Allen-Bradley 1790D-T4T0 | 4-Channel DeviceNet Thermocouple Module

Product Introduction

The Allen-Bradley 1790D-T4T0 is a 4-channel input module. It works with DeviceNet industrial networks. This module connects thermocouples for temperature measurement. It is part of the CompactBlock LDX series. Author: Powergear X Automation. Contact us at sales@powergearx.com or +86 18030005825.

Main Specifications

• Brand & Model: Allen-Bradley 1790D-T4T0
• Series: CompactBlock LDX I/O Module
• Input Type: 4 Thermocouple/mV Channels
• Input Range: -76.50mV to +76.50mV
• Resolution: 16-bit (0.1°C/°F per bit)
• Scan Time: 140 ms per channel
• Accuracy: 0.2% Full Scale
• Operating Temp: 0°C to 55°C
• Power Supply: 24V DC (11-28.8V DC range)
• Open Wire Detection: Yes
• Cold Junction Comp: 0°C to 70°C
• Weight: 0.50 lbs (0.23 kg)

Supported Thermocouple Types

• Type B (300…1800°C)
• Type E (-270…1000°C)
• Type J (-210…1200°C)
• Type K (-270…1370°C)
• Type N (-270…1300°C)
• Type R (-50…1768°C)
• Type S (-50…1768°C)
• Type T (-270…400°C)
• 10µV Voltage Input

Key Features

• Four independent temperature input channels
• High 16-bit resolution for accurate readings
• Built-in open wire fault detection
• Configurable notch filter settings
• Compact design saves panel space
• Easy screw terminal block wiring
• LED status lights for each channel
• Direct DeviceNet network connection

Configuration Settings

• Notch Filter: 10, 25, 50, 60, 100, 250, 500 Hz
• Default Filter: 60 Hz
• Data Format: 16-bit integer
• Input Impedance: 5 MΩ
• Isolation: 1250V AC RMS (I/O to logic)

Shipping & Warranty Details

• Package: 1 x 1790D-T4T0 module
• Warranty: 12 months
• Shipping: FedEx, UPS, DHL worldwide
• Packaging: Secure protective materials
• Lead Time: Typically 2-4 weeks

Frequently Asked Questions

What thermocouple types does it accept?

It accepts Types B, E, J, K, N, R, S, T and 10µV input.

How accurate is the measurement?

Accuracy is 0.2% of full scale at 0-55°C.

What is the channel scan speed?

All 4 channels are scanned every 140 ms.

Does it detect wiring faults?

Yes, it detects open wires and shows fault status.

What voltage does it need?

It requires 24V DC power (11-28.8V DC range).

Copyright © 2025 Powergear X Automation Limited. All rights reserved.
Original Source: https://www.powergearx.com/
Partner Ubest Automation Limited https://www.ubestplc.com/
PLCDCS HUB Limited https://plcdcshub.com/