德国REXROTH力士乐继电器现货库存 继电器是一种电控制器件,是当输入量(激励量)的变化达到规定要求时,在电气输出电路中使被控量发生预定的阶跃变化的一种电器。它具有控制系统(又称输入回路)和被控制系统(又称输出回路)之间的互动关系。通常应用于自动化的控制电路中,它实际上是用小电流去控制大电流运作的一种“自动开关”。故在电路中起着自动调节、安全保护、转换电路等作用。 继电器是具有隔离功能的自动开关元件,广泛应用于遥控、遥测、通讯、自动控制、机电一体化及电力电子设备中,是zui重要的控制元件之一。 R901108245 HED 8 OA-2X/200K14KWV R901171100 HED 8 OA-2X/200K35S R901211753 HED 8 OA-2X/200K35A R901293054 HED 8 OA-2X/200K35KS R901102710 HED 8 OA-2X/350K14 R901107796 HED 8 OA-2X/350K14V R901102778 HED 8 OA-2X/350K14S R901107922 HED 8 OA-2X/350K14SV R901106455 HED 8 OA-2X/350K14A R901110452 HED 8 OA-2X/350K14AV R901102722 HED 8 OA-2X/350K14AS R901108517 HED 8 OA-2X/350K14ASV R901107087 HED 8 OA-2X/350K14KS R901134010 HED 8 OA-2X/350K14KSV R901102716 HED 8 OA-2X/350K14KW R901110450 HED 8 OA-2X/350K14KWV R901125561 HED 8 OA-2X/350K35 R901127474 HED 8 OA-2X/350K35S R901127471 HED 8 OA-2X/350K35A R901127477 HED 8 OA-2X/350K35AS R901272251 HED 8 OA-2X/350K35KS R901107127 HED 8 OA-2X/630K14 R901118228 HED 8 OA-2X/630K14V R901107915 HED 8 OA-2X/630K14S R901130967 HED 8 OA-2X/630K14SV R901275335 HED 8 OA-2X/630K14A R901108512 HED 8 OA-2X/630K14AS R901199523 HED 8 OA-2X/630K14ASV R901109541 HED 8 OA-2X/630K14KS R901109538 HED 8 OA-2X/630K14KW R901188553 HED 8 OA-2X/630K35A 继电器一般都有能反映一定输入变量(如电流、电压、功率、阻抗、频率、温度、压力、速度、光等)的感应机构(输入部分);有能对被控电路实现“通”、“断”控制的执行机构(输出部分);在继电器的输入部分和输出部分之间,还有对输入量进行耦合隔离,功能处理和对输出部分进行驱动的中间机构(驱动部分)。 压力继电器是利用液体的压力来启闭电气触点的液压电气转换元件。当系统压力达到压力继电器的调定值时,发出电信号,使电气元件(如电磁铁、电机、时间继电器、电磁离合器等)动作,使油路卸压、换向,执行元件实现顺序动作,或关闭电动机使系统停止工作,起安全保护作用等。 压力继电器有柱塞式、膜片式、弹簧管式和波纹管式四种结构形式。 用于安全保护时,将压力继电器设置在夹紧液压缸的一端,液压泵启动后,首先将工件夹紧,此时夹紧液压缸的右腔压力升高,当升高到压力继电器的调定值时,压力继电器动作,发出电信号使2YA通电,于是切削液压缸进刀切削。在加工期间,压力继电器微动开关的常开触点始终闭合。若工件没有夹紧,压力继电器2断开,于是2YA断电,切削液压缸立即停止进刀,从而避免工件未夹紧被切削而出事故。 其次用于控制执行元件的顺序动作时,液压泵启动后,首先2YA通电,液压缸左腔进油,推动活塞方向右移。当碰到限位器(或死挡铁)后,系统压力升高,压力继电器发出电信号,使1YA通电,高压油进入液压缸的左腔,推动活塞右移。这时若3YA也通电,液压缸的活塞快速右移;若3YA断电,则液压缸的活塞慢速右移,其慢速运动速度由节流阀调节。 再次用于液压泵卸荷时,压力继电器不是控制液压泵停止转动,而是控制二位二通电磁阀,将液压泵5输出的压力油流回油箱,使其卸荷。 zui后用于液压泵的启闭时,有两个液压泵,高压小流量泵,低压大流量泵。当活塞快速下降时,两泵同时输出压力油。当液压缸活塞杆抵住工件开始加压时,压力继电器在压力油作用下发出动作,触动微动开关,将常闭触点断开,使液压泵停转。在加工过程中减慢液压缸的速度,同时减少动力消耗。 注意: 压力继电器必须放在压力有明显变化的地方才能输出电信号。若将压力继电器放在回油路上,由于回油路直接接回油箱,压力也没有变化,所以压力继电器也不会工作。 德国REXROTH力士乐继电器现货库存 上海维特锐实业发展有限公司 :龚 颐 :3084384743 电 话: 手 机: 邮 箱:victory-g 地址:上海市普陀区中江路889号曹杨商务大厦 1501-1502 R901182344 HED 5 OH-3X/50K14 R901186325 HED 5 OH-3X/50K14V R901225114 HED 5 OH-3X/50K35 R901185727 HED 5 OH-3X/100K14 R901227565 HED 5 OH-3X/100K14V R901186322 HED 5 OH-3X/200K14 R901186327 HED 5 OH-3X/200K14V R901249440 HED 5 OH-3X/200K35 R901186323 HED 5 OH-3X/350K14 R901227564 HED 5 OH-3X/350K14V R901182348 HED 5 OH-3X/350K35 R901239242 HED 5 OH-3X/350K35V R901102349 HED 8 OH-2X/50K14 R901099796 HED 8 OH-2X/50K14V R901102712 HED 8 OH-2X/50K14S R901215098 HED 8 OH-2X/50K14SV R901108007 HED 8 OH-2X/50K14A R901099798 HED 8 OH-2X/50K14AV R901107086 HED 8 OH-2X/50K14AS R901109050 HED 8 OH-2X/50K14ASV R901102356 HED 8 OH-2X/50K14KS R901099800 HED 8 OH-2X/50K14KSV 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