Allen Bradley 1756-OF8 is an automation control module produced by Rockwell Automation(Allen-Bradley,AB)in the United States,specifically belonging to its ControlLogix series of products.The following is a detailed introduction to the module:
1.Basic Overview
1756-OF8 is a module with 8 voltage or current analog outputs that can be installed in any slot of the ControlLogix chassis.It is usually used to convert digital signals into analog output signals to control various actuators or devices,such as valves,motors,inverters,etc.
2.Technical parameters
Output capability:
The output rating is±10 volts or 0 to 20 mA.
The voltage or current output range is-10 to 10V or 4 to 20 mA.
Signal resolution and power consumption:
The signal resolution is 15 bits at 21 mA and 15 bits at 10.4 volts.
The maximum power consumption of the circuit is 5.8 watts,and the total rated power is also 5.8 watts.
Allen Bradley 1756-OF8
Backplane current:
At 24 volts DC,the backplane current is 210 mA.
Backplane current is 150 mA DC at 5.1 V.
Protection Mechanisms:
Circuit detection provides overvoltage protection at 24 V DC.
Short-circuit protection is provided by electronically limiting the current to 21 mA or less.
Scan Time and Error:
Floating point scan time is 12 ms,integer scan time is 8 ms.
Total module error is 0.15%in voltage mode and 0.3%in current mode.
Other Parameters:
Voltage or current settling time is 2 ms.
Calibration accuracy is 0.05%,and the module calibration interval is 12 months.
Isolation voltage is 250 V,and 1350 V AC is isolated between the output channel and the backplane for 2 seconds using reinforced insulation tested.
Available in T4A(North America),T4(ATEX),and T4(IEC)temperature codes and open enclosure.
3.Functional features
Multiple communication interfaces:1756-OF8 modules usually have multiple communication interfaces,such as Ethernet interface,control network interface,etc.,to achieve data exchange and communication with other devices and systems.
High-performance processing capability: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:Parameter setting and function customization through programming or configuration software to meet different application requirements.
Multiple input/output interfaces:Provide a variety of digital input/output interfaces and analog input/output interfaces to connect and control various sensors,actuators and external devices.
High reliability and stability:Able to operate stably for a long time in an industrial environment and provide reliable control performance.
Compatibility:Compatible with other automation products and systems of AB Company,and can form a complete automation control system with other modules.
Allen Bradley 1756-OF8
4.Application field
1756-OF8 module is widely used in the field of industrial automation,including manufacturing,chemical,energy,medicine and other industries.It is an important part of modern industrial control systems to realize the control of various equipment and process parameters.
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