Устройство измерения и контроля защиты фидера ABB RED615

our website : https://www.kerienplc.com/

Kerien Automation Co., Ltd. is located in the beautiful coastal city-Xiamen, Fujian, China. It is one of the beautiful coastal tourist cities in Southeast China.
We are a supplier of industrial automation parts. We focus on PLC modules and DCS cards, and undertake PLC control cabinets and inverter control cabinets. The brands are as follows: 

Invensys Foxboro,Invensys Triconex,Rockwell Allen-Bradley Relianc,Schneider Modicon,ABB,Siemens,GE FANUC,Yaskawa,Bosch Rexroth,Westinghouse,Woodward,Ovatin...etc.

3. Attention shall be paid to the connection of analog signal. The analog input signal in the frequency converter usually refers to the voltage signal of 0~10V/5V or the current signal of 0/4~20mA; These analog input signals can be given externally through the terminal blocks. When the frequency converter is connected with PLC, these analog input signals can also come from the analog output signals of PLC, as shown in Figure 3. When connecting analog quantity, pay attention to:
(1) Impedance matching. The output module of PLC is selected according to the input impedance of the frequency converter to achieve impedance matching between the two.
(2) Voltage range. When the voltage signal ranges of the frequency converter and PLC are different (for example, the input signal of the frequency converter is 0 ～ 10V, while the output voltage signal range of PLC is 0 ～ 5V; or the output signal voltage range of PLC is 0 ～ 10V, while the input voltage signal range of the frequency converter is 0 ～ 5V), it is necessary to use a series resistance to divide the voltage, so as to ensure that both are within the normal voltage range
The device may be damaged if the voltage exceeds the limit.
(3) Shielded cable or twisted cable shall be used. For frequency converter and PLC, weak current control signal (voltage 0 ～ 5V/10V, current 0/4 ～ 20mA, etc.) is easily interfered by external strong signal, so appropriate shielding measures shall be taken for control signal. The common way is to use shielded cable for shielding; For long distance control loops, twisted cables should be used, and the twisted spacing of twisted cables should be as small as possible.
(4) The main and control cables are laid separately. During actual wiring, pay attention to the distance between the main and control cables. To ensure that the interference and noise at the main circuit side will not affect the control circuit.

AI845 3BSE023675R1
AI890 3BSC690071R1
AI893 3BSC690141R1
AI895 3BSC690086R1
AO810V2 3BSE038415R1
AO815 3BSE052605R1
AO820 3BSE008546R1
AO845A 3BSE045584R1
AO890 3BSC690072R1
AO895 3BSC690087R1