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    • 2. 发明申请
    • ELEVATOR HAVING A SAFETY CHAIN WITH A SERIES CONNECTION OF SAFETY SWITCH ARRANGEMENTS
    • 具有安全开关安排系列连接的安全链的电梯
    • WO2014166828A1
    • 2014-10-16
    • PCT/EP2014/056790
    • 2014-04-04
    • KONE CORPORATION
    • MERTALA, AnttiKATTAINEN, AriDONGHI, ClaudioKINNARI, JoukoSALMELIN, Samu
    • B66B13/22
    • B66B7/1223B66B5/0025B66B5/0031B66B5/02B66B13/22
    • The invention relates to an elevator having a safety controller (10) to which several safety switch arrangements (20-28) are connected, which safety controller is configured to cause the stop of the elevator motor (14) and the activation of the motor brakes (16), in the safety controller (10) a comparator (32) is provided for the determination of the status of the safety chain, which comparator is connected with a memory (34) for storing at least one resistor reference value, which comparator is configured to output a safety chain status signal in dependence of comparison of a measured resistance value with the resistor reference value. Each of said safety switch arrangements comprises at least one first resistor (38) and a safety switch (36) which are connected in series, the value of the first resistor (38) is different in at least some safety switch arrangements (20-28), preferably in all safety switch arrangements, and each safety switch arrangement (20-28) comprises at least a second resistor (40) connected in parallel with the safety switch (36), which second resistor has a higher value than the first resistor (38). The invention allows the detection of a short circuit as well as of the opening of a safety switch arrangement.
    • 本发明涉及一种具有安全控制器(10)的升降机,多个安全开关装置(20-28)连接到该安全控制器上,该安全控制器构造成使电梯马达(14)的停止和马达制动器的启动 (16)中,在安全控制器(10)中,提供比较器(32)用于确定安全链的状态,该比较器与用于存储至少一个电阻器参考值的存储器(34)连接,该比较器 被配置为根据测量的电阻值与电阻器参考值的比较来输出安全链状态信号。 每个所述安全开关装置包括至少一个串联连接的第一电阻器(38)和安全开关(36),所述第一电阻器(38)的值在至少一些安全开关装置(20-28 ),优选地在所有安全开关装置中,并且每个安全开关装置(20-28)至少包括与安全开关(36)并联连接的第二电阻器(40),该第二电阻器的值比第一电阻器 (38)。 本发明允许检测短路以及开启安全开关装置。