Allen-Bradley 1790D-TN4V0 4 Ch Analog Input

1790D-TN4V0 Analog Voltage Input Module

Key Technical Specifications

The 1790D-TN4V0 module provides four single‑ended, nonisolated inputs. Each channel accepts a 0‑10V signal. Resolution reaches 12 bits unipolar, 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 10 ms per channel. Overall accuracy stays within 0.2% of full scale across 0‑55°C. You do not need any calibration. Input impedance measures 500 KΩ minimum. Insulation resistance reaches 20 mΩ minimum at 250V dc between insulated circuits.

Additionally, the 1790D-TN4V0 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. Four red/green I/O status indicators help you monitor each channel 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 your 0‑10V signal sources to the input channels. 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-TN4V0 is nonisolated from DeviceNet and field power. Therefore, proper grounding is essential.

Why Choose This Analog Input Module

This module offers reliable 10ms conversion per channel. Its 12‑bit resolution gives you precise voltage measurement. 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-TN4V0 works well in industrial automation, data logging, and process monitoring. It integrates easily with CompactBlock LDX systems. You can rely on its stable 0‑10V input for sensors, transmitters, or analog indicators.

Packaging List

• 1790D-TN4V0 analog input 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 the 1790D-TN4V0 measure 4-20mA signals?
No. This module accepts only 0‑10V voltage inputs. For current signals, you need a different module.

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-TN4V0 require external calibration?
No calibration is required. The module maintains 0.2% accuracy over its temperature range.

4. What is the input impedance of each channel?
Each channel has a minimum input impedance of 500 KΩ. This minimizes loading on your signal source.

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.