力士樂伺服換向閥4WRLE型的功能說明：當沒有操動控制電磁鐵時，先導閥的控制滑閥在彈簧力作用 下處在“Fail-Safe”功能位置中，主級滑閥處在其彈簧對中的中 間位置。 在集成電子控制器中將設定值與主級控制滑閥的位置實際值 進行比較。 如果存在控制偏差，就會驅動控制電磁鐵， 以改變磁力的方式對先導滑閥進行調整。 經過控制截面的體 積流量使得主控制滑閥移動，相對于設定值 0.5...10 V 以 20...100％ 比例調節其行程。 如果設定值 ＜±0.5 V， 則主級的控制滑閥就會在對中彈簧作用下保持在被遮蓋的中 間位置。 要么在內部通過接口 P，或者在外部通過接口 X 將控制油供 應給先導閥。 可以在內部通過接口 T 或者在外部通過接口 Y 回流到油箱。

電源故障 如果發生故障，或者當電纜斷線時，集成式電子控制器就會 將控制電磁鐵斷電，先導滑閥進入“Fail-Safe”功能位置， 并且將主級的控制油腔卸空。 主級控制滑閥在彈簧作用下進 入中間位置。

德國Rexroth伺服電磁閥（帶電氣位置反饋（LvdtDC/DC±10V），4WRL1032）：

4WRL10V–55M3X/G24Z4/M、4WRL10V–55M3X/G24TZ4/M、4WRL10V–55M3X/G24ETZ4/M、4WRL10V–85M3X/G24Z4/M、4WRL10V–85M3X/G24TZ4/M、4WRL10V–85M3X/G24ETZ4/M
0811J04309 4WRLE16XZ110SJ-3X/G24K0/A1M-768、0811J04277 4WRLE16X200L-3X/G24TK0/B5M-780、0811J04253 4WRLE16X200M-3X/G24K0/A1WG02M-776、0811A04658 4WRLE10X85M-3X/G24K0/A1WG02M-813、0811404717 4WRLE10W4-80SJ-3X/G24K0/A102M-864、0811404716 4WRLE10X50SJ-3X/G24K0/A1M-800、0811404715 4WRLE10E1-80SJ-3X/G24ETK0/A1M、0811404713 4WRLE10E80SJ-3X/G24ETK0/A1M、0811404712 4WRLE10W1-80SJ-3X/G24EK0/A102M-756、0811404711 4WRLE10W4-80SJ-3X/G24K0/A1M、0811404708 4WRLE10W1-80SJ-3X/G24EK0/A102M-744、0811404707 4WRLE10W80SJ-3X/G24ETK0/A1M、0811404706 4WRLE10E1-80SJ-3X/G24K0/A1M-755、0811404704 4WRLE10W50SJ-3X/G24ETK0/A1M、0811404703 4WRLE10W1-80SJ-3X/G24K0/A1M、0811404702 4WRLE10W80SJ-3X/G24K0/A1M、0811404701 4WRLE10E1-80SJ-3X/G24K0/A1M、0811404700 4WRLE10E80SJ-3X/G24K0/A1M、0811404687 4WRLE10V70P-3X/G24K0/A1M、0811404683 4WRLE10V85M-3X/G24ETK0/A1M-810、0811404681 4WRLE10V85M-3X/G24ETK0/F1M、0811404680 4WRLE10Q3-85M-3X/G24ETK0/A1M、0811404678 4WRLE10V55M-3X/G24ETK0/A1M-810、0811404677 4WRLE10X85M-3X/G24K0/A1M-0811、0811404673 4WRLE10V1-85M-3X/G24ETK0/A1M、0811404672 4WRLE10V1-85M-3X/G24K0/A1M、0811404670 4WRLE10Q4-85M-3X/G24ETK0/A1M、0811404668 4WRLE10Q4-85M-3X/G24TK0/A1M、0811404665 4WRLE10Q5-85M-3X/G24ETK0/A1M、0811404664 4WRLE10V85M-3X/G24K0/B5M、0811404663 4WRLE10V55M-3X/G24K0/B5M、0811404662 4WRLE10V85M-3X/G24ETK0/A1M、0811404661 4WRLE10V55M-3X/G24ETK0/A1M、0811404660 4WRLE10V85M-3X/G24TK0/A1M、0811404659 4WRLE10V55M-3X/G24TK0/A1M、0811404657 4WRLE10V55M-3X/G24ETK0/A1V、0811404656 4WRLE10X85M-3X/G24ETK0/A1M-812、0811404653 