YUTECH DATASHEETS: DC ISOLATORS AND CONVERTERS DC Current Isolator also called as DC Current Isolation Barrier: Various Input and Output Options for DC Current Isolators are as below: DC Current Isolator - Single Input and Single Output Channel (Isolating Repeater) DC Current Isolator - Single Input and Dual Output Channel (Isolating Splitter) DC Current Isolator - Dual Input and Dual Output Channel 2 Channel Isolating Repeater (Save COST AND SPACE as two channels are accommodated in the space of one) ajor COST SAVER Product DC Current Isolator - With Auxiliary Power Supply for 2-Wire Transmitter DC Current Isolator - Signal-Powered (Doesn t require External Power Supply) DC Current Isolator - Signal-Powered Dual Channel (Doesn t require External Power Supply) The Isolator is an ideal product to use for Electrically Isolating any two Devices and Protecting the Drive / DCS / PLC Cards from Wrong Connections, Excess Voltage and Ground Looping, also from Electro agnetic Interference (EI), Harmonic Distortion and RF Noise, caused by switching of Inductive Loads and other Electrical Disturbances. A must in all PLC and DCS Panels it protects your expensive circuitry at the same time ensures true and stable readings at all times. The Devices in this Category deal with DC Current Signal and are so named Current Isolators. The Signal Powered Isolator adopts a Unique Electro-agnetism Isolation Technique and Powers itself using high efficiency Electro-Larceny Technology and the Input Signal is accurately repeated over the Output at a maximum Load Resistance of 250 Ohms. Datasheet: Common General Specifications Shape : Rectangular aterial : ABS Dimensions (mm) : Length: 107.5, Height: 75mm; Width: Varies as per odel and is specified in product coding information. ounting : Din Rail ounted. Ingress Protection : IP 40, Shock and Contamination Proof. Flammability : Class V0 according to UL 94. Specifications which vary with Series: A Series L Series Ambient Temperature -20 C to 55 C Power Supply Power Consumption : For all Isolation Products is less than 1W Power Supply Voltage can be : 16 to 36 VDC. Recommended 24 VDC chosen as either AC ains or 85 to 265 V AC 50 60 Hz DC Auxiliary Power Supply : 24VDC to power 2-Wire Transmitter Loop Optional Power Supply Side Isolation : 3 Point Isolation. Rail Power Supply of 24 VDC is internally isolated from Input and Output Circuitry. Protection Reverse Voltage Protection Signal Isolation Isolation Barrier Voltage : Threshold Voltage of Isolation Barrier 5 KVRS 3 KVDC Isolation Type : Isolation Technology used Optical utual Inductance Input and Output Input Signal : DC Current: 4 to 20 ma Protections Reverse Loop Protection No EI Filtering RFI Filtering Output Signal DC Current: 4 to 20 ma aximum Load Permissible Value at 24 VDC Power Supply. 650 Ohm 250 Ohm for Current Output aximum Non-linearity Value with respect to Full Scale Range at ± 0.1% ± 0.1% maximum ambient temperature. Output Calibration Linearity trim set on fascia Slope Adjust. No YU Technologies Pvt. Ltd. Registered Office: 315, A-1, 22, anishanagar, Off Sahyadrinagar, Sangli-416 416, aharashtra, India. Works: B 8/5, Opp. SEB Substation, IDC, iraj - 416 410, Dt. Sangli, aharashtra, India. T: + 91 233 6451802; F: +91 233 2644042; E:,, W: R
Product Code: A-ISO-DC-C1-C1-S Product Code: A-ISO-DC-C1-C2-S Product Code: A-ISO-DC-C2-C2-S DC CURRENT ISOLATOR SINGLE CHANNEL. For 230vac power supply, Replace DC with AC in product code. DC CURRENT ISOLATOR - SINGLE CHANNEL INPUT AND DUAL OUTPUT. For 230vac power supply, Replace DC with AC in product code. For 4 O/Ps replace C2-S by C4-. DC CURRENT ISOLATOR - DUAL CHANNEL 2 Channels in Space of 1 ajor COST SAVER Product Product Code: A-ISO-DC-2W-C1-S Product Code: L-ISO-XX-C1-C1-S Product Code: L-ISO-XX-C2-C2-S DC CURRENT ISOLATOR - SINGLE CHANNEL WITH 24 VDC AUXILIARY POWER SUPPLY FOR TWO WIRE TRANSITTER DC CURRENT ISOLATOR SINGLE CHANNEL (SIGNAL POWERED NO POWER SUPPLY REQUIRED) DC CURRENT ISOLATOR DUAL CHANNEL (SIGNAL POWERED NO POWER SUPPLY REQUIRED) DC Current