What is the five-party attribute test?

Five-way communication in elevator refers to the communication between the management center host, elevator car, elevator room extension, elevator top and elevator shaft bottom in elevator intercom system, in which the communication between the car and the management center host is most closely related to elevator occupants.

What is the function of the five-way communication in the elevator?

The function of the elevator emergency alarm device is that when the elevator breaks down, the trapped people can use the device to get in touch with the outside world simply and quickly. Especially when there is no cell phone or no signal, it is even more important.

Elevator five-way function

Elevator five-way intercom is a kind of intercom dedicated to elevator car, elevator control room and management center. It can realize three-way or even five-way communication and belongs to a series in the security intercom industry. Its functions are as follows:

1. By adding elevator interphone, multi-party communication between monitoring center or duty room, machine room, car, car roof and pit can be realized. 2. One-to-one communication can be realized through the management of the switch after the elevator actively calls the host. 3. The engineering interface is completed. 4. If the central control machine takes the initiative to speak, multiple elevators managed by the switch receive at the same time, and all the voices in multiple elevators are transmitted back to the center console. 5. When an elevator breaks down, after calling the central control machine, the central control machine gets the instructions of all elevators managed by the switch, which elevator is not accurate, but it can confirm the position of the faulty elevator with the people in the car through one-to-one intercom.

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1, the intercom host in the machine room and the intercom host in the monitoring center are generally provided by elevator manufacturers.

2. The wiring between the elevator machine room and the monitoring center (including wires, conduits and laying works) is generally completed by the weak current intelligent construction unit.

3. The laying cable is: PVC sheathed shielded flexible cable 1.0mm2 two-core cable, and the model is RVVP2× 1.0.

4. The communication lines reserved by the monitoring center need to be reserved for more than 2 meters after reaching the intercom host; After the communication lines reserved in the elevator machine room reach the elevator controller, it is necessary to reserve more than 2m cables.

5. The farthest wiring distance from the elevator machine room to the monitoring center cannot exceed 2km.

6. For elevators without machine room, elevator controller is generally placed in the hoistway of 1 on the ground floor.

7. The average internal resistance of a single communication line is not higher than 4Ω per 100 meter.

8. Wiring shall meet the following test requirements: