公司主营产品图展示
产品优势
1：国外专业的供货渠道，具有价格优势
2：产品质量保证，让您售后无忧
3：全国快递包邮
4：一对一服务
公司主营产品文字介绍
PLC可编程控制器模块，DCS卡件，ESD系统卡件，振动监测系统卡件，汽轮机控制系统模块，燃气发电机备件等，优势品牌：Allen Bradley、BentlyNevada、ABB、Emerson Ovation、Honeywell DCS、Rockwell ICS Triplex、FOXBORO、Schneider PLC、GE Fanuc、Motorola、HIMA、TRICONEX、Prosoft等各种进口工业零部件、欧美进口模块。
产品广泛应用于冶金、石油天然气、玻璃制造业、铝业、石油化工、煤矿、造纸印刷、纺织印染、机械、电子制造、汽车制造、塑胶机械、电力、水利、水处理/环保、锅炉供暖、能源、输配电等等
产品详情内容介绍
P-HC-BRC-10000000中间控制器
配置概述B814最初出厂时，所有八个通道都跳线用于常开配置您可以选择连接任何常闭通道操作（如果需要）。这是通过将跳线从一个标签转移到另一个在印刷电路板上。请参阅模块侧面的标签。下表显示了设备的用户配置接线/标签名称。B814–108继电器输出模块将来自PLC的信号转换为8个独立继电器输出。每个输出都能够驱动继电器、指示灯、电机起动器、电磁阀或任何其他负载高达5.0 A。八个输出中的每一个都是继电器与I/O总线和其他七个输出端电气隔离线圈该模块设计用于承受典型的工业浪涌电流荷载。
用户可配置模块的常开或常闭设置继电器的操作如下所述，并与其他输入兼容模块。假设为常开配置，当继电器线圈通电时，继电器触点将电流从输出A端子传导到输出B端子（参见下图）当电压超过阈值电路电压要求时，电流将通过精密衰减器流经阈值开关和光隔离器桥式整流器。通过隔离器耦合的输出脉冲是平均的，因此内部电路通态条件的稳态直流电压表示由模块逻辑侧的Ourbus芯片（OBS）检测。
Ourbus输出寄存器被设置为表示字段打开状态。
只要田地输入状态保持为真，模块将在每次输入时传递此状态由PLC轮询。B837–016 24 Vac/Vdc（真高）输入模块检测到开和关输入信号并将其转换为Modicon PLC使用的逻辑电平。这个模块的16个输入分为两组，每组八个通道与他人完全隔绝。
虽然这两组都使用公共回路线，但没有一组与系统接地，除非在用户现场电路中建立。由于两组名义上采用独立的电源回流源，包括交流和直流电源电路可同时输入模块。
简化示意图以下是B837–016 24 Vac/Vdc（真高）的简化框图输入模块。
当用户的交流/直流电源励磁电路接通时-由于限位开关例如，它显示了模块适当输入处的现场电源电压频道当输入电压达到或超过模块的保证值时阈值，产生的电压打开通道监控灯，电流流动通过桥式整流器，然后通过光隔离器（opto-ISOL）电路。给定标称24 V现场电源和1000Ω最大输入电源阻抗，当对于高电平，电压为20.4 Vac/19.2 Vdc；低电压为6 Vac/10 Vdc分别调平。光能进入通信板（COMMBOARD），其中Ourbus输出寄存器被设置为表示现场电路开启状态只要字段输入状态保持为真，模块就会通信控制器每次轮询它时的状态。
注：外部信号极性的反转不会导致通道电路损坏，因为电路设计与意外极性反转无关。
Configuration Overview
The B814 is initially shipped with all eight channels jumpered for the normally-open configuration. You may optionally wire any of the channels for normally-closed operation if desired. This is done by transferring a wire jumper from one tab to another on the printed circuit board. Refer to the label on the side of the module. The following table shows the user configuration wire/tab designations for the unit.
The B814–108 relay output module converts signals from the PLC to eight independent relay outputs. Each output is capable of driving a relay, pilot lamp, motor starter, solenoid, or any other load up to 5.0 A. Each of the eight outputs is electrically isolated from the I/O bus and from the other seven outputs by the relay coil. The module is designed to withstand the high surge currents typical of industrial loads. The module is user-configurable as to setting for normally-open or normally-closed operation of the relays as described below, and is compatible with other input modules. Assuming a normally-open configuration, when the relay coil is energized, the relay contacts will conduct current from output A terminal to output B terminal (see the following figure)When the voltage exceeds the threshold circuits voltage requirement, current will flow through the threshold switch and opto-isolator via the precision attenuator and the bridge rectifier. The output pulses coupled through the isolator are averaged so that a steady state dc voltage representation of the inner circuit’s on–state condition is sensed by the Ourbus chip (OBS) on the logic side of the module. The Ourbus output register is set to represent the field on state. As long as the field input status remains true, the module will communicate this status each time it is polled by the PLC.
B837–016 24 Vac/Vdc Input (True High), Overview
The B837–016 24 Vac/Vdc (True High) input module senses off and on input signals from its field circuitry and converts them to logic levels used by a Modicon PLC. The module’s 16 inputs are separated into two groups of eight channels, each group being totally isolated from the other. Although both groups use common return wires, none has a definite relationship to system ground unless established in the user’s field circuitry. Since both groups nominally employ independent power return sources, both ac and dc powered field circuits may input to the module at the same time. Simplified Schematic Diagram Following is a simplified block diagram of the B837–016 24 Vac/Vdc (True High) input module. When the user’s ac/dc powered field circuit goes on - as the result of a limit switch for example - it presents the field power voltage at the modules appropriate input channel. When the input voltage meets or exceeds the module’s guaranteed on threshold, the resulting voltage turns the channel monitor lamp on, current flows through the bridge rectifier and subsequently the opto-isolator (OPTO-ISOL) circuit. Given a nominal 24 V field power supply and 1000Ω maximum input source impedance, the module’s channel monitor lamps will indicate on and off when voltages are 20.4 Vac/19.2 Vdc for the high level on; and 6 Vac/10 Vdc for the low level off respectively. The optical energy goes to the communications board (COMM BOARD) where the Ourbus output register is set to represent the field circuit’s on state. As long as the field input status remains true, the module will communicate this status each time it is polled by the controller. NOTE: Reversal of external signal polarity will not cause channel circuit damage as circuit design is indifferent to accidental polarity reversal.
