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Allen-Bradley 1790-OB16X CompactBlock LDX 16-Point Digital Output Expansion Block – Technical Specifications and FAQ
Technical Specifications
| Parameter | Specification |
|---|---|
| Brand | Allen-Bradley |
| Manufacturer | Rockwell Automation |
| Model | 1790-OB16X |
| Product Series | CompactBlock LDX |
| Product Type | Digital output expansion block |
| Communication Network | DeviceNet |
| Number of Outputs | 16 points |
| Output Type | DC sourcing (PNP) |
| Rated Output Voltage | 24 V DC nominal |
| Output Voltage Range | 10–28.8 V DC |
| Maximum Output Current | 0.5 A per output |
| Maximum Current per Common | 4.0 A |
| Output Configuration | 8 points / 8 commons |
| Output Signal Delay | OFF to ON: 0.5 ms max; ON to OFF: 1.0 ms max |
| Output Isolation | Non-isolated between output points |
| I/O-to-Logic Isolation | Photocoupler isolation, 1250 V AC RMS |
| Connection Type | 37-pin D-shell connector |
| Field Power Supply | 24 V DC nominal |
| Field Power Voltage Range | 10–28.8 V DC |
| Mounting | Expansion connection to compatible CompactBlock LDX base |
| Country of Origin | USA |
| UPC | 612598278602 |
| Lifecycle Status |
Discontinued
June 30, 2024 |
| Dimensions (H × W × D) | Approx. 104 × 42 × 52 mm (supplier-listed; verify physical dimensions) |
| Weight | Approx. 0.14 kg net (supplier-listed; not manufacturer-confirmed) |
FAQ
FAQ
Q1: What is the Allen-Bradley 1790-OB16X used for?
A: It is a 16-point digital output expansion module designed to extend the output capacity of a compatible CompactBlock LDX DeviceNet I/O system.
Q2: What type of digital outputs does it provide?
A: It provides 16 DC sourcing outputs (PNP), suitable for controlling compatible 24 V DC field devices.
Q3: What is the rated output voltage?
A: The nominal output voltage is 24 V DC, with an operating range of 10–28.8 V DC.
Q4: What is the maximum output current?
A: Each output supports up to 0.5 A, with a maximum of 4.0 A per common.
Q5: What type of connection does the 1790-OB16X use?
A: It uses a 37-pin D-shell connector for field wiring.
Q6: Is the 1790-OB16X compatible with all DeviceNet systems?
A: No. It is an expansion block designed for compatible CompactBlock LDX base modules. Check the base module and expansion configuration before installation.
Q7: Is the 1790-OB16X discontinued?
A: Yes. Rockwell Automation lists June 30, 2024, as its discontinuation date. The product is no longer available for sale through Rockwell’s standard product channel.
Q8: What are the dimensions and weight for shipping?
A: Supplier information indicates approximately 104 × 42 × 52 mm and 0.14 kg net weight. These are reference figures, not confirmed manufacturer shipping specifications. Allow additional space and weight for export packaging.
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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.
