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MOLL-MOTOR 电机 Y3HE2-90L4B3新闻资讯
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本公司今日报道:MOLL-MOTOR 电机 Y3HE2-90L4B3新闻资讯本公司中海德(福建)工业设备有限公司专业销售大型进口各种品牌DCS系统模块备件:主营产品:DCS集散式控制系统、PLC可编程控制。
主要业务: ABB DCS卡件Ovation系统模块Foxboro系统卡件Triconex系统模块
Rexroth力士乐全系列产品Modicon停产模块 等各类工控产品施耐德140系列CPU,PLC
西门子6DD,6FX,6SC,6FC,6S5系列AB1746,1756,1747,1785系列PLC
GE 通用电气 发那科
订购专员:陈小真
订购热线:18005006971/ 0591-
在线咨询qq:
传真:0591-83489960
地址:福建省福州市区乌龙江大道正荣财富中心B座八层
如何正确选择西门子电机用变频器?
1、380-480VAC供电、且不含滤波器的产品,属于西门子440系列变频器常用品。只要针对440系列找到对应的型号就好了。
2、部分功率对用的产品油原装进口和国内生产两种,国内生产的价格相对于纯进口的产品要便宜。
3、变频器型号对应的功率,指是的是很转矩输出功率。
4、一般选购标配的西门子变频器,是不含控制面板的。控制面板需要单独订购。控制面板包括中文的和英文的。英文控制面板比中文的要便宜一点。
选购变频器一般要考虑以下参数:
1、功率
多大功率电机就选多大功率的变频器。但对于特殊场合,如高温、高海拔,此时会引起变频器的降容,变频器容易要放大一档。
2、电流
变频器的额定电流比电机运营的电流大即可,一般铭牌上都有标识。
3、供电电压
4、负载惯性
有些场合例如大部分通风管道,对电机及时停下并无要求,有的传输带则要求及时停下来,因此也可以作为选购变频器的参考条件。
一台西门子变频器,是可以控制多台电机的。这种应用情况,我们通常称为“一拖多”。运行多年也很少出故障。不过变频器一拖多要注意以下几点:
1、控制方式一定要用线性的V/F控制
2、一拖多仅运用于对电机转速调节无严格要求的场合;
3、各个电机额定电流的总和要小于变频的额定电流;
4、各个电机上要加装独立的热继电器。
5、各电机功率尽量一致
6、各输出回路物理特性差异尽量小,包括:
A、电机特性,如转速;
B、电缆特性,如截面积,长度,材料。
7、如果电机特性基本一致,电缆长度接近变频器允许的极限长度时可采取增加出线电抗器、降低开关频率、适当加大变频器等方法。
对于中端应用,客户在选择变频器时,通常都会考虑西门子或者ABB。的确,在高端的某些特殊行业,比如起重、轧钢等,个人觉得使用西门子等国外品牌的变频器,也会多一点保障,少出一点故障的。后期使用上还是省心不少的哦。
BENTLY NEVADA 2789-156 (Used, Cleaned, Tested 2 year warranty)
14 day WARRANTY Bently Nevada 3300/48-01-01-01-00 Case Expansion Monitor
Bently Nevada 3300/48-01-01-01-00 Case Expansion Monitor
BENTLEY NEVADA 20929-04 PROXIMITOR SIGNAL CONDITIONING UNIT MODULE + PROBE SENSO
Bently Nevada 126615-01 PROXIMITOR I/O MODULE - Used
BENTLY NEVADA 330180-90-00
BENTLY NEVADA 86691-04265-0435-15 (Used, Cleaned, Tested 2 year warranty)
Bently Nevada 3500/50 350050 3500-50 Tachometer Module
BENTLY NEVADA 330171-00-10-05-02-00 1/4-28 5MM PROXIMITY TRANSDUCER Box39B
Bently Nevada Vibration Monitor 7200 VIB Series 72471
Bently Nevada Vibration Monitor 7200 VIB Series 72471
BENTLY NEVADA CABLE PART#: 2789-168
BENTLY NEVADA CABLE PART#: 2789-168
BENTLY NEVADA 3500/33 16 CHANNEL RELAY MODULE
Bently Nevada PC Board Terminal for Distribution Module 78432-02 J 110VAC
Bently Nevada PC Board Terminal for Distribution Module 78432-02 J 110VAC
Bently Nevada 127610-01 Power Supply Module 3500/15 System PLC 12761001 PS
Bently Nevada 127610-01 Power Supply Module 3500/15 System PLC 12761001 PS
Bently Nevada 9000 Series Display 90120-02-xx 15617-01
Bently Nevada 9000 Series Display 90120-02-xx 15617-01
Bently Nevada 88199-01 88286-01H Temperature Control PLC PWA88199-01 8828601H
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Bently Nevada 3300 System Monitor 3300/01
Bently Nevada 3300 System Monitor 3300/01
Bently Nevada Terminal 88286-02e OVP
BENTLY NEVADA 3500/04 EARTHING MODULE
