SunYuan SIP8 Pin/ SIP12 Pin packaged 2-wire 4-2OmA (0-20mA) Isolation Module：ISOS 4-20mA/ ISO 4-20mA adopts Sunyuan Technology's unique electromagnetic isolation coupling invention and patent technology, without the need for independent power supply, the internal small input equivalent resistance, so that the input voltage value of the IC reaches an ultra-wide range (8.5~32VDC), can be directly connected to the industrial field sensors, physical transmitters and other devices in the two-wire system 4-20mA or 0-20mA It can be directly connected to industrial field sensors, physical transmitters and other devices in the two-wire 4-20mA or 0-20mA detection circuit, without external auxiliary power supply, to realize the 4-20mA signal anti-jamming isolation, long-distance distortion-free transmission. The internal integration process and new technology isolation measures enable the device to achieve 3KVDC isolation isolation voltage, and meet the requirements of industrial field wide temperature, humidity, vibration and other harsh environments. 4-20mA current loop two-wire passive type isolation series products are very easy to use, without any external components to achieve 4-20mA or 0-20mA current loop isolation transmission, the product has a PCB board mounted IC package, DIN35 standard rail mounting and PIM panel embedded mounting methods. DIN-rail mounting can realize signal 1-in&1-out, 2-in&2-out, 3-in&3- out and other multi-channel isolation transmission function. PIM panel embedded intelligent transmission meter can realize various functions such as 4-20mA signal isolated display, alarm control and long-distance distortion-free transmission.Widely used in metallurgy and mining, petrochemical industry, electric power equipment, medical instruments, industrial automation, new energy facilities and military scientific research and other fields, the user can choose the appropriate products according to the needs of the site.

4-20mA (0-20mA) Current Loop 2-wire Passive Type Analog Signal Isolators: ISOS 4-20mA / ISO 4-20mA Series

         SunYuan ISOH 4-20mA is SunYuan's newly developed industry's highest isolation voltage (10KVAC), small size (16 pins single in-line SIP16 Pin) low-cost two-wire passive 4-20mA current loop isolation module.This new product is a passive type analog signal isolation hybrid IC with 4-20mA current signal input in the front stage and 4-20mA output in the rear stage. The IC contains current signal modulation and demodulation circuits, signal coupling and isolation conversion circuits, etc. inside.This new product adopts the unique SunYuan Technology magneto-electric coupling isolation and high-efficiency circuit taking power invention patent technology, which effectively solves the signal isolation circuit's dependence on the power supply when it is working, and realizes the high-precision and high-linearity 10KV anti-EMS high isolation transmission of 4-20mA (0-20mA) signals between the industrial field sensors and instruments, PLCs and DCSs. 16-pin single-row direct insertion of small size (46X22X12mm) standard PCB board mounting design, can be embedded in the installation of instrumentation, sensors, PLC and other operations inside the control board, effectively simplify the user's choice of system design options, reduce the volume and wiring costs.

         ISOH 4-20mA Adopting SunYuan Technology's unique electromagnetic isolation coupling technology, no need for independent power supply, internal very small input equivalent resistance, so that the IC's input voltage value reaches an ultra-wide range (8.5~32VDC)，This patented technology products can be directly connected in series in the industrial field PLC, instrumentation and sensors, physical transmitters and other devices in the two-wire 4-20mA or 0-20mA working circuit, without external auxiliary power supply can be realized 4-20mA signal anti-interference isolation, long-distance distortion-free transmission. The internal integration process and new technology isolation measures enable the device input and output ports to reach a high isolation insulation voltage of 10KVAC, and can meet the requirements of industrial field wide temperature, humidity, vibration and other harsh environments. The products are available in IC module package and DIN35 standard rail mounting, and are widely used in the fields of rail voltage monitoring, generator or motor safety operation monitoring, power transmission and distribution remote monitoring, instrumentation and sensor signal transmitting and receiving, medical equipment safety isolation barriers, industrial intelligent control, nuclear power equipment and so on.

Typical application

 

10KV High Isolation 4-20mA (0-20mA) Current Loop 2-wire Passive Type Analog Signal Isolator: ISOH 4-20mA Series

Metro rail voltages are now commonly used at 750VDC and 1500VDC. The ISOH series of 6000VAC high isolation amplifiers for rail voltage monitoring are designed for monitoring systems for PLCs of rail transit circuits.