Isolator Ordering Information Product Code (PC) Product Description A-Series A-ISO-DC-C1-C1-S : DC Current Isolator - Single Channel (Single Input*, Single Output) A-ISO-AC-C1-C1-S : DC Current Isolator - Single Channel (Single Input* Single Output, AC ains Power Supply) A-ISO-DC-C1-C2-S : DC Current Isolator - Single Input Dual Outputs (Repeats the Input over Two Output Channels) A-ISO-AC-C1-C2-S : DC Current Isolator - Single Input Dual Outputs (Repeats the Input over Two Output Channels, AC ains Power Supply) A-ISO-DC-C2-C2-S : DC Current Isolator - Dual Channel (Two independent Input and Output Channels). A-ISO-DC-C1-C4- : DC Current Isolator - Single Input Quad Outputs (Repeats the Input over Four Output Channels). A-ISO-DC-2W-C1-S : DC Current Isolator - Single Channel with 24 VDC Auxiliary Power Supply for Two Wire Transmitter L-Series L-ISO-XX-C1-C1-S : DC Current Isolator - Single Channel Signal Powered, No External Power Supply required L-ISO-XX-C2-C2-S : DC Current Isolator - Dual Channel Signal Powered, No External Power Supply required Product Coding (PC) Information: Item Description Item Code Item Specification Product Description A-ISO L-ISO A-Series Isolator L-Series Isolator Power Supply DC AC 2W XX Power Supply Voltage 24 VDC. Power Supply Voltage 85 to 265 VAC. 24 VDC Auxiliary Power Supply for Two Wire Transmitter. No Power Supply. Input / Output C Input or Output DC 4 to 20mA. Channels 1 2 4 S Decoding the Product Code Single Channel Two Channels Four Channels Standard 22.5mm Width. edium 45mm Width. *Single Input refers to Single or One Input Channel, similarly Dual Output means Two Output Channels independent of each other. Page 2 of 9
DC Voltage Isolators and Isolating DC Voltage Converters: Various Input and Output Options for DC Voltage Isolators are as below: Standard DC Voltage Isolator Bipolar DC Voltage Isolator DC milli-volt Isolator Unipolar to Bipolar DC Voltage Isolating Convertor Bipolar to Unipolar DC Voltage Isolating Converter DC Bipolar milli-volt to Voltage Isolating Converter This is an ideal product to use for Electrically Isolating any two Devices and Protecting the Drive / DCS / PLC Cards from Wrong Connections, Excess Voltage and Ground Looping, also from Electro agnetic Interference (EI), Harmonic Distortion and RF Noise, caused by switching of Inductive Loads and other Electrical Disturbances. A must in all PLC and DCS Panels it protects your expensive circuitry at the same time ensures true and stable readings at all times. Datasheet: Common General Specifications Shape : Rectangular aterial : ABS Dimensions (mm) : Length: 107.5, Height: 75mm; Width: Varies as per odel and is specified in product coding information. ounting : Din Rail ounted. Ingress Protection : IP 40, Shock and Contamination Proof. Flammability : Class V0 according to UL 94. Specifications which vary with Series: A Series Ambient Temperature -20 C to 55 C Power Supply Power Consumption : For all Isolation Products is less than 1W Power Supply Voltage : 16 to 36 VDC. Recommended 24 VDC Power Supply Side Isolation : 3 Point Isolation. Rail Power Supply of 24 VDC is internally isolated from Input and Output Circuitry. Protection Reverse Voltage Protection. Signal Isolation Isolation Barrier Voltage : Root ean Square (RS) Voltage 5 KV rms Isolation Type : Isolation Technology used Optical Input and Output Input Signal : DC Voltage: 0 to 10 VDC DC Voltage: -10 to 10 VDC DC Voltage: Bipolar milli-volt Range Input and Output Side Reverse Loop Protection Protection EI Filtering and Protection RFI Filtering Output Signal DC Voltage: 0 to 10 VDC DC Voltage: -10 to 10 VDC aximum Non-linearity Value with respect to Full Scale Range at ± 0.1% maximum ambient temperature. Output Calibration Linearity trim set on fascia Page 3 of 9
