YOKOGAWA F3SP21-0N CPU module

YOKOGAWA F3SP21-0N CPU module

Product Overview

YOKOGAWA F3SP21-0N is a high-performance industrial grade CPU module launched by Yokogawa Electric in Japan. It is a core control component of the FA-M3 series rangeless controller system and serves as the "brain" of the PLC system. It is responsible for receiving, parsing, and executing user programs, coordinating the work of various I/O modules, positioning modules, communication modules, and other peripherals within the system, and achieving precise control and data processing of industrial automation processes. This module adopts a standardized slot installation design and can be seamlessly integrated into the FA-M3 series basic module rack. It has high-speed computing processing, rich instruction set, powerful peripheral expansion capability, and complete fault diagnosis function, which can effectively adapt to the complex control requirements of industrial sites and provide stable and reliable core control guarantee for various industrial automation control systems. It is widely used in industrial scenarios with strict requirements for control accuracy, response speed, and system stability.

Specification parameters

-Core computing specifications: using high-performance industrial grade processors, instruction processing speed: basic instruction 0.1 μ s/step, application instruction 0.5 μ s~several μ s/step (depending on instruction type); Program capacity: Built in Flash memory, maximum user program capacity of 80KB, maximum data storage capacity of 32KB;

-I/O expansion capability: Supports up to 256 digital input/output points, can adapt to various digital and analog I/O modules of FA-M3 series, supports module hot plugging (requires corresponding basic modules);

-Communication function: Built in RS-485 communication interface, supporting Modbus RTU protocol; Multiple industrial network communications, such as Ethernet and PROFINET, can be achieved through extended communication modules, supporting communication with upper computers HMI、 Data exchange between other PLCs and industrial IoT devices;

-Protection and diagnostic functions: Built in program error diagnosis, I/O fault diagnosis, communication abnormality diagnosis and other functions, with fault alarm output; Support user program password protection to prevent program tampering; Built in Watchdog timer, capable of handling abnormal operating conditions such as program runaway;

-Environmental adaptability: Operating temperature range of 0-50 ℃, relative humidity of 45%~85% RH (no condensation), suitable for indoor installation; Installation altitude not exceeding 2000m, in compliance with IEC 61131-2 standard, pollution level 2, overvoltage category II;

-Physics and Installation: Slot style installation, compatible with FA-M3 series basic module racks; The terminal spacing is 5.0mm. It is recommended to use a straight screwdriver with a size of 0.6 × 3.5 and a length greater than 130mm for wiring operations; The module size (width x height x depth) conforms to the standardized dimensions of the FA-M3 series, facilitating system integration;

-Warranty information: The standard warranty period is 1 year, and the acceptance period is 7 days.

Performance characteristics

-High speed computational processing: using high-performance industrial grade processors, the basic instruction processing speed is as low as 0.1 μ s/step, which can quickly execute complex user programs, ensuring high response speed of the control system and shortening the control cycle;

-Rich instruction set support: covering a full range of instructions such as logical operations, arithmetic operations, data processing, motion control, communication control, etc., it can meet the programming needs of various industrial automation control scenarios and reduce the difficulty of program development;

-Powerful expansion capability: supports a large number of I/O point expansion and multiple functional module (positioning, communication, analog) expansion, can flexibly configure the system according to actual control needs, and adapt to different requirements of industrial control projects from small to medium-sized;

-Reliable communication interaction: Built in RS-485 interface and Modbus RTU protocol, can directly communicate with various industrial devices; Support the expansion of multiple industrial network modules to achieve remote monitoring, data acquisition, and multi PLC collaborative control with the upper computer;

-Improve fault diagnosis: With comprehensive fault diagnosis functions, it can monitor program operation, I/O interfaces, communication links, and other status in real time. When abnormalities occur, it can alarm and output fault information in a timely manner, facilitating quick positioning and troubleshooting, and improving system operation and maintenance efficiency;

-Convenient programming and maintenance: Supports multiple programming languages (ladder diagrams, functional block diagrams, instruction lists, etc.) that comply with the IEC 61131-3 standard, and the programming software is user-friendly; Equipped with functions such as program upload/download, online monitoring, and debugging, it is easy to maintain; Support user program password protection to ensure intellectual property security.

Working principle

The core working principle of the YOKOGAWA F3SP21-0N CPU module is to serve as the core control unit of the PLC system, achieving precise control of industrial automation processes through a cyclic scanning mechanism of "input sampling program execution output refresh". After the module is powered on and initialized, it first enters a cyclic scanning state, and the entire workflow can be divided into three core stages.

The first stage is the input sampling stage: the CPU module reads the field signals (such as sensor, button, etc. input signals) collected by various extended I/O modules through the internal bus, and stores these signal states in the input image register. At this stage, regardless of whether the on-site input signal changes, the data in the input image register remains unchanged until the input sampling stage of the next scanning cycle is updated. The second stage is the program execution stage: the CPU module reads and executes instructions from the program memory one by one according to the instruction sequence of the user program. During the execution process, the CPU module performs operations and processing on the data in the input image register according to the program logic, and stores the results in the output image register. At this stage, the data in the output image register will be continuously updated as the program is executed.

