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力士樂比例閥R900954281 4WRTE25E220L-46/6EG24K31/A1M
產(chǎn)品型號: 4WRTE25E220L-46/6EG24K31/A1M 品 牌: 力士樂 -
1-4 臺
¥27500.00 -
5-9 臺
¥27000.00 -
≧10 臺
¥26500.00
所 在 地: 上海浦東新區(qū) 更新日期: 2025-08-25 詳細(xì)信息| 詢價留言品牌:力士樂 型號:4WRTE25E220L-46/6EG24K31/A1M 連接形式:螺紋 流動方向:換向 驅(qū)動方式:電磁 材質(zhì):鑄鋼 公稱通徑:6 mm 壓力環(huán)境:常壓 工作溫度:常溫 標(biāo)準(zhǔn):德標(biāo) 外形:大型 適用介質(zhì):油品 類型:比例控制閥 形態(tài):柱塞式 適用介質(zhì):油品 力士樂比例閥R900954281 4WRTE25E220L-46/6EG24K31/A1M是上海韋米機(jī)電設(shè)備有限公司主營產(chǎn)品之一,聯(lián)系人:雷青;力士樂REXROTH品牌備件上海優(yōu)質(zhì)供應(yīng)商,常規(guī)產(chǎn)品現(xiàn)貨供應(yīng)。歡迎新老客戶來電咨詢采購!
力士樂REXROTH比例閥4WRTE25E220L-4X/6EG24K31/A1M
R900954281 4WRTE25E220L-46/6EG24K31/A1M
標(biāo)稱尺寸25,符號E,帶集成電子器件的電氣,24 V DC
大功率工業(yè)液壓閥,根據(jù)液壓符號可靠的油流向調(diào)節(jié),內(nèi)部活塞位置反饋,精度高
線性特性
滑閥
預(yù)轉(zhuǎn)向
外部控制供油,外部控制回油
產(chǎn)品特性
連接類型 ISO 4401-08-08-05
壓力[bar] 350
體積流量[l/min] 870
活塞符號 符號E
控件 集成電子
連接類型 板式結(jié)構(gòu)
額定流量【l/min】 220
標(biāo)稱尺寸 25
操作類型 帶有集成電子設(shè)備的電氣
連接數(shù) 4
開關(guān)位置數(shù)量 3
電源電壓 24伏直流電
電氣插頭 設(shè)備插頭7針(6+PE)
電氣連接說明 符合EN 175201-804的裝置插頭7針(6+PE)
連通性 模擬,設(shè)定值±10 V
壓力流體 HLP、HLP、hdpd、HVLP、HVLPD、HFC
密封件 NBR
重量[kg] 18.06
力士樂REXROTH用于 A10VSO 軸向柱塞變量泵 SYDFE1 控制的外部控制電子元件
VT 5041
R901263598 VT5041-31/2-0
組件系列 3X
模擬,歐洲板卡格式
壓力和流量控制系統(tǒng) SYDFE1(元件系列 1X、2X 和 3X)的內(nèi)裝部分用于通過 VT-DFP…2X 型閥門控制帶 SYDFE1 控制的軸向柱塞變量泵 A10VSO...
實現(xiàn) SYDFE1 控制、壓力和擺動角控制、可選功率限制的電子功能
壓力控制器油路可以調(diào)節(jié)并切換為兩個現(xiàn)有液壓油體積(執(zhí)行機(jī)構(gòu)和管路)
用于壓力和轉(zhuǎn)角控制器的小值發(fā)生器
取決于壓力的泄漏補(bǔ)償(可以關(guān)閉)
可轉(zhuǎn)換的壓力反饋輸入(電流、電壓、范圍)
面板上工作狀態(tài)的 6 個 LED 顯示
面板上實際轉(zhuǎn)角值的顯示儀器(可選)
帶內(nèi)部或外部控制值預(yù)設(shè)的功率限制(可選)
模擬控制電子元件 VT5041-3X... 設(shè)計為歐洲格式的的插入卡。每個都標(biāo)配一個壓力和轉(zhuǎn)角的控制值輸入端(功率限制,可選)。實際壓力值由一個壓力傳感器記錄。泵上的位置傳感器記錄實際轉(zhuǎn)角值。記錄的實際值在放大器和中進(jìn)行處理,并與的控制值進(jìn)行比較。小值發(fā)生器確保只有分配給所需工作點的控制器或自動激活。小值發(fā)生器的輸出信號成為閥控制環(huán)的控制值。
通過合適的控制值,可以自動激活可選的功率限制。可以在內(nèi)部或外部功率控制值。必要時通過小值發(fā)生器限制轉(zhuǎn)角控制值。可以在插口 7 上測量得到的轉(zhuǎn)角控制值。
實際閥值(閥芯位置)由一個感應(yīng)式位置傳感器記錄。振蕩器/解調(diào)器電路負(fù)責(zé)信號的處理。在閥芯位置控制器中生成并進(jìn)一步處理控制偏差。閥門控制器的輸出信號形成自計時電流輸出級的控制值,該值控制閥門的比例線圈。
控制電子元件具有故障消息輸出端,出現(xiàn)錯誤時,其電壓為 0 V(= 低活性)。同時“Err.”LED 亮起。根據(jù)跳線 J1 的配置,可以利用錯誤消息使閥輸出級斷電。
導(dǎo)致故障消息:
內(nèi)部電源錯誤
壓力實際值大于允許的系統(tǒng)壓力
(插口 2: p實際 > 11.5 V)
接口 26c 上缺少啟用信號
電纜斷裂或超出轉(zhuǎn)角反饋范圍
電纜斷裂或超出閥芯反饋范圍
“壓力傳感器”電纜斷裂(設(shè)置為 4 - 20 mA,0.5 - 5 V 和 1 - 10 V 時)
控制錯誤(控制偏差 x 控制器增益)大于 4 V 的時間超過 1 秒 (40 %)
出現(xiàn)錯誤時,可以對電子元件進(jìn)行配置,以使輸出級斷電,并將閥芯推入其機(jī)械終端位置。這樣,泵將向回擺動。只能通過復(fù)位啟用信號進(jìn)行錯誤確認(rèn)。
德國力士樂REXROTH柱塞泵放大板訂貨號和型號:
R901236404 VT5041-31/1-0
力士樂REXROTH柱塞泵放大板VT 5041-3X/1-0
R901236404 VT5041-31/1-0
用于控制 SYDFE1 類型的系統(tǒng)。
沒有功率限制不帶擺動角顯示的標(biāo)準(zhǔn)型號
通訊方式:模擬
SYDFE1 的外部控制電子元件 - 系統(tǒng)
設(shè)備系列 3X
電源電壓 24 VDC
電氣連接說明 32 針連接器,D 型
Design 電路板
重量 [kg] 0.2509
力士樂REXROTH集成式供電模塊
VT-NE30,部件系列2X
VT-NE31,部件系列1X
–電源單元VT-NE30(單極輸出電壓):
用于比例閥放大器的電壓供應(yīng)
用于比例閥的電壓供應(yīng)
集成電子單元
電源單元VT-NE31(雙極輸出電壓):
用于伺服閥放大器的電壓供應(yīng)
設(shè)計緊湊,通過接線板連接
未調(diào)節(jié)的輸出電壓(濾波)
通過輸出電路中的微型保險絲進(jìn)行短路保護(hù);
按“重置”鍵重新啟動
可擰在頂帽導(dǎo)軌EN 60715上或卡入頂帽導(dǎo)軌
LED指示燈
符合EC指令(CE標(biāo)志)
頻率 50/60 Hz
允許的環(huán)境溫度范圍 –20至+50°C
儲存溫度范圍 –20至+70°C
德國力士樂REXROTH集成式供電模塊訂貨號和型號:
R901082348 VT-NE30-20
力士樂REXROTH供電模塊
類型 VT 11006,VT 11116
供電模塊提供兩種穩(wěn)定電壓。用于為外部電氣執(zhí)行機(jī)構(gòu)供電。
VT 11006-1X:24 V / ±15 V
VT 11116-1X:24 V / ±10 V
開關(guān)模式的電源設(shè)備
電壓反極性保護(hù)
通過 LED 顯示的功能控制
輸出電壓在電氣上與工作電壓隔離
注意事項
供電模塊不能抵抗持續(xù)的短路!
