G040-123伺服阀检测仪说明书

APPLICATION NOTES VALVE CHECKER G040 123 伺服阀检测仪说明书伺服阀检测仪说明书 型号型号G040 123 翻译 许国超 本文件供参考 2010年6月 CONTENTS 目录目录 Chapter Title Page 扉页扉页 1 Description 3 产品描述 3 2 Specification 7 规格说明 3 Quick Start 9 快开 4 Connecting to valve and plant 11 阀的设备连接 5 Plant mode operation in line 12 工作模式操作 在线 6 Checker mode operation stand alone 15 检测模式操作 离线独立 7 External 24V supply 17 外部供电24V 8 Valve performance checks 18 阀性能检测 9 Block diagram 20 流程图 DESCRIPTION 产品描述产品描述 1 1 The Moog G040 123 Valve Checker is an instrument capable of checking the flow control function of nearly the complete range of Moog electrical feedback efb proportional and servo valves Mechanical feedback mfb and pressure control valves are not catered for by the G040 123 穆格 G040 123型伺服阀监测仪是一种能对穆格阀就近能对阀的流量控制 比例 阀和伺服阀电气信号反馈检测的仪器 带机械反馈的压力控制阀不能用G040 123 型检测仪 The feature that makes it so versatile is the way it can test a valve while the valve is still installed in its normal operating plant This is done at two levels in line and stand alone 这种仪器特点能对安装在阀台上正常工作的阀门进行多方面的检测和操作 这 里有两种测试方式 在线检测和独立检测 1 1 1 Plant In Line 工厂工作 在线检测 工厂工作 在线检测 As in fig a the plant and valve operate normally In fig b the Valve Checker is connected between the plant electronics and the valve such that all the plant electronics signals to and from the valve are connected as normal The Valve Checker monitors the plant electronics signals and the signals back from the valve enabling a check of the valve s performance 图a为电气线路与控制阀通常连接方式 图b为伺服阀检测仪串联在电气线路 和控制阀总电气线路之间 保证阀输出输入线路在正常状态 检测仪器能检测电气 信号和输入给阀信号 来检测阀的性能 1 1 2 Checker Stand Alone 检测模式 独立检测 检测模式 独立检测 In this mode the plant command is switched out while the Valve Checker generates the command to the valve and monitors the signals back from it The valve remains installed in the plant but the plant command signals are disconnected Checking while still installed in the plant provides the added benefit of checking the valve by observing the reaction of the plant to the Valve Checker s commands 在这个模式下操作 工厂工作指令被断开 检测仪的控制信号输给阀 阀的反馈信 号在回到检测仪 尽管检测仪还串联在电路中 但工作的信号已经被断开 检测的 同时 可以由检测员给出指令来监测被测阀的动态变化 1 2 The Valve Checker is powered by the plant electronics which also continue to supply the valve in both plant and checker modes of operation As well there is a 24V DC power connector on the front panel for 24V DC and 15V DC powered valves without connection to the plant electronics power 1 2检测仪的供电源由原电路供给 同时能继续提供给被检测的阀在 工作 和 检测 模式操作提供电源 同样这里的24V直流电源可以提供阀电子元件所需的 24V直流电源或 15V 直流电源 无须外接其它的电器电源 1 3 Two cables connect the Valve Checker to the plant electronics and valve Each of the Valve Checker models is dedicated to a power supply voltage and connector type It is necessary to select the model type that has the correct connector and supply voltage The table below shows the model numbers and their supply connector types 1 3连接在检测仪的两条电气线一条接供给的电线 另一条接被检测阀的上 不论 检测仪那个模式下都是这样连接来提供电源电压和连接方式 接头一般类型一样 对于必须要选择类型的要纠正连接类型和提供的电源电压 下表提供的是型号和电 源电压参数 Model dash number table 零件模块参数表 Model dash 型号 connector 接头 插接件 supply 供给 1 4 There are six functional blocks on the front panel 在面板上有六个的功能模块 1 Q Command 电流指令 4 Control 控制 2 Spool 滑阀 5 Enable 开启 允许 3 Power 电源 6 Valve Connector 阀连接接口 