自营P0972ZQ工业控制器模块

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逻辑、定时和顺序控制以及连接的现场总线模块（FBM）执行数据采集、报警检测和通知支持多达32个200系列FBM支持多达128个200系列的FBM，带有现场总线扩展模块100（FEM100）支持多达64个100系列FBM无需现场总线通信模块

通过标准光纤100 Mbps以太网连接到MESH控制网络使用坚固的压铸铝外壳可在G3级恶劣环境中工作

通过CE认证，可现场安装在外壳中。支持2 Mbps或268 Kbps HDLC现场总线，同时支持FBI200或FBI100，允许连接200系列和100系列FBM（影响支持的每种FBM的总数）。

使用两个控制模块提供独特的、获得利的容错操作，大大提高了与其他过程控制器相比的可靠性

使用通用控制算法和各种FBM，为广泛的过程应用提供控制能力

支持使用GPS卫星的可选外部时间进行时间同步

NI SCXI-1600（零件号：776572-1600）具有16位ADC，是SCXI的USB数据采集模块（DAQ）。该模块是SCXI数字I/O、开关、模拟输入和模拟输出模块的全功能控制和数据模块。其采样率为200kS/s。用户可以将SCXI-1600安装在仪表信号调节扩展（SCXI）机箱中，并为安装在机箱中的所有其他模块提供时钟、校准和外部数字触发器连接。使用此模块，用户可以将任何SCXI机箱转换为功能强大、可靠的即插即用数据采集系统。





NI SCXI 1600接收来自其他模块的模拟信号，并通过USB端口数字化、放大和传输数据。它是容易配置和校准的设备之一，因为它没有跳线、电位计或DIP开关。通过将其连接到其他SCXI模块，该模块可以从RTD、热电偶、应变计、电流源和电压采集多达352个模拟信号。





NI SCXI 1600与USB兼容，支持电源或热插拔USB端口。对于与时间相关的功能，数据采集模块使用一个称为National Instruments DAQ-STC的强大系统定时控制器。





为了控制模拟输入，DAQ-STC由三个定时组组成。该模块在前面板上配备了四个LED。有一组绿色LED用于监控机箱的V+和V-导轨。其他两个LED显示SCXI-1600数据采集模块的激活和就绪状态。为了进行校准，模块前面板上还提供了一个特殊的BNC连接器。





NI设备使用NIDAQmx驱动程序软件运行，该软件与软件包/应用程序开发环境（如LabVIEW、LabWIndows/CVI或Measurement Studio）兼容。建议预热时间为30分钟，每年至少应进行一次外部校准。NI设备的物理尺寸为7.2 x 6.8 x 1.2英寸。National Instruments SCXI-1349屏蔽电缆适配器





SCXI-1349（零件号：182671-01）用于将SCXI系统连接到数据采集设备。SCXI-1349电缆适配器将68针E系列DAQ设备（不包括61XXE型号）连接到SCXI模块（不包括SCXI开关模块）。此型号有三个连接器。首先，前面板上有一个68针公接头。接下来，印刷电路板上有一个50针厘米的连接器。后，在适配器的背面，有一个50针的支架来安装阴连接器。





美国国家仪器SCXI-1349需要几个项目：计算机、68针E系列DAQ设备、SCXI-1000、SCXI-1001或SCXI-1000DC机箱、至少一个SCXI模块（非SCXI开关模块）、小一字螺丝刀、安装指南和NI SCXI-1349-屏蔽电缆组件，包括电缆适配器和68针屏蔽电缆。SCXI-1349可与1米或2米SH68-68-EP屏蔽电缆一起使用，以将E系列设备连接到SCXI底盘。另一种选择是使用0.5米或1米SHC68-68-EP电缆或1米PSHR68-68电缆将DAQCard连接到SCXI机箱。SCXI-1349的大工作电压为30 Vrms、42 Vpk或60 VDC（信号+共模）。





用户必须确保每个信号连接都绝缘到NI SCXI 1349可能遇到的大电压。超过National Instruments SCXI-1349电缆适配器大信号额定值的接地电源信号和其他连接可能会导致触电或火灾。这也会损坏连接到SCXI机箱、计算机或SCX设备的电路板。





建议运行温度 logic, timing, and sequential control together with connected Fieldbus Modules (FBMs)Performs data acquisition and alarm detection and notificationSupports up to 32 of the 200 Series FBMsSupports up to 128 of the 200 Series FBMs with a Fieldbus Expansion Module 100 (FEM100)Supports up to 64 of the 100 Series FBMsNo Fieldbus Communication Module is required
Connects to The MESH control network via standard fiber optic 100 Mbps EthernetUses a rugged, die cast aluminum housingCan operate in Class G3 harsh environments
Is CE certified for field mounting in enclosuresSupports both the 2 Mbps or 268 Kbps HDLC fieldbuses simultaneously with the FBI200 or FBI100, allowing connections to both 200 Series and 100 Series FBMs (affects the total number of each type of FBM supported).
Offers unique, patented, fault-tolerant operation using two control modules to greatly improve reliability relative to other process controllers
Uses versatile control algorithms and a wide variety of FBMs to provide control capabilities for a broad range of process applications
Supports time synchronization using optional external time from GPS satellites
NI SCXI-1600 (Part No.: 776572-1600) has a 16-bit ADC and is a USB data acquisition module (DAQ) for SCXI. This module is a full-function control and data module for SCXI digital I/O, switch, analog input and analog output modules. Its sampling rate is 200 kS/s. Users can install the SCXI-1600 in the instrument signal conditioning expansion (SCXI) chassis, and provide clock, calibration and external digital trigger connection for all other modules installed in the chassis. With this module, users can transform any SCXI chassis into a powerful and reliable plug-and-play data acquisition system.