一路輸出電壓發(fā)生過載時,第二路輸出電壓也會降低!
連續(xù)運行多個相鄰模塊且溫度高于 40 °C 時,模塊之間的空間必須保持為 ≥ 20 mm!
德國力士樂REXROTH放大器供電模塊訂貨號和型號:
R900010937 VT11006-12
R900010938 VT11015-11
R900019681 VT11017-11
力士樂REXROTH用于不帶電氣位置反饋的比例閥的閥放大器
VT-MSPA
R901439034 VT-MSPA1-20/A5/000/000
R901439037 VT-MSPA2-20/A5/000/000
R901439037 VT-MSPA2-21/A5/000/000
R901439038 VT-MSPA2-21/F5/000/000
R901439036 VT-MSPA1-2X/F5/000/000
R901061664 VT-MSPA2-200-1X/V0/0
R901142366 VT-MSPA1-200-1X/V0/0
R901010980 VT-MSPA2-1-1X/V0/0
R901197784 VT-MSRA1-1-1X/V0/0
0811405106 VT-MSPA2-525-10/V0
R900249810 VT-MSPA1-50-1X/V0
0811405140 VT-MACAS-500-10/V0/I
組件系列 2X
適用于控制不帶電氣位置反饋的比例閥和泵控制件
多種力士樂工業(yè)液壓閥門可供選擇
設(shè)備中所存儲閥門的特性曲線
通過按鈕優(yōu)化閥門
控制值輸入 0 ... ±10 V 或 4 ... 20 mA
工作電壓的反向極性保護(hù)
斜坡發(fā)生器上斜坡和下斜坡可以單獨調(diào)節(jié)
零電位設(shè)置
控制值調(diào)節(jié)
特性曲線發(fā)生器
定時功率輸出級
防短路輸出
LED 狀態(tài)顯示
測量插口適用于:實際電流值、內(nèi)部電流控制/設(shè)置
所有閥門參數(shù)可調(diào)節(jié)
一般信息
這些放大器模塊適于裝配在禮帽式導(dǎo)軌上。通過 3 個張力彈簧插頭建立電氣連接。電源電壓為 24 VDC。
供電設(shè)備
內(nèi)部供電設(shè)備隨附了接通電流限制器以防止出現(xiàn)電流峰值。此外,還集成了反向極性保護(hù)功能。
控制值,控制值加法器
"內(nèi)部控制值" 包括:
"外部控制值",連接在差分放大器 (2) 的輸入處
零位偏移,標(biāo)準(zhǔn)設(shè)置中的 "Z/B" 可調(diào)節(jié)
在壓力閥中,正控制值會使閥門處的壓力增加。
對于 4W...1) 型號閥門,下列內(nèi)容適用:
通過線圈 B,0 - +10 V 或 12 - 20 mA 的控制值使閥中流體從 P 流向 A,從 B 流向 T。
通過線圈 A,0 - -10 V 或 12 - 4 mA 的控制值使閥中流體從 P 流向 B,從 A 流向 T。在專家設(shè)置中,控制值極性變化是可能的 [5](請參閱操作說明 30232-B)。
在正常運行時,可以在 "V" 測量插口處測量 "內(nèi)部控制值"。
斜坡
斜坡限制控制值的傾斜。
您可以在一個斜坡所有斜坡均為一個時間,默認(rèn)值)和 4Q/2Q 斜坡(斜坡的時間不同)之間選擇。4Q/2Q 斜坡時間在專家設(shè)置中設(shè)置。特性曲線發(fā)生器不影響斜坡時間。
控制值衰減器 "G"
利用控制值衰減器可以降低控制值。
特性曲線發(fā)生器
在特性曲線發(fā)生器中,預(yù)設(shè)閥門特性曲線可以調(diào)整到實際液壓和控制技術(shù)條件。
可以在專家設(shè)置中調(diào)節(jié)以下內(nèi)容:
先導(dǎo)電流 "B"
階躍 "S"
大電流 "G"(VT-MSPA2 可分別用于 A 和 B)
電流控制器
將對線圈電流進(jìn)行記錄,并在電流控制器中將其與控制值進(jìn)行比較,然后補(bǔ)償差異。
時鐘發(fā)生器
時鐘發(fā)生器會產(chǎn)生輸出級的時鐘頻率 "f"。使用力士樂閥門,時鐘頻率有時隨控制值和/或工作電壓而變化。
功率輸出級
電流輸出級產(chǎn)生比例閥的定時線圈電流。線圈電流被限制為
每次輸出的大允許電流,具體取決于設(shè)定閥門。輸出級為防短路設(shè)計。如出現(xiàn)內(nèi)部干擾信號或啟用缺失時,輸出級將關(guān)閉。
數(shù)字輸入
輸入 DI 可設(shè)置到四個不同的功能:
1. 啟用(出廠設(shè)置)
2.VT-MSPA1 1) 不帶功能
2.VT-MSPA2 控制值極性變化
3.斜坡開/關(guān)
4.單個或相位斜坡
數(shù)字輸出
若無電纜中斷、內(nèi)部錯誤,且 UB ≥ UB 小,則設(shè)備會通知準(zhǔn)備就緒。
閥門類型 4WRPH6…SO855,開關(guān)位置 0-5:
控制值 ±10 V
數(shù)字輸入端 2,控制值極性變化
力士樂REXROTH斜盤傾角傳感器
裝配件組件 VT-SWA-1
R900913641 VT-SWA-1-13/DFEE
R900868651 VT-SWA-1-13/SYDFEE
組件系列 1X
在 SYDFEE、SYDFEC、SYDFED、SYDFEn 和 SYDFEF系統(tǒng)(帶集成電子元件的系統(tǒng))中使用,用于測量 A10V(S)O…DFE… 型泵的轉(zhuǎn)角并將測量值轉(zhuǎn)換為電信號
使用霍爾效應(yīng)傳感器無觸點測量轉(zhuǎn)角
包括磁座和殼體中帶有集成電子元件的傳感器
R900868651 VT-SWA-1-1X/SYDFEE
用于帶集成電子元件的 SYDFEE、SYDFEC 和 SYDFEn 系統(tǒng)的斜盤傾角傳感器
(包含傳感器和評估電子元件、磁座和內(nèi)置部件的完整裝配件組件)
適用于 18 - 180 所有規(guī)格的泵 A10V(S)O..DFE。
力士樂REXROTH用于 A4VS... 軸向柱塞泵(帶有 HS4 可變排量)和 A2V... 軸向柱塞泵(帶有 EO4 可變排量)的數(shù)字閉環(huán)控制電子元件
VT-VPCD
組件系列 1X
數(shù)字,歐洲板卡格式
用于擺動角和壓力控制,以及軸向柱塞變量泵的功率限制
可能的產(chǎn)品替代 VT-HPC。
特點
帶 HS4 控制的控制系統(tǒng)由以下裝配件組成:
具有 4WRE6-2X/822 附帶比例閥的 A4VS…HS4 軸向柱塞泵,包括用于轉(zhuǎn)角和閥位置檢測的位置傳感器
在記錄系統(tǒng)壓力時推薦使用的壓力傳感器 HM20-2X
VT-VPCD 控制電子元件可實現(xiàn) HS4 控制所需的全部電氣功能帶 EO4 控制的控制系統(tǒng)由以下裝配件組成:
具有附帶比例閥的 A2V...EO4 軸向柱塞泵(殼體和/或安裝泵),包括用于轉(zhuǎn)角和閥位置檢測的位置傳感器
在記錄系統(tǒng)壓力時推薦使用的壓力傳感器 HM20-2X
VT-VPCD 控制電子元件可實現(xiàn) EO4 控制所需的全部電氣功能參數(shù)通過串行接口進(jìn)行設(shè)置。用戶特定的數(shù)據(jù)可被完全復(fù)現(xiàn),并會受到保護(hù)以防無意的或未經(jīng)授權(quán)的調(diào)整。
用于調(diào)用預(yù)設(shè)參數(shù)的數(shù)字輸入
轉(zhuǎn)角和壓力控制值的斜坡時間
控制值和實際值的模擬輸入
選通輸入和綜合故障輸出
兩個感應(yīng)測量系統(tǒng)的振蕩器/解調(diào)器
定時,流量可控輸出級
內(nèi)部電源電壓的切換電源設(shè)備
功能和狀態(tài)顯示 LED
可通過顯示屏和/或 Bodac 配置的 2 個測量插口
串行接口 RS 232
通過局部總線,多可互連 32 個控制電子元件進(jìn)行參數(shù)設(shè)置和診斷
大小的選擇(A4VS…HS4 的大小從 40 到 1000,A2V…EO4的大小從 500 到 1000)和參數(shù)化通過 BODAC 進(jìn)行
泵 A4VHO 450 HS4 的參數(shù)設(shè)置
閥位置控制器
帶附屬轉(zhuǎn)角控制器的壓力控制器
可設(shè)置功率限制的參數(shù)
泄漏補(bǔ)償
