MAX14914PMB#

MAX14914PMB это периферийный модуль, предназначенный для оценки характеристик микросхемы MAX14914 представляющей собой двухтактный драйвер верхнего плеча, который может использоваться как в качестве промышленного дискретного выхода, так и входа
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DESIGN SOLUTIONS INDUSTRIAL Finally – Digital IO Means Digital IO! Introduction Industry 4.0 is a new byword for the modern factory environment. It consists of dozens of networked controllers continuously monitoring inputs from hundreds or even thousands of sensors such as switches and level detectors. Simultaneously, signals are sent to a similar number of output devices such as valves, solenoids or motor drives. In this design solution, we discuss how electronic marshalling has simplified the process of connecting this expanding set of field wiring back to the controller. We then present an innovative solution which introduces a new degree of flexibility to the electronic marshalling approach. Wired Marshalling Until recently, the standard way of connecting field I/O devices to a programmable logic controller (PLC) has been through traditional wired marshalling as illustrated in Figure 1. Multicore cables run wires from the field devices located on the factory floor to the terminal blocks of marshalling panels, usually located in an I/O room. Here, the wiring is crossmarshalled so that each field device is connected to the I/O card of the appropriate controller channel. wires are coming from and going to, leading to errors if wires are incorrectly connected or even left completely unconnected. Debugging and testing each connection can be time-consuming and laborious for technicians and engineers alike, potentially introducing costly delays to the commissioning of a new process. In theory, once debug is complete, the system should run correctly but additional problems can emerge if unforeseen changes are required late in the project. Sometimes it may be necessary to add a new field device. For example, if a temperature switch is changed to a temperature transmitter, then a digital input will need to be changed to an analog input. An even worse situation occurs if new field devices are added to the system but the marshalling panel does not have enough spare connections of the required type to accommodate them. In this case, the controller would need to be replaced, potentially adding additional cost and delay to the project. Electronic Marshalling Wired marshalling has begun to be replaced by electronic marshalling, a new approach to signal routing in process automation (Figure 2). DC Power Backplane Valve (Factory Floor) Electronic Marshalling via Digital Bus Each slot contains dedicated DI/DO Card Actuator (Factory Floor) Valve (Factory Floor) Actuator (Factory Floor) Sensor (Factory Floor) Sensor (Factory Floor) Figure 1. Wired Marshalling Figure 2. Electronic Marshalling This approach has the potential to cause problems. For example, during cross-marshalling, it is difficult to keep track of which This technique was developed to prevent the human errors associated with the manual element of wired marshalling, www.maximintegrated.com/design-solutions 1 PDF
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Finally – Digital IO Means Digital IO! The MAX14914 is a high-side/push-pull driver that operates as both an industrial digital output (DO) and an industrial digital input (DI)

Дата модификации: 21.11.2019

Размер: 164.4 Кб

3 стр.

Evaluates: MAX14914 MAX14914 Peripheral Module General Description The MAX14914 peripheral module provides the hardware to evaluate the MAX14914 high-side/push-pull driver that operates as both an industrial digital output (DO) and an industrial digital input (DI). Refer to the MAX14914 IC data sheet for detailed information regarding operation of the IC. The module can be used in various ways; Maxim sells a low-cost USB2PMB1 adapter board that uses the Munich GUI software for communication through a USB cable. This is not included with this board. Alternatively, any TM microcontroller or FPGA with a 12-pin Pmod -compatible connector can be used, but the user needs to adapt the signalling because this is not a standard SPI port. Another option for the user is to wire-wrap a temporary connection from their system to the pins on connector X1. Contents ●● MAX14914PMB with the MAX14914 Features ●● Easy Evaluation of the MAX14914 ●● Configurable as a Digital Input or a High-Side or Push-Pull Digital Output ●● Accurate Internal Current Limiter for Types 1, 2, and 3 Digital Inputs ●● Support High-Side Current Up to 1.3A with External 24V Supply ●● Adjustable Short-Circuit Current Limit ●● Safe-Demagnetization for Safe Turn Off of Unlimited Inductance ●● Works with USB2PMB1 Adapter and Munich GUI Software ●● Fully Assembled and Tested ●● Proven PCB Layout ●● RoHS Compliant Ordering Information appears at end of data sheet. MAX14914PMB Pmod is a trademark of Digilent Inc. 19-8794; Rev 0; 3/17 PDF
Документация на MAX14914PMB# 

Дата модификации: 08.03.2019

Размер: 662.2 Кб

9 стр.

    Публикации 3

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    16 августа 2019
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    Промышленные цифровые входы и выходы. Часть 3. Программируемые цифровые выходы

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    23 апреля 2019
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    Входные/выходные дискретные сигналы в электроэнергетике: принципы, модули и микросхемы

    Микропроцессорные устройства релейной защиты, автоматики или АСУ ТП электрических станций невозможно реализовать без модулей дискретных входов и выходов, от которых напрямую зависит взаимодействие оборудования и надежность всей системы в целом.... ...читать

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