I/O Module Allen-Bradley 1790D-8BV8B

Allen-Bradley 1790D-8BV8B Universal I/O Module Product Introduction

Input Specifications & Capabilities

• The 1790D-8BV8B provides 8 universal input points that support both sinking and sourcing configurations.
• Input on-state voltage ranges from 9.6V DC minimum to 28.8V DC maximum, with 24V DC nominal.
• Each input channel draws a maximum of 8 mA at 28.8V DC during operation.
• The module features a nominal input impedance of 4.8 KΩ for reliable signal detection.
• All eight input points have independent commons (8 points/8 COM) for wiring flexibility.

Output Specifications & Performance

• The module includes 8 sourcing output points for driving various loads.
• Output on-state voltage ranges from 10V DC minimum to 28.8V DC maximum, with 24V DC nominal.
• Each output supports 0.5A maximum current per point with a 4.0A maximum per common group.
• Fast response times include 0.5 ms maximum off-to-on delay and 1.0 ms maximum on-to-off delay.
• The module maintains low off-state leakage current of 0.5 mA maximum for energy efficiency.

Power Requirements & Isolation

• DeviceNet power operates at 24V DC nominal (11-28.8V DC range) with 1.2W maximum power dissipation.
• Field power supply requires 10-28.8V DC with 6 mA per point consumption at 28.8V DC.
• Photocoupler isolation provides 1250V AC RMS protection between I/O circuits and internal logic.
• The module uses a standard 37-pin D-shell connector for all wiring connections.
• Each I/O point features individual green LED status indicators for immediate diagnostics.

Frequently Asked Questions (FAQ)

• Q: What does "universal input" mean for the 1790D-8BV8B?
  A: Universal inputs can be wired as either sinking or sourcing configurations without hardware changes.
• Q: What is the maximum output current per channel?
  A: Each sourcing output supports up to 0.5A maximum current with proper heat dissipation.
• Q: How many commons does this module have?
  A: The 1790D-8BV8B features independent commons for each point (8 points/8 COM) for maximum wiring flexibility.
• Q: What isolation protection does this module provide?
  A: The module offers 1250V AC RMS photocoupler isolation between I/O circuits and control logic.
• Q: What is your return and shipping policy?
  A: We offer 30-day returns and ship within 5 days via major international carriers.

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