Product Code: A-ISO-DC-V1-V1-S Product Code: A-ISO-DC-B1-B1-S Product Code: A-ISO-DC-B1-V1-S DC STANDARD VOLTAGE ISOLATOR BIPOLAR INPUT AND BIPOLAR OUTPUT BIPOLAR INPUT AND UNIPOLAR OUTPUT Product Code: A-ISO-DC-V1-B1-S Product Code: A-ISO-DC-1-B1-S Product Code: A-ISO-DC-1-V1-S UNIPOLAR INPUT AND BIPOLAR OUTPUT BIPOLAR ILLI-VOLT INPUT AND BIPOLAR OUTPUT BIPOLAR ILLI-VOLT INPUT AND UNIPOLAR OUTPUT DC Voltage Isolator Ordering Information Product Code (PC) Product Description A-Series A-ISO-DC-V1-V1-S : DC Standard Voltage Isolator A-ISO-DC-B1-B1-S : DC Voltage Isolator with Bipolar Input and Bipolar Output A-ISO-DC-B1-V1-S : DC Voltage Isolator with Bipolar Input and Unipolar Output A-ISO-DC-V1-B1-S : DC Voltage Isolator with Unipolar Input and Bipolar Output. A-ISO-DC-1-B1-S : DC Voltage Isolator with Bipolar milli-volt Input and Bipolar Output A-ISO-DC-1-V1-S : DC Voltage Isolator with Bipolar milli-volt Input and Unipolar Output Product Coding (PC) Information: Item Description Item Code Item Specification Product Description A-ISO A-Series Isolator Power Supply DC Power Supply Voltage 24 VDC. Input / Output V B Channels 1 Single Channel S Decoding the Product Code Input or Output 0 to 10 VDC. Bipolar Voltage Input or Output -10 to 10 VDC. Bipolar milli-volt Input -1000mV to 1000 mv (Standard Range. Other ranges maybe specified while ordering). Standard 22.5mm Width. edium 45mm Width. *Single Input refers to Single or One Input Channel, similarly Dual Output means Two Output Channels independent of each other. Dual Channel Output can be ordered as a special order. The enclosure in this case will be edium size. Page 4 of 9
Isolating DC Signal Converters: This Isolation Products Group contains: Voltage (Unipolar / Bipolar) to Current Isolating DC Signal Converters Current to Voltage (Unipolar / Bipolar) Isolating DC Signal Converter millivolt (Unipolar / Bipolar) to Current Isolating DC Signal Converters Resistance to Current Isolating DC Signal Converters Signal Converters are required in a variety of applications where devices of different specifications need to be interfaced with each other. DC Isolating Converters are designed to suit such applications with the additional advantage of Electric Isolation. These Devices have all the virtues of Isolators like Electrically Isolating any two Devices and Protecting the Drive / DCS / PLC Cards from Wrong Connections, Excess Voltage and Ground Looping, also from Electro agnetic Interference (EI), Harmonic Distortion and RF Noise, caused by switching of Inductive Loads and other Electrical Disturbances. A must in all PLC and DCS Panels it protects your expensive circuitry at the same time ensures true and stable readings at all times. Datasheet: Common General Specifications Shape : Rectangular aterial : ABS Dimensions (mm) : Length: 107.5, Height: 75mm; Width: Varies as per odel and is specified in product coding information. ounting : Din Rail ounted. Ingress Protection : IP 40, Shock and Contamination Proof. Flammability : Class V0 according to UL 94. Specifications which vary with Series: A Series Ambient Temperature -20 C to 55 C Power Supply Power Consumption : For all Isolation Products is less than 1W Power Supply Voltage : 16 to 36 VDC. Recommended 24 VDC. Power Supply Side Isolation : 3 Point Isolation. Rail Power Supply of 24 VDC is internally isolated from Input and Output Circuitry. Protection Reverse Voltage Protection. Signal Isolation Isolation Barrier Voltage : Root ean Square (RS) Voltage 5 KV rms Isolation Type : Isolation Technology used Optical Input and Output Input Signal : DC Current: 4 to 20 ma DC Voltage: 0 to 10 VDC DC Voltage: -10 to 10 VDC DC Voltage: Bipolar milli Volt Resistance Potentiometer: 1 K-Ohms Input Loop Voltage Drop : 4-20mA Input circuits, voltage drop (VDC) 5 Input and Output Side Reverse Loop Protection. Protection EI Filtering and Protection RFI Filtering Output Signal DC Current: 4 to 20 ma DC Voltage: 0 to 10 VDC DC Voltage: -10 to 10 VDC aximum Load Permissible Value at 24 VDC Power Supply. 650 Ohm for Current Output aximum Non-linearity Value with respect to Full Scale Range at ± 0.1% maximum ambient temperature. Output Calibration Linearity trim set on fascia Slope Adjust. Page 5 of 9
Product Code: A-ISO-DC-V1-C1-S Product Code: A-ISO-DC-B1-C1-S Product Code: A-ISO-DC-C1-V1-S (V TO I) VOLTAGE TO CURRENT BIPOLAR VOLTAGE TO CURRENT (I TO V) CURRENT TO VOLTAGE Product Code: A-ISO-DC-C1-B1-S Product Code: A-ISO-DC-1-C1-S Product Code: A-ISO-DC-R1-C1-S CURRENT TO BIPOLAR VOLTAGE BIPOLAR ILLI-VOLT TO CURRENT (R TO I) RESISTANCE TO CURRENT Isolating DC Signal Converters Ordering Information Product Code (PC) Product Description A-Series A-ISO-DC-C1-V1-S : Isolating DC Signal Converter Current to Voltage. A-ISO-DC-V1-C1-S : Isolating DC Signal Converter Voltage to Current. A-ISO-DC-C1-B1-S : Isolating DC Signal Converter Current to Bipolar Voltage. A-ISO-DC-B1-C1-S : Isolating DC Signal Converter Bipolar Voltage to Current. A-ISO-DC-1-C1-S : Isolating DC Signal Converter Bipolar milli-volt to Current. A-ISO-DC-R1-C1-S : Isolating DC Signal Converter Resistance to Current. Product Coding (PC) Information: Item Description Item Code Item Specification Product Description A-ISO A-Series Isolator Power Supply DC Power Supply Voltage 24 VDC. Input / Output C V B R Channels 1 Single Channel S Decoding the Product Code Input or Output DC 4 to 20mA. Input or Output 0 to 10 VDC. Bipolar Voltage Input or Output -10 to 10 VDC. Bipolar milli-volt Input -1000mV to 1000 mv (Standard Range. Other ranges maybe specified while ordering). Resistance Potentiometer Standard 22.5mm Width. edium 45mm Width. Page 6 of 9
Application Notes: Application Notes are intended to throw light on Good Automation Practices. In spite of having Good Control Systems as in PLC or DCS and Field Instruments of Reputed makes, if an Automation System doesn t deliver good results or the Integrator faces problems in commissioning the system, then Common istakes in Integrating Automation Systems are to blame. Proper use of Isolation Products may eliminate many of these problems. Some Basic Precautions to be taken while designing an Automation System: 1. Never use common power supply for Field and Controller, this will render all signal isolation useless as the grounding will be common. 2. Never connect the Field Side Ground to the Controller Side Ground. 3. Wherever possible use separate earth pits for Field and Controller. The distance between any two earth pits should be a safe 10 mt. 4. It is advisable to have the Isolators fitted in the DCS / PLC Panel so that the System as a whole is Electrically Isolated. Also use an Isolation Transformer to isolate the Power from mains. 5. If you use Isolation for Analog I/Os and connect any one of the Digital I/Os directly to any field Coil then the whole Isolation will be rendered useless as the controller s internal earthing will be connected to the field side. You may avoid doing this by using Optical Isolation or Relay Banks and keeping the field side Electrical Connections separate. 6. Use Shielded and Twisted Pair of Cables for Analog I/Os as this will minimize noise pick up. 7. If using a ulti-core Cable, make sure that AC Power and Field Signals are not carried in the same cable, use different cables for these. So far as possible use separate cables Analog (ulti-strand, Twisted Pair, Shielded) and Digital (ulti-core) Signals. DC Current Isolator: 4-20mA DC Current Input will be filtered and isolated 4-20mA DC Current. Application Diagram below shows a Signal from Variable Frequency Drive (VFD used for otor Speed Variation) being Isolated and given as input to PLC. Similarly PLC Out can be given as input to VFD as external speed reference. DC Current Isolator with Built-in Auxiliary Power Supply is a very useful tool for Two-Wire Transmitter Loop connections. Diagrams given below throw light on Isolator usage. Single Loop Splitter (With Auxiliary Output Channel) also called Single Input Dual Output Isolator: Single Input and Dual Output. 