4WRLE10V85M-3X/G24K0/A1M、0811404652 4WRLE10V55M-3X/G24K0/A1M、0811404588 4WRLE35R5-1100SJ-3X/G24EK0/A1M-868、0811404587 4WRLE35Q5-1000M-3X/G24EK0/A1WG02M、0811404585 4WRLE35X1000M-3X/G24K0/A1M-848、0811404583 4WRLE35V1000M-3X/G24K0/A1M-834、0811404580 4WRLE35Q3-1000M-3X/G24TK0/A1M、0811404579 4WRLE35V1000M-3X/G24K0/A1M、0811404578 4WRLE35X500M-3X/G24EK0/A1M-812、0811404577 4WRLE35X1000M-3X/G24K0/A1M-812、0811404576 4WRLE35X1000M-3X/G24EK0/A1M-812、0811404575 4WRLE35X500M-3X/G24K0/A1M-812、0811404574 4WRLE27V1-430M-3X/G24K0/F1M
0811404573 4WRLE25V370M-3X/G24K0/F1M、0811404572 4WRLE27Q3-550P-3X/G24K0/A1M
0811404571 4WRLE27Q5-430M-3X/G24EK0/A1WG02M、0811404570 4WRLE25V370M-3X/G24EK0/F1M、0811404568 4WRLE25X370M-3X/G24TK0/A1M-0811、0811404567 4WRLE27Q3-430M-3X/G24K0/A1WG02M、0811404566 4WRLE25Q3-370M-3X/G24K0/A1WG02M
0811404560 4WRL35V1000M-3X/G24Z4/M-923、0811404508 4WRLE35R5-1100SJ-3X/G24EK0/A102M-745、0811404506 4WRL35W2-1100S-3X/G24Z4/M、0811404505 4WRLE35W3-1100SJ-3X/G24EK0/A102M-745、0811404504 4WRLE35W1100SJ-3X/G24K0/A1M、0811404503 4WRLE35W5-600SJ-3X/G24EK0/A102M-745、0811404502 4WRLE35W1100SJ-3X/G24EK0/A102M-744、0811404501 4WRL35W1100S-3X/G24Z4/02M-767、0811404500 4WRL35E1100S-3X/G24Z4/M、0811404498 4WRLE25V370M-3X/G24ETK0/A1M、0811404496 4WRL25V300P-3X/G24Z4/M、0811404494 4WRLE35W1100SJ-3X/G24K0/A1M-732、0811404493 4WRLE27W430SJ-3X/G24K0/A1M-732
0811404492 4WRLE25W4Z350SJ-3X/G24K0/A1M-732、0811404489 4WRL25EZ000S-3X/G24Z4/M-867、0811404488 4WRLE25WZ350SJ-3X/G24K0/A1V、0811404485 4WRLE27E4-430SJ-3X/G24K0/A1M、0811404481 4WRLE25EZ350SJ-3X/G24ETK0/A1M、0811404480 4WRLE25WZ350SJ-3X/G24K0/A1M-759、0811404479 4WRLE27W3-430SJ-3X/G24EK0/A102M-745、0811404478 4WRLE27E430SJ-3X/G24K0/A1M、0811404477 4WRLE27X430SJ-3X/G24EK0/A102M-782、0811404474 4WRLE25W350SJ-3X/G24EK0/A102M-745、0811404473 4WRLE25W350SJ-3X/G24EK0/A102M-756
0811404472 4WRLE25W4Z350SJ-3X/G24K0/A1M、0811404471 4WRLE25W4Z350SJ-3X/G24ETK0/A1M、0811404470 4WRLE25W3-350SJ-3X/G24EK0/A102M-756
0811404467 4WRLE25W3-350SJ-3X/G24EK0/A102M-745、0811404466 4WRLE25EZ350SJ-3X/G24TK0/A1M、0811404462 4WRLE27W430SJ-3X/G24K0/A1M-758、0811404461 4WRLE25WZ350SJ-3X/G24K0/A1M-758、0811404459 4WRLE25E4-350SJ-3X/G24K0/A1M
