4WRLE25V370M-4X/MXY/24A1比例方向阀

4WRLE25V370M-4X/MXY/24A1比例方向阀由上海韦米机电设备有限公司专业提供

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4WRLE25V370M-4X/MXY/24A1比例方向阀

比例阀对流量的控制可以分为两种：

一种是开关控制：要么全开、要么全关，流量要么大、要么小，没有中间状态，如普通的电磁直通阀、电磁换向阀、电液换向阀。

另一种是连续控制：阀口可以根据需要打开任意一个开度，由此控制通过流量的大小，这类阀有手动控制的，如节流阀，也有电控的，如比例阀、伺服阀。

所以使用比例阀或伺服阀的目的就是：以电控方式实现对流量的节流控制（当然经过结构上的改动也可实现压力控制等），既然是节流控制，就必然有能量损失，伺服阀和其它阀不同的是，它的能量损失更大一些，因为它需要一定的流量来维持前置级控制油路的工作。

比例控制阀可分为压力控制阀，流量控制及方向控制阀三类。

压力控制阀:用比例电磁阀取代引导式溢流阀的手调装置便成为引导式比例溢流阀，其输出的液压压力由输入信号连续或按比例控制。

流量控制阀:用比例电磁阀取代节流阀或调速阀的手调装置而以输入信号控制节流阀或调速阀之节流口开度，可连续或按比例地控制其输出流量。故节流口的开度便可由输入信号的电压大小决定。

方向控制阀:比例电磁阀取代方向阀的一般电磁阀构成直动式比例方向阀，其滑轴不但可以换位，而且换位的行程可以连续或按比例地变化，因而连通油口间的通油面积也可以连续或按比例地变化，所以比例方向控制阀不但能控制执行元件的运动方向外，还能控制其速度。

4WRLE25V370M-4X/MXY/24A1比例方向阀

4WRLE 型阀是一种先导式方向控制阀，带有电气位置反馈和车载电子装置 (OBE)。

布局

阀门基本上由 3 个主要组件组成：

先导控制阀 (1) 带控制阀芯和套筒、复位弹簧、控制电磁阀和感应位置传感器（可选配电子保护膜 (5) 和阻尼板 (4)）

带定心弹簧和位置反馈的主阀 (2)

带模拟量 (6) 或 IO-Link 接口的车载电子设备 (OBE) (3)

功能

当车载电子设备 (OBE) 关闭或未激活时，先导控制阀的控制阀芯在“故障安全”位置弹簧操作。主阀的控制阀芯处于弹簧居中的中心位置。

车载电子装置 (OBE) 将****的控制值与主阀控制阀芯的位置实际值进行比较。如果出现控制偏差，将激活控制电磁阀。由于磁力的变化，先导控制阀芯逆着弹簧进行调节。

通过控制横截面激活的流量导致主控制阀芯的调整。主控制阀芯的行程/控制横截面与控制值成比例地调节。

先导控制阀中的先导油供应可以通过油口 P 内部或通过油口 X 外部。反馈可以通过油口 T 内部或外部通过油口 Y 到油箱。

控制电磁阀关闭

如果出现以下错误，控制电磁阀会被车载电子设备 (OBE) 断电，先导控制阀芯设置在“故障安全”位置并卸载主阀的先导油腔。在弹簧的作用下，主阀控制阀芯将移动到中间位置。

低于较低电源电压

仅用于接口“F1”：

低于 2 mA 的较小电流控制值（包括控制值线（电流回路）的电缆断线）。

仅适用于接口“L1”：

启用非活动、通信中断（看门狗）

在内部 IO-Link 错误的情况下

仅用于接口“C6”：

另外启用非活动

阻尼板“D”

阻尼板 (4) 降低了车载电子设备上的加速度幅度（频率 >300 Hz）。

注意：

不建议在主要低频激励 <300 Hz 的应用中使用阻尼板。

电子保护膜“-967”

为了防止在车载电子设备 (OBE) 的外壳中形成冷凝水，可以使用电子设备保护膜 (5)。

建议在高环境空气湿度和显着循环温度变化（例如室外）的行业标准条件之外使用。

注意：

带正重叠的先导式 4/3 方向控制阀可在受控或调节轴上运行。断电状态下的重叠约为。控制阀芯行程的 20%。当电源电压关闭时，驱动器可能会在功能方向 P 到 B 上短时间加速。

 4WRLE25V370M-4X/MXY/24A1比例方向阀型号

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力士乐REXROTH三位四通高响应换向阀、先导式、电气位置反馈和集成电子放大版（OBE）4WRVE

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0811404446 4WRVE27V430M-2X/G24K0/B5M

R901PT0046 4WRVE35V1000M-2X/G24K0/B5M-891

力士乐REXROTH三位四通高响应换向阀、先导式、电气位置反馈和集成电子放大版（OBE）4WRGE

R900547726 4WRGE10E1-50L-1X/210G15ETZ31/MR

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力士乐REXROTH三位四通高响应换向阀、先导式、电气位置反馈和集成电子放大版（OBE）4WRTE

阀门是管路流体输送系统中控制部件，用来改变通路断面和介质流动方向，具有导流、截止、节流、止回、分流或溢流卸压等功能。用于流体控制的阀门，从简单的截止阀到极为复杂的自控系统中所用的各种阀门，其品种和规格繁多， 阀门的公称通径从极微小的仪表阀大至通径达10m的工业管路用阀。可用于控制水、蒸汽、油品、气体、泥浆、各种腐蚀性介质、 液态金属和放射性流体等各种类型流体地流动 ，阀门的工作压力可以从0.0013MPa到1000MPa 的非常高压，工作温度可以c-270℃的超低温到1430℃的高温。