Allen-Bradley 1756-OF8/A ControlLogix Analog Output Module
$123.00
$320.00
Description
Allen-Bradley 1756-OF8/A ControlLogix Analog Output Module
The Allen-Bradley 1756-OF8/A, also cataloged as the 1756-OF8 Analog Output Module, operates as a dedicated hardware component for configurable analog signal generation within ControlLogix I/O platforms. The module provides eight voltage or current output channels with 15-bit resolution, signal scaling functions, and backplane communication through the ControlLogix chassis.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | 1756-OF8/A |
| Brand | Allen-Bradley |
| Origin | USA |
| Weight | 1.00 lbs |
| Dimensions | 1 slot width |
| Operating Temp | 0 deg C to 60 deg C |
| Power Consumption | 5.8 W backplane power |
| Module Type | Analog Output Module |
| Product Line | ControlLogix Bulletin 1756 I/O |
| Number of Outputs | 8 analog outputs |
| Output Type | Voltage or current |
| Voltage Output Range | -10 VDC to +10 VDC |
| Current Output Range | 0-20 mA |
| Resolution | 15-bit |
| Current Resolution | 650 nA/bit |
| Voltage Resolution | 320 uV/bit |
| Accuracy at 25 deg C | Better than 0.05% of range |
| Settling Time | Less than 2 ms to 95% of final value |
| Voltage Drive Capability | Greater than 2000 ohm |
| Current Drive Capability | 0-750 ohm |
| Current Draw at 5.1 V | 150 mA |
| Current Draw at 24 V | 210 mA |
| Thermal Dissipation | 16.78 BTU/hr |
| Isolation Voltage | 250 V continuous, channels-to-backplane |
| Protection | 24 VDC overvoltage protection, short-circuit limited to 21 mA |
| Enclosure Type | Open type |
ControlLogix Analog Signal Processing and Communication
The 1756-OF8/A operates within the ControlLogix architecture using backplane bus communication for controller-to-module data exchange. The module supports analog output scaling with configurable voltage and current signal modes for interfacing with proportional actuators, valves, and instrumentation devices.
The ControlLogix platform supports I/O density scaling through multi-slot chassis configurations. Firmware flash compatibility allows module lifecycle management within supported controller environments. The analog output channels provide independent signal generation with engineering unit configuration and diagnostic monitoring functions.
Frequently Asked Questions
Q: What analog output signals are supported by the 1756-OF8/A?
A: The module supports voltage outputs from -10 VDC to +10 VDC and current outputs from 0-20 mA.
Q: How many analog output channels are available on the module?
A: The 1756-OF8/A provides eight configurable analog output channels.
Q: What protection functions are included in the output circuitry?
A: The module provides 24 VDC overvoltage protection and short-circuit limiting for current output operation.
Field Installation Guidelines
Install the 1756-OF8/A module into a compatible ControlLogix chassis slot and verify correct backplane engagement before applying system power. Configure each analog output channel according to the connected field device signal requirements.
Use appropriate instrumentation wiring practices for analog signals. Route analog output cables separately from high-voltage power conductors and high-frequency switching circuits. Apply cable shielding and grounding according to the site electrical standard. Verify channel scaling, signal polarity, and terminal connections before placing connected devices into operation.
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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