1 4 1 Q Command 电流指令 This block is active only when checker mode is selected The rotary pot adjusts the Q command level 只有在选在 检测模式 下这部分模块才能投入使用 旋转钮是调整电流的大小 量的 The grey test point gives a 0 to 10V signal proportional to the actual voltage or current being delivered to the valve The rotary selector switch selects the signal type that is connected to the valve 这个灰色的测电位点提供0V 10V成比例的输出真是电信号 信号主动传递给被 检测的阀件 旋转的扶手开关选着输给阀信号的类型 The switch connects the valve Q command signal to the non inverting ve gives P A and inverting ve gives P B inputs 这个 开关是连接阀的Q指令开关 开关在 位置 阀给油P A 输入 在 位置 阀给油P B 输入 1 4 2 Spool滑阀滑阀 The spool position signal from the valve is always available at the green spool test point and passed on to the plant electronics regardless of the mode of operation The green spool test point gives a 0 to 10V signal proportional to the spool signal from the valve The LED display to the left of the test point provides a rudimentary indication of the signal The centre blue null LED will be illuminated when the spool signal is less than 10 不论哪种控制模式下 从阀来的阀芯位置信号总是在测试点上呈绿色 这些绿色测 试点上的电信号与提供的0 10V电信号成正比例 LED指示灯显示左边的测试点 的迹象 提供了一个初步的信号 中心蓝色的LED零位指示灯在阀芯电信号小于10 时 才亮 An understanding of the checker load switch is important for successful use of the Checker when the spool signal is a current 10mA or 4 20mA When the valve has a current output there must be a path through which the current can flow for the Checker to be able to measure the current When the plant lectronics do no provide this load or the Checker is not connected to the plant electronics the Checker load switch connects a 100 Ohm load to ground 0V on the spool signal enabling a current to flow 检查员了解负荷开关 并成功运用的检查是很重要的 当滑阀的信号电流 10mA 或 4 20mA 当阀门具有一个输出电流必须有能检测测量当前流通的电 流 当电路不提供负荷 或者检查没有连接的到电路的电子原件 检测员要把负荷 开关连接到100欧姆负载到接地 0V 使电流信号流通 才能检测 Note that a six position rotary switch is used to select the five feedback signals The fifth and sixth positions both select 4 20mA signal 注 6个位置旋转开关是用来选择五个反馈信号的 第五档位和第六档位4 20mA都 选择位置信号 1 4 3 Power 电源电源 1 4 3 1 24V models 24V模式模式 The 24V LED illuminates with both plant 24V and the external 24V supply The external 24V is connected via the large black connector below the LED 这里24V LED显示灯电源有工厂工作的24V电压电源或者有外部24V电压电源提 供电源 外部电源连在24V LED显示灯下面大的黑色插孔上 The checker LED indicates the internal 15V supply is healthy This supply is used to power only the Valve Checker internal electronics The valve and internal 15V regulators are always powered by the external 24V regardless of the presence of plant 24V When there is no external supply the plant 24V powers the valve and internal regulators 检测员LED指示灯正常工作是由 15V的内部电压提供 这个电压仅用于提供检测 仪内部电子元件使用 不管有24V工厂工作电源 或没有外部电源提供24V工厂电 源提供给阀和调节器 15V的电压和阀工作的24V电压都是由外部24V电源提供 1 4 3 2 15V models 15V模式模式 The 24V LED illuminates when the external 24V supply is connected The plant 15V LED s illuminate when the plant 15V supply is present The checker LED indicates the internal 15V supply is healthy When the checker is powered from the plant 15V the valve is powered from that supply as well 24V LED指示灯亮是表示与外部24V电压电源连接通 当工厂现场提供的 15V电 压电源时 15V LED指示灯会亮 检测仪的显示内部电压 15V供应正常 如果检测 阀的工作电压是 15V 那么这也能正常提供阀检测使用 When external 24V is present the checker