0811404458 4WRLE27W430SJ-3X/G24K0/A1M、0811404457 4WRLE25W1Z350SJ-3X/G24K0/A1M、0811404456 4WRLE25WZ350SJ-3X/G24K0/A1M、0811404455 4WRLE25E1Z350SJ-3X/G24K0/A1M、0811404454 4WRLE25EZ350SJ-3X/G24K0/A1M
0811404453 4WRLE25WZ350SJ-3X/G24ETK0/A102M-749、0811404452 4WRLE25WZ350SJ-3X/G24EK0/A1M-561、0811404444 4WRLE25V1-370M-3X/G24K0/A1M、0811404443 4WRLE27W4-430SJ-3X/G24ETK0/A102M-745、0811404442 4WRLE27Q4-430M-3X/G24TK0/A1M、0811404441 4WRLE27Q4-430M-3X/G24K0/A1M、0811404440 4WRLE27W1-430M-3X/G24EK0/A1M-769、0811404439 4WRLE25W1-370M-3X/G24EK0/A1M-769
R901131953 4WRLE25Q3-370M-3X/G24K0/A1M、R901102544 4WRLE16W1-180SJ-3X/G24K0/A1M、R901089293 4WRLE16V200M-3X/G24ETK0/A1M、R901132613 4WRLE16V1-200M-3X/G24TK0/A1V、R901132535 4WRLE16V120M-3X/G24TK0/A1V、R901131728 4WRLE25V370M-3X/G24K0/B5M、R901131008 4WRLN27Q4-430M-3X/MXY/24CA6A、R9011208117 4WRLE16V200L-3X/G24ETK0/A1M、R9011208116 4WRLE16V120L-3X/G24ETK0/A1M、R901126915 4WRLE35E1-1100SJ-3X/G24K0/A1M、R901125761 4WRL27E430S-3X/G24EZ4/M、R901124948 4WRLE25EZ350SJ-3X/G24K0/A1WG082M、R901124887 4WRLE25E4-350SJ-3X/G24EK0/A1M、R901118992 4WRLE25V370M-3X/G24ETK0/F1M、R901118991 4WRLE16V1-120M-3X/G24K0/F1M、R901111711 4WRLE35V1000M-3X/G24EK0/F1M、R901106966 4WRLE10Q4-85M-3X/G24K0/A1M
R901102544 4WRLE16W1-180SJ-3X/G24K0/A1M、R901097659 4WRLE10E80SJ-3X/G24TK0/A1M、R901095626 4WRL16E1Z180S-3X/G24ETZ4/M、R901094014 4WRLE16V1-120M-3X/G24TK0/A1M、R901091344 4WRLE10V55M-3X/G24K0/F1M、R901089293 4WRLE16V200M-3X/G24ETK0/A1M、R901088123 4WRLE16Q5-200M-3X/G24ETK0/A1M
R901087984 4WRLE16V200M-3X/G24EK0/A1M、R901086253 4WRL16EZ180S-3X/G24ETZ4/M

Rexroth三位四通伺服換向閥4WRLE的特征：先導式 4/3-伺服換向閥 NG10 ～ NG35，遮蓋度約為 20 ％； 先導閥 NG6，配有控制活塞和鋼套，伺服性能可靠，單側操作，4/4 斷電時處于 Fail-safe 功能位置；控制電磁鐵，配有電子位置反饋器和集成式電子控制器 (OBE)，出廠時已校準 ； 主級配有位置反饋器；電子補償、校準遮蓋度；線性滑閥，配有防扭轉裝置； 流量特性： S = 漸增式、NG16, 25, 27，帶有負載平衡口 C1/C2；用于閥板安裝，NG10 接口的位置符合 ISO 4401-05-05-0-05, NG16 接口的位置符合 ISO 4401-07-07-0-05，NG25/27 接口的位置符合 ISO 4401-08-08-0-05，NG35 接口的位置符合 ISO 4401-10-09-0-05；安裝板根據規格參數表，NG10 RC 45055, NG16 RC 45057, NG25/27 RC 45059 和 NG35 RD 45060（單獨訂購）；符合 DIN 43563-AM6 標準的線纜插座， 參見規格參數表 RD 08008。