主/從能力
系泊能力
示波器功能
可設(shè)置測試輸出的參數(shù)
診斷顯示
德國力士樂REXROTH柱塞泵放大器訂貨號和型號:
R901044346 VT-VPCD-1-18/V0/1-0-1
R901089559 VT-VPCD-1-16/V0/1-P-1
0811405159 VT-VPRAP1-540-10/V0/SI
R901227616 VT-HACD-3-2X/P-I-00/000
力士樂REXROTH數(shù)字軸控制
VT-HNC100…3X型
組件系列3X
數(shù)字軸控制VT-HNC100…3X是一種可編程的數(shù)控控制,多可用于四個受控軸。它符合
液壓傳動閉環(huán)控制的具體要求。
VT-HNC100…3X專為在惡劣的工業(yè)環(huán)境中使用而設(shè)計,具有抗干擾性、機(jī)械振動、沖擊性和耐氣候性。
應(yīng)用領(lǐng)域:機(jī)床、塑料加工機(jī)器、專用機(jī)器、壓力機(jī)、傳輸系統(tǒng)。
技術(shù)功能:
序列編程
定位
壓力/力控制
壓差控制
同步
曲線
凸輪
液壓軸
測量系統(tǒng):
增量或(SSI)
模擬0至±10 V和4至20 mA
驅(qū)動可變輸出電壓或電流
可自由配置的控制器變體
位置/壓力/力/速度控制器
路徑相關(guān)制動
替代閉環(huán)控制(位置/力)
4個軸的同步控制
編程
使用PC進(jìn)行用戶編程
具有子程序技術(shù)和條件的NC語言
跳躍
功能序列的每個軸1個NC程序
1軸跨越輔助程序
數(shù)控加工速度的可變設(shè)置
控制器掃描時間的可變設(shè)置
活動
舒適地管理機(jī)器和測量
PC上的數(shù)據(jù)
服務(wù)接口
RS 232
TCP/IP(不適用于Version Compact)
過程連接
數(shù)字輸入和輸出,
模擬輸入和輸出,
PROFIBUS DP,摩托羅拉格式的PROFIBUS DP,CANopen,用于與高級控制進(jìn)行通信
PROFINET RT
EtherNet/IP
CE符合EMC指令2004/108/EC和EMVG
適用的統(tǒng)一標(biāo)準(zhǔn):
EN 61000-6-2:2005
EN 61000-6-3:2007
開發(fā)特定于應(yīng)用程序的數(shù)據(jù)集構(gòu)成了VT-HNC100…3X功能的基礎(chǔ)。這些數(shù)據(jù)集在PC上生成并發(fā)送到VT-HNC100-…3X。用戶程序和數(shù)據(jù)集的連接稱為項目。此軟件項目規(guī)劃是根據(jù)以下固定步驟執(zhí)行的:
1.VT-HNC100…3X的任務(wù)被定義并記錄在流程圖中。在這方面,定義了輸入和輸出以及所使用的參數(shù)的含義。
2.流程圖的功能是在一系列NC命令中實現(xiàn)的。
3.定義了機(jī)床數(shù)據(jù)(傳感器和控制器的選擇)和數(shù)控程序的參數(shù)。
4.數(shù)據(jù)被發(fā)送到VT-HNC100…3X。
5.設(shè)置和程序順序在機(jī)器上進(jìn)行了優(yōu)化。
德國力士樂REXROTH數(shù)字控制軸訂貨號和型號:
R901254694 VT-HNC100-1-3X/N-I-00/000
R901108539 VT-HNC100-2-31/P-I-00/000
力士樂REXROTH比例流量閥的閥放大器
VT-VRPA1-151-1X
R901057060 VT-VRPA1-151-11/V0/0
R901057060 VT-VRPA1-151-12/V0/0
R900952204 VT-VRPA1-51-11
組件系列 1X
模擬,歐洲板卡格式
用于閥:2FRE 10、2FRE 16
差分輸入,可從電壓輸入轉(zhuǎn)換到電流輸入
兩個非絕緣控制值輸入
選通輸入和“斜坡關(guān)閉”輸入
振幅、零電位和可調(diào)節(jié)斜坡時間
工作電壓反向極性保護(hù)
控制值和理論值的輸出
“準(zhǔn)備就緒”的 LED 顯示
限制和位置控制器
從斜坡發(fā)生器進(jìn)行輸出時,控制值電壓將到達(dá)“Gw”電位計,該電位計可通過面板使用并用作衰減器。也可用于設(shè)定閥門的大充液流量。下游限幅器將控制值限制為 105 % 至 -5 %(例如,在過大的控制值電壓下或通過對電位計的零位“Zw”和基本值“Gw”進(jìn)行調(diào)整),以防止閥芯沖撞機(jī)械終端位置。限幅器的輸出信號是位置控制值,該值將提供給 PID 控制器并通過輸出級提供給板卡面板上的測量插口“w”以及連接器板 X1 的 端口 28c(斜坡和限幅器后的控制值)。控制值測量插口“w”的 +6 V 電壓與 +100 % 的控制值相對應(yīng)。PID 控制器針對 DBRTE 和 FRE 閥門已特別進(jìn)行優(yōu)化。在控制器中,位置控制值與實際位置值將會進(jìn)行比較;如果存在差異,相應(yīng)的控制輸出將前饋至電流輸出級控制閥門比例電磁鐵的輸出信號。
位置檢測
位置傳感器電子元件包括具有用于控制感應(yīng)式位置傳感器的下游驅(qū)動器的振蕩器和用于分析位置傳感器信號(理論值)的解調(diào)器。振蕩器頻率大約為 2.5 kHz。感應(yīng)式位置傳感器必須作為帶有“中間”傳感的節(jié)流回路進(jìn)行連接。位置傳感器電子元件在工廠已調(diào)節(jié)。較長的線或電容式位置傳感器的線可能需要重新調(diào)整零位(通過電位計“Zx”)。可在實際值測量插口上測量理論值(對應(yīng)于閥芯位置)。
注意:
與控制值相比,實際值信號會為以反向形式輸出。100 % 路徑在理論值測量插口和連接器板 X1 的端口 32a 處對應(yīng)為 -6 V。
選通輸入
通過選通輸入 20a 處的 > 10 V 信號,啟用輸出級和 I 控制器(由面板上的 LED 黃色燈指示)。通過設(shè)置跳線 X3,使用選通輸入的信號即可單獨地啟用它們。之后的轉(zhuǎn)換輸入將無效。
[ ] = 對電路圖的賦值
使用外部時間電位計時,斜坡時間的內(nèi)部電位計必須設(shè)置為大值(“t1”和“t2”測量插口處電壓約為 20 mV)。當(dāng)外部電位計的電阻值與內(nèi)部電位計(約為 500 kΩ)的電阻值并聯(lián)時,大斜坡時間將會減小。在這種情況下,將不能單獨設(shè)置上升向下斜坡的斜坡時間。
通過應(yīng)用 > 10 V 的電壓到“斜坡關(guān)閉”轉(zhuǎn)換輸入或設(shè)置插入式跳線 X4,將斜坡時間設(shè)置為小值(約 15 ms)。之后的轉(zhuǎn)換輸入將無效。小值對于兩個方向均為有效。
斜坡時間的計算
跳線 X9 插頭(斜坡時間“短”)
跳線 X8 插頭(斜坡時間“長”)
下列內(nèi)容適用:
U = 測量插口處電壓以伏特為單位“t1”或“t2”
t= 上升和向下斜坡的斜坡時以秒為單位
斜坡功能
下游斜坡發(fā)生器 [3] 根據(jù)給定的階躍式輸入信號產(chǎn)生斜坡形狀的輸出信號。可使用面板上的“t1”(上升斜坡)和“t2”(向下斜坡)電位計對輸出信號的時間常量(斜坡時間)進(jìn)行調(diào)整。大的斜坡時間指的是 100 % 的控制值階躍,視跳線設(shè)置 (X8,X9) 而定,該時間可能是約 5 s 或 50 s。如果將小于 100 % 的控制值階躍轉(zhuǎn)換為斜坡發(fā)生器輸入,則斜坡時間將相應(yīng)縮短。可以在“t1”(上升斜坡)和“t2”(向下斜坡)的測量插口處檢查當(dāng)前斜坡時間。
供電設(shè)備
應(yīng)用工作電壓后,內(nèi)部供電設(shè)備將會產(chǎn)生與測量零位(M0)相比 ±9 V 電壓。根據(jù)對負(fù)載零位(L0)的測量,其提高+9 V。電壓 +9 V 和 -9 V(-9 V 對應(yīng)于 L0)向連接器板 X1 流入并于使用于外部(例如用于控制值電位計)。大負(fù)載能力為 25 mA。
準(zhǔn)備就緒
如果滿足以下條件,放大器板卡將準(zhǔn)備就緒:
工作電壓 > 20 V
內(nèi)部電源電壓不對稱
位置傳感器線無電纜中斷
線圈導(dǎo)線無短路
“準(zhǔn)備就緒”狀態(tài)通過面板上的綠色 LED 指示。
控制值
控制值電壓直接由供電設(shè)備 [6] 的調(diào)節(jié)電壓 +9 V 或通過外部控制值電位計。對于“控制值 1”輸入,+9 V ≙ +100 %,對于“控制值 2”輸入,+6 V ≙ +100 %。控制值輸入的參考點 1 和 2 始終為 M0 (18ac)。控制值輸入 3 為差分輸入(0 至 +10 V)。可通過將跳線設(shè)置為電流輸入(0 至 20 mA 或 4 至 20 mA)進(jìn)行配置。如果控制值由具有不同參考電位的外部電子元件,則必須使用差分輸入。
斷開或連接控制值電壓時,確保在任何情況下兩根信號線都同時與輸入斷開,或者同時與之相連。所有控制值在前饋之前都將根據(jù)其值和符號進(jìn)行累加。使用“Zw”電位計可以補(bǔ)償控制值分壓中的偏移電壓。
力士樂REXROTH比例方向閥的閥放大器
VT-VRPA2-1-1X, VT-VRPA2-2-1X
R900979887 VT-VRPA2-1-11/V0/T1
R900979885 VT-VRPA2-1-11/V0/T5
R900979887 VT-VRPA2-1-12/V0/T1
R900979889 VT-VRPA2-2-1X/V0-T1
組件系列 1X
模擬,歐洲板卡格式
用于閥:4WRE
電壓和電流的差分輸入
四個可調(diào)用控制值輸入、斜坡時間輸入
用于選通、斜坡、改變極性和控制值啟用的數(shù)字輸入
帶有 5 個斜坡和相位識別的型號 T5
可調(diào)節(jié)斜坡時間、階躍電平和大線圈電流
工作電壓反向極性保護(hù)
可通斷的測量插口(型號 T5)
“準(zhǔn)備就緒”輸出
供電設(shè)備帶直流/直流轉(zhuǎn)換器,不帶提高零點
可通過閉合跳線 J3 使上述斜坡時間增加十倍。
特性曲線發(fā)生器
可使用可調(diào)節(jié)特性曲線發(fā)生器單獨設(shè)置正信號和負(fù)信號的階躍電平和大值,并根據(jù)液壓要求進(jìn)行調(diào)節(jié)。穿過零電位的特性曲線的實際發(fā)展不是階躍式的,而是線性的。
限幅器
內(nèi)部控制值被限制在約公稱范圍的 ±110 %。
振蕩器
振蕩器生成感應(yīng)式位置傳感器的控制信號。
解調(diào)器
解調(diào)器根據(jù)位置傳感器信號提供閥芯位置的實際值信號。100 % ≙ 10 V
位置控制器
位置控制器以閥門特定的方式進(jìn)行優(yōu)化。
功率輸出級
電流輸出級產(chǎn)生比例閥的定時線圈電流。該線圈電流被限制在每輸出 2.5 A 至 2.8 A 之間。輸出級輸出具有防短路功能。出現(xiàn)內(nèi)部故障信號或使能信號缺失時,輸出級將被斷電。
故障識別
監(jiān)控位置傳感器電纜的目的是發(fā)現(xiàn)主側(cè)電纜中斷和短路,以及輸出級的過電流。
電流和電壓輸入之間不進(jìn)行切換。輸入始終可用。
控制值啟用
可以啟用四個控制值信號“w1”至“w4”。外部控制值電壓(控制值 1 至 4)直接通過 +10 V 和 –10 V 調(diào)節(jié)電壓輸出或通過外部電位計進(jìn)行定義。如果這些控制值輸入直接連接至調(diào)節(jié)電壓,則使用電位計“w1”至“w4”設(shè)置控制值。使用外部電位計時,內(nèi)部電位計將用作衰減器或限幅器。
一次只能操作一個啟用。如果同時執(zhí)行了多個啟用,啟用 “1”優(yōu)先級低,啟用 “4”優(yōu)先級高。
各個處于活動狀態(tài)的啟用通過面板上的黃色 LED 指示。
控制值改變極性
通過輸入信號在內(nèi)部產(chǎn)生的控制值、控制值啟用和零電位偏移信號可通過外部信號或跳線 J1 改變極性。改變極性情況通過面板上的 LED“–1”進(jìn)行指示。
啟用功能
啟用功能可啟用電流輸出級并將內(nèi)部控制值信號前饋到斜坡發(fā)生器。使能信號通過面板上的 LED 進(jìn)行指示。如果連接啟用,則內(nèi)部控制值(無論類控制值預(yù)設(shè))會按所設(shè)置的斜坡時間進(jìn)行更改。這樣,受控閥就不會突然打開。
斜坡發(fā)生器
斜坡發(fā)生器限制控制輸出傾斜。下游階躍函數(shù)和振幅衰減器不會延長或縮短斜坡時間。
使用跳線 J2 將斜坡時間設(shè)置為小值 (<2 ms)(斜坡關(guān)閉)。
外部斜坡時間設(shè)置:
可使用外部電位計延長內(nèi)部設(shè)置的斜坡時間。此設(shè)置可通過測量插口進(jìn)行驗證。如果電纜中斷,則內(nèi)部默認(rèn)設(shè)置將自動有效。
設(shè)置和測量斜坡時間的表格:
供電設(shè)備
放大器板卡隨附帶接通電流限制器的供電設(shè)備。此設(shè)備提供了所有內(nèi)部所需的正和負(fù)電源電壓。
控制值預(yù)設(shè)
通過將差分輸入和電流輸入、啟用信號及零位偏移(零電位電位計“Zw”)中提供的外部控制值信號加和(總和),計算內(nèi)部控制值信號。
力士樂REXROTH用于比例壓力閥和比例流量控制閥的閥放大器
VT-VSPA1(K)-1-1X
R900033823 VT-VSPA1-1-11
R900033823 VT-VSPA1-1-12
R901152637 VT-VSPA1-11-10/V0/0
組件系列 1X
模擬,歐洲板卡格式
適用閥門::
DBEP 6(A/B) ...1X、
DBE(M) 10 ...5X、DBE(M) 20 ...5X、DBE(M) 30 ...3X、
(Z)DBE 6...1X、
DRE(M) 10 ...5X、DRE(M) 25 ...5X、
DRE(M) 32 ...4X、
ZDRE 10 VP ...1X
差分輸入,可從電壓輸入轉(zhuǎn)換到電流輸入
附加控制值輸入 0 至 +9 V
斜坡發(fā)生器,可分別針對向上和向下方向進(jìn)行調(diào)節(jié)
定時功率輸出級
"準(zhǔn)備就緒"消息(帶有 LED 顯示的 VT-VSPA1K-1 型號)
電源的反向極性保護(hù)
4 至 20 mA 電流輸入的電纜中斷檢測
線圈導(dǎo)線的短路保護(hù)
線圈導(dǎo)線的電纜中斷檢測
借助供電設(shè)備的 +9 V 調(diào)節(jié)電壓,可直接或通過外部控制值電位計來控制值輸入 1 處的控制值電壓。
力士樂REXROTH用于比例壓力閥和比例流量控制閥的閥放大器
VT-VSPA1-2
R900782310 VT-VSPA1-2-10/V0/0
組件系列 1X
模擬,歐洲板卡格式
適用閥門:
DBET-6X、DBEM...7X
特點
差分輸入(0 ... +10 V)
電流輸入(4 ... 20 mA)
可分別調(diào)節(jié)"上/下"斜坡時間的斜坡發(fā)生器
外部斜坡時間預(yù)設(shè)值
選通輸入
定時功率輸出級
"準(zhǔn)備就緒"消息
電源電壓的反向極性保護(hù)
短路保護(hù)和線圈導(dǎo)線的電纜斷連檢測
供電設(shè)備
放大器隨附了帶接通電流限制器的供電設(shè)備。此設(shè)備提供了所有內(nèi)部所需的正和負(fù)電源電壓。
控制值啟用
可以調(diào)用四個控制值啟用 "w1" 至 "w4"。外部電壓(控制值 1 至 4)通過電壓輸出 +10 V 直接進(jìn)行定義,或通過外部電位計進(jìn)行定義。如果這些控制值輸入直接連接至調(diào)節(jié)電壓,則使用電位計 "w1" 至 "w4" 設(shè)置控制值。使用外部電位計時,內(nèi)部電位計將用作衰減器或限制器。
在同一時刻,只能操作一個啟用。如果同時操作了幾個啟用,啟用 "w1" 優(yōu)先權(quán)低,啟用 "w4" 優(yōu)先權(quán)高。激活的啟用通過黃色 LED 進(jìn)行指示。
使能功能
使能功能可啟用功率輸出級并將內(nèi)部控制值信號前饋到斜坡發(fā)生器。使能信號通過 LED 進(jìn)行指示。如果連接釋放(通過 24 V 輸入或跳線 J1),則內(nèi)部控制值(無論類控制值規(guī)格)會按所設(shè)置的斜坡時間發(fā)生變化。這樣,受控閥不會突然打開。
斜坡發(fā)生器
斜坡發(fā)生器限制控制輸出上升。下游限幅器不會延長或縮短斜坡時間。斜坡時間可通過跳線 J3 以 10 為乘數(shù)進(jìn)行更改。
