德国力士乐比例阀R901144795

德国力士乐比例阀R901144795 4WRDE27W500L-53/6L24K9/MR

力士乐REXROTH带集成电子元件 (OBE) 和电气位置反馈的先导式高频响方向阀

4WRDE

规格 10 … 27

组件系列 6X

大工作压力 350 bar

大流量 1000 l/min

额定流量 25 … 500 l/min

-响应灵敏度高，滞后小

高质量-伺服阀性能先导控制阀控制阀芯和套筒

灵活-适用于非常的动态应用中的位置、速率、力量和压力控制

可靠-经过验证且坚固耐用的设计

4WRDE 型阀门是一个带电气位置反馈和集成电子元件 (OBE) 的三级先导式方向控制阀。

设置

阀的基本构成是：

4WS2EM6-2X 型号二级助力模式先导控制阀

包括壳体和主级控制阀芯的主级

带主级感应式位置传感器的集成电子元件

功能

在集成电子元件 (OBE) 中，主级控制阀芯的控制值将与位置理论值进行比较。在存在差值（控制偏差）的情况下，先导控制阀的一级将被控制（干力矩马达和喷嘴挡板系统）。这样，可以实现喷嘴挡板系统的挡板的偏斜。挡板距离先导油流经的两个控制喷嘴其中一个的距离将减少，而距离另一个喷嘴的距离将增加。通过连接孔，与控制信号类似，产生的流量差导致控制阀芯在先导控制阀（第二级）中偏斜。先导控制阀释放的流量使主级（第三级）控制阀芯偏斜，直至其实际位置值与控制值相符。控制阀芯的行程通过控制值的比例进行控制。

阀门特点

阀门的出厂设置为震荡默认设置，恒定频率为 400 Hz。

电源电压故障

应用先导油压后，主级控制阀芯将移动至未定义的终端位置。这一连接中产生的加速力可能导致机械损坏。

如果使用方向叠加阀（请参阅订货代码），则在断电情况下主级的两个先导油腔将短路。

对于符号 E、E1-、W6 和 W8，主级阀芯将使用弹簧对中中心位置。

对于符号 V 和 V1，主级阀芯将使用弹簧操作的偏移位置（P-B 和 A-T）（公差范围为控制阀芯行程的 1% ... 11%）

注意：

零电位更改和/或颤振电流振幅可能导致系统损坏，故只能由的专业人员执行。

先导控制阀只能由力士乐员工进行维护。有一种例外情况，即根据附件列表更换过滤器和密封件。在装配过程中，必须确保密封件已正确固定且保护塞已拧紧。保护塞的紧固扭矩为 30 Nm。

型号“Y”

外部先导油供油，外部先导油回油

在本型号中，先导油由单独的先导油路供给（外部）。先导油回油不流入主阀的 T 通道，而是单独通过油口 Y 流入油箱（外部）。

型号“PY”

内部先导油供油，外部先导油回油

使用本型号时，先导油由主阀的 P 通道供给（内部）。先导油回油不流入主阀的 T 通道，而是单独通过油口 Y 流入油箱（外部）。在底板中，必须关闭油口 X。

型号“PT”

内部先导油供油，内部先导油回油

使用本型号时，先导油由主阀的 P 通道供给（内部）。先导油直接流回主阀的 T 通道（内部）。在底板中，必须关闭油口 X 和 Y。

型号“XT”

外部先导油供油，内部先导油回油

在本型号中，先导油由单独的先导油路供给（外部）。先导油直接流回主阀的 T 通道（内部）。在进油联中，必须关闭油口 Y。

力士乐REXROTH高响应方向阀，先导，带集成电控装置（OBE）和电气位置反馈4WRDE -5X

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