5X00270G01 Emerson Redundant Digital Output module

Working principle

Signal reception and processing: The module is connected to the control system through a communication interface and receives digital signal instructions from the controller. These instructions are usually represented in binary code form, such as "0" and "1", representing different output states respectively. The circuits inside the module will decode and amplify these signals, etc., so as to be able to drive the subsequent output circuits.

Output drive: The module has 16 optical isolation channels. Each channel can control the on and off of the 24V DC power supply to the external load through the high-end power MOSFET switch. When the received signal is "1", the MOSFET switch conducts, allowing current to pass through, thereby supplying power to the external load and enabling it to operate, such as powering the relay coil or lighting up the indicator light, etc. When the signal is "0", the MOSFET switch is disconnected, cutting off the power supply to the load and the load stops working. Each channel can provide a maximum output current of 500mA, which can meet the driving requirements of various loads.

Redundant working mechanism: This module supports redundant mode and can run in parallel with another module. The two modules will simultaneously receive the same control signals and monitor each other's working status in real time. Under normal circumstances, both modules are in the ready output state, with one being the primary module and the other the backup module. When the primary module malfunctions, such as a short circuit or component damage, the backup module will immediately take over the output task automatically and continue to provide the correct signal output to the external load, ensuring that the control function of the system is not interrupted. This process does not require user intervention, thereby enhancing the reliability and stability of the system.

Fault Diagnosis and Protection: The module is equipped with an internal diagnostic function that can monitor its own working status in real time, including detecting whether there are short circuits, open circuits or other faults in the output channel, as well as monitoring whether the power supply voltage and current are normal, etc. When a fault is detected, the module will send a fault alarm signal to the control system through the communication interface, so that the operator can promptly investigate and handle it. Meanwhile, each channel is equipped with overload protection function, which can prevent the module from being damaged due to excessive load or short circuit and other situations.

Power supply: The module can be powered by the Ovation auxiliary power supply or by an external 24V DC power supply. The power supply section will perform filtering, voltage stabilization and other processes on the input power supply, providing a stable working voltage for the circuits inside the module to ensure its stable operation.

Technical parameters

Output channels: 16 optical isolation channels.

Output current: Each channel can reach up to 500mA at most.

Input voltage: 24VDC.

Power supply mode: It can be powered by the Ovation auxiliary power supply, with a maximum current of 2A for each module. It can also be powered by an external 24V DC power supply with a maximum current of 4A.

Operating temperature: -10℃ to 60℃.

Communication interfaces: Ethernet, RS485.

Functional characteristics

Redundancy function: Supports simplex mode (independent operation) and redundancy mode (parallel operation with another module). When the primary module malfunctions, the backup module will automatically take over the output tasks to ensure that the system control functions are not interrupted.

Strong load driving capability: It adopts high-end power MOSFET switches, which can directly drive the load without the need for external relays. Each channel can provide 500mA current, which can meet the driving requirements of various 24V DC loads.

Fault diagnosis and protection: It is equipped with an internal diagnostic function that can detect short circuits, open circuits and other faults in the output channel, as well as the status of power supply voltage and current. Each channel is equipped with overload protection and also supports short-circuit and open-circuit line fault detection.

Optical isolation design: The channel adopts optical isolation technology, which can effectively isolate the internal circuit of the module from the external circuit, enhance the anti-interference ability, and protect the module from external electrical interference and surges.

Flexible power supply options: It can either use the Ovation auxiliary power supply or be powered by an external 24V DC power supply, facilitating the selection based on the actual application scenarios.

Convenient communication: Equipped with Ethernet and RS485 communication interfaces, it can conveniently communicate with other devices or control systems, achieving remote monitoring and control.

Application scenarios:

Power system control: In power plants, it can be used to control the opening and closing of equipment such as circuit breakers and disconnectors of generators, as well as the opening and closing control of dampers and baffles in the boiler combustion system, ensuring the stable operation of the power generation process. It can also be used in substation automation systems to remotely control and monitor the status of switchgear on transmission lines, achieving reliable power distribution and transmission.

Chemical process control: In chemical production, it can control the opening and closing of valves on various material conveying pipelines, precisely regulate the material flow rate, and ensure the smooth progress of chemical reactions. Meanwhile, it is used to control the start and stop of the agitator in the reactor, the on and off of the heating or cooling equipment, etc., to maintain the stability of the reaction conditions. In addition, in the chemical safety system, this module can participate in the emergency shutdown system (ESD). When abnormal situations occur, it can quickly cut off the power supply of relevant equipment or close the valves to prevent the accident from expanding.

Oil and gas extraction and transportation: On oil drilling platforms, the operation of equipment such as mud pumps and blowout preventers can be controlled to ensure the safety and efficiency of drilling operations. In natural gas transmission pipelines, it is used to control pressure regulating valves, stop valves, etc., to achieve the regulation of natural gas pressure and flow rate and ensure the stable transmission of natural gas. It can also be applied to the automatic control system of petrochemical plants to control equipment such as fractionating columns and compressors, ensuring the normal operation of the production process.

Metallurgical production process: In steel mills, it can be used to control the feeding system of blast furnaces, achieving precise control of raw material conveying equipment such as ores and coke. It can also control the oxygen gun lifting and tilting mechanism of the steelmaking converter, etc., to improve the degree of automation and production efficiency of steelmaking production. In addition, in the steel rolling workshop, the start and stop of the rolling mill, the speed regulation of the rolls, and the actions of the flying shears can be controlled to ensure the quality of steel rolling and the continuity of the production process.

Building automation: In intelligent buildings, it can be used to control the start and stop of elevators, floor selection, and the opening and closing of access control systems, enhancing the intelligent management level of buildings. It can also control the fans, solenoid valves and other equipment of the air conditioning system, automatically adjust the operating state of the air conditioner according to the indoor and outdoor environmental parameters, and achieve energy conservation and a comfortable indoor environment. Meanwhile, it can be used for the control of lighting systems. According to different time periods and lighting conditions, the lamps can be automatically turned on or off to save energy.

Food and beverage processing: On the beverage filling line, the lifting of the filling head and the start and stop of the bottle cap tightening device can be controlled to ensure filling accuracy and product quality. In the food packaging process, it is used to control the various actuating mechanisms of the packaging machine, achieving precise control over actions such as the conveying, sealing, and cutting of packaging materials, thereby enhancing packaging efficiency and quality.