Products - Mosaic-Type Built-In Devices
The semaphore indicator is preferably used in situations that require visual simulation of the circuit or operating state of a device and indication of the fault position in addition to the ON and OFF positions. Semaphore indicators are particularly suitable for monitoring power breakers and disconnectors in complex transformer substations which are represented in the form of a mimic diagram of relatively small dimensions. Semaphore indicators are also used for monitoring slides, valves, etc. in supervisory flow diagrams.
The semaphore indicators of type BM 18 and BM 24 can be used in M18 and M24 mosaic systems, respectively.
The control electronics and the precision d.c. motor with a disk at the shaft end are the main components of the semaphore indicator. When the semaphore indicator is activated, the disk rotates into the defined position indicating an "ON", "OFF" or "Fault" state.
A simple mechanism ensures that the semaphore precisely holds the defined position.
The components of the semaphore are contained in a robust plastic case.
The semaphore indicator is completely wired up and is supplied with a three-core cable of 2.2 m length with plug connector.