NI SCXI 1600 receives analog signals from other modules and digitizes, amplifies and transmits data through USB ports. It is one of the most easily configured and calibrated devices because it has no jumpers, potentiometers or DIP switches. By connecting it to other SCXI modules, the module can collect up to 352 analog signals from RTD, thermocouple, strain gauge, current source and voltage.



NI SCXI 1600 is compatible with USB and supports power supply or hot plugging into USB ports. For time-related functions, the data acquisition module uses a powerful system timing controller called National Instruments DAQ-STC.



In order to control the analog input, DAQ-STC consists of three timing groups. The module is equipped with four LEDs on the front panel. There is a set of green LEDs for monitoring the V+and V – rails of the chassis. The other two LEDs display the active and ready status of the SCXI-1600 data acquisition module. For calibration, a special BNC connector is also provided on the front panel of the module.



NI devices run using NIDAQmx driver software, which is compatible with software package/application development environment (such as LabVIEW, LabWIndows/CVI or Measurement Studio). The recommended warm-up time is 30 minutes, and external calibration should be carried out at least once a year. The physical size of the NI device is 7.2 x 6.8 x 1.2 inches. National Instruments SCXI-1349 shielded cable adapter



SCXI - 1349 (Part No.: 182671-01) was created for connecting the SCXI system to the data acquisition equipment. The SCXI - 1349 cable adapter connects the 68-pin E-series DAQ device (excluding the 61XXE model) to the SCXI module (excluding the SCXI switch module). This model has three connectors. First, there is a 68-pin male connector on the front panel. Next, there is a 50-pin centimeter connector on the printed circuit board. Finally, on the back of the adapter, there is a 50-pin bracket to install the female connector.



The US National Instrument SCXI-1349 requires several items: a computer, a 68-pin E-series DAQ device, a SCXI-1000, SCXI-1001 or SCXI-1000DC chassis, at least one SCXI module (not the SCXI switch module), a small slotted screwdriver, installation guide and NI SCXI-1349 shielded cable assembly, which consists of cable adapter and 68-pin shielded cable. The SCXI - 1349 can be used with 1 m or 2 m SH68-68-EP shielded cable to connect the E series equipment to the SCXI chassis. The other option is to use 0.5 m or 1 m SHC68-68-EP cable or 1 m PSHR68-68 cable to connect the DAQCard to the SCXI chassis. The maximum operating voltage of SCXI - 1349 is 30 Vrms, 42 Vpk or 60 VDC (signal+common mode).



The user must ensure that each signal connection is insulated to the maximum voltage that NI SCXI 1349 may encounter. Grounding power signals and other connections that exceed the maximum signal rating of the National Instruments SCXI-1349 cable adapter may cause electric shock or fire hazard. This can also damage the circuit board connected to the SCXI chassis, computer or SCX device.



The recommended operating temperature range of NI equipment is 0 to 50 ° C, the storage temperature range is – 20 to 70 ° C, and the non-condensing relative humidity range is 10 to 90%. Its design conforms to IEC 61010-1, UL 3111-1 and CAN/CSA C22.2 No. 1010.1 of electrical measurement and test equipment. National Instruments SCXI-1346 Multi-Chassis Cable Adapter



SCXI - 1346 (Part No.: 776574-46) is suitable for applications involving multiple chassis SCXI, because it can connect them to a DAQ device. This cable adapter has two cable connections. One connection is used for the signal from the digitizer or the previous SCXI chassis, while the second connection is used to route the signal from the digitizer to the subsequent chassis. SH68-68 - EP (Part No.: 184749-01, 1 m cable; 184749-02, 2 m cable; 184749-05, 5 m cable; or 184749-10, 10 m cable) can be purchased separately and with NI SCXI 1346. This cable adapter has a mounting bracket that can be reliably connected to the SCXI chassis.



The SCXI 1346 has four connectors. The first connector is the 68-pin male connector on the front panel, which is printed with To Next Chassis. The next connector is another 68-pin male connector on the front panel, which is printed with From DAQ Board or Previous Chassis. The third connector is the 50-pin centimeter connector on the printed circuit board. The last connector is also a 50-pin connector, but it is the bracket mounting female on the back of the cable adapter.



