FBM216b P0927AJ FOXBORO 通信冗余输入接口模块

FBM216b P0927AJ FOXBORO 通信冗余输入接口模块

可控停车器PLC控制电路根据新的可控停车器的故障导向原则，结合现代化编组场作业要求，可控停车器的控制系统在满足停车器动作要求的前提下，还要能适应驼峰尾部自动化要求。

我们就根据这些要求确定可控停车器控制系统的设计思路如下:结构简单、使用维护方便、降低一次性投资成本和运行维护成本;能够适应可控停车器的各种结构形式和动力形式;具有信号安全电路的功能，符合可控停车器故障导向安全要求;既可以纳入尾部联锁，也可以立成系统使用。

在满足这些要求的前提下，通过方案比选，我们选定了PLC可编程控制器作为核心器件的可控停车器控制系统。前面我们介绍过PLC可编程控制器本身是不具备故障导向安全功能的。

即PLC可编程控制器虽然带有记忆单元，但在本机断电和报警时（自诊断错误)，其输出将全部归零。所以采用PLC可编程控制器的控制电路的故障一安全技术和可控停车器结构上的故障一安全技术相结合来实现可控停车器PLC可编程控制系统的故障—安全技术。

According to the fault guidance principle of the new controllable parking device, combined with the operation requirements of modern marshalling yard, the control system of the controllable parking device can meet the operation requirements of the parking device, but also adapt to the automation requirements of the hump tail.

According to these requirements, we determine the design ideas of the controlled parking device control system as follows: simple structure, easy use and maintenance, reduce one-time investment costs and operation and maintenance costs; It can adapt to various structural forms and dynamic forms of the controllable parking device; It has the function of signal safety circuit and meets the safety requirements of fault guidance of controllable parking device. Can be incorporated into the tail interlock, or can be used as a system.

On the premise of meeting these requirements, through the scheme comparison, we selected PLC as the core device of the controllable parking device control system. Previously we introduced the PLC programmable controller itself does not have the fault oriented safety function.

That is, although the PLC has a memory unit, its output will all return to zero when the machine is powered off and alarms (self-diagnostic errors). Therefore, the fault-safety technology of PLC programmable controller control circuit and the fault-safety technology on the structure of controllable parking device are combined to realize the fault-safety technology of PLC programmable control system of controllable parking device.