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Allen-Bradley 1790-8BV8BX CompactBlock LDX 8-Input / 8-Sourcing-Output Expansion Block – Technical Specifications and FAQ
Technical Specifications
| Parameter | Specification |
|---|---|
| Manufacturer | Allen-Bradley / Rockwell Automation |
| Model | 1790-8BV8BX |
| Product Family | CompactBlock LDX |
| Product Type | Digital I/O Expansion Block |
| Product Description | 8 Universal Inputs / 8 Sourcing Outputs, 24V DC, D-Shell |
| Total I/O Points | 16 points |
| Digital Inputs | 8 points, universal sinking / sourcing |
| Digital Outputs | 8 points, sourcing transistor |
| Nominal Voltage | 24V DC |
| Input ON-State Voltage | 9.6–28.8V DC |
| Input OFF-State Voltage | 5V DC maximum |
| Input Current | 8 mA maximum per point |
| Input Impedance | 4.8 kΩ nominal |
| Output Voltage Range | 10–28.8V DC |
| Output Current | 0.5 A maximum per point |
| Maximum Output Current per Common | 4.0 A |
| Output Voltage Drop | 0.5V DC maximum |
| Output OFF-State Leakage | 0.5 mA maximum |
| Field Connector | 37-pin D-shell |
| Communication | DeviceNet through compatible CompactBlock LDX base block |
| Expansion Connection | Ribbon cable |
| Status Indicators | 8 input LEDs and 8 output LEDs |
| Isolation | Photocoupler isolation |
| Mounting | DIN rail or panel mounting |
| Operating Temperature | 0 to 60°C (verify against applicable installation documentation) |
| Product Dimensions | 104 × 42 × 52 mm (L × W × H; supplier-listed) |
| Packing Dimensions | Approx. 150 × 120 × 100 mm (estimated) |
| Net Weight | Approx. 0.10 kg (supplier-listed) |
| Gross Weight | Approx. 0.30 kg (estimated, including packaging) |
| Country of Origin | USA |
| Product Status | CompactBlock LDX expansion product; verify current availability with supplier |
FAQ
FAQ
Q1: What is the Allen-Bradley 1790-8BV8BX?
A: It is a CompactBlock LDX digital I/O expansion module featuring 8 universal DC inputs and 8 sourcing transistor outputs.
Q2: What is the difference between the input and output channels?
A: The eight input channels support both sinking and sourcing sensor signals, while the eight output channels use sourcing transistor technology for controlling compatible 24V DC loads.
Q3: What is the rated operating voltage?
A: The module operates with a nominal 24V DC field supply. The input ON-state voltage range is 9.6–28.8V DC.
Q4: What is the maximum output current?
A: Each output channel supports up to 0.5 A, with a maximum combined current of 4.0 A per common connection.
Q5: Can the 1790-8BV8BX operate independently?
A: No. It is an expansion block and requires a compatible CompactBlock LDX base block for system operation and DeviceNet communication.
Q6: What type of connector does this module use?
A: It uses a 37-pin D-shell field connector and a ribbon cable expansion connection.
Q7: What are the dimensions and weight of the 1790-8BV8BX?
A: The supplier-listed dimensions are approximately 104 × 42 × 52 mm, with a net weight of approximately 0.10 kg. Estimated packed dimensions are 150 × 120 × 100 mm, with a gross weight of approximately 0.30 kg.
Q8: What is the country of origin?
A: Please verify the actual manufacturing origin against the product nameplate or Certificate of Origin before export.
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Packing & Delivery
We will use wear-resistant cartons to seal the boxes, and take photos for your confirmation before sealing. We will pack the boxes only after confirmation.
For express delivery, we will use DHL, UPS, TNT, FedEx and EMS.
Please rest assured that we have a deep cooperation with express delivery companies and can ensure that your goods are delivered to you in good condition.
