Allen-Bradley 1734-OB8 Digital DC Sourcing Output Module
$123.00
$320.00
Description
Allen-Bradley 1734-OB8 Digital DC Sourcing Output Module
The Allen-Bradley 1734-OB8 serves as the primary 1734-OB8 Digital DC Sourcing Output Module utilized to execute discrete 24 VDC load switching across POINT I/O distributed I/O platforms. The module provides eight sourcing output channels, transferring output state data through the POINTBus architecture while driving field devices with a nominal 24 VDC output level.
Suffix Breakdown & Model Matrix
The available documentation identifies a single catalog number: 1734-OB8. No official suffix variants, option codes, or ordering matrix information are specified.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | 1734-OB8 |
| Brand | Allen-Bradley |
| Product Line | Point I/O 1734 |
| Series | POINT I/O |
| Module Type | Digital DC Sourcing Output Module |
| Number of Outputs | 8 |
| Output Type | Sourcing |
| Nominal On-State Voltage | 24 VDC |
| On-State Voltage Range | 10 VDC to 28.8 VDC |
| Maximum On-State Voltage Drop | 0.2 VDC |
| Minimum On-State Current | 1.0 mA per channel |
| Maximum Off-State Leakage | 0.5 mA at 28.8 VDC |
| Output Current Rating | 1.0 A per output |
| Maximum Module Current | 2.0 A |
| Surge Current | 2 A for 10 ms, repeatable every 3 s |
| Maximum Output Signal Delay | 0.1 ms |
| Isolation Voltage | 50 V continuous |
| Indicators | 8 yellow output LEDs, 2 green/red module-network LEDs |
| Mounting Style | Rack mounted |
| Weight | 0.13 lb |
Firmware Compatibility and I/O Density Scaling
The 1734-OB8 increases output density within a POINT I/O assembly by providing eight sourcing channels in a single module footprint. Output state information is exchanged through the POINTBus backplane, allowing controller-directed operation within distributed I/O architectures. During module replacement or commissioning, firmware and adapter compatibility should be verified against the installed POINT I/O communication infrastructure to maintain expected data exchange behavior.
Frequently Asked Questions
Q: What is the maximum output current supported by each channel?
A: Each output channel is rated for 1.0 A, with a maximum module current capacity of 2.0 A.
Q: What is the specified output response time?
A: The maximum output signal delay is specified as 0.1 ms.
Q: Does the module provide diagnostic indication for outputs and network status?
A: Yes. The module includes eight yellow LEDs for output status and two green/red LEDs for module and network status indication.
Field Installation Guidelines
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Verify field devices are compatible with sourcing-type 24 VDC outputs before wiring.
-
Install the module according to POINT I/O assembly procedures and ensure proper mechanical retention.
-
Route output conductors separately from motor feeders, contactor wiring, and variable frequency drive cables.
-
Maintain correct DC polarity throughout field wiring connections.
-
Inspect terminal connections for secure conductor termination before energizing the system.
-
Confirm that total connected load current remains within the documented per-channel and module limits.
-
Follow cabinet grounding practices and bond cable shields according to site electrical standards.
Features
Minimum Order Quantity (MOQ)
We welcome bulk orders and have a minimum order quantity of just one unit.
Certificates and Documentation
Upon request, we can provide all necessary documentation, including Certificates of Origin/Conformance and other required export documents.
Delivery Time
For items in stock, we aim to deliver within 1-3 days after payment confirmation. Items with specified lead times will be delivered according to the quoted schedule.
Payment Methods
We accept 100% T/T (Telegraphic Transfer) payment before shipping. For items with lead times, a 30% deposit is required upfront, with the remaining 70% due before shipment. For RMB transfers, please contact us if you have an agent in China.
Warranty
We offer a standard one-year warranty on all new and original items. If you require an extended warranty, please contact us for additional cost details.
Refund and Return Policy
Your satisfaction is important to us. If you need to return an item, it must be done within 30 days of the order date. The product must be unused, unopened, and in its original packaging with all accessories included. Refunds are processed within 5-7 business days after we receive the returned item. Please note that shipping and related charges are non-refundable.
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