internal regulators are powered from that supply regardless of the presence of the plant supply and the valve in turn is powered form the internal regulators 当外部提供24V电压 检测器的内部调节稳压来自这个电源 不管工厂提供阀的工 作电压都要通过检测仪的内部处理器后供给阀 1 4 4 Control 控制控制 This switch selects the two operating modes 旋转开关可以选择两个操作模式 In Checker mode valve Q commands and valve enable are generated by the Checker with the valve generated signals of spool position enable OK and valve OK available to be monitored on the Valve Checker test points and passed back to the plant electronics 在检测模式下 检测员可以操作Q指令和使被检测阀动作 产生作用阀的电信号和 阀芯位置的检测信号 来判断使用和阀状态正常 检测员可以在监测检测点上记录 下输入输出的电信号的信息 In Plant mode valve Q commands and valve enable are generated by the plant electronics with the valve generated signals monitored in the same way as in checker mode 在工厂工作模式下 阀门的Q指令和阀门产生电信号通过工厂电气设备 阀的检 测信号产生的方式和 检测模式 产生是一样的 Note that a three position rotary switch is used to select between checker and plant modes The first and second positions both select plant mode 注 三个位置旋转开关是用来选择检查者 之间 工厂模式 第一和第二位置都选厂的模式 1 4 5 Enable 启动启动 The enable LED illuminates when the enable signal to the valve is positive The enable signal to the valve comes from the plant electronics when plant mode is selected When checker mode is selected it comes from the enable on switch However the enable to the valve can be turned off by selecting master off when either plant or checker mode is selected 当阀门启动信号呈阳性 开启指示灯亮起 当选择工厂工作模式 阀的工作激励电 信号来源工厂工作电源提供 当打开启动开关 检测模式 激活启用 但是 当 选择 工厂工作模式 或 检测模式 时 这个阀开关可以关掉选择的模式 As well as enabling the valve the enable signal also enables the Valve Checker output signals derived from either the checker itself or the plant electronics 通过阀门的检测员输出的控制信号 来检测阀门 阀门的信号和检测仪本身的工厂 工作电子元件电源 This provides a safety feature that quickly removes all signals in the event of damaging or dangerous process movements Simply selecting master off turns off all signal lines to the valve 这个提供一个安全的检测方法 迅速检测和清除关闭所有相关信号事故 危险的动 作进程 只需简单的关掉控制信号就可以切断所有的信号线 The enable OK LED illuminates when the enable OK signal form the valve is positive 当来自阀的激励正常时 LED照明的启用 亮 1 4 6 Valve Connector 阀的插孔连接阀的插孔连接 All the test points in this section are wired directly to the valve connector This enables the actual voltage on the valve s input pins to be measured regardless of the mode selected A knowledge of the valve input impedance is sometimes necessary to gain benefit from this measurement 在这部分里所有的测试点都与阀门直接连接 这个检测仪输入插脚是来测量阀的实 际电压 不论选择什么控制模式 对于阀输入的阻抗有很好的了解也要来源这种测 量 This section also contains the valve OK LED The valve OK signal is an output from the valve 这部分面板同样包含检测阀正常的信号灯 OK LED 检测仪显示的正常信号也 来源阀的输出 2 SPECIFICATION 规格说明规格说明 Q Command Outputs Q指令输出指令输出 10V 10mA 4 20mA Q Command Test Point Q指令测试点指令测试点 0 to 10V Q Command Q指令指令 Output swing 输出范围输出范围 10V 20mA Spool Inputs 线圈可调范围线圈可调范围 2 5 to 13 5V 10V ferential 10V single ended 10mA 4 20mA Spool Feedback Test Point 管测试点的反馈管测试点的反馈 0 to 10V Test point size 测试点的尺寸测试点的尺寸 2 0mm diameter Supply 电源电源 15V DC 9 to 18V 65 mA at 15V excluding valve 24V DC 18 to 36 V 90mA at 24 V excluding valve Weight 重量重量 1 2kg includes cables Dimensions 尺寸尺寸 205 x 138 x 70 high Cable Length 电线长电线长 3 0M Enable Enable OK within