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22D-D010F104
22D-D010F104
22D-D010F104
1、电磁抱闸:电磁抱闸制动方法在起重机械上广泛应用,如行车、卷扬机、电动葫芦等。其优点是能准确定位,可防止电动机突然断电时重物自行坠落而造成事故。缺点是电磁抱闸体积较大,制动器磨损严重,快速制动时会产生振动。
2、短接制动:制动时将电机的绕组短接,利用绕组自身的电阻消耗能量。由于绕组的电阻较小,耗能很快,有的危险性,可能烧毁电机。
3、反接制动:反接制动是指将电机的电源正负极反接,改变电枢电流的方向,这样转矩的方向也改变,使得转速与转矩的方向相反。交流电机制动采用改变相序的方法产生反向转矩,原理类似。反接制动制动力强,制动迅速,控制电路简单,设备投资少,但制动准确性差,制动过程中冲击力强烈,易损坏传动部件。
ALLEN BRADLEY SLC 150 PROCESSOR 1745-LP151
ALLEN BRADLEY 1745-LP103 NSPP 1745LP103
ALLEN BRADLEY 1745-E155 NSPP 1745E155
ALLEN BRADLEY 1745-LP154 NSPP 1745LP154
ALLEN BRADLEY 1745-E105 NSPP 1745E105
ALLEN BRADLEY 1745-LP153 NSPP 1745LP153
ALLEN BRADLEY 1745-E101 NSPP 1745E101
ALLEN BRADLEY 1745-E151 SER.A SLC 150 EXPANION
2 NICE ALLEN BRADLEY SLC 100 PROCESSOR UNITS 1745-LP103
AB SLC150 1745-LP151 Ser C FRN6 Allen Bradley Prog. Con
ALLEN BRADLEY 1745-E153 NSFP 1745E153
NS** ALLEN-BRADLEY 1745-E156 SLC 150 EXPANSION UNIT
ALLEN BRADLEY 1745-LP101 SLC 100 PROCESSOR UNIT
1745-E105 SERIES B ---- 1 YEAR WARRANTY
Allen Bradley 1745-LP102 Ser A Programmable Control
1745-E101 SERIES A - NIB - 1 YEAR WARRANTY
ALLEN BRADLEY 1745-LP101 SER D SLC 100 PLC
Allen Bradley SLC 100 I/O Expansion Unit 1745-E101
Unused Allen Bradley Memory Module 1745-M1
ALLEN BRADLEY 1745-LP101 D SLC-100 PLC
ALLEN BRADLEY 1745-LP101 SLC 100 PLC UNIT
Allen Bradley 1745-E101
Allen-Bradley SLC 100 PLC cat 1745-E101
ALLEN BRADLEY SLC 150 EXPANSION UNIT 1745-E151
1745-LP101 Allen Bradley NIB 1745LP101 New
ALLEN BRADLEY 1745-E101 PROGRAMMABLE CONTROLLER
ALLEN BRADLEY 1745-E107 -NEW- 1745E107
ALLEN BRADLEY SLC100 BASIC EXPANSION UNIT #1745-E101