4-20mA DC Current Input will be filtered and isolated 4-20mA DC Current in two separate and independent channels. Application Diagram shows a Flowmeter Signal being Isolated and given out as two independent signal replicas. One Signal goes to PLC / DCS and the other goes to Overhead or Jumbo Display. Similarly a Quad Output Isolator will generate four input replicas as four isolated outputs. Dual Channel Current Isolator: This product features two independent Channels in the same 22.5mm thick enclosure. This is a huge space saver as it fits two Barriers in place of one and can be used as Input Isolator in any Automation Panel. The Input is loop powered while the Output is powered from the PLC / DCS Side Power Supply. The figure elaborates on how DIDO Isolator can be used to Isolate a Sourcing Current from a agnetic or Coriolis ass Flowmeter and a Two Wire Current Signal from a Pressure Transmitter at the same time. Controller Side Power Supply powers the Output Circuitry thus Electrically Isolating Field Side from Controller Side. DC CURRENT ISOLATOR ISOLATES FIELD SIDE FRO CONTROLLER I/O SIDE. VOLTAGE ISOLATOR CAN BE SIILARLY CONNECTED DC CURRENT ISOLATOR WITH AUXILIARY POWER SUPPLY TO POWER 2S TRANSITTER - SINGLE INPUT SINGLE OUTPUT Page 7 of 9
DC CURRENT ISOLATOR / SPLITTER - SINGLE INPUT DUAL OUTPUT USED FOR TRANSITTING THE SAE SIGNAL TO TWO DIFFERENT LOCATIONS DC CURRENT ISOLATOR DUAL CHANNEL SAVES SPACE AND ONEY AS CHANNELS ARE ACCOODATED IN SPACE OF ONE DC Voltage Isolator: DC Voltage Isolator electrically isolates and repeats incoming DC Voltage Signal which maybe Unipolar, Bipolar or in milli-volt range. And can be used in to connect two devices while Electrically Isolating them. Some devices especially old devices have Bipolar Voltages as Input or Output Signals typical example is a Heenan Coupling which is type of Eddy Current Drive used for Speed Variation. Bipolar Voltage Isolator is an excellent device to isolate such devices and yet take them in control loops. Similarly many Sensors and Devices may have Unipolar or Bipolar milli-volt Outputs. ost of these can be connected to the milli-volt range Voltage Isolator or milli-volt to Current Converter. any Units have DC Tacho-Generators and a DC Voltage Isolator is a perfect tool for taking these devices in control loop. DC Current to Voltage (I to V) Isolating Converter: 4-20mA DC Current Input will be filtered, isolated and converted to 0-10 VDC Signal. The application diagram shows a typical scenario where a VFD has 0-10 VDC input facility for motor speed control as external speed reference and this has to be connected to a PLC / DCS having a 4-20mA analog output card. I to V converter will be a perfect solution for this situation. DC Voltage to Current (V to I) Isolating Converter: Typical application where 0-10 VDC Input will be filtered, isolated and converted to 4-20mA DC Current. The application diagram shows a typical scenario where a VFD has 0-10 VDC output for motor speed output and this has to be connected to a PLC / DCS having a 4-20mA analog input card. V to I converter is a perfect solution for this situation. Where intended signal is acquired without any change or deformation. DC Voltage Isolator can also be used directly with DC Tacho Generator whose DC Voltage Signal which is typically 0-100VDC can be connected to the Isolator Input and a 4-20mA Output can be used for Control Application, this product has to be pre-ordered. Resistance Converter: This product has multiple usages the product comes with a standard calibration for 0-1K- Ohms Resistance as input. Any change in this Resistance Value can be communicated during ordering for us to calibrate the device suitably. It can be used as a anual Interface from a remote location to VFD for Speed Variation this will totally Isolate the system from any Electrical Interference. An example of this is shown below. A few examples of how these products can used are illustrated below. ISOLATING DC V TO I CONVERTER USED TO SENSE SPEED WITH DC TACHO GENERATOR DC I TO V CONVERTER USED WHERE CONTROLLER CURRENT OUTPUT IS GIVEN TO DRIVE VOLTAGE INPUT Page 8 of 9
RESISTANCE CONVERTER USED IN A VFD DRIVE FOR ANUAL TRIING THE SCHEE USES A CURRENT ISOLATOR FOR ISOLATING THE AUTO SIGNAL AND AN AUTO ANUAL STATION FOR SIGNAL SELECTION IN THIS WAY A COPLETE ELECTRICAL ISOLATION IS ACHIEVED Page 9 of 9