　 In rail transportation, the track circuit control system is one of the important equipment in signaling equipment to ensure the automation of train command，Therefore, it is necessary to check the status of the track circuit frequently to ensure that the track circuit is in normal condition and works reliably. And whether the working condition of the track circuit is normal or not can be revealed by monitoring the change of track voltage. With the development and use of microelectronics technology, especially programmable controller PLC based on microprocessing technology, integrated computer technology and automation technology, resulting in station signal interlocking control system, is gradually replacing the relay type 6502 electrical centralized control system, and its track voltage test panels are also PLC composed of track voltage monitoring system to replace.This track voltage monitoring system is a contactless control circuit with long equipment life, stable and reliable performance, accurate test data, and easy and fast operation. For the test of track section voltage of the whole station, you only need to use the mouse to click the cycle test button in the track voltage monitoring screen, and all the test data will be displayed quickly. At the same time, the computer automatically compares the monitored voltage value of each track section with the set standard voltage value, and if the difference between the two is found to be too large, i.e., the track voltage is too high or too low, an alarm message is given to inform the maintenance personnel to deal with the potential faults in advance.The main process of track voltage monitoring system is: the upper computer (workstation) sends out track voltage monitoring commands, the lower computer (PLC) receives the commands, after logic operation, sends out the address signal to drive the track voltage collector, selects a certain collection channel, converts the collected 0-30 volts of AC voltage into 0-5 volts of DC voltage signal, and sends it to the PLC system, and puts the result into the data storage area after logic operation and data processing, the upper computer reads out the data to be displayed on the CRT.

    ISO 4-20mA-H Current Loop 6000VAC High Isolator is a monolithic two-wire isolation interface chip. The IC contains current signal modulation and demodulation circuits, signal coupling and isolation conversion circuits. The very low input equivalent resistance enables the IC to operate over a wide range of input voltages (7.5-32V) to meet the needs of users who want to transmit 4-20mA (0-20mA) signals over long distances without the need for an external power supply, and without distortion. The internal ceramic substrate, printed resistor process, and new technology isolation measures enable the device to achieve 6000VAC isolation voltage and industrial grade wide temperature, humidity, and vibration field harsh environment requirements.

 Product Features                                     

1.Standard SIP16 or DIP24 flame retardant package                                                   

2.Signal inputs/outputs isolated at 5400VAC.                   

3.Inputs and outputs do not require external power supply or external components.                                    

4.4-20mA current input/output with high accuracy (distortion <0.2%).        

5.Industrial grade wide temperature (-45 -+85 ℃)                    

6.Extremely wide input voltage range (7.5-32V).                      

7.High linearity (non-linearity <0.2%)                      

8.Low impedance (voltage drop <4V)  

9.Frequency response (small signal bandwidth): 2KHZ (Io=20mA)

Typical Applications 

1.Analog signal data isolation and acquisition 

2.Isolated 4-20mA signal transmission  

3.Industrial field signal isolation 

4.Ground line interference suppression  

5.Signal transmission over long lines without distortion  

6.Instrumentation signal transmitting and receiving 

7.Isolated safety barriers for power monitoring and medical equipment

Rail Voltage Monitoring Application Diagram

       Ultra-small volume, low cost, high precision standard DIN35 rail mount isolation amplifier is a kind of current loop isolator which isolates industrial field sensor, PLC analog signal (4-20mA/0-20mA/0-10mA) and then outputs (4-20mA/0-20mA/0-10mA) proportionally. Input signal interference suppression filter circuit, signal modulation circuit, signal isolation circuit and output demodulation filter circuit are included inside the product. Wide creepage distances on the input and output sides and internal isolation measures enable this series to realize a 3KVDC isolation voltage between signal input and signal output.　　   

       DIN (1X1 / 2X2 / 3X3) ISO 4-20mA series analog signal isolator is very easy to use, free of zero and gain adjustment. Widely used in industrial control systems in multiple analog signal input and output control, the system internally through the DSP, PLC DA conversion output signal to display and control other devices adjustable output, industrial field multi-channel sensors, PLC (4-20mA/0-20mA/0-10mA) current loop isolation and so on.

Features 

●Low cost, small size, high precision DIN35 rail mounting. 

● No need for external potentiometers and other components, free of zero and gain adjustment. 

● One, two, three-way 4-20mA/0-20mA isolation (distortion <0.2%) 

●Extremely high linearity over the full range (non-linearity <0.2%) 

● 3KVDC full isolation between channels, signal inputs and outputs 

●Low impedance (overall voltage drop <2V), no external components or power supply required 

● 4-20mA signal ultra-wide range voltage (8.5~28VDC) inputs 

● Frequency response (small signal bandwidth): 2KHZ (Io=20mA) 

● Industrial-grade temperature range: - 25℃ ~ + 70℃

Typical Applications 

● Industrial field 4-20mA current loop isolation and long line transmission 

● Signal acquisition isolation and anti-interference between PLC and DCS input channels. 

