4-20mA Transmitter Receiver - FORBIX SEMICON, Electronics
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1. 4 20mA Transmitter Receiver Apr 2013 FORBIX SEMICON Bangalore India Please feel free to give feedback through sales forbixindia com FO R B X S E M i co N 4 20mA Current Loop Transmitter Receiver NOTICE FORBIX SEMICON reserves the right to make corrections modifications enhancements improvements and other changes to its products and services at any time and to discontinue any product or service without notice Customers should obtain the latest relevant information before placing orders and should verify that such information is current and complete All products are sold subject to FORBIX SEMICON s terms and conditions of sale supplied at the time of order acknowledgment Information contained in this publication regarding device applications is provided only for customer s convenience and may be superseded by updates It is solely customer s responsibility to ensure that the application meets the desired specifications To minimize the risks associated with customer products and applications customers should provide adeguate design and operating safeguards FORBIX SEMICON MAKES NO REPRESENTATIONS OR WARRANTIES OF ANY KIND WHETHER EXPRESS OR IMPLIED WRITTEN OR ORAL STATUTORY OR OTHERWISE RELATED TO THE INFORMATION INCLUDING BUT NOT LIMITED TO ITS CONDITION QUALITY PERFORMANCE MERCHANTABILITY OR FITNESS FOR PURPOSE FORBIX SEMICON does not warrant or represent that any license either express or implied2. is granted under any FORBIX SEMICON copyright mask work right or other FORBIX SEMICON s intellectual property right relating to any combination machine or process in which FORBIX SEMICON products or services are used Information published by FORBIX SEMICON regarding third party products or services does not constitute a license from FORBIX SEMICON to use such products or services or a warranty or endorsement thereof Reproduction of FORBIX SEMICON information in FORBIX SEMICON data books or data sheets is permissible only if reproduction is without alteration and is accompanied by all associated warranties conditions limitations and notices Reproduction of this information with alteration is an unfair and deceptive business practice FORBIX SEMICON is not responsible or liable for such altered documentation Information of third parties may be subject to additional restrictions Resale of FORBIX SEMICON products or services with statements different from or beyond the parameters stated by FORBIX SEMICON for that product or service voids all express and any implied warranties for the associated FORBIX SEMICON product or service and is an unfair and deceptive business practice FORBIX SEMICON is not responsible or liable for any such statements FORBIX SEMICON products are not authorized for use in safety critical applications such as life support where a failure of the FORBIX SEMICON product would reasonably be expected to cause severe perso
3. 4VDC Sensor Supply EXTERNAL SHORTING OF GROUND TERMAL IS MANDATORY The 0 20MA or 4 20mA current flowing through the sensor is captured by the internal precision resistor of the RF transmitter unit The running current poses a potential drop across the resistor that is sampled by the internal circuits and the value is then transmitted over air to the receiver The transmitter unit has 2 LEDs for indication Yellow Power ON indication Red Transmission indication cra FO RB X S EM CO N 4 20mA Current Loop Transmitter Receiver Connection Diagram for the receiver Connection diagram of the receiver unit RF Receiver 12VDC GND SIGNAL IN 6 to 24VDC Sensor Supply SIGNAL OUT Once the signal is captured by the receiver the digital signals are converted to analog current output that flows through the 0 20mA detector The current through the detector is same as the current captured at the transmitter flowing through the 2 wire sensor Yellow Power ON indication Red Reception indication rc FO RB X S EM CO N 4 20mA Current Loop Transmitter Receiver Dimension EAST VIEW _ race FO R B X S E M i co N 4 20mA Current Loop Transmitter Receiver Safety Instructions Information for Your Own Safety This manual does not contain all of the safety measures for operation of this equipment module or device because special operating conditions local code requirements or loca
4. c shock and failure to take the necessary safety precautions will result in death serious injury or considerable material damage This equipment DOES NOT CONTAIN HAZARDEOUS VOLTAGE AND IS SAFE TO OPERATE ee FO R B X S E M i co N 4 20mA Current Loop Transmitter Receiver Operating Temperature Operating temperature of the system is 10 C to 60 C Beyond this temperature there is a possibility that the radio circuits will drift from actual function specifications Store in cool and dry place Qualified personnel Installation and operation of this equipment described in this manual may only be performed by qualified personal Only people that are authorized to install connect and use this equipment and have the proper knowledge about labelling and grounding electrical equipment and circuits and can do so according to safety and regulatory standards are considered gualified personnel in the manual MAKING IMPROPER CONNECTIONS MAY LEAD TO MACHINE FAILURE OR BURN OUT Read instructions carefully before installation Battery Replacement If the machine contains batteries then remove the batteries when the system is not expected to be used for more than 2 3 months DO NOT recharge the batteries keeping them connected to the machines Replace dead expired batteries immediately Use for the intend purpose The eguipment device module may only be used for the application cases specified in the Catalogue and the user manual and o
5. er The far end receiver captures the wireless signals and converts it back to current values similar to the transmitter The transmitter uses FBXMR12 FBXMR23 RF modules The receiver unit used FBXMR12 receiver module FBXMR23 is high power transmitter unit and FBXMR12 is medium power transmitter unit FBXMR12 also serves as receiver unit Details of FBXMR23 at http www forbixindia com docs FBXMR23 pdf Details of FBXMR12 at http www forbixindia com docs FBXMR12 pdf The complete module information viz operating frequency operating voltage modes of operation are available in the above documents gt M DUST FO RB X S EM CO N 4 20mA Current Loop Transmitter Receiver Internal Architecture of the Transmitter The transmitter consists of 4 main components 1 Current to voltage converter 2 Analog voltage to digital data 10 bit ADC 3 Wireless packet formatter 4 RFtransmitter Resistor Converter Packet Transmitter Formatter Internal Architecture of the Receiver The receiver consists of 4 main components 1 Wireless RF receiver 2 Packetde formatter 3 Data packets to voltage converter 4 Voltage to current converter Wireless Voltage RF Packet Voltage Receiver DAC to Current De formatter converter sr FO RB X S EM CO N 4 20mA Current Loop Transmitter Receiver Connection Diagram for the transmitter Connection diagram of the transmitter unit RF Transmitter SIGNAL OUT 6 to 2
6. l regulations may necessitate further measures However it does contain information which must be adhered to for your own personal safety and to avoid damage to the equipment This information is highlighted by a warning triangle with an exclamation mark or a lightning bolt depending on the severity of the warning After removing the packaging make sure the integrity of the unit If in doubt don t use the eguipment and contact technical staff If this machine reguired electrical installation then mounting of electric appliances must be carried out only by skilled electricians It is imperative to observe the generally applicable safety measures In case of failure and or malfunctioning of the device turn off it For any repair only contact technical staff Failure to comply with the above may compromise the device safety Radio Antenna If the machine contains radio antenna then NEVER DISMANTLE OR UNWIND THE ANTENNA FROM THE SYSