电控ch7

电牵引采煤机电控系统常见故障分析与处理一、一般电气故障1.按下“启动”按钮，不能启车A.检查顺槽开关是否正常。

B.检查隔离开关辅助接点是否闭合好。

C.检查盖板启、停按钮及其连接线。

D.检查启动二极管是否击穿或断路 。

E.检查进线电缆是否断线。

F.检查各电机的温度保护线接点是否闭合。

2.采煤机起车即停，顺槽开关显示故障：缺相A.首先要检查拖动电缆是否有断线（尤其是采煤机旋转砖头15米范围内），因为折弯的频率比较高，很容易造成电缆断线。

B.检查采煤机的隔离开关是否有一相未闭合。

C.检查顺槽开关（接触器、隔离开关）3.按采煤机总启按钮时，移动变电站跳闸A.将隔离开关断开，再隔离开关绝缘正常的情况下，按总起，如果继续跳闸，可确定不是采煤机的接地故障造成。

B.用5000V绝缘摇表，主进线 单相对地，检查 主回路和牵引变压器、油泵电机、控制变压器是否绝缘正常。

4.启动后不能自保A.检查控制PLC相应输出指示灯（主100CH01)是否亮。

B.检查自保继电器吸合是否正常。

C.检查端头站是否误发“总停”信号。

D.检查盖板总停按钮及其线路是否误动作。

E.检查瓦斯是否超限。

F.检查控制变压器高、低压保险是否熔断。

5.开机后摇臂自动上升或下降A.检查电磁阀阀芯是否堵卡，以致不能回到中位B.检查制动阀阀芯是否堵卡，以致不能回到中位。

C.检查电磁阀及其线路。

D.检查控制PLC输出继电器是否正常工作。

E.检查控制PLC输入部分是否有接点粘连等现象造成误动作。

6.摇臂上升或下降不动作A.检查按钮、遥控器等控制PLC输入信号是否 正常，可以通过控制PLC输入指示灯来判断。

B.检查电磁阀线圈是否短路、开路等，可以用正 常的一路来“替换”查找。

C.检查电磁阀工作电源是否正常。

D.检查控制计算机输出是否正常。

E.检查液压系统压力，管路等是否正常。

7.端头站、遥控器不动作A.检查端头站12V电源是否正常，遥控器电池电压是否正常。

B.检查端头站电缆的连接头是否紧凑、牢固、可靠。

使用说明书OPERATION MANUALCH2700系列电源综合测试仪Power Supply Parameter TesterVer1.0常州市贝奇电子科技有限公司BEICH ELECTRONIC TECHNOLOGY CO.,LTD.注意事项：本说明书版权归常州市贝奇电子科技有限公司所有，贝奇电子保留所有权利。

未经贝奇电子书面同意，不得对本说明书的任何部分进行影印、复制或转译。

本说明书适用于CH2700系列电源综合测试仪本说明书包含的信息可能随时修改，恕不另行通知。

最新的说明书电子文档可以从贝奇电子官方网站下载：2017年3月……………………………………..第一版公司声明本说明书所描述的可能并非仪器所有内容，贝奇电子有权对本产品的性能、功能、内部结构、外观、附件、包装物等进行改进和提高而不作另行说明！由此引起的说明书与仪器不一致的困惑，可与我公司联系。

