Two-wire AC signal feed isolation transmission digital meter:DIN 1X1 ISO NNAC-O1(LED1)
Product Category: Passive Intelligent Isolation Amplifier with LED Display
Input: 0-1VAC,0-500VAC,0-1AAC,0.5-30AAC Output: 4-20mA
Power: -- Isolation Voltage: 3000VDC
Package: DIN35 Traffic Watch: times
Remarks: Two-wire AC signal feed isolation transmission digital meter
Product Description
Two-wire AC signal feed isolation transmission digital meter:DIN 1X1 ISO NNAC-O1(LED1)

Features :
● High-precision and intuitive display of loop current value for on-site debugging and monitoring
● Four LED digital display, high precision, display resolution at the end of ± 2 words
● Programmable setting of two-way lower limit isolated switch alarm signal output
● Detection conversion accuracy, linearity error level: 0.5
● The product does not need independent power supply, two-wire signal loop power supply output
● Signal input: 0 ~ 1-500VAC voltage signal (40 ~ 60HZ)
                          0 ~ 0.5-30AAC current signal (40 ~ 60HZ)
● Output signal: 4~20mA (two-wire loop DC analog signal transmission)
● Input and output are completely isolated, isolation voltage 3000VDC
● Low cost, small size standard DIN35 rail mounting
● Industrial temperature range: - 20 ~ + 70 °C
 
typical application :
● AC, sine wave signal monitoring, acquisition, isolation and transformation
● Power monitoring equipment, medical monitoring instrument isolation barrier
● Sensor AC signal is converted into standard DC analog signal
● AC motor, transformer signal detection and distortion-free transmission
● Power control system signal isolation, detection and monitoring
● Isolation and long-distance transmission of industrial field AC signals
● Instrumentation signal isolation, transmission and reception and transmission
● Ground interference suppression
● Oil, chemical, environmental protection, mining system control point monitoring
● Speed, vibration, pulse signal display transmission and control
● AC isolation transmitter working status display and control

SunYuan DIN1X1 ISO AC-O1 (LED1) is a passive two-wire AC-to-DC (AC/DC) signal display control isolation transmitter that converts AC current or voltage signals into linear 4-20mA. A new display control device designed with standard analog signal output.
 
  The module uses high-performance loop stealing technology, which does not require independent power supply, and integrates display, alarm, isolation and transmission. The output of the product is designed for the two-wire power supply loop (on-site explosion-proof function) in series with 24VDC and sampling resistor (or load resistor). It is the same as the commonly used analog input interface board (host computer), PLC, DCS or other. The analog input and output interfaces of the meter are matched to realize on-line monitoring and control of AC voltage and current. The internal integrated process and new technology isolation measures enable the device to meet the 3KDC isolation voltage and industrial grade wide temperature, humidity, vibration and harsh environment requirements.
 
  DIN1X1 ISO AC-O1 (LED1) is an intelligent design with standard DIN35 rail mounting. The two-wire loop power supply output mode can save two power lines, simplify the system design, reduce the user wiring cost, and directly apply the control circuit or the signal loop in the DCS/FCS system to provide power to isolate the input AC signal. The transmission is converted into a two-wire 4-20 mA DC current signal output, and is linearly displayed in decimal numbers according to the set range. This two-wire passive type of operation has simple and convenient wiring, small size, high precision and low cost. The traditional embedded analog display meter is adjusted by a potentiometer, and the adjustment parameters are single, inflexible, and greatly affected by temperature. Compared with the traditional analog display table, this intelligent digital display table is operated by two key combinations and controlled by the central processing unit CPU, which can realize setting of various parameters such as zero point, full scale, decimal point, alarm and delay. , with strong flexibility and practicality. The digital display meter adopts an LED display panel, and each section of the display panel is driven by a constant current to make the brightness in the range of 4-20 mA uniform, and has reverse and overcurrent protection functions. Products are widely used in electric power remote monitoring, electrical automation, instrumentation, rail transit, industrial control intelligence and other fields.
 