力士樂REXROTH用于比例方向閥和比例壓力閥的閥放大器
VT-VSPA2-1-2X
R901002090 VT-VSPA2-1-21/V0/T1
R901002095 VT-VSPA2-1-2X/V0/T5
組件系列 2X
模擬,歐洲板卡格式
用于閥:
4WRA...-2X
4WRZ...-7X
3DREP6...-2X
模擬放大器板卡VT-VSPA2-1-2X/… 類型
→適用于控制 4WRA 類型,標(biāo)稱尺寸 6 和 10…2X,WRZ…7X 與 3DREP…2X 的閥
→裝配在歐洲格式 100 x 160 mm 結(jié)構(gòu)形式的印制板中,適合安裝在機(jī)架中
→控制值輸入:差動輸入 ± 10 V;四個控制值輸入, 啟動電壓為 ±10 V;電流輸入 4 至 20 mA
→通過 24V 輸入或跳線改變內(nèi)部控制值信號極性
→通過相位識別(24V 輸入)或斜坡時間啟動(24V 輸入)
選擇斜坡時間(選項 T5)
→通過跳線切換斜坡時間范圍
→通過可分別調(diào)節(jié)的步長和大值進(jìn)行特性曲線校正
→選通輸入
→“斜坡開/關(guān)” 輸入
→輸出信號“ 預(yù)備狀態(tài)”
→可通斷的測量插口(選項 T5)
→電源電壓的極性保護(hù)
→電源帶交流/直流轉(zhuǎn)換器,不帶提高零點
注意:
將放大器板卡 VT-VSPA2-1-2X 作為 VT 3000-3X、VT 3006-3X、VT 3013-3X、VT3014-3X、VT 3017-3X、VT 3018-3X、VT 3026-3X、VT-VSPA2-1-1X/... 或 VT-VSPA2-50-1X/… 的替代使用時,要遵守補(bǔ)充信息 30110-Z中提供的有關(guān)配置和設(shè)置的注意事項。
力士樂REXROTHPCB支架 VT3002-1-2X/48F
R900020154 VT3002-1-20/48F
放大器卡架
用于在控制柜中輕松安裝卡。用于安裝在 DIN 導(dǎo)軌上。
電氣連接說明 48 針連接器,F(xiàn) 型
設(shè)計 板卡插槽
重量 [kg] 0.350801
力士樂REXROTH直動式減壓閥
DR6DP
規(guī)格 6
組件系列 5X
大工作壓力 35 bar
大流量 60 l/min
R900472470 DR6DP2-5X/25YM
用于底板安裝
油口安裝面,符合 ISO 440-03-02-0-05(帶或不帶孔)
5 檔壓力
4 個可選調(diào)整類型:
旋鈕
六角螺紋銷和保護(hù)帽
帶刻度可鎖定旋鈕
帶刻度旋鈕
單向閥,可選
防腐蝕設(shè)計
DR 6 DP 型閥門是三通式直動減壓閥,即配有次級回路壓力限制。
它可以用于降低系統(tǒng)壓力。通過調(diào)整類型設(shè)置次級壓力調(diào)整。
閥門在初始位置為打開狀態(tài)。液壓油可以順暢地從通道 P 流向通道 A。同時,通道 A 內(nèi)的壓力通過閥芯端面上的控制線路由壓縮彈簧來控制。如果通道 A 內(nèi)的壓力通過壓縮彈簧上設(shè)置的值提高,控制閥芯進(jìn)入調(diào)整位置并保持通道 A 內(nèi)的壓力恒定。
信號和先導(dǎo)油由內(nèi)部通過控制線路從通道 A 輸出。
如果通道 A 內(nèi)的壓力在執(zhí)行器上外部力的作用下繼續(xù)提高,會將控制閥芯繼續(xù)推向壓縮彈簧。
由此,通道 A 會通過控制閥芯上的控制邊與通道 T(Y) 相連。流入容器內(nèi)的液壓油過多,導(dǎo)致壓力僅可稍微提高。
漏油始終由外部通過通道 T(Y) 排出彈簧腔。
為了能夠順利從通道 A 流回通道 P,可以選擇安裝一個單向閥。
通過壓力計接口可以控制次級壓力。
德國力士樂REXROTH減壓閥訂貨號和型號:
R900413204 DR6DP1-54/75Y
R900472470 DR6DP2-53/25YM
R900450964 DR6DP2-53/75YM
R900450964 DR6DP2-54/75YM
R900413243 DR6DP2-54/210Y
R900472420 DR6DP3-54/75YM
R900476911 DR6DP3-54/150YM
比例控制技術(shù)是在開關(guān)控制技術(shù)和伺服控制技術(shù)之間的過度技術(shù),采用比例放大器控制比例電磁鐵,實現(xiàn)對比例閥的連續(xù)控制,從而實現(xiàn)對液壓系統(tǒng)壓力、流量、方向的無級調(diào)節(jié);但是用比例閥進(jìn)行速度控制時,如果負(fù)載是變化的,那么執(zhí)行元件的速度就會受負(fù)載變化的影響,負(fù)載小時速度快,負(fù)載大時速度慢,于是在系統(tǒng)設(shè)計時,人們引用了壓力補(bǔ)償器,它可以使比例閥閥口的壓差保持恒定,使執(zhí)行元件的速度不受負(fù)載變化的影響。
液控伺服閥主要是指電液伺服閥,它在接受電氣模擬信號后,相應(yīng)輸出調(diào)制的流量和壓力。它既是電液轉(zhuǎn)換元件,也是功率放大元件,它能夠?qū)⑿」β实奈⑷蹼姎廨斎胄盘栟D(zhuǎn)換為大功率的液壓能(流量和壓力)輸出。在電液伺服系統(tǒng)中,它將電氣部分與液壓部分連接起來,實現(xiàn)電液信號的轉(zhuǎn)換與液壓放大。電液伺服閥是電液伺服系統(tǒng)控制的核心。
液控伺服閥是在伺服系統(tǒng)中將電信號輸入轉(zhuǎn)換為功率較大的壓力或流量壓力信號輸出的執(zhí)行元件。它是一種電液轉(zhuǎn)換和功率放大元件。伺服閥的靈敏度高,快速性好,能將很小的電信號(例如10毫安)轉(zhuǎn)換成很大的液壓功率(如幾十匹馬力以上),可以驅(qū)動多種類型的負(fù)載。過去人們曾把噴嘴檔板閥、射流管或滑閥伺服馬達(dá)等液壓放大裝置都列入伺服閥范圍內(nèi)。20世紀(jì)70年代以來,伺服閥一般僅指電液伺服閥。
力士樂比例閥4WRTE25E220L-46/6EG24K31/A1M
R900954281 4WRTE25E220L-4X/6EG24K31/A1M
R978031519 4WRTE25E220L-4X/6EG24EK31/A5V
R901380698 4WRTE25E220L-4X/6EG24ETK31/F1M
R901377869 4WRTE25E220L-4X/6EG24K31/F1M
R901365359 4WRTE25E220P-4X/6EG24ETK31/A1M
R901385029 4WRTE25E350L-4X/6EG24EK31/F1M
R901281604 4WRTE25E350L-4X/6EG24ETK31/A5M-280
R901125194 4WRTE25E350L-4X/6EG24ETK31/F1M
R901349958 4WRTE25E350L-4X/6EG24K31/A1V
R900978845 4WRTE25E350L-4X/6EG24K31/A5M=LB
R901318439 4WRTE25E350L-4X/6EG24K31/F1M
R978917234 4WRTE25E350L-4X/6EG24TK31/A1M
R901119127 4WRTE25E350L-4X/6EG24TK31/F1M
R901135448 4WRTE25E350P-4X/6EG24ETK31/A1V
R901229276 4WRTE25E350P-4X/6EG24K31/F1M
R900729353 4WRTE25E350P-4X/6EG24TK31/A1WB152M
R901358772 4WRTE25E350R-4X/6EG24K31/A5M
R900964305 4WRTE25E4-350S-4X/6EG24K31/A1WB152M
R901207542 4WRTE25Q1-350L-4X/6EG24TK31/A5M
R901165591 4WRTE25Q2-350P-4X/6EG24K31/A1M
R901131249 4WRTE25Q2-350P-4X/6EG24K31/A5WB162M
R901164412 4WRTE25R1-350L-4X/6EG24K31/A1WB15M
R901386799 4WRTE25R3-350R-4X/6EG24K31/A5M
R901130652 4WRTE25R3-350R-4X/6EG24K31/A5M=LB
