allen-Bradley 1790D-TN0V2 2-Channel Analog Voltage Output Module

Product Overview

When you need precise analog voltage control in a compact DeviceNet-based system, the Allen-Bradley 1790D-TN0V2 delivers. This 2-channel analog voltage output module provides a 0-10V output range with 12-bit resolution, making it suitable for controlling actuators, valves, and other voltage-driven devices. As part of the Allen-Bradley 1790D series, it integrates seamlessly into existing automation architectures.

Technical Specifications

The 1790D-TN0V2 offers two single-ended, nonisolated output channels. Each channel provides 0-10V output with 12-bit resolution (1/4096 max, 2.44 mV/bit). Conversion time is 2 ms per channel, and overall accuracy is 0.2% of full scale over 0-55°C. The module uses binary data conversion with a range of 0000 to 0fff (max scale). Minimum allowable external output load resistance is 1 KΩ, and maximum output impedance is 0.5 Ω. Insulation resistance is 20 MΩ min at 250V DC between insulated circuits.

DeviceNet power supply voltage is 24V DC nominal with a range of 11-28.8V DC. Power dissipation is 1.2 W max at 28.8V DC. Field power supply voltage is 24V DC nominal with a range of 21.6-26.4V DC (+10%). Power dissipation is 1.5 W max at 26.4V DC. Isolation includes photocoupler isolation for I/O to logic, with a type test isolation voltage of 1250V AC rms for 60 seconds. DeviceNet to logic and field power are nonisolated. Indicators include two red/green I/O status LEDs. Wiring uses a terminal block (M3.0) with a screw torque of 7 lb-in max (use copper or copper-clad aluminum conductors).

Industry Applications

The 1790D-TN0V2 is ideal for applications requiring precise voltage control, such as regulating variable frequency drives, positioning servo valves, or setting speed references for conveyors. In process industries, it can control proportional valves or setpoints for temperature controllers. Its 0-10V output is standard for many industrial actuators, making it a versatile choice for upgrades or new installations.

Installation & Setup Guidance

Mount the 1790D-TN0V2 on a DIN rail in a clean, dry enclosure. Ensure the DeviceNet power supply is within the 11-28.8V DC range and the field power is within 21.6-26.4V DC. Use copper or copper-clad aluminum conductors and tighten the terminal block screws to 7 lb-in max. The module can accommodate a maximum of two discrete expansion modules. Verify wiring polarity and isolation requirements before powering up.

Maintenance & Reliability

The 1790D-TN0V2 requires no calibration, reducing maintenance overhead. Periodic inspection of connections and indicators is recommended. Keep the module free from dust and moisture. The photocoupler isolation protects against voltage spikes, enhancing reliability in industrial environments. For long-term reliability, ensure the ambient temperature stays within 0-55°C.

Selection Guide & Purchasing Advice

When selecting the 1790D-TN0V2, verify that your system uses DeviceNet communication and requires 0-10V analog output. Confirm the power supply voltages match the module's requirements. For complete technical specifications, contact BluePLC Industrial. We offer genuine Allen-Bradley products with fast shipping and expert support.