| 摘要 |
A monitoring system (1) for people-transporting systems (2), which are in the form of an elevator, escalator or moving walkway, comprises at least one query device (5) and at least one safety switch (7) which is connected to said query device (5) via an electrical safety circuit (13) and is used for monitoring a device (15) of the people-transporting device (2). A current direction-dependent unit (8) is arranged in said electrical safety circuit (13). Furthermore, the query device (5) is designed to apply a test voltage with an alternating polarity to the electrical safety circuit (13). Furthermore, a people-transporting system (2) having such a monitoring system (1) is provided. |