安全警告:在使用操作和维护本仪器的任何过程中，务必遵守各项安全防护措施。

如果忽视和不遵守这些安全措施及本手册中的警告，不但会影响仪器性能，更可能导致仪器的直接损坏，并可能危及人身安全。

对于不遵守这些安全防范措施而造成的后果，贝奇电子科技有限公司不承担任何后果。

触电危险操作测试与维护仪器时谨防触电，非专业人员请勿擅自打开机箱，专业人员如需更换保险丝或进行其它维护，务必先拔去电源插头，并在有人员陪同情况下进行。

即使已拔去电源插头，电容上电荷仍可能会有危险电压，应稍过几分钟待放电后再行操作。

请勿擅自对仪器内部电路及元件进行更换和调整！输入电源请按本仪器规定的电源参数要求使用电源，不符合规格的电源输入可能损坏本仪器。

更换保险丝请使用相同规格远离爆炸性气体环境电子仪器不可以在易燃易爆气体环境中使用，或者在含有腐蚀性气体或烟尘环境中使用，避免带来危险。

其它安全事项请不要向本仪器的测试端子以及其它输入输出端子随意施加外部电压源或电流源。

输入端切勿输入交流电压。

D 2DDoor Interlock Power Switch with Minimum Contact gap of 3 mm●Offers the minimum contact gap of 3 mm required for power switches as standard equipment. ●Safety considerations include a double return spring and direct drive positive contact opening feature. ●Pull-on lock model for easy maintenance is also available. RoHS CompliantModel Number LegendList of Models*Refer to next page for the pull-on lock function.Contact FormContact Specifications*Please refer to "●Using Micro Loads " in "■Precautions " for more informa-tion on the minimum applicable load.RatingsNote.The above rating values apply under the following test conditions.(1) Ambient temperature: 20±2°C (2) Ambient humidity: 65±5%(3) Operating frequency: 30 operations/minMountingTypeContact gap Contact formStandard Pull-on lock *3 mm min. 1 mmScrew mountingSPST -NO+SPST -NCD2D-1000D2D-2000SPST -NO D2D-1001-SPST -NCD2D-1002-Panel mountingSPST -NO+SPST -NCD2D-1100D2D-2100SPST -NOD2D-1101-SPST -NC D2D-1102-DPST -NO+SPST -NCD2D-3103-DPST -NOD2D-3104-D2D-@@0@ 1. Con s truction1: S ingle pole, cont a ct g a p 3 mm 2: P u ll-on lock, cont a ct g a p 1 mm 3: Do ub le pole, cont a ct g a p 3 mm 2. Mountin g0: S crew mo u nting 1: P a nel mo u nting 3. Contact0: S P S T-NO+S P S T-NC 1: S P S T-NO 2: S P S T-NC3: DP S T-NO+S P S T-NC 4: DP S T-NO123ItemTypeStandardPull-on lockContactSpecification Rivet Material SilverGap (standard value) 3 mm min. 1 mm Inrush current NC 30 A max. 24 A max. NO30 A max.24 A max.Minimum applicable load (reference value) *5 VDC 160mATypeItemRated voltage Resistive loadStandard 250 VAC 16 A Pull-on lock model250 VAC10 A●SPST-NO+SPST-NC D2D-1000D2D-2000 D2D-1100D2D-2100●DPST-NO+SPST-NC D2D-3103●SPST -NOD2D-1001 D2D-1101●DPST -NOD2D-3104●SPST-NCD2D-1002 D2D-1102Terminal Connection Parts (Sold Separately) Refer to "Basic Switch Common Accessories"D2DPower/Door SwitchD 2DCharacteristicsNote.The data given above are initial values.*For testing conditions, consult your OMRON sales representative.Pull-on lock function (D2D-2000 models)When opening or closing the door, the power ON state of the Switch can be checked with the door left open when applying normal (momentary) operations. By closing the door after maintenance inspection, the Switch will resume the normal momentary operation. (This feature is ideal for conducting the electrical continuity test, inspection, repair, etc. on the Switch after its assembly.)Double Spring Mechanism (D2D-1000/3000 models)T wo return springs are provided for the pin plunger. Thus, ifeither of the springs is broken, this feature will prevent the Switch from malfunctioning or short-circuiting.Direct Contact Opening Mechanism (D2D-1000 models)Pushing the plunger will effectively break the circuit on the NC side even if a contact weld occurs in the Switch. Direct Contact Opening Mechanism is not available in NO connection.Approved Safety StandardUL (UL1054) /CSA (CSA C22.2 No.55)VDE (EN61058-1)Test conditions: 1E4 (10,000 operations)T85 (0°C to 85°C) Note. The values in parentheses are the motor load ratings.Mounting Holes (Unit: mm)ItemModelD2D-1000 modelsD2D-2000 models D2D-3000 modelsPermissible operating speed 10 mm to 1 m/s Permissible operatingfrequency Mechanical 300 operations/min Electrical 60 operations/minInsulation resistance100 M Ω min. (at 500 VDC with insulation tester)Contact resistance (initial value)50 m Ω max.Dielectric strengthBetween terminals of the same polarity2,000 VAC 50/60 Hz 1min 1,000 VAC 50/60 Hz 1min 2,000 VAC 50/60 Hz 1min Between current-carrying metal parts and ground2,000 VAC 50/60 Hz 1min 1,500 VAC 50/60 Hz 1min 2,000 VAC 50/60 Hz 1minBetween each terminal andnon-current-carrying metal parts 2,500 VAC 50/60 Hz 1min 1,500 VAC 50/60 Hz 1min-Between terminals and actuator4,000 VAC 50/60 Hz 1min-4,000 VAC 50/60 Hz 1minVibration resistance Malfunction10 to 55 Hz, 1.5 mm double amplitudeShock resistance Durability 1,000 m/s 2 {approx. 100G} max. Malfunction 500 m/s 2 {approx. 50G} max. 300 m/s 2 {approx. 30G} max. 500 m/s 2 {approx. 