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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。
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产品详情内容介绍
PM5301直流驱动电源板
该模块采用八个高可靠性汞湿继电器来控制负载。
八个输出端中的每一个都与I/O总线和其他输出端电气隔离继电器线圈的七个输出。这些输出能够切换100 VA与交流或直流负载相关的最大瞬时功率。此类设备可能范围从继电器和指示灯到多路低电平模拟信号。
每个输出都有一个RC缓冲器，以保护水银接触触点不产生电弧由感应负载施加的电压快速上升引起触点瞬时断开。输出信号可以承受严重的工业环境中可能遇到的电压瞬变，即电压瞬变不会通过继电器传播到Ourbus，从而保护所有其他控制器系统部件不受损坏。所有输出电路也熔断以防止过载电流。简化示意图
以下是B840–108继电器输出模块的简化示意图。
模块可由用户配置，可设置为常开或常开继电器的闭合操作如下所述。
您还可以选择配置当最小泄漏电流应用时
移除RC缓冲电路随着数据多路复用的使用。
逻辑接口芯片同时从PLC在每次扫描时都会保存这些样本，以驱动相应的簧片继电器线圈。
假设为常开跳线配置，当继电器线圈通电后，簧片继电器触点将电流从输出A端子传导至输出B端子。
该模块在用户连接的刚性布线系统中执行连接到卡篮前面的接线板。
I/O模块滑入卡篮的插槽，并通过配合与端子排接触连接器。
用户连接到能够固定的标准螺钉型端子
每个端子最多两根AWG 14实心或绞线。端子编号自顶部一个，底部20个，如图所示。
数据总线连接通过标准OURBUS接口连接器进行卡篮后部的屏蔽背板。
模块可以放置在I/O指令的任何位置，而不干扰任何其他模块活动当模块插入卡篮时，它会拾取一个低通过将模块屏蔽连接至底板的接地屏蔽接地。
端子编号和输出连接下图显示了电源应用的典型电路连接B842–008模块。注：由于每个输出都与其余输出隔离，因此应分开电源每个负载都可以使用源。每个输出可以连接到电流源或当前接收器操作。
注：可以使用一个或多个输出通道点亮活动指示灯工作不正常。
Simplified Schematic Diagram
Following is a simplified schematic diagram of the B840–108 relay output module. The module is user–configurable as to setting up for normally–open or normally– closed operation of the relays as described below. You can also optionally configure the RC snubber circuit to remove it when minimal leakage current applications such as data multiplexing are being used. The logic interface chip samples the eight logic level signals simultaneously from the PLC on each scan and holds these samples to drive the appropriate reed relay coil. Assuming a normally–open jumpered configuration, when the relay coil is energized, the reed relay contacts conduct current from the output A terminal to the output B terminal.
The module utilizes eight high–reliability mercury–wetted relays to control the loads. Each of the eight outputs is electrically isolated from the I/O bus and from the other seven outputs by the relay coil. These outputs are capable of switching 100 VA maximum instantaneous power associated with ac or dc loads. Such devices may range from relays and pilot lamps to multiplexed low level analog signals. Each output has an RC snubber to protect the mercury wetted contacts from arcing caused by rapid rate of rise of applied voltage from inductive loads upon instantaneous opening of the contacts. The output signals can withstand severe voltage transients that may be encountered in industrial environments—i.e., the voltage transients will not propagate through the relay to the Ourbus, thus protecting all other controller system components from damage. All output circuits are also fused to protect against overload currents.
Field Connections
This module performs in a rigid wiring system where the user connections are made to terminal strips attached to the front of the card basket. The I/O modules slide in slots of the card basket and make contact with the terminal strips via the mating connector. User connections are made to standard screw-type terminals capable of securing up to two AWG 14 solid or straded wires per terminal. Terminals are numbered from one at the top to 20 at the bottom as shown in the figure. The data bus connections are made via the standard OURBUS interface connector to a shielded backplane at the rear of the card basket. The module may be placed in any location in the I/O struction without interfering with any other module´s operation. When the module is inserted into the card basket, it picks up a low impedance earth shield ground by connecting the module´s shield to the backplane´s earth shield ground. Terminal Numbering and Output Connections The following figure shows typical circuit connections for power applications of the B842–008 module.
