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TE1660N Datasheet(PDF) 4 Page - MORNSUN Science& Technology Ltd. |
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TE1660N Datasheet(HTML) 4 Page - MORNSUN Science& Technology Ltd. |
4 / 5 page The copyright and authority for the interpretation of the products are reserved by MORNSUN TExxxxN 2013.04.25-A/0 Page 4 of 6 Function In the figure, Signal in is detected electrical signals, Signal out is electrical signals for control system of isolation transmission. VCC is isolated power supply provided from control system. Typical power signal is positive and negative sine wave signal. 431 R1 R2 and R3 is voltage stabilizing circuit in the circuit, and they can achieve zero adjustment of the input signal. Amplifier of TE_N series achieve signal transmission function and power supply function of voltage stabilizing circuit. R4,R5,C1 achieve DC output signal filtering functions. Working principle Supposing detected signal is 5V sine wave signal. When the input signal is passed through stabilizing circuit which is composed of 431,R1,R2 and R3, input signal of TE_N transmitter become 0~10V sine wave signal. If the amplifier is the one which has 0~10V input and 0~10V output, TE_N transmitter output would be output 0~10 v sine wave signal at this time. After passed through filter circuit which is compos ed of R4,R5 and C1, the DC component of 0~10V sine wave signal is filtered, and the output only have ±5V sine wave signal. Parameter In the application, typical values of R1, R2 and R3 are 10K Ω, and reference Voltage of 413 is 2.5V. Component regulated voltage is 5V. Voltage accuracy can achieve a variety of application requirements of high precision according to the resistance tolerance precision. Typical application range of R4 is 2K Ω~5KΩ. Because signal output voltage is positive and negative, there will be a transmitter output signal current return-irrigation phenomenon when the voltage signal output is negative.R4 should choose a smaller value in order to reduce the influence of the return-irrigation current. C1 should be chosen low internal resistance capacitance. Normally ceramic capacitor with volume more than 10uF will be suitable. Because C1 achieves the function of getting through AC and preventing DC. Large capacitance resistance and small capacitance value can make AC signal distorted. The recommended value of R5 should be more than 100K Ω, and implements a DC signal to zero in the circuit. The increase of value of R5 can make the time of DC signal to zero longer, and make the startup time longer. If load in circuit is too small, then the load for AC will be increased, so that AC signal will be distorted. Notice Because the transmitter of TE_N series can not input negative voltage signal, it need to pay attention to narrow signal voltage amplitude and have the necessary margin in the design. It can guarantee the normal work of the circuit and reduce the risk of signal distortion. 4.Application —Zero and full adjustment function Zero and full adjustment recommended setting circuit is as shown Routine zero and full adjustment circuit 24 V power input zero and full adjustment circuit Function Zero adjustment function by setting up adjustment resistor at the zero point can change the zero signal transmission, which makes the output signal overall migration. Full adjustment function is also called the gain adjustment function, and it can change the ratio of signal transmission through the set up corresponding adjust resistance at the full adjustment, and the isolation transmission proportion of input and output signal value would be changed. Usage Adding and reducing negative zero resistance can reduce the zero of signal output. Adding and reducing positive zero resistance can increase the zero of signal output. Adding and reducing negative full adjustable resistance can reduce the ratio of signal transmission, Adding and reducing negative full adjustable resistance can increase the ratio of signal transmission. You can use potentiometer to adjust the output signal of zero and full in practical application. As shown in the figure, the terminal of full or zero adjustment is connected to the sliding of potentiometer, and the both ends of potentiometer is to the zero or full reference of positive and negative regulating reference . Sliding potentiometer to adjust signal full or changing the ratio of rise and fall can also adjust zero and full of the output signal. As shown in the figure, zero positive reference adjusting is different between 24V input product and other power input products, so the zero adjustment circuit is also different. Adjusting the potentiometer to positive can increase zero or full of the corresponding signal. Adjusting the potentiometer to negative can reduce zero or full of the corresponding signal. The maximum recommended range of potentiometer is 10K Ω~1MΩ, detail resistance selection according to the adjustment accuracy. Choose larger resistance potentiometer for high precision fine-tuning. Choose smaller resistance potentiometer for a wide range of rough adjustment. Notice The accuracy of transmitter of TE_N series is already 0.1%FS during production and before shipment, using the function of zero and full adjustment will affect original accuracy. Due to the effect on temperature drift of external adjustment resistor and the stability of the potentiometer, temperature drift of product will be changed, too. The 1:1 ratio for positive resistance and negative resistance of full adjustment potentiometer is desired full adjustment. For the zero adjustment potentiometer, the ratio between positive resistance and negative resistance, which makes the zero point of different products predetermined Zero point is diverse. Please set the value of potentiometer according to actual situation. NOTICE 1. Please read the user manual carefully before using. If any question please contact our FAE. 2. Please do not use this product in hazardous area. 3. The power supply of this product should be 24VDC power source. It is forbidden to use 220VAC power supply. 4. To avoid invalid explosion protection function, or any failure, disassembling this product is forbidden. Zero adjustment potentiometer Full adjustment potentiometer Power input Power output Singal input Power distribution output D3 3 + 1 - 2 + 9 - 8 D4 D5 + 18 + 10 - 11 - 17 C1 D1 D2 2 C 16 Zero adjustment potentiometer Full adjustment potentiometer Power input Power output Singal input Power distribution output + 18 + 10 - 11 - 17 C1 D1 D2 2 C 16 15 D3 3 + 1 - 2 + 9 - 8 D4 D5 |
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