Using NI SCXI 1346 in a multi-chassle system requires the following items: a computer, a small flat-head screwdriver, a 68-pin shielded cable, a 68-pin E-series DAQ device, a SCXI 1001 or SCXI 1000 chassis (version K or later), one or more SCXI modules per chassis (excluding SCXI-1127, SCXI-1190 and SCXI-1191), SCXI 1349 shielded cable assembly, and SCXI-1346 installation guide. Users should keep in mind that the total cable length used in the multi-case SCXI system should not exceed 10 m. This will help ensure reliable operation.



SCXI 1346 runs with NI-DAQmx driver software compatible with the package/application development environment (ADE), such as LabVIEW, LabWindows, LabVIEW SignalExpress, Measurement Studio, Visual C++, or Visual Basic. You can use the National Instruments Measurement&Automation Explorer (MAX) tool to configure the device hardware.
In the whole PLC control system, the site is the most prone to failure, and the site is the most prone to failure in the following aspects.



1. The first type of fault point is also the most fault point) in relays and contactors



For example, in the daily maintenance of the PLC control system of a production line, the largest consumption of electrical spare parts is various relays or air switches. In addition to the quality of the product itself, the main reason is that the site environment is relatively bad. For example, the contacts of contactors exposed to the production environment are easy to ignite or oxidize, and gradually heat and deform until they cannot be used. All on-site control boxes of the production line are made of panels and cabinets with good tightness, and the service life of its internal components is significantly longer than that of other open panels and cabinets. Therefore, to avoid such failures, high-performance relays should be selected as far as possible, and the use environment of components should be improved to reduce the frequency of replacement and reduce the impact on system operation.



2. The second type of fault frequently occurs on equipment such as valves or rams



Because the relative displacement of the actuator of such equipment is relatively large; Or the transmission structure is complex, and if the mechanical, electrical, hydraulic and other links are not in place, errors or faults will occur. Under long-term operation, if there is no operation and maintenance, it is easy to cause jamming, blocking and leakage of valve body parts. Therefore, when the system is running, it is necessary to strengthen the patrol inspection of such equipment and timely handle the problems found. Our factory has established a strict point inspection system for such equipment, regularly checking whether the valve is deformed, whether the actuator is flexible and available, and whether the controller is effective, which well ensures the effectiveness of the entire control system.



3. The third type of fault point may occur on some elements or equipment in switch, limit position, safety protection and field operation



The reason may be due to long-term wear, or corrosion and aging due to long-term use. For example, the distribution cart on the kiln tail ball storage of the production line moves frequently, and the dust on the site is large, so the contact of the proximity switch is deformed, oxidized, and blocked by dust, resulting in poor contact of the contact or insensitive action of the mechanism. The treatment of this kind of equipment failure is mainly reflected in regular maintenance to keep the equipment in good condition at all times. For limit switches, especially those on heavy equipment, in addition to regular maintenance, multiple protection measures should be added in the design process.



4. The fourth kind of fault point may occur in the sub-equipment of PLC system



Such equipment as junction box, wire terminal, bolt and nut, etc. The causes of such failures are not only related to the manufacturing process of the equipment itself, but also related to the installation process. For example, some people think that the tighter the wire and screw connection is, the better, but it is easy to cause difficulties in disassembly during secondary maintenance, and it is easy to cause damage to the connector and its nearby components during heavy disassembly. Long-term sparking and corrosion are also the causes of the failure. According to engineering experience, such failures are generally difficult to find and repair. Therefore, the installation and maintenance of the equipment must be carried out according to the installation process required by the installation, without leaving any hidden danger of the equipment.



5. The fifth type of fault points are sensors and instruments



This kind of fault is generally reflected in the abnormal signal in the control system. When installing this kind of equipment, the shielding layer of the signal line should be reliably grounded at one end, and should be laid separately from the power cable as far as possible, especially the frequency converter output cable with high interference, and software filtering should be carried out inside the PIC. The discovery and handling of such failures are also related to routine patrol inspection. Problems found shall be handled in time.



6. The sixth type of fault is mainly the noise (interference) of power supply, ground wire and signal wire



The solution or improvement of the problem mainly depends on the experience in engineering design and observation and analysis in daily maintenance.



In order to reduce the failure rate, it is very important to pay attention to the process and safety operation procedures of the factory, abide by the process and safety operation procedures in daily work, strictly implement some relevant regulations, such as maintaining the environment of the centralized control room, etc., and strengthen the management of these aspects in production.



The process control system itself is a complete system, so it is also necessary to pay attention to the systematicness when analyzing or dealing with faults. The optimization of a certain part alone sometimes cannot improve the overall performance of the system. If the precision of components is excessively pursued without considering the actual needs and matching with the precision of relevant equipment, the system cost will be increased in vain. In daily maintenance, there has also been the phenomenon of changing the system more and more complex. For example, using complex control methods and equipment to achieve the control that could be achieved with simple devices violates the principles of economy, simplicity and practicality, and may increase the failure rate. This is also the place to be noted.