NHR-A37CO series communication signal input isolated safety grid

Product Introduction:

NHR-A37CO series communication signal input isolation safety gate can realize RS-485 digital signal in the danger zone and safety zone two-way communication, it can also be converted into RS-232 digital signal isolation transmission to the safety zone, the product needs independent power supply, input/output/power three isolation. This product can be used on devices with RS-485 communication interface.

Precautions in installation Safety grid:

It should be installed in a safe place, and the environmental conditions meet the requirements of "Conditions of Use" in the "Safety grid Selection Sample". The connecting wires of the intrinsic safety end (blue end) and the non-intrinsic safety end circuit of the isolated safety gate should be laid separately in the manifold groove, and no other power lines, including the power lines used by the intrinsic safety circuit, are allowed in the distribution pipes of the independent capital safety side of each. The wire leading to the dangerous place should be selected with the blue mark intrinsic safety wire, the soft copper area of the wire must be greater than 0.5mm, the insulation strength should be greater than 500V. Before commissioning the isolated safety gate, it is necessary to pay attention to whether the model, wiring method and line polarity of the isolated safety gate comply with the provisions of the design and product requirements, otherwise it may cause injury to the person and equipment. Do not use a megohm meter to test the insulation strength between isolated safety grid terminals. If you want to check the insulation strength of the system, you should first disconnect the wiring of all the isolated safety gate, otherwise it may cause damage to the internal circuit of the safety gate. Before programming the safety gate in the field, all wires must be disconnected and then connected to the programmer, and then powered on to program, otherwise it may cause adverse consequences. The on-site instruments connected with the isolated safety gate shall adopt the instruments that have passed the explosion-proof test and obtained the explosion-proof certificate by the relevant explosion-proof inspection department recognized by the State.

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1. All the items sold by the company, module card parts, etc., the quality problems arising from normal use during the warranty period are replaced free of charge, and there is no evasion.

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