accuracy limits 调整Q指令旋钮 测量控制命令传给阀 使0至 10伏特的灰色测试点量度统一 这些值与阀芯实际位置的绿色测试点产生的值进行对比 为了正常的运行应该在精 度要求范围内 使两者保持相同 6 6 Checker Accuracy Limits 检查精度范围检查精度范围 The accuracy limit of the Valve Checker is 0 2V for all signals This means that if you read a command of 5 6V the feedback signal could be between 5 4 and 5 8V and the valve will be functioning correctly See pg 10 for a table of Q and Q valve pin numbers 检测仪的精度限制为 0 2V测试仪的信号 这句话的意思是 如果你读的反馈信 号为5 6V 这个信号的可能在5 4V和5 8V之间 这个与阀门运行是正常的 参阅第10页Q 和 Q 阀门插脚码的表格 6 7 Valve Connector test points阀门的连接测试点阀门的连接测试点 The valve connector section test points enable a measurement directly on the valve input pins This is useful if a test shows a fault and you want to be sure it is the valve and not the Valve Checker causing it A knowledge of the input impedance of the valve is necessary to calculate the current level when the command is a mA signal 检测仪的连接部分测试点能直接测量阀的输入插孔上 如果测试显示一个故障 你 要确认是阀门的问题而不是检测仪的故障 因为阀门内部电阻是必须要计算选择 等级 所以命令才考虑是毫安信号 6 8 LED Display LED显示屏显示屏 The LED display shows the amplitude of the spool signal This display provides a rudimentary check of the signal The centre blue null LED is illuminated when the spool position is within 10 of null LED显示屏显示的阀芯振幅信号 这显示了一个初步检查的信号 当阀芯位置 是零至 10 不足10 心是蓝色LED亮起 7 EXTERNAL 24V SUPPLY 外部外部24V供应供应 7 1 The Valve Checker can be powered from the plant electronics via the plant connector or from the front panel 24V connector When the external 24V is supplied to this front panel connector three things happen 7 1阀门检测仪的电源可以从工厂电子设备连接或在前面24V面板连接 当用外部 24V电源提供电源提供给当前面板三个去处使用 The Valve Checker internal power is derived from this supply The 24V supply to valves powered by 24V comes from this supply The 15V supply to valves powered by 15V comes from the Valve Checker internal regulators which in turn are powered by the external 24V 检测仪的内部电源功率也来源这个电源供给 这个24V电源提供给被检测阀使用24V电压 阀使用的 15V电源电压来自检测仪内部调节的 使用的电压是依此来源着外部电 压24V提供 7 2 Supply requirements are 2 1mm diameter connector 24V outside contact 0V inside contact 18V to 36V input range 90 mA at 24V to power the Valve Checker with no valve load 7 2供应的要求是 2 1mm直径接头 24V外部接触 0V内部接触 18 至36V输入电压范围 测仪在没有外部阀负载时 电源为24V电压 90 mA电流 7 3 Typical 24V maximum supply requirements for some 24V powered valves are D633 1 2A D634 2 2A D66X 300mA 7 3典型的24V最大供应对应一些24V电动阀 D633 1 2A D634 2 2A D66X 300mA 7 4 Typical 24V maximum supply requirements for some 15V powered valves are D66X 400mA 300mA 15V 7 4 典型24V 最大供应要求一些 15伏特电动阀 D66X 400mA 300mA 15V CAUTION When the external 24V supply is connected the plant supply is always automatically disconnected and the valve is then powered directly or indirectly from the external 24V supply It is therefore essential that the external supply you connect has adequate current capacity to power the valve you are checking 注意 当与外部注意 当与外部24V电源供应连接 工厂提供的电源与阀门自动断开 阀门的动力电源供应连接 工厂提供的电源与阀门自动断开 阀门的动力 直接或间接从外部直接或间接从外部24V电源供应 因此连接的外部电源必须能提供足够的电量 提电源供应 因此连接的外部电源必须能提供足够的电量 提 供检测者来检测 供检测者来检测 8 VALVE PERFORMANCE CHECKS 阀门性能的检测阀门性能的检测 The Checker can be used to test null threshold step response and hysteresis Because threshold and hysteresis on electrical feedback efb valves are very low it can be difficult to get an accurate