● Ground interference suppression between multiple sensors 

● Reliable sending and receiving monitoring between instrumentation signals and sensors. 

● Analog signal data acquisition isolation and long line distortion-free transmission 

● Power instrumentation, medical equipment monitoring and isolation of safety barriers 

● Railway transportation DC high voltage monitoring 6KV isolation safety barrier

Product Selection Examples 

Example 1: Three-way two-wire passive 4-20mA signal isolator; DIN35 DIN rail mount, signal input: 4-20mA; signal output: 4-20mA; Model No.: DIN 3X3 ISO 4-20mA 

Example 2: Two 2-wire passive 0-20mA signal isolator; DIN35 DIN rail mount, signal input: 0-20mA; signal output: 0-20mA; Product no.: DIN 2X2 ISO 4-20mA

Typical applications for single 4-20mA current loop isolators

DIN 1X1 / 2X2 / 3X3 series product dimensions and wiring terminal description (product logo model number printed on the case)

Two-wire Passive Analog Signal Isolator|Isolation Amplifier|Isolation Transmitter New Product Introduction

Introduction: Passive, in terms of electronics, it means that the circuit can work when there is a signal without a power supply. Usually, devices that can work without a power supply are called passive devices. The commonly used passive components in circuits are mainly diodes and resistors. , Inductance and capacitance components. The devices in the circuit that require an external auxiliary power supply to work normally are called active devices. Active devices are generally used to isolate and amplify signals, convert and transmit, and so on. Commonly used active devices are transistors, power amplifiers, signal transmitters, isolation amplifiers, field effect transistors, thyristors and other devices. According to the current industrial Internet's matching needs of various sensors, transmitters and PLC, DCS systems in the industrial field, Shunyuan Technology has launched a series of new products of low-cost, small-volume passive (no external auxiliary power supply) analog signal isolators , Provided to sensor and instrument manufacturers and industrial Internet system integration design engineers to choose. The following recommend several new two-wire 4-20mA output passive analog signal isolation transmitter optional technical solutions, for manufacturers and industrial Internet system integration engineers on-site application reference.

Signal isolator new product 1: Passive DC unidirectional voltage current, electronic ruler displacement resistance signal to two-wire current signal isolator

Passive displacement resistance signal (ISO R-O), analog voltage signal (ISO U-O), analog current signal (ISO A-O) transmitter is the industry's smallest volume and low cost passive loop-fed analog signal isolation transmitter IC . The IC has a unique high-efficiency signal coupling transformer loop feeding technology, which provides power supply operation through the subsequent current output loop feeding mode, without the need for an external working power supply. The IC is matched with sensors, instrumentation, PLC/DCS in the design plan, can adapt to various specifications of analog voltage, current or displacement resistance signal input, and amplify the active signal of industrial field two-wire/three-wire/four-wire general sensor After conditioning and isolation and transmission, it outputs 4-20mA/2-10mA/4-12mA/4-8mA/12-20mA and other two-wire analog current signals with various parameters. The core components in the technical solution: Passive displacement resistance signal (ISO R-O), analog voltage signal (ISO U-O), current signal (ISO A-O) The transmitter is designed as a high-precision, small-volume standard SIP12 Pin flame-retardant IC package , It adopts a unique magnetic isolation coupling method and high-efficiency post-feeding technology, which can realize DC voltage, current, one-way signal and angular displacement, electronic ruler, potentiometer and other analog signals to the two-wire loop feed current The precise isolation conversion of the ring signal matches the standard analog input ports of various types of instruments (such as PLC, DCS, FCS). The core products of the solution include small-volume IC package PCB board mounting and DIN35 standard rail mounting. The DIN rail mounting method can realize signal one in and one out, one in and two out, one in and three out, and two in and two for industrial sites. Output, four-way, eight-way, and sixteen-way signal isolation conversion function, users can choose technical solutions according to site needs.

