ELECTRONIC TEST NODES FOR AUTOMATIC CHECK OF A SAFETY CHAIN

An electronic test node (1) for a safety chain (22) in a passenger conveyor system comprises an electrical connection (2) for an associated safety switch (4). A processor (6) is configured to monitor a signal carried by the electrical connection (2) so as to detect whether the associated safety switch (4) is open or closed. The electronic test node (1) further comprises a test switch (8) connected in series with the electrical connection (2), wherein the processor (6) is configured to run a test by selectively opening the test switch (8) and monitoring for a change in the signal carried by the electrical connection (2). 一种用于乘客运输设备系统中的安全链（22）的电子测试节点（1）包括用于相关联的安全开关（4）的电连接（2）。处理器（6）被配置成监测所述电连接（2）携带的信号以便检测所述相关联的安全开关（4）是断开还是闭合。所述电子测试节点（1）进一步包括与所述电连接（2）串联连接的测试开关（8），其中所述处理器（6）被配置成通过选择性地断开所述测试开关（8）并监测所述电连接（2）携带的信号中的变化来运行测试。