figure if the valve is operating within specification Testing threshold and hysteresis is only of value if the valve is well out of specification and then only to confirm incorrect operation rather than accurately quantifying it 检测仪可以用来检测零位 阈值阶跃响应和滞后性 因为阈值和滞后性 在滞环电 反馈 ebf 阀门中非常低 即使检测仪说明规定内的操作也很难测得很准确的数 值 检测阈值和滞后仅仅是一个超出规定的范围数值 不过这个规定范围只是来确 定操作的不正确性 这是个精确地量化操作过程 8 1 Null 零位零位 The Spool null position of a flow control Q valve is generally the point at which there is no flow from either port This is the case with axis cut spools However valves can have overlapped under lapped and combinations of the three types that can make checking null a little tricky 通常流量控制阀的阀芯零位这个点上 阀内没有液体通过 阀块阀内情况就是这样 然而阀门有正开口 负开口和零开口三种类型组成 少流量的零位可以检测到零位 An accurate understanding of the specified null characteristic of a valve is essential before any sense can be made of null measurement results 正确把握零位的特点 对于一个阀门至至关重要的意义 可以由可以检测出结果不 确定具体的数量值 8 1 1 To check the null of an axis cut or quasi axis cut spool 3 overlap set the QCommand so the actuator controlled by the valve is stationary Measure the command This measurement is the null offset or null error of the valve It will be difficult to get the actuator to stop for both types of axis cut spool A slight creep one way or another is acceptable 8 1 1 检查阀芯零位位置或者阀口重叠量 3 以内 通过Q命令来控制控制阀的 力矩马达是一定的 测量这个命令 这个测量能抵消阀门零位或零位误差 它很难 把驱动器停下来 停在两种空口类型之一 不过在微量的改变 形成的阀口位置是 可以允许的 8 1 2 Checking the null on an overlapped vale is a little more difficult Find a Q Command that holds the actuator stationary or near stationary A small amount of actuator creep is normal Increase the Q Command until a definite actuator velocity is observed Record this value 8 1 2检测零位时的重叠量是有一点困难 可以提供一个Q命令 使驱动器保持静 止或者动态下静止不动 一个微量的驱动器动是允许的 增加一个明确的Q命令直 到驱动器有运动速度为止 记录下此时的数值 Decrease the Q Command until an equal reverse actuator velocity is observed Record this value The two readings should be equal in magnitude but opposite in sign The difference in the magnitude of the two readings is the null offset 减少Q命令输入直到驱动器有相等的反向速度 并记录下此时的数值 这个两个数 值读数应该大小相等 方向相反 若这两个数值大小不同说明出现零位偏置 8 2 Threshold阈值阈值 8 2 1 Threshold on all types of valves is so low that it is difficult to use the Valve Checker to get an accurate figure However the procedure outlined below will enable you to determine if the valve being checked is faulty assuming the actuator has low threshold 8 2 1在所有类型的阀门的阈值很低 以至于用阀门检测仪也很难得到精确地数值 但是本程序概述下面的方法来确定阀门检测中错误 假设驱动器有很低的阈值 Bring the actuator to a stop with the Q Command Place your finger at the junction of the rod and gland and slowly move the Q Command back and forth around null Limit the valve drive to less than 10 Q命令来控制驱动器使之停止 用手旋转连接的旋钮 慢慢的调节Q命令旋钮反复在零位附近调节 在阀门驱动 值的少于 10 的范围 Using your finger monitor the motion of the rod as its direction reverses The motion should be smooth and free of jerks 用手拨动旋钮 并监视阀芯运动的方向正反 这个动作应该平稳没有猛烈地波动 8 2 2 On efb valves with spool position feedback the same test can be done while monitoring the spool feedback signal with an oscilloscope or chart recorder As the Q Command is smoothly reversed about null the spool signal should show no discontinuity 在带位置反馈的电磁换向阀 在带位置反馈的电磁换向阀 efb 阀芯位置反馈 在同一样的测试中可以用示波 阀芯位置反馈 在同一样的测试中可以用示波 器或图形记录