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Registered Address: Haina City, No. 555, Meili Road, Second Ring West Road, Saiyin District, Jinan, Shandong, China Building 315, No.22, Headquarters Park

The intrinsically safe Gigabit network switch for mining is a key component of the underground part of the mining wireless communication system. It can be used in conjunction with the dispatching host, communication substation, mobile phone, identification card, card reader substation and other equipment to realize wireless communication, personnel positioning and other functions. The switch can also communicate with the dispatching host, transmit the collected signals to the ground dispatching station, and execute various remote control instructions issued by the dispatching station.

This switch is an intrinsically safe product for mining. It can be used in coal mines with explosive mixtures of methane and coal dust, but without significant vibration and impact, and without corrosive gases that damage insulation.

Explosion-proof type: Intrinsically safe type for mining Explosion-proof mark: Exib I Mb

II. Basic functions

a) The switch complies with the IEEE802.3 protocol and should have Ethernet optical port, Ethernet electrical port, and support full-duplex/half-duplex.

b) The switch has a CAN bus interface.

c) The switch has an RS485 data interface.

d) The switch supports redundant network structures such as rings.

e) The switch has the functions of initialization parameter setting and power-off protection. The initialization parameters can be input and modified through the network or programming interface. f)

The switch has VLAN function.

g) The switch has self-diagnosis, fault indication, power supply, working status, communication status, and IP address display functions.

III. Main technical parameters

1. Power supply

a) Rated working voltage: DC 12V, fluctuation range is 9~24V

b) Working current: ≤1000mA

2. Ethernet Gigabit optical port: 8; Maximum transmission distance: 20km

3. RS485 bus port: 4; Maximum transmission distance: 2km

4. Ethernet electrical port: 7; Maximum transmission distance: 100m

5. The maximum network reconstruction self-healing time is not more than 500ms.

6. Equipment throughput: ≥30000Mbps.