德国原装力士乐先导式比例方向插装阀:R901436328 2WFCE 50 S1500L-1X/M/24G1现货供应
设置
2WFCE 型先导式比例方向阀基本构成包括:
- 盖 (1)
- 主级 (2)
- 带比例电磁铁 (3) 的先导控制阀
- 带位置传感器和模拟接口的集成电子元件 (4)
集成电子元件 (OBE) 将控制值与主级 (2) 控制阀芯的位置理论值进行比较。在存在控制偏差的情况下,先导控制阀 (3) 将激活控制线圈。以此调节控制阀芯。根据控制偏差的不同,主级 (2) 控制腔或者以先导油(主级已关闭)加压,或者已卸载(主级已打开)。控制偏差修正前,将通过控制值成比例地控制行程及节流孔横截面。
为保证正常运行,必须遵守以下条件:
- 流向 A → B(X 连接到 A)
- 流向 B → A(X 连接到 B)
电源电压故障
如果最小电源电压发生故障或低于最小电源电压,则启用将断开(接口 B1 和 G1)且在线圈导线电缆中断情况下,集成电子元件 (OBE) 将断开先导控制阀 (3) 线圈的电源。主级控制阀芯 (2) 通过油口 X 处可用压力和主级弹簧力安全移动至其阀座位置并阻塞 A 和 B 之间的油液流动。
流量控制功能
先导式比例方向阀可与压力补偿器配合使用以提供压力补偿流量控制。
R900020153 VT3002-1-2X/32D
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