50G} max.Durability *Mechanical 10,000,000 operations min. (60 operations/min) Electrical100,000 operations min. (30 operations/min)Degree of protectionIEC IP40Degree of protection against electric shock Class II Proof tracking index (PTI) 175Ambient operating temperature -25 °C to +85 °C (at ambient humidity 60 % max.) (with no icing or condensation)Ambient operating humidity 85% max. (for +5°C to +35°C) WeightApprox. 14 g (for D2D-1000)ExampleStateContactNO-NONC-NCTo turn ON the power when the door is closedON OFFTo turn OFF the power when the door is openOFF ONTo turn ON the power with the door left openON OFFP u llRated voltageModelD2D-1000 D2D-2000 D2D-3000 125 VAC 250 VAC-16A-10A3/4HP 16A 1-1/2HPRated voltageModelD2D-1000 D2D-2000 D2D-3000 250 VAC16 (4) A10A16 (4) AScrew Mounting Hole DimensionsPanel Cutout Dimensions(Panel thickness: 1.0 to 2.5 mm)2-4.3 di a . mo u nting hole s * For p a nel of thickne ss 1.0 i s 36.7±0.1 For p a nel of thickne ss 2.5 i s 37.0±0.113a nelD2DPower/Door SwitchD 2DNote 1.Unless otherwise specified, a tolerance of ±0.4 mm applies to all dimensions.2.The operating characteristics are for operation in the A direction ().0558R Ndi a .●Screw Mounting D2D-1000 D2D-1001 D2D-1002Operating characteristics ModelD2D -1000D2D -1001D2D -1002Operating ForceOF Max.(NC-OFF)(NO-ON)Total Travel Force TTF Max. 2.94 N {300 gf}5.88 N {600 gf}7.35 N {750 gf}-5.88 N {600 gf}7.35 N {750 gf} 2.94 N {300 gf}-7.35 N {750 gf}Overtravel OT Min.2.3 mm 2.3 mm 5.5 mm Free Position FP Max.Operating PositionOP (NC-OFF)(NO-ON)Total Travel Position TTP Max.16.4 mm 15.9±0.4 mm 12.7±0.4 mm 10 mm17 mm -12.7±0.4 mm 10 mm16.4 mm 15.9±0.4 mm -10 mm.Operating characteristics ModelD2D-1100 D2D -1101 D2D -1102 Operating ForceOF Max.(NC-OFF)(NO-ON)Total Travel Force TTF Max.2.94 N {300 gf}5.88 N {600 gf}7.35 N {750 gf}-5.88 N {600 gf}7.35 N {750 gf} 2.94 N {300 gf}-7.35 N {750 gf}Overtravel OT Min. 2.3 mm 2.3 mm 5.5 mm Free Position FP Max.Operating PositionOP (NC-OFF)(NO-ON)Total Travel Position TTP Max.12.4 mm 11.9±0.4 mm 8.7±0.4 mm 6 mm13 mm -8.7±0.4 mm 6 mm12.4 mm 11.9±0.4 mm -6 mmD2DPower/Door SwitchD 2DNote 1.Unless otherwise specified, a tolerance of ±0.4 mm applies to all dimensions.2.The operating characteristics are for operation in the A direction ().Precautions★Please refer to "Basic Switches Common Precautions" for correct use.●Mounting•Apply operation force to the pin plunger in the direction itoperates. Applying forces laterally or from an oblique direction may damage the pin plunger.•Use M4 mounting screw with plane washers or spring washers to securely mount the Switch. Tighten the screws to a torque of 0.49 to 0.69 N·m {5 to 7 kg·cm}.●Wiring•It is recommended to use sleeve receptacles when connecting with the quick connect terminals.•Insert the receptacle straight toward the terminal.•Applying excessive external force horizontally or vertically may cause deformation of terminals and may damage the housings.●Using Micro LoadsUsing a model for ordinary loads to open or close the contact of a micro load circuit may result in faulty contact. It isrecommended to use the Switch in the operation range shown below. The minimum applicable load is the N-level reference value. This value indicates the malfunction reference level for the reliability level of 60% (λ60). (JIS C5003)The equation, λ60=0.5×10-6/operations, indicates that theestimated malfunction rate is less than operationswith a reliability level of 60%.Correct Use12,000,000V o l t a g e (V )3C u rrent (mA)D2D Power/Door SwitchD2D•Applic a tion ex a mple s provided in thi s doc u ment a re for reference only. In a ct ua l a pplic a tion s, confirm e qu ipment f u nction s a nd sa fety b efore us ing the prod u ct.• Con su lt yo u r OMRON repre s ent a tive b efore us ing the prod u ct u nder condition s which a re not de s cri b ed in the m a n ua l or a pplying the prod u ct to n u cle a r control s y s tem s, r a ilro a d s y s tem s, a vi a tion s y s tem s, vehicle s, com bus tion s y s tem s, medic a l e qu ipment, a m us ement m a chine s, sa fety e qu ipment, a nd other s y s tem s or e qu ipment th a t m a y h a ve a s erio us infl u ence on live s a nd property if us ed improperly. M a ke su re th a t the r a ting s a nd perform a nce ch a r a cteri s tic s of the prod u ct provide a m a rgin of sa fety for the s y s tem ore qu ipment, a nd b e su re to provide the s y s tem or e qu ipment with do ub le sa fety mech a ni s m s.Note: Do not u s e thi s document to operate the Unit. OMRON CorporationELECTRONIC AND MECHANICAL COMPONENT S COMPANY Contact: /ecb Cat. No. B085-E1-070812(0207)(O)。