JPH0480195U - - Google Patents

Description

[Brief explanation of the drawing]

Fig. 1 is a schematic diagram showing an embodiment of this invention, Fig. 2 is a circuit diagram showing a drive circuit of the above embodiment, Fig. 3 is a circuit diagram showing a short circuit of the above embodiment, and Fig. 4 5 is a circuit diagram showing a drive circuit of another embodiment of the invention, FIG. 6 is a circuit diagram showing a short circuit of the other embodiment, and FIG. The figure is a schematic diagram showing a building management system, and FIG. 8 is a front view showing a slave station of the building management system. In the figure, 9 is a drive circuit, 10 is a short circuit, and 11 is a short circuit.
is an additional device. Note that the same reference numerals in the figures indicate the same or corresponding parts.

Claims (1)

[Claims for Utility Model Registration] A switch that starts inspection, a first drive coil that operates when the switch is turned on, and a first drive coil that turns on and off based on the operation of the first drive coil.
a second drive coil that operates based on whether the first contact is turned on or off; and a second contact that is turned on or off based on the operation of the second drive coil. A short circuit having a third contact that turns on and off based on the operation of the first drive coil, and a common terminal and a signal terminal connected to an external common terminal and a signal terminal, and the third contact an additional device that short-circuits or opens between the external common terminal and the signal terminal based on whether the switch is turned on or off, and the switch, the first drive coil, and the second contact form a first series circuit. the first contact and the second drive coil constitute a second series circuit and are connected to the power supply, and the signal terminal, the third contact and the common terminal An input/output inspection device comprising three series circuits.