Allen-Bradley 1756-OF8 ControlLogix Analog Output Module
$123.00
$320.00
Description
Product Description
The 1756-OF8 is a high-performance analog output module from the Allen-Bradley ControlLogix series, designed for precise voltage and current signal control in industrial automation systems. The module provides eight single-ended analog output channels capable of delivering either voltage or current signals for process control applications.
The Allen-Bradley 1756-OF8 supports configurable output ranges including ±10V DC and 0–20 mA, making it suitable for interfacing with control valves, variable frequency drives, actuators, recorders, and other analog field devices. With 15-bit resolution and fast signal settling performance, the module delivers stable and accurate analog signal transmission for critical process environments.
Its reinforced backplane isolation and advanced electronic protection functions help improve reliability in electrically demanding industrial installations.
Technical Specifications
| Parameter | Specification |
|---|---|
| Manufacturer | Allen-Bradley |
| Product Series | ControlLogix |
| Product Type | Analog Output Module |
| Model Number | 1756-OF8 |
| Output Channels | 8 Single-Ended Outputs |
| Output Signal Types | Voltage and Current |
| Voltage Output Range | -10V to +10V DC |
| Current Output Range | 0 to 20 mA |
| Resolution | 15-Bit |
| Voltage Resolution | 320 µV/bit |
| Current Resolution | 650 nA/bit |
| Backplane Current at 5.1V | 150 mA |
| Backplane Current at 24V | 210 mA |
| Total Backplane Power | 5.8 W |
| Maximum Power Dissipation | 5.8 W |
| Thermal Dissipation | 16.78 BTU/hr |
| Output Load Capability (Voltage) | Greater than 2000 Ω |
| Output Load Capability (Current) | 0 to 750 Ω |
| Open Circuit Detection | Current Outputs Only |
| Overvoltage Protection | 24V DC |
| Short Circuit Protection | Electronically Limited to ≤21 mA |
| Settling Time | Less than 2 ms to 95% |
| Accuracy at 25°C | Better than 0.05% of Full Scale |
| Module Error | Voltage: 0.15% / Current: 0.3% |
| Offset Drift | 50 µV/°C (Voltage), 0.1 µA/°C (Current) |
| Gain Drift | 25 ppm/°C Voltage, 50 ppm/°C Current |
| Data Formats | Integer and IEEE 32-Bit Floating Point |
| Scan Time | 8 ms Integer / 12 ms Floating Point |
| Isolation Voltage | 250V Continuous Reinforced Isolation |
| Channel Isolation | No Isolation Between Output Channels |
| Conversion Method | R-Ladder DAC |
| Terminal Block Compatibility | 1756-TBNH, 1756-TBSH |
| Operating Temperature | 0°C to 60°C |
| Storage Temperature | -40°C to 85°C |
| Relative Humidity | 5–95% Non-Condensing |
| Vibration Rating | 2 g at 10–500 Hz |
| Shock Rating | 30 g Operating / 50 g Non-Operating |
| Enclosure Type | Open-Style |
| Dimensions | 1.5 × 6.0 × 5.5 in (3.8 × 15.2 × 14.0 cm) |
| Weight | 0.51 lbs |
Key Features
-
Eight configurable analog output channels
-
Supports both voltage and current analog signaling
-
High-accuracy 15-bit digital-to-analog conversion
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Fast response time for dynamic process control
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Reinforced isolation from backplane circuitry
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Integrated short-circuit and overvoltage protection
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Floating-point and integer data processing support
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Compatible with standard ControlLogix chassis systems
Application Areas
The 1756-OF8 is commonly deployed in industrial systems requiring precise analog output control, including:
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Process automation systems
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Variable speed drive control
-
Valve positioning applications
-
Chemical processing
-
Water and wastewater treatment
-
Power generation facilities
-
Industrial manufacturing lines
-
Distributed control systems (DCS)
Environmental and Compliance Information
The module complies with multiple industrial standards and certifications, including:
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UL Listed
-
CSA Certified
-
CE Compliant
-
ATEX Certified
-
IECEx Approved
-
RCM Compliant
-
EMC Industrial Immunity Standards
FAQ
What output types are supported by the 1756-OF8?
The module supports both voltage outputs (-10V to +10V DC) and current outputs (0–20 mA).
How many analog outputs are available?
The 1756-OF8 provides eight independent analog output channels.
Does the module support channel isolation?
The module includes reinforced isolation between the output circuitry and backplane, but individual output channels are not isolated from one another.
Which terminal blocks are compatible with the module?
Compatible removable terminal blocks include the 1756-TBNH and 1756-TBSH.
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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