Detailed technical information: https://www.sunyuansz.com/uploads/soft/210811/2-210Q1103Q2.pdf

 

New product of signal isolator 2: Passive low-cost, small-sized two-wire 4-20mA (0-20mA) current loop analog signal isolator:
Two-wire passive ISO 4-20mA (SIP12 Pin package) and ISOS 4-20mA (SIP7 Pin package) 4-20mA current loop signal isolator. It is a front-end 4-20mA (0-20mA) current signal input , Passive signal isolation module with 4-20mA (0-20mA) current signal output. The solution uses a unique electromagnetic isolation mode and high-efficiency input loop power stealing technology, which effectively solves the dependence of the transmission current signal isolation between the instrumentation and the sensor on the power supply, and realizes the 4-20mA (0-20mA) standard signal High precision and high linearity isolation. In the scheme design, the passive signal isolator obtains energy from the current loop of the sensor, and outputs an active 4-20mA analog signal after isolation to drive or control instrumentation, PLC, and DCS devices. The core products of the solution include small-volume IC package PCB board mounting and DIN35 standard rail mounting. DIN rail mounting can realize multiple signals such as one in and one out, two in and two out, and three in and three out for industrial sites. With the isolation conversion function, the user can choose the scheme according to the needs of the scene.

Detailed technical information: http://0032.psznh.cn/static/upload/file/20230906/1693993393454775.pdf

New product of signal isolator 3: Passive low-cost, small-sized two-wire 4-20mA loop-fed analog signal isolator
ISO 4-20mA-F (SIP12 Pin) and ISOS 4-20mA-F (SIP7 Pin package) 4-20mA current loop signal isolation distributors are two-wire loop-powered isolation modules. Through the post-feeding mode, it supplies power to the front-level two-wire equipment, and receives the 4-20mA current signal output from the two-wire equipment, and outputs a 4-20mA current signal to the sensor after being isolated by the module. This solution adopts a unique electromagnetic isolation mode and high-efficiency post-feeding technology, which effectively solves the dependence of current signal isolation on the power supply, and realizes the accurate isolation and transmission of standard signals of 4-20mA, which can be connected to two-wire with various instruments. Control loop power supply analog input ports (such as PLC, DCS system, etc.) to match.

Detailed technical information: https://www.sunyuansz.com/uploads/soft/210811/2-210Q1102521.pdf
 
New signal isolator 4: Passive low-cost, small-size analog voltage to two-wire 4-20mA current signal V/I conversion signal isolator
ISO V-4-20mA (SIP12 Pin) and ISOS V-4-20mA (SIP 7Pin) passive V/I conversion analog signal isolation transmitter, is a voltage input, two-wire current output loop power supply signal Isolate the transmission module. Provides a set of 5V (3mA) functional expansion power supply to the input terminal through the power feeding mode of the back-end current loop to supply power to the front-end equipment, and receives the voltage signal output from the front-end equipment. Wire current signal. This solution uses a unique electromagnetic isolation mode and high-efficiency post-feed technology to achieve precise isolation conversion from voltage signals to 4-20mA standard signals, and can be connected to the analog input ports of various instruments (such as PLC, DCS systems, etc.) Match. This technical solution is very convenient to use, and can realize voltage signal input, displacement potentiometer, and other voltage signal isolation transmission that require power distribution type sensors or bridge (weighing) detection circuits without any additional components.。

Detailed technical information:  https://www.sunyuansz.com/uploads/soft/210811/2-210Q1103110.pdf

New signal isolator 5: Passive low-cost two-wire 4-20mA current to analog voltage signal I/V conversion signal isolator
ISO 4-20mA-O series (SIP12 Pin package) two-wire passive 4-20mA to voltage signal isolation converter, which can isolate the input active 4-20mA current signal and convert it into a voltage signal I/V conversion output. This solution uses a two-wire input loop power supply mode, unique high-efficiency signal loop power stealing technology, no external working power supply, greatly simplifies the user's design, and reduces user wiring costs. The module contains current signal modulation and demodulation circuit, signal coupling isolation conversion circuit, power inverter circuit, subtraction circuit, buffer processing output circuit, etc. The small input equivalent resistance enables the product to be from the sensor signal output loop Collect the current signal, and can reach the voltage drop &le; 10V when the 20mA signal is input. In order to meet the needs of users to realize long-distance and distortion-free transmission and conversion of signals without an external auxiliary power supply.

Detailed technical information: https://www.sunyuansz.com/uploads/soft/210811/2-210Q1102952.pdf

New Signal Isolator 6: Passive low-cost, small-volume two-wire 4-20mA current loop signal isolator
ISO 4-20mA-E (SIP12 Pin package) and ISOS 4-20mA-E (SIP7 Pin) two-wire passive 4-20mA analog isolation conditioning controller, which can convert the input active 4-20mA current signal into Isolated passive control signal output, used to control the two-wire loop power supply (explosion-proof mode) 4-20mA current loop, to achieve the on-site matching of sensor signal acquisition and analog input interface active load, which effectively solves the problem of collecting active 4- The 20mA current signal conflicts with the power supply of the receiving port of the two-wire current loop power supply loop. This solution adopts high-efficiency loop power stealing technology, no independent power supply is needed, and it is very convenient to use. Users can adjust the potentiometer for ADJ correction.

