Allen-Bradley 1790D-T4R0 CompactBlock LDX 4-Channel RTD PLC Module

Product Overview

The Allen-Bradley 1790D-T4R0 CompactBlock LDX module provides accurate RTD temperature measurement for industrial automation.

Functional Highlights

• This module acquires temperature data from RTD and resistance sensors.
• Four independent input channels support simultaneous multi-point monitoring.
• DeviceNet communication ensures stable digital data transfer.

Measurement Capabilities

• The resistance input range spans from 1 to 625 ohms.
• Resolution reaches 0.1 °C per bit for precise temperature control.
• A 20-bit sigma-delta converter improves accuracy and signal stability.

Filtering and Response Speed

• Selectable notch filters reduce electrical noise interference.
• Filter options range from 10 Hz to 500 Hz.
• Each channel updates data within 8 milliseconds.

Environmental and Electrical Design

• The module operates reliably between 0 and 55 degrees Celsius.
• Photocoupler isolation protects logic circuits from field disturbances.
• Overall accuracy reaches 0.2 percent of full scale.

Installation and Status Indication

• Compact housing supports DIN rail and screw mounting.
• M3.0 terminals simplify wiring with standard copper conductors.
• Red and green LEDs display channel operating status.

Power and Communication Interface

• DeviceNet supply operates from 11 to 28.8 volts DC.
• Field power supports 21.6 to 26.4 volts DC input.
• Data transmits as 16-bit signed integer values.

Supported Sensor Types

• Platinum RTDs include 100, 200, and 500 ohm models.
• Nickel RTDs support 100, 120, 200, and 500 ohm sensors.
• Temperature ranges extend from -200 to +850 degrees Celsius.

Packaging and Delivery

• The package includes one CompactBlock LDX RTD base module.
• Industrial packaging protects the module during transportation.
• Shipping options include FedEx, UPS, and DHL.

Frequently Asked Questions

• How does the module detect wiring issues?
  Open wire conditions report as out-of-range values.
• Can this base expand input channels?
  Additional channels require installing another base module.
• Which applications commonly use this module?
  Users apply it in thermal processes and industrial control systems.

Technical Summary

• Brand: Allen-Bradley, Manufacturer: Rockwell Automation.
• Model: 1790D-T4R0, Series: CompactBlock LDX.
• Category: PLC RTD Input Module, Channels: 4.

Author: Powergear X Automation

Contact Information Inquiries:
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+86 18030005825

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