R901258098 4WRTE25V1-220L-4X/6EG24EK31/A5M-280
R901208731 4WRTE25V1-220L-4X/6EG24EK31/F1M
R901093962 4WRTE25V1-220L-4X/6EG24ETK31/A5M
R901272302 4WRTE25V1-220L-4X/6EG24K31/A5M-280
R901144221 4WRTE25V1-220L-4X/6EG24K31/F1V
R901341547 4WRTE25V1-220L-4X/6EG24TK31/A1M
R901271687 4WRTE25V1-220P-4X/6EG24EK31/A1M
R901317685 4WRTE25V1-220P-4X/6EG24EK31/F1M
R901364023 4WRTE25V1-350L-4X/6EG24EK31/A1V
R901143740 4WRTE25V1-350L-4X/6EG24EK31/A5M-280
R901093689 4WRTE25V1-350L-4X/6EG24EK31/F1M
R901355848 4WRTE25V1-350L-4X/6EG24ETK31/F1M
R901291879 4WRTE25V1-350L-4X/6EG24ETK31/F1V
R901271689 4WRTE25V1-350P-4X/6EG24EK31/A1M
R901372417 4WRTE25V1-350P-4X/6EG24EK31/A1V
R901403913 4WRTE25V1-350P-4X/6EG24K31/F1V
R901417524 4WRTE25V220L-4X/6EG24ETK31/F1M
R901138769 4WRTE25V220L-4X/6EG24K31/A1WB15M
R901168171 4WRTE25V220L-4X/6EG24TK31/A1M
R901212530 4WRTE25V220P-4X/6EG24EK31/A1M
R901184457 4WRTE25V220P-4X/6EG24ETK31/A1V-280
R901392994 4WRTE25V220P-4X/6EG24K31/A5V
R901353348 4WRTE25V220P-4X/6EG24TK31/F1M
R901263616 4WRTE25V350L-4X/6EG24EK31/F1M
R901097361 4WRTE25V350L-4X/6EG24K31/A1WB15M
R901322880 4WRTE25V350L-4X/6EG24TK31/A1M
R901268849 4WRTE25V350P-4X/6EG24EK31/F1M
R901301442 4WRTE25V350P-4X/6EG24EK31/F1V
R901409258 4WRTE25V350P-4X/6EG24ETK31/F1M
R901384714 4WRTE25V350P-4X/6EG24K31/A5M
R901352984 4WRTE25V5-350P-4X/6EG24TK31/A5M
R901212956 4WRTE25W6-220L-4X/6EG24EK31/F1M
R901417696 4WRTE25W6-220L-4X/6EG24K31/A1V
R901341954 4WRTE25W6-220L-4X/6EG24K31/F1M
R901342143 4WRTE25W6-220L-4X/6EG24K31/F1V
R978007766 4WRTE25W6-350L-4X/6EG24ETK31/A5M
R901207007 4WRTE25W6-350L-4X/6EG24ETK31/F1V
R901235033 4WRTE25W6-350L-4X/6EG24ETK31/F1WB15M
R978919344 4WRTE25W6-350L-4X/6EG24K31/A5M
R901079443 4WRTE25W6-350L-4X/6EG24K31/F1M
R901215670 4WRTE25W6-350L-4X/6EG24K31/F1V
R901223160 4WRTE25W6-350P-4X/6EG24ETK31/A1M
R901212529 4WRTE25W6-350P-4X/6EG24K31/F1M
R901293999 4WRTE25W8-220L-4X/6EG24EK31/F1V
R901093690 4WRTE25W8-220L-4X/6EG24K31/A1M
R901155089 4WRTE25W8-220L-4X/6EG24K31/F1M
R901403887 4WRTE25W8-220L-4X/6EG24K31/F1V
R901207350 4WRTE25W8-220L-4X/6EG24TK31/F1M
R901090630 4WRTE25W8-350L-4X/6EG24EK31/A1V
R901370619 4WRTE25W8-350L-4X/6EG24EK31/A5M-280
R901091326 4WRTE25W8-350L-4X/6EG24EK31/A5V
R901322335 4WRTE25W8-350L-4X/6EG24ETK31/A5M=LB
R901121430 4WRTE25W8-350L-4X/6EG24ETK31/F1M
R901322980 4WRTE25W8-350L-4X/6EG24ETK31/F1V
R901094207 4WRTE25W8-350L-4X/6EG24K31/A1V
R901076888 4WRTE25W8-350L-4X/6EG24K31/F1M
R901444957 4WRTE27E1-500L-4X/6EG24EK31/A1WB15M
R901225328 4WRTE27E1-500L-4X/6EG24EK31/A5M
R901339436 4WRTE27E1-500L-4X/6EG24EK31/A5V
R901380593 4WRTE27E1-500L-4X/6EG24ETK31/F1M
R901016732 4WRTE27E1-500L-4X/6EG24K31/A1M
R901356860 4WRTE27E1-500L-4X/6EG24K31/A5M
R901349435 4WRTE27E1-500L-4X/6EG24K31/F1M
R901117791 4WRTE27E1-500P-4X/6EG24EK31/A1M
R901174766 4WRTE27E500L-4X/6EG24EK31/A1M
R901254425 4WRTE27E500L-4X/6EG24EK31/F1M
R901349438 4WRTE27E500L-4X/6EG24K31/F1M
R901422545 4WRTE27E500L-4X/6EG24TK31/A1M
R901127618 4WRTE27E500P-4X/6EG24K31/A5M
R901120326 4WRTE27Q2-500P-4X/6EG24K31/A1M
R901132052 4WRTE27Q2-500P-4X/6EG24K31/A5WB15M
R901218944 4WRTE27R500L-4X/6EG24ETK31/A5M
R901116051 4WRTE27V1-500L-4X/6EG24EK31/F1M
R901356557 4WRTE27V1-500L-4X/6EG24ETK31/A1M
R901119763 4WRTE27V1-500L-4X/6EG24ETK31/A5M
R901180641 4WRTE27V1-500L-4X/6EG24ETK31/F1M
R901310512 4WRTE27V1-500L-4X/6EG24K31/A1M
R901284895 4WRTE27V1-500L-4X/6EG24K31/A5M
R901349441 4WRTE27V1-500L-4X/6EG24K31/F1M
R901309465 4WRTE27V500L-4X/6EG24ETK31/F1M
R901110479 4WRTE27V500L-4X/6EG24K31/F1M
R901212549 4WRTE27V500P-4X/6EG24EK31/A1M
R901185058 4WRTE27V500P-4X/6EG24EK31/F1M
R901351160 4WRTE27V500P-4X/6EG24ETK31/F1M
R901349445 4WRTE27W6-500L-4X/6EG24K31/F1M