Detailed technical information: https://www.sunyuansz.com/uploads/soft/210811/2-210Q1102924.pdf

New Signal Isolator 7: Passive low cost, small size two-wire PWM signal to analog signal isolator
ISO D-O1 series (SIP8 Pin package) is a passive type PWM pulse width modulation signal isolation and conversion to a two-wire 4-20mA transmitter IC. The working mode of this IC is to receive the PWM signal from the front-end device through the current loop feeding mode of the back stage (output end), and output the corresponding 4-20mA standard two-wire current signal after isolation conversion. The PWM pulse width transmitter solution is designed as a SIP8 Pin (single row 8-pin in-line package) small-size PCB board welding installation method. The IC contains a signal coupling high-speed isolation conversion circuit, a precision reference voltage source switch control circuit, and a low-pass filter. The circuit, drive amplifier circuit, VI conversion circuit, etc., have the characteristics of high PWM signal conversion accuracy, good linearity, and wide output loop power supply voltage range (12-36VDC). The highly integrated process structure and new technology isolation measures enable the core components in the program to achieve: signal input and output 3000VDC isolation, and can meet the requirements of industrial-grade harsh working environment with wide temperature, humidity and vibration.

Detailed technical information: https://www.sunyuansz.com/uploads/soft/210811/2-210Q1113501.pdf

New signal isolator 8: Passive two-wire Pt100/Cu50 thermal resistance temperature measurement signal loop feed signal isolator
ISO ZW-O1 small size (12-pin single in-line IC package SIP12 Pin) low-cost passive two-wire 4-20mA loop-fed thermal resistance signal isolation transmitter, mainly used for three-wire, four-wire or two-wire system Pt10 / Pt100 / Pt1000 or Cu50/Cu100 temperature sensor signal collection, isolation and transmission. The solution is used in the temperature detection of industrial sites, and the temperature signal collected by the thermal resistance sensor can be converted into a linearly proportional standard 4-20mA current signal output according to the amount of change.

ISO ZW-O1 adopts the electromagnetic isolation mode and the patented technology of high-efficiency post-feeding invention. It can realize the precise isolation conversion from the temperature signal output by the thermal resistance sensor to the 4-20mA standard signal without an independent power supply. It can be directly used with all kinds of common The analog input ports of instruments (such as PLC, DCS system, etc.) match. The IC contains signal modulation and demodulation circuit, signal coupling isolation conversion circuit, high-efficiency DC-DC boost circuit, signal zero point, full-scale calibration circuit and Pt100 thermal resistance linearization, long-line compensation, interference suppression circuit, etc. The output circuit has a wide power supply voltage range (12-36VDC), high conversion accuracy, and good linearity. The full scale and zero point can be adjusted and calibrated on-site by the user through an external potentiometer.

Detailed technical information: https://www.sunyuansz.com/uploads/soft/210811/2-210Q1104612.pdf

New signal isolator 9: Passive two-wire alternating current (AC) current and voltage signal to 4-20mA analog signal isolator

DIN ISO AC-O1 series AC to DC (AC/DC) passive two-wire signal isolation transmitter is an isolation transformer that can output the DC standard 4-20mA current signal in linear proportion to the measured AC current and voltage Sender. Equipped with corresponding indicating instruments or directly delivered to the DCS/FCS system to realize the system's measurement and control of AC voltage or current. The output of this module is designed for the two-wire power supply circuit connected in series with 24VDC and sampling resistance (two-wire instrument), which is the same as the analog input interface board (host computer), PLC, DCS or other instruments commonly used in the industrial field. The input ports match. The high-efficiency loop power stealing technology is selected in the scheme design without the need for independent power supply. The two-wire loop power supply output mode adopted can save two power lines, which greatly simplifies the user's system scheme design and reduces the user's wiring cost.
In the scheme design, the working power circuit of the indicating instrument, PLC or DCS in the system is fully used to completely isolate the input circuit device of the signal from the output detection control loop, which improves the reliability and stability of the system operation, and fully guarantees and improves The safety factor of equipment and staff, so this program is widely used in the fields of electric power remote monitoring, electric power instrumentation, medical equipment, industrial automatic control and so on.

Detailed technical information: https://www.sunyuansz.com/uploads/soft/210811/2-210Q1133U6.pdf