Warranty - Company - NOVUS Automation
User Guide for NoVus models including: TxIsoLoop-1, TxIsoLoop-2, TxIsoLoop 1 Loop Powered Isolators, TxIsoLoop 1, Loop Powered Isolators, Powered Isolators, Isolators
File Info : application/pdf, 10 Pages, 434.05KB
DocumentDocumentTxIsoLoop-1 TxIsoLoop-2 Loop-Powered Isolators USER GUIDE V1.0x I NOVUS AUTOMATION 1/10 1. SAFETY ALERTS ...................................................................................................................................................................................................3 2. INTRODUCTION.....................................................................................................................................................................................................4 3. SPECIFICATIONS ..................................................................................................................................................................................................5 4. ELECTRICAL INSTALLATION ...............................................................................................................................................................................6 4.1 ELECTRICAL CONNECTIONS ..................................................................................................................................................................7 4.2 TXISOLOOP-2 SIGNAL SPLITTER FUNCTION .....................................................................................................................................8 4.2.1 ACTIVE CURRENT SIGNAL...........................................................................................................................................................8 4.2.2 PASSIVE CURRENT SIGNAL ........................................................................................................................................................8 4.3 INSTALLATION RECOMMENDATIONS ....................................................................................................................................................8 5. MECHANICAL INSTALLATION ........................................................................................................................................................................9 6. WARRANTY....................................................................................................................................................................................................10 NOVUS AUTOMATION 2/10 1. SAFETY ALERTS The symbols below are used in the device and throughout this manual to draw the user's attention to valuable information related to device safety and use. CAUTION Read the manual fully before installing and operating the device. CAUTION OR HAZARD Risk of electric shock. ATTENTION Material sensitive to static charge. Check precautions before handling. All safety recommendations appearing in this manual must be followed to ensure personal safety and prevent damage to the instrument or system. If the instrument is used in a manner other than that specified in this manual, the device's safety protections may not be effective. NOVUS AUTOMATION 3/10 2. INTRODUCTION TxIsoLoop-1 and TxIsoLoop-2 galvanic isolators are devices used for electrical isolation of 0(4)-20 mA current signals. Its purpose is to avoid measurement errors typically found in installations that have problems with electrical potential difference and ground loops These isolators do NOT require an electrical power supply. The energy obtained by passing the electric current through the insulator input actively generates the output current. Features: · Galvanic isolation between input and output. · Models with one or two input/output channels. · The device does not require a power supply. · High accuracy. NOVUS AUTOMATION 4/10 3. SPECIFICATIONS FEATURES Input signal Voltage drop - Input/output without protection (Vdrop) Voltage drop - Input/output with protection (Vdrop) Output signal Max. load (RL) Total accuracy Minimum operating current Maximum input current Response time Current limit Electrical isolation EMC Work environment Housing Protection index Wire gauge for connections Recommended torque Terminal enclosure TXISOLOOP 0(4) to 20 mA (Check minimum current for proper operation) < 3 Vdc < 5 Vdc 0(4) to 20 mA 1450 R · 0.2 % @ 0 to 60 °C / RL = 250 R · 0.3 % @ -20 to 75 °C / RL = 250 R > 0.1 mA < 40 mA 2 ms @ RL= 250 R 31 mA · 3000 Vac / 10 seconds · 240 Vac continuous EN 61326-1 (without performance degradation) · Temperature: -20 to 75 °C · Relative humidity: 20 to 90 % ABS (60 %) + PC (40 %) IP40 0.14 a 1.5 mm² 0.8 Nm Polyamide Table 1 Technical specifications NOVUS AUTOMATION 5/10 4. ELECTRICAL INSTALLATION To ensure perfect operation of the TxIsoLoop isolator, the circuit where the isolator input is connected must provide a minimum electrical voltage (V1). You can supply the electrical voltage in two ways: 1. The device that generates the current signal is of the active type (source), where it provides the necessary electrical voltage itself. Figure 1 TxIsoLoop connections with source type device With type source devices (transmitters, controllers, etc.), this voltage is provided by the device itself). The minimum voltage value to be supplied by the generator can be calculated using the formula below: V1 = Vin Where: Vin = Vdrop + ( Iout(max) x RL) Iin = Iout 2. With sink type devices (2-wire transmitters), the energy is provided by an external power supply in series in the loop, as shown in Figure 2. Figure 2 Connections on the TxIsoLoop with sink type devices In this option, the inserted source must provide enough voltage to meet the needs of the current generating device (generator, transmitter, controller, etc.) and the isolator. The minimum voltage value to be supplied by the power supply can be calculated using the formula below: V1 = Vb + Where: V1= Voltage from the source inserted into the circuit Vin Vb= Minimum voltage of the generator Vin = Vdrop + ( Iout(max) x RL) Iin = Iout NOVUS AUTOMATION 6/10 4.1 ELECTRICAL CONNECTIONS To configure TxIsoLoop-1, use the following wiring diagram: Figure 3 TxIsoLoop-1 Connections To configure TxIsoLoop-2, use the following wiring diagram: Figure 4 TxIsoLoop-2 Connections NOVUS AUTOMATION 7/10 4.2 TXISOLOOP-2 SIGNAL SPLITTER FUNCTION If needed, TxIsoLoop-2 can be used as a 4-20 mA signal splitter, as shown in the figures below: 4.2.1 ACTIVE CURRENT SIGNAL 4.2.2 PASSIVE CURRENT SIGNAL Figure 5 Active current signal Figure 6 Passive current signal To duplicate the signal, the two outputs of the device must be connected to a load. 4.3 INSTALLATION RECOMMENDATIONS · Input signal conductors must run through the plant separately from the supply and output conductors. If possible, in grounded conduits. · The power supply for the electronic instruments must come from a proper instrumentation network. · In control applications, it is essential to consider what can happen when any part of the system fails. · It is recommended to use RC FILTERS (noise suppressors) at contactor coils, solenoids, etc. NOVUS AUTOMATION 8/10 5. MECHANICAL INSTALLATION The transmitter is intended for a 35 mm DIN rail mounting. Figure 7 Isolator dimensions NOVUS AUTOMATION 9/10 6. WARRANTY Warranty conditions are available on our website www.novusautomation.com/warranty. NOVUS AUTOMATION 10/10