R901072889 4WRTE27W6-500L-4X/6EG24K31/F1V
R901359422 4WRTE27W8-500L-4X/6EG24EK31/F1M
R901094203 4WRTE27W8-500L-4X/6EG24K31/A1V
R901162070 4WRTE27W8-500L-4X/6EG24K31/A5M
R901097371 4WRTE27W8-500L-4X/6EG24K31/F1M
R901403261 4WRTE27W8-500L-4X/6EG24K31/F1V
R901321580 4WRTE27W8-500P-4X/6EG24K31/A5M
R901180765 4WRTE32E1-400L-4X/6EG24K31/A1WB15M
R901253094 4WRTE32E1-600L-4X/6EG24EK31/F1V
R901225556 4WRTE32E1-600L-4X/6EG24ETK31/A1M
R901145118 4WRTE32E1-600L-4X/6EG24ETK31/A5WB15M
R901307562 4WRTE32E1-600L-4X/6EG24ETK31/F1M
R901190181 4WRTE32E1-600L-4X/6EG24K31/A1V
R901160745 4WRTE32E1-600L-4X/6EG24K31/A1WB15M
R901262579 4WRTE32E1-600L-4X/6EG24K31/A5M
R901349447 4WRTE32E1-600L-4X/6EG24K31/F1M
R901131400 4WRTE32E400L-4X/6EG24K31/A1V
R901238652 4WRTE32E400L-4X/6EG24K31/F1M
R901066924 4WRTE32E600L-4X/6EG24ETK31/A5M
R901131398 4WRTE32E600L-4X/6EG24K31/A1V
R901307116 4WRTE32E600L-4X/6EG24K31/A1WB15M
R901349451 4WRTE32E600L-4X/6EG24K31/F1M
R901374965 4WRTE32E600P-4X/6EG24ETK31/A1V
R901445270 4WRTE32E600P-4X/6EG24ETK31/F1M
R901412101 4WRTE32E600P-4X/6EG24ETK31/F1V
R901235556 4WRTE32E600P-4X/6EG24K31/A5M
R901174373 4WRTE32Q2-600P-4X/6EG24ETK31/A5M
R901164449 4WRTE32R1-600L-4X/6EG24K31/A1WB15M
R901323939 4WRTE32V1-600L-4X/6EG24EK31/A1M
R901362850 4WRTE32V1-600L-4X/6EG24K31/A1V
R901446711 4WRTE32V1-600P-4X/6EG24K31/A1M
R901190180 4WRTE32V400L-4X/6EG24K31/A1V
R901094076 4WRTE32V400L-4X/6EG24K31/A1WB15M
R901170733 4WRTE32V400P-4X/6EG24ETK31/A1V
R901126386 4WRTE32V400P-4X/6EG24ETK31/A1V-280
R901407812 4WRTE32V400P-4X/6EG24ETK31/F1M
R901352981 4WRTE32V400P-4X/6EG24K31/A1M
R901136768 4WRTE32V5-600P-4X/6EG24TK31/A1M
R901164193 4WRTE32V600L-4X/6EG24ETK31/A1M
R901190179 4WRTE32V600L-4X/6EG24K31/A1V
R901307348 4WRTE32V600P-4X/6EG24EK31/A1M-280
R901116727 4WRTE32V600P-4X/6EG24ETK31/A1V-280
R901412107 4WRTE32V600P-4X/6EG24ETK31/F1V
R901227848 4WRTE32V600P-4X/6EG24K31/A1M
R901160781 4WRTE32V600P-4X/6EG24TK31/A1V-280
R901384897 4WRTE32V600P-4X/6EG24TK31/A5M
R901392815 4WRTE32W6-400L-4X/6EG24EK31/F1M
R901269495 4WRTE32W6-400P-4X/6EG24K31/F1M
R901089845 4WRTE32W6-600L-4X/6EG24EK31/A1M
R901102528 4WRTE32W6-600L-4X/6EG24K31/A5M
R901216920 4WRTE32W6-600L-4X/6EG24K31/F1M
R987171978 4WRTE32W6-600P-4X/6EG24K31/A1M
R901295949 4WRTE32W8-400L-4X/6EG24EK31/A1M
R901287893 4WRTE32W8-400L-4X/6EG24ETK31/F1M
R901105809 4WRTE32W8-600L-4X/6EG24EK31/A5M
R901111511 4WRTE32W8-600L-4X/6EG24ETK31/F1M
R901178229 4WRTE32W8-600L-4X/6EG24K31/F1M
R901374555 4WRTE32-E600P-4X/6EG24K31/A1V
R901253763 4WRTE35E1-1000L-4X/6EG24EK31/F1V
R901187312 4WRTE35E1-1000L-4X/6EG24ETK31/A1M
R901077004 4WRTE35E1-1000L-4X/6EG24K31/A1M
R901242220 4WRTE35E1-1000L-4X/6EG24K31/A1V
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力士樂REXROTH高響應(yīng)方向閥,先導(dǎo),帶集成電控裝置(OBE)和電氣位置反饋4WRDE -5X
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力士樂比例閥4WRTE25E220L-46/6EG24K31/A1M
伺服閥的主閥一般來說和換向閥一樣是滑閥結(jié)構(gòu),只不過閥芯的換向不是靠電磁鐵來推動,而是靠前置級閥輸出的液壓力來推動,這一點和電液換向閥比較相似,只不過電液換向閥的前置級閥是電磁換向閥,而伺服閥的前置級閥是動態(tài)特性比較好的噴嘴擋板閥或射流管閥。
也就是說,伺服閥的主閥是靠前置級閥的輸出壓力來控制的,而前置級閥的壓力則來自于伺服閥的入口p,假如p口的壓力不足,前置級閥就不能輸出足夠的壓力來推動主閥芯動作。
而我們知道,當(dāng)負(fù)載為零的時候,如果四通滑閥完全打開,p口壓力=t口壓力+閥口壓力損失(忽略油路上的其它壓力損失),如果閥口壓力損失很小,t口壓力又為零,那么p口的壓力就不足以供給前置級閥來推動主閥芯,整個伺服閥就失效了。所以伺服閥的閥口做得偏小,即使在閥口全開的情況下,也要有一定的壓力損失,來維持前置級閥的正常工作。
伺服閥其實缺點極多:能耗浪費大、容易出故障、抗污染能力差、價格昂貴等等等等,好處只有一個:動態(tài)性能是所有液壓閥中*高的。就憑著這一個優(yōu)點,在很多對動態(tài)特性要求高的場合不得不使用伺服閥,如飛機(jī)火箭的舵機(jī)控制、汽輪機(jī)調(diào)速等等。動態(tài)要求低一點的,基本上都是比例閥的天下了。
一般說來,好像伺服系統(tǒng)都是閉環(huán)控制,比例多用于開環(huán)控制;其次比例閥類型要多,有比例壓力、流量控制閥等,控制比伺服要靈活一些。從他們內(nèi)部結(jié)構(gòu)看,伺服閥多是零遮蓋,比例閥則有一定的死區(qū),控制精度要低,響應(yīng)要慢。但從發(fā)展趨勢看,特別在比例方向流量控制閥和伺服閥方面,兩者性能差別逐漸在縮小,另外比例閥的成本比伺服閥要低許多,抗污染能力也強(qiáng)!