  DIN1X1 ISO AC-O1 (LED1) products are mainly used for isolation transmission and display control of AC voltage and current signals. Its embedded digital display is used to measure the 4-20 mA signal and can be directly measured on the 4-20 mA loop signal without external power supply. The displayed number is not a direct current measurement, but a preset value of 4 mA, 20 mA, and the measured current value is linearly displayed relative to the two preset values. For example: 4mA is set to 0, 20mA is set to 8000, then the meter will display 2000 when inputting 8mA, 4000 will be displayed when inputting 12mA; if the 4mA is set to 1000, 20mA is set to -1000, when inputting 12mA, the watch will be 0 will be displayed, and the table will display -500 when 16 mA is input. The maximum display range of the digital display is 9999, which is four digits; the minimum is -1999. At the same time, it has alarm signal output function with two isolated switch outputs, which can display, control and alarm on the spot. Two alarm points are set and there are positive and negative alarm direction settings. The alarm object of the alarm point is for the display reading. The last decimal point of the LED panel flashes during the alarm, and the alarm information is isolated and output by the digital optocoupler. For products that need to set the alarm function, the upper or lower limit alarm value and alarm mode can be modified by the programmer. For detailed setting method, please refer to the “Display Table User Manual”. Remark: The alarm signal is the OC gate (open collector) output. For the specific application, please refer to [Alarm Output and Application].
 
Product selection example:
Example 1: Input: 0-5AAC; Output: 4-20mA; Product model: DIN 1X1 ISO 0-5AAC-O1
Example 2: Input: 0-500VAC; Output: 4-20mA; Product Model: DIN 1X1 ISO 0-500VAC-O1

Product pictures:
Alarm output and application:
1. The DC level signal generated by the two-way alarm signal in the main CPU chip is isolated and output by the optocoupler. The output low level indicates the alarm state, and the output high level is the non-alarm state.
2. Because the display controller is passive two-wire system, the minimum working current is 3mA, so the alarm signal is also very weak, the minimum is only 0.5mA. The signal is isolated by a phototransistor type photocoupler with a strong current spreading capability, and an open collector (OC gate) output is used. The output is connected to the pull-up voltage, and the current can be expanded up to 120mA. The principle of this phototransistor type photocoupler is shown in the figure below: the instrument signal is isolated by optocoupler, 5, 6 "1H /1L", 7, 8 "2L /2 H" wiring port is optocoupler OC gate The output end of the signal is connected to the external power supply circuit of the instrument, and further amplifies and energizes the alarm signal, and finally reaches an actuator that can drive the required sound, light, electricity, refrigeration, heating, and motor. 5, 6 "1H / 1L" is the first alarm output, 7, 8 "2L /2 H" is the second alarm output, "1H", "2H" connected to the phototransistor collector, "1L", "2Lemitter.

3. Because of the limitation of the maximum current of the phototransistor Ic, its expansion and driving load capacity is limited. If the user needs more driving current, it can be used to drive relays, solenoid valves, stepping motors and other devices on site, and can externally connect the power expansion circuit. The power amplifier tube or servo circuit is subjected to current amplification and special processing.
 
 
 
Order selection instructions:
Please read the entire contents of this manual carefully before ordering to determine whether the product meets the user's on-site application and is correctly selected.
1. The factory default setting of this product is set to “0.0” by 4mA and “200.0” by 20 mA.
2. When ordering, the user should first put forward the display specification requirements. We will adjust the digital display meter before leaving the factory, which is convenient for users to use directly.
3. When ordering, please indicate the type and parameters of the access signal: AC, DC, resistance (displacement, potentiometer), bridge (pressure, weighing), etc.
Sunyuan Technology SY Series Intelligent Digital Display
 
 
Sunyuan Technology the newest developed SY LED / SY LCD series,with low cost, small size isolation transmitter 4-20mA two-wire passive intelligent display control instrument, dedicated to sensors and isolation transmitters |isolation amplifiers | PLC | DCS, etc.Isolated transmission of analog signals and intelligent display control. These LED or LCD four-bit high precision intelligent digital display meters use the principle of two-wire passive digital adjustment. The electrical signal passed through the digital measuring circuit is used as the input signal of the display meter and also the working power of the display meter. This two-wire passive type of operation eliminates the need for additional auxiliary power supplies. It is easy to connect in industrial field and has reverse protection and overcurrent protection. Products are widely used in industrial intelligent control, instrumentation intelligence, petrochemical, environmental monitoring, rail transit, electric vehicles, smart home, fire safety, mining monitoring and other industries on temperature, pressure, flow, liquid level, displacement, speed, frequency Monitoring of physical quantity control points. In industrial control systems, most applications use a variety of related sensors to convert physical quantities such as temperature, pressure, and displacement into 4-20 mA electrical signals, and intelligent digital display displays these electrical signals in real time for human convenience. Carry out all kinds of monitoring and control

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