Allen-Bradley 1790D-TN0V2 2 Ch Analog Output

1790D-TN0V2 Analog Voltage Output Module

Key Technical Specifications

The 1790D-TN0V2 module provides two single‑ended, nonisolated outputs. Each channel generates a 0‑10V signal. Resolution reaches 12 bits, which equals 1/4096 of full scale. That translates to 2.44 mV per bit. Converted data uses binary format from 0000 to 0fff at maximum scale.

Conversion time is 2 ms per channel. Overall accuracy stays within 0.2% of full scale across 0‑55°C. You do not need any calibration. The allowable external load resistance must be at least 1 KΩ minimum. Output impedance measures 0.5 Ω maximum. Insulation resistance reaches 20 mΩ minimum at 250V dc between insulated circuits.

Additionally, the 1790D-TN0V2 requires a DeviceNet power supply of 24V dc nominal. Its voltage range runs from 11 to 28.8V dc. Power dissipation max is 1.2W at 28.8V dc. Field power supply also needs 24V dc nominal, with a range of 21.6‑26.4V dc (+10%). Field power dissipation max reaches 1.5W at 26.4V dc.

Isolation and Indicators

I/O to logic uses photocoupler isolation. Isolation voltage is type‑tested at 1250V ac rms for 60 seconds. DeviceNet to logic is nonisolated. Field power is also nonisolated. Two red/green I/O status indicators help you monitor operation easily.

Mechanical and Environmental Data

The terminal block uses M3.0 screws. Maximum screw torque is 7 lb‑in. Use only copper or copper‑clad aluminum conductors. This analog base module can accommodate a maximum of two discrete expansion modules.

Installation Guidelines

First, ensure field power matches 21.6‑26.4V dc. Next, connect the load resistance of at least 1 KΩ to each output channel. Then, wire the DeviceNet power supply between 11‑28.8V dc. Finally, tighten terminal screws to 7 lb‑in maximum. Do not exceed this torque value.

Moreover, keep the module away from moisture and excessive vibration. The operating temperature range is 0‑55°C. For best results, use shielded cables to reduce electrical noise. Remember that the 1790D-TN0V2 is nonisolated from DeviceNet and field power. Therefore, proper grounding is essential.

Why Choose This Analog Output Module

This module offers fast 2ms conversion per channel. Its 12‑bit resolution gives you precise voltage control. Since it requires no calibration, you save setup time. The ability to add two discrete expansion modules makes it flexible for small to medium systems.

Furthermore, the 1790D-TN0V2 works well in industrial automation, HVAC, and test equipment. It integrates easily with CompactBlock LDX systems. You can rely on its stable 0‑10V output for actuators, valves, or analog indicators.

Packaging List

• 1790D-TN0V2 analog output module (1 unit)

• Terminal block (M3.0) with screws

• Quick start guide

Shipping

We ship via FedEx, UPS, or DHL.

Frequently Asked Questions

1. Can I use the 1790D-TN0V2 with a 5V load?
No. The output range is fixed at 0‑10V. Your load must accept this voltage.

2. How many expansion modules can I add?
You can add up to two discrete expansion modules to this analog base module.

3. Does the 1790D-TN0V2 require external calibration?
No calibration is required. The module maintains 0.2% accuracy over its temperature range.

4. What happens if I connect a load below 1 KΩ?
The output may become inaccurate or overheat. Always ensure load resistance is 1 KΩ minimum.

5. Is the module isolated from DeviceNet power?
No. DeviceNet to logic is nonisolated. Field power is also nonisolated. Only I/O to logic has photocoupler isolation.