产品名称：Reliance Electric 615055-2R DCS 系统模块
产品型号：Reliance Electric 615055-2R
产品参数：Reliance Electric 615055-2R
产品功能：Reliance Electric 615055-2R
联系人：刘锦玲 销售经理
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微 信：15359273791
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1) plc晶体管输出呼应快，能够用于高速输出，可是操控电磁阀等仍是需求加中心继电器；继电器输出呼应慢，可是能够省去外接继电器，接线简略。详细选用什么输出要视负载状况而定。2) 晶体管首要用于定位操控，要用晶体的输出来宣布脉冲。而继电器是不能用宣布脉冲的，也就不能定位操控了。如果用继电器去操控定位伺服或是步进的话就还要加定位模块，经济上不划算。而用一个晶体管输出的就能够操控伺服等。就这么回事。根据
1) plc晶体管输出呼应快，能够用于高速输出，可是操控电磁阀等仍是需求加中心继电器；继电器输出呼应慢，可是能够省去外接继电器，接线简略。详细选用什么输出要视负载状况而定。
2) 晶体管首要用于定位操控，要用晶体的输出来宣布脉冲。而继电器是不能用宣布脉冲的，也就不能定位操控了。如果用继电器去操控定位伺服或是步进的话就还要加定位模块，经济上不划算。而用一个晶体管输出的就能够操控伺服等。就这么回事。根据生产工艺要求，各种指示灯、变频器/数字直流调速器的启动中止应选用晶体管输出，它适应于高频动作，而且呼应时刻短;如果PLC系统输出频率为每分钟6次以下，应首选继电器输出，选用这种方法，输出电路的规划简略，抗干扰和带负载才能强。
细分：
1) 负载电压、电流类型不同
负载类型：晶体管只能带直流负载，而继电器带交、直流负载均可。电流：晶体管电流0.1A-0.5A，继电器3A。电压：晶体管可接直流24V一般最大在直流30V左右，继电器能够接直流24V或沟通220V。
2) 负载才能不同
晶体管带负载的才能小于继电器带负载的才能，用晶体管时，有 时分要加其他东西来带动大负载（如继电器，固态继电器等）。
3) 晶体管过载才能小于继电器
过载的才能一般来说，存在冲击电流较大的状况时（例如灯泡、感性负载等），晶体管过载才能较小，需求降额更多。
4) 晶体管呼应速度快于继电器
继电器输出型原理是CPU驱动继电器线圈，令触点吸合，使外部电源经过闭合的触点驱动外部负载，其开路漏电流为零，呼应时刻慢（约10ms）。 晶体管输出型原理是CPU经过光耦合使晶体管通断，以操控外部直流负载，呼应时刻快（约0.2ms乃至更小）。晶体管输出一般用于高速输出，如伺服／步进等，用于动作频率高的输出。
5) 在额外作业状况下，继电器有动作次数寿数，晶体管只要老化没有运用次数
约束继电器是机械元件所以有动作寿数，晶体管是电子元件，只要老化，没有运用次数约束。继电器的每分钟开关次数也是有约束的，而晶体管则没有。
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