Allen-Bradley(abbreviated as A-B or AB)1756-OF8 is an automation control module produced by Rockwell Automation,USA,and belongs to its ControlLogix series of products.The following is a detailed introduction to Allen-Bradley 1756-OF8:

1.Product Overview

1756-OF8 is an analog output module,which is usually used in industrial control systems to convert digital signals into analog output signals to control various actuators or devices,such as valves,motors,inverters,etc.It is an important part of modern industrial control systems to achieve control of various equipment and process parameters.

2.Product Features

Multiple communication interfaces:

1756-OF8 modules usually have multiple communication interfaces,such as Ethernet interfaces,control network interfaces,etc.,to achieve data exchange and communication with other devices and systems.

High-performance processing capabilities:

The module is equipped with a high-performance processor that can handle complex control algorithms and real-time tasks to meet the requirements of industrial automation systems.

Programmability:

The 1756-OF8 module is programmable,and parameter settings and function customization can be performed through programming or configuration software to meet different application requirements.

Multiple input/output interfaces:

The module generally provides a variety of digital input/output interfaces and analog input/output interfaces to connect and control various sensors,actuators and external devices.

High resolution and high precision:

The 1756-OF8 module has high resolution and high precision,which can achieve precise control of output signals and meet the requirements of industrial control systems for output accuracy.

High reliability and stability:

The module has high reliability and stability,can operate stably for a long time in industrial environments,and provide reliable control performance.

Compatibility:

The 1756-OF8 module is compatible with other automation products and systems of AB Company,and can form a complete automation control system with other modules.

Support redundant communication media:

The module supports redundant communication media to prevent communication loss when the splitter or relay line is disconnected.

III.Technical Specifications

Output Capability:

Output rating is±10 V or 0 to 20 mA,and the voltage or current output range is-10 to 10 V or 4 to 20 mA.

Signal Resolution:

Signal resolution is 15 bits at 21 mA and 15 bits at 10.4 V.

Power Consumption:

The maximum power consumption of the circuit is 5.8 W,and the total power rating is also 5.8 W.

Backplane Current:

Backplane current is 210 mA at 24 V DC and 150 mA at 5.1 V DC.

Protection Mechanism:

It has a circuit detection function that can provide overvoltage protection at 24 V DC and short-circuit protection by electronically limiting the current to 21 mA or less.

Scan Time:

Floating point scan time is 12 ms,and integer scan time is 8 ms.

Total Module Error:

0.15%in voltage mode and 0.3%in current mode.

Temperature and housing:

With T4A(North America),T4(ATEX)and T4(IEC)temperature codes,and an open housing.

IV.Application Fields

1756-OF8 modules are widely used in industrial automation,including manufacturing,chemical,energy,medicine and other industries.They are an important part of modern industrial control systems to achieve control of various equipment and process parameters.

 

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