力士樂比例閥4WRTE25E220L-46/6EG24K31/A1M
力士樂REXROTH三位四通高頻單向閥門,直接驅(qū)動,具有集成電子放大版和電氣位置反饋(OBE)4WRSEH
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力士樂REXROTH高響應(yīng)換向閥,先導(dǎo)式
力士樂REXROTH三位四通高響應(yīng)換向閥電氣位置反饋(LVDT的直流/直流)(結(jié)構(gòu)形式:耐震)4WRL...-750
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力士樂REXROTH三位四通的高響應(yīng)換向閥、先導(dǎo)式、帶電氣位置反饋(LVDT的直流/直流±10V)4WRL.V
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力士樂REXROTH三位四通的高響應(yīng)換向閥、先導(dǎo)式、電氣位置反饋(LVDT的直流/直流±10V)4WRL.E(W)
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力士樂REXROTH高響應(yīng)換向閥、先導(dǎo)式、集成的數(shù)字軸控制器(IAC多以太網(wǎng))4WRLD -3X
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力士樂REXROTH三位四通高響應(yīng)換向閥、先導(dǎo)式、電氣位置反饋和集成電子放大版(OBE)4WRLE
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力士樂REXROTH三位四通高響應(yīng)換向閥、先導(dǎo)式、電氣位置反饋和集成電子放大版(OBE)4WRLE.V
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力士樂REXROTH三位四通高響應(yīng)換向閥、先導(dǎo)式、電氣位置反饋和集成電子放大版(OBE)4WRLE.E(W)
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力士樂REXROTH三位四通高響應(yīng)換向閥、先導(dǎo)式、電氣位置反饋和集成電子放大版(OBE)4WRGE
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R900919671 4WRGE10W25L-1X/315G24TK31/C1M
R900902099 4WRGE10X50L-1X/210G15ETZ31/A1M-590
R900577827 4WRGE10X50L-1X/210G15TZ31/A1M-590
R901225437 4WRGE16E1-125L-1X/315G24K31/C1M
R901170499 4WRGE16E125L-1X/315G24EK31/A1V
R901177332 4WRGE16E125L-1X/315G24EK31/C1M
R901177016 4WRGE16E125L-1X/315G24EK31/C1V
R901230105 4WRGE16E125L-1X/315G24ETK31/A1M
R901137511 4WRGE16E125L-1X/315G24K31/A1M
R901065753 4WRGE16E200L-1X/315G24EK31/A1M
R901259410 4WRGE16E200L-1X/315G24EK31/C1M
R901060202 4WRGE16E200L-1X/315G24ETK31/A1V
R901060160 4WRGE16E200L-1X/315G24ETK31/C1M
R901265954 4WRGE16E200L-1X/315G24K31/A1M
R901239982 4WRGE16Q2-125L-1X/315G24EK31/C1M
R901224859 4WRGE16Q2-125L-1X/315G24ETK31/A1M
R901309128 4WRGE16Q2-125L-1X/315G24TK31/A1M
R901157993 4WRGE16V1-125L-1X/315G24EK31/A1M
R901051434 4WRGE16V1-125L-1X/315G24ETK31/A1WC152M
R901069188 4WRGE16V1-125L-1X/315G24K31/A1M
R901299009 4WRGE16V1-125L-1X/315G24K31/A1V
R900931322 4WRGE16V1-200L-1X/210G24ETK31/A1WC151M
R901293348 4WRGE16V1-200L-1X/315G15TK31/C1M
R901429931 4WRGE16V1-200L-1X/315G24EK31/C1M
R901279382 4WRGE16V1-200L-1X/315G24K31/C1WC152M
R901058472 4WRGE16V1-200L-1X/315G24TK31/A1M
R901304586 4WRGE16V1-200L-1X/315G24TK31/C1M
R901125282 4WRGE16V125L-1X/315G24EK31/A1M
R901199169 4WRGE16V125L-1X/315G24EK31/C1M
R901094822 4WRGE16V125L-1X/315G24K31/C1M
R901042938 4WRGE16V125L-1X/315G24TK31/A1M
R900570921 4WRGE16V125L-1X/315G24Z31/WG021MR-478
R900929761 4WRGE16V200L-1X/210G24K31/A1WC151M
R900908779 4WRGE16V200L-1X/315G15TK31/A1M
R900570857 4WRGE16V200L-1X/315G15Z31/C1VR
R901177144 4WRGE16V200L-1X/315G24K31/C1M
R900907293 4WRGE16V200L-1X/315G24K31/C1WC151M-478
R901230252 4WRGE16V200L-1X/315G24K31/C1WC152M
R901217367 4WRGE25E1-350L-1X/315G24ETK31/A1WC152M
R901151278 4WRGE25E1-350L-1X/315G24K31/C1M
R901218862 4WRGE25E250L-1X/315G24K31/A1M
R901124445 4WRGE25E250L-1X/315G24TK31/A1M
R901344464 4WRGE25V1-250L-1X/315G24ETK31/A1WC152V
R901098344 4WRGE25V1-350L-1X/315G24K31/A1WC152M
R901130979 4WRGE25V1-350L-1X/315G24TK31/A1M
R901367384 4WRGE25V250L-1X/315G24EK31/C1M
R900932491 4WRGE25V350L-1X/210G15K31/C1M-202
R900932487 4WRGE25V350L-1X/210G15K31/C1WC151M
R900570858 4WRGE25V350L-1X/315G15Z31/C1VR
R901307112 4WRGE25V350L-1X/315G24EK31/C1M
R901283313 4WRGE25V350L-1X/315G24K31/C1WC152M
力士樂比例閥R900954281 4WRTE25E220L-46/6EG24K31/A1M -
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