Product Overview
The Allen-Bradley 1790-T8A0X CompactBlock LDX digital input expansion module delivers stable AC signal acquisition for industrial automation systems.
This module supports cost-effective I/O expansion while maintaining strong network reliability through DeviceNet communication.
Technical Specifications
- Brand: Allen-Bradley
- Model: 1790-T8A0X
- Product Series: CompactBlock LDX
- Product Type: Digital Input Expansion Module
- Input Channels: 8 non-isolated AC inputs
- Rated Input Voltage: 85–132V AC
- Nominal Voltage: 110V AC
- On-State Current: 9 mA maximum at 132V AC
- Off-State Voltage: 45V AC maximum
- Input Impedance: 18 kΩ
- Signal Delay: Off to On 10 ms, On to Off 30 ms
- Power Dissipation: 3 W at 132V AC
- Communication Protocol: DeviceNet
- Enclosure Type: NEMA Type 1
- Status Indicators: 8 green LED input indicators
Environmental & Electrical Performance
- Photocoupler isolation enhances noise immunity and signal stability.
- 1250V AC isolation rating protects logic circuits from field voltages.
- 24V DC DeviceNet power supports flexible network integration.
- Recommended 1A, 250V normal-blow fuse improves AC line protection.
Installation Guidelines
- Mount the module inside a protected NEMA Type 1 enclosure.
- Use copper or copper-clad aluminum conductors for all terminals.
- Apply a maximum screw torque of 7 lb-in to ensure secure wiring.
- Configure node addressing using rotary switches or EDS files.
Package Contents
- 1 × Allen-Bradley 1790-T8A0X Digital Input Module
- Integrated fixed screw terminal block
- Protective factory packaging
Shipping Information
- Fast global delivery via FedEx, UPS, or DHL.
- Secure industrial packaging ensures safe transportation.
Frequently Asked Questions
- Which controllers support this module?
- The module works with Allen-Bradley PLC, SLC, Logix, and SoftLogix systems using DeviceNet scanners.
- Does this module support isolated inputs?
- The inputs operate as non-isolated channels designed for standard AC signal applications.
Contact Information
- Email: info@oiltechcontrols.com
- WhatsApp: +86 158 8020 0923
Author: Oiltech Controls
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