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Ovation D903900G07开关量输出电子模件

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Ovation D903900G07开关量输出电子模件

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型号:D903900G07
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Ovation  D903900G07开关量输出电子模件 Ovation  D903900G07开关量输出电子模件 Ovation  D903900G07开关量输出电子模件
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Ovation  D903900G07开关量输出电子模件 Ovation  D903900G07开关量输出电子模件 Ovation  D903900G07开关量输出电子模件
生产工艺
恒速恒压泵主要由高压柱塞泵泵体、丝杠传动机构、齿轮传动机构、气动阀、储液罐、伺服电机及驱动器等部分组成。恒速恒压泵分为单泵和双泵,本文主要讲述双泵。恒速恒压双缸泵主要分为单缸运行、双缸串联和双缸并联三种工作模式,每一种工作模式可分为恒流和恒压两种工作方式。
1)单缸运行的工作原理如下:以A泵运行为例,显示A泵各项参数,对A泵进行进退泵操作。A泵进泵,A泵出口阀打开,A泵吸口阀关闭,压力达到保护压力时停泵,位置达到上限位时停泵。A泵退泵,A泵出口阀关闭,A泵吸口阀打开,位置达到下限位时停泵。若A泵有压力,退泵时A泵吸口阀要在压力退至零时打开。进退泵可实时进行切换,B泵单缸运行同A泵。

图2.单缸运行的工作原理
双缸运行的工作方式是运用多也是重要形式,即双缸串联恒压和双缸串联恒流,两个缸体相互配合和切换,以达到连续供液的目的。
2)双缸串联恒压模式。先把两个泵退到底,两个泵都退泵时,两个吸口阀都打开,两个出口阀都关闭,任何一个泵体到底后都需等待10秒钟,以利于液体充分吸入泵中,然后关闭吸口阀,进入准备工作状态。以A泵先启动为例,A泵出口阀打开并进泵,B泵实时跟踪A泵压力。当A泵运行至上限位时开始换泵,B泵出口阀打开,A泵出口阀关闭,由B泵提供压力恒定的动力源。A泵退泵,当A泵中压力减小至零时,打开A泵进口阀,继续退泵(A泵退泵速度要大于B泵进泵速度)吸液,A泵退至下限位后停泵并等待10秒钟,然后关闭其吸口阀。然后A泵开始跟踪B泵压力(要确保在完成这一过程时B泵未到上限位)。当B泵运行至离上限位时,开始换泵,过程同A泵切换到B泵一样。这样就进入循环换泵状态,可达到恒压连续出液的目的;

图2.双缸串联恒压模式
3)双缸串联恒流模式。以A泵先启动为例,A泵出口阀打开并进泵,B泵实时跟踪A泵压力。当A泵运行至离上限位还有10mm时开始换泵,B泵出口阀打开,A泵开始减速,B泵同时加速。mainly formed by the cascade of power grid, the potential difference between the ground and the common state (same direction) voltage induced by space electromagnetic radiation on the signal line. The common mode voltage is sometimes large, especially in the electrical power supply room with poor isolation performance. The common mode voltage of the transmitter output signal is generally high, and some can be as high as more than 130v. Common mode voltage can be converted into differential mode voltage through asymmetric circuit, which directly affects the measurement and control signal and causes component damage (this is the reason for the high damage rate of I / O modules in some systems). This common mode interference can be DC or AC. Differential mode interference refers to the interference voltage between the two poles of the signal, which is mainly formed by the coupling induction of space electromagnetic field between signals and the conversion of common mode interference by unbalanced circuit. This interference is directly superimposed on the signal and directly affects the measurement and