详细介绍
飞利浦CON021 PR6423/002-000 9200-00006N
飞利浦CON021 PR6423/002-000 9200-00006N
现货库存;大量全新库存,款到48小时发货,无须漫长货期。
优质售后;严格按照产品质保及售后服务条款,客户使用无忧。
价格优;作为系统集成商,拥有优惠折扣价格,
*,质量保证,保修一年,提供技术服务,价格合理
空调系统工作时,首先要检测电压系统的电压,判断是否在正常工作范围之内,正常启动后变频器内部PLC检测的DCBUS(直流母线)值,然后根据设定好的V/F曲线计算所要输出的频率,控制根据空调控制器设定的温度值转化后送到控制PLC,PLC再将其转换为0~10V的模拟量信号送到变频器的AVI,即变频器的频率命令来源,变频器比较两种频率命令值的大小,然后根据较小的频率指令进行输出。变频制冷PLC控制流程如图5所示。
图5 变频制冷PLC控制流程
4 结束语
台达E 系列变频器内部PLC容量可到500steps,因此对于小系统的顺序控制或简单的检测,能*要求,所以就省去了外挂PLC的成本,同时,由于PLC是内嵌在变频器里面,就没有兼容性和通讯等问题的存在,因此使用起来非常方便。
Kennametal 3.37060R720
Robar 5636 1740-1860
Cmc Cleveland MT4225-105CE
Hi-speed P2-80-101
Leviton 8681-400
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United Conveyor 15250
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Asco HE8320A89
Cutting Drill Bit 9/16in
Nsk 7021CTRDUMP3
Jun Hong MB057DT183-005
Bio-chem 075P2-S49
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337473 ER20
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Moore 123388-812
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