The third stage is the output refresh stage: the CPU module transmits the operation results stored in the output image register to each extended output module through the internal bus, and the output module drives the on-site execution mechanism (such as relays, contactors, solenoid valves, etc.) to complete a control cycle. At the same time, the CPU module monitors its own working status and the communication status of various expansion modules in real time. The program running status is monitored through the Watchdog timer. If there are abnormal situations such as program runaway, communication interruption, I/O failure, etc., the fault diagnosis mechanism is immediately triggered, an alarm signal is output, and fault information is recorded. In addition, the CPU module interacts with devices such as the upper computer and HMI through built-in communication interfaces or extended communication modules to achieve functions such as receiving control instructions, uploading operating status, downloading and debugging programs, ensuring the efficient and coordinated operation of the entire control system.

Precautions

（1） Installation precautions

Environmental adaptation requirements: Can only be installed indoors, avoiding environments with temperatures exceeding 0-50 ℃ and humidity exceeding 45% -85% RH. Installation in areas with condensation, rain, or direct sunlight is strictly prohibited; Stay away from places with corrosive gases (such as sulfur dioxide, ammonia), flammable gases, high dust, salt spray, and metal powder; Avoid areas with strong vibrations, impacts, and high-frequency electromagnetic interference (such as frequency converters and thyristor equipment); Avoid installing near high-temperature equipment such as heaters and transformers to prevent high temperatures from affecting computational performance;

-Installation operation specifications: Installation should be carried out by professional engineers or skilled technicians, strictly following the FA-M3 series rack installation guide, firmly inserting the module into the designated slot, ensuring reliable contact between the module and the rack, and avoiding power interruption or poor contact heating caused by looseness;

Heat dissipation and spacing requirements: A minimum of 50mm of heat dissipation space must be reserved around the module, and it is strictly prohibited to stack debris in the heat dissipation channel; The distance between high-voltage equipment and power cables should not be less than 200mm to avoid installation on the same board and improve anti-interference performance; If the system integrates multiple modules, a reasonable layout is required to avoid heat accumulation between modules;

（2） Wiring precautions

-Power off operation prerequisite: Before wiring, all relevant equipment power must be turned off, and the input power cable must be confirmed to have no voltage before wiring to prevent electric shock or equipment damage;

Cable specification adaptation: Communication cables and I/O signal cables should use cables that comply with industrial standards. RS-485 communication recommends using twisted pair shielded wires with a single end grounded shielding layer; The cable connector terminals should be matched with the current load and terminal size to avoid poor contact and abnormal signal transmission;

Polarity and wiring specifications: Strictly follow the product manual labeling for wiring, distinguish between positive and negative power terminals, input and output signal terminals, and strictly prohibit reverse or incorrect connections, otherwise it will directly damage the module; Communication cables and I/O signal cables should be routed separately to avoid cross entanglement with power cables, and kept away from instrument signal cables to reduce electromagnetic interference; The length of communication cables should be controlled within the specification range (maximum transmission distance of 1200m for RS-485 communication), and repeaters should be used if it exceeds the range;

-Tightening and sealing: The wiring terminals should be tightened according to the specified torque (recommended 0.5~0.7N · m) to prevent loosening and heating; Unused cable entrances need to be sealed and fastened with dedicated seals to ensure the protection level of the casing; After the wiring is completed, it is necessary to confirm that the electrical wiring cover is fully installed to prevent foreign objects from entering or personnel from accidentally touching it.

（3） Precautions for operation and maintenance

Rated parameter limit: Strictly use within the rated specifications of the product to ensure stable power supply voltage and avoid overvoltage input; Do not arbitrarily expand I/O modules or peripherals beyond the rated quantity to avoid communication failures or decreased computing performance caused by excessive bus load;

Power on status taboo: When the device is powered on, it is strictly prohibited to touch any terminals or open the module housing to avoid electric shock or static electricity damage to the internal chip; Expansion modules or communication cables must not be plugged or unplugged during operation. If replacement or plugging is required, the power must be turned off first, otherwise the module may be damaged or program data may be lost; Static electricity in the human body may damage sensitive internal components. Before operation, it is necessary to comply with electrostatic discharge (ESD) regulations (such as wearing anti-static wristbands);

Exception handling standards: If abnormal heating, odor, communication interruption, or program execution is found in the module, the power should be immediately cut off, the use should be stopped, and authorized service providers of Yokogawa Electric should be contacted for maintenance. It is strictly prohibited to disassemble the module or modify the program by oneself; After troubleshooting, it is necessary to recheck the program integrity and module connection status, and only after confirming that there are no errors can the power be restored;

Regular maintenance requirements: Regularly (recommended every 6 months) check the firmness of module installation, the tightness of wiring terminals, and the degree of cable aging. Before inspection, the power must be turned off; Regularly backup user programs to prevent program loss; When cleaning the dust on the surface of the module, a dry and soft cloth should be used. It is strictly prohibited to use wet cloths or corrosive cleaning agents;

Program security requirements: User programs should be backed up regularly to avoid program loss due to module failures; When setting a program password, it is necessary to keep the password safe to prevent the program from being unable to be modified due to forgetting the password; When debugging programs, offline simulation should be performed first, followed by online debugging to avoid misoperation that may cause abnormal actions of on-site equipment;