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Bently Nevada 149986-01 3500/33 16 Channel Relay Module - Used
Bently Nevada 149986-01 3500/33 16 Channel Relay Module - Used
Bently Nevada 4-Channel Relay Module: 3500/32-01-00
Bently Nevada 133396-01 OVERSPEED DETECTION I/O MODULE - New No Box
Bently Nevada 133396-01 OVERSPEED DETECTION I/O MODULE - New No Box
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Bently Nevada XDCR I/O & Record Terminals 81546-01 8154601 79748-01H 79748 01 H
BENTLY NEVADA SHIELDED CABLE 4454-156
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Bently Nevada 3500 AC Power Distribution Module 125840 -02
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Bently Nevada 89998-01 System Monitor - New No Box
Bently Nevada 7200 Power Supply 72050-01-01
Bently Nevada 7200 Power Supply 72050-01-01
Bently Nevada 3500/42M Proximitor / Seismic Monitor 176449-02 V PLC Bentley 42 M
Bently Nevada 3500/42M Proximitor / Seismic Monitor 176449-02 V PLC Bentley 42 M
BENTLY NEVADA VGA DISPLAY I/O MODULE 147663-01 (L1-2)
BENTLY NEVADA VGA DISPLAY I/O MODULE 147663-01 (L1-2)
BENTLY NEVADA Bentley 133323-01
Bently Nevada 7200 Power Supply 72250-04-01
Bently Nevada 7200 Power Supply 72250-04-01
Bently Nevada Accelerometer Sensor Card 170180-01-00 17018001 NEW
Bently Nevada 330750-80 Transducer Velocity Control Velomitor Probe Bentley
Bently Nevada 330750-80 Transducer Velocity Control Velomitor Probe Bentley
Bently Nevada 24653-1-2-30-90-2 Vibration Sensor Probe no box
BENTLY NEVADA 125720-01 3500/32 4 CHANNEL RELAY MODULE
BENTLY NEVADA 330901-00-24-05-02-00 3300XL NSV PROXIMITY PROBE D552798
Bently Nevada 288055-01 3500/22M Transient Data Interface - New No Box
Bently Nevada 288055-01 3500/22M Transient Data Interface - New No Box
Bently Nevada Dual trust position monitor 3300/20 -12-01-00-01-01 OVP
Bently Nevada Dual Accelerometer Monitor 3300/26-01-11-11-00-01-02-00 RMS PLC
Bently Nevada 3500/42m Proximitor/Seismic Monitor Nov
Bently Nevada 7000 Velomitor XDucer I/O & Record Terminal 107321-01
Bently Nevada 7000 Velomitor XDucer I/O & Record Terminal 107321-01
Bently Nevada PWA85125-01 Circuit Board PWB85127-01 - Used
Bently Nevada 3300/40-xx-01-02-00-00 Eccentricity Monitor Module Board
Bently Nevada 125792-01 3500/25 Enhanced Keyphasor Module - Used
Bently Nevada 125792-01 3500/25 Enhanced Keyphasor Module - Used
Bently Nevada 149992-01 OUTPUT MODULE 16CHANNEL RELAY SPARE - Used
Bently Nevada 149992-01 OUTPUT MODULE 16CHANNEL RELAY SPARE - Used
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Bently Nevada 143729-01 CYLINDER PRESSURE I/O MODULE - Used
Bently Nevada 135813-01 DISPLAY MODULE FOR
联系方式:
电话:0591-83566917 手机:18005006971 联系人:陈小真 Q Q:2851617312
热门标签:MOLL-MOTOR 电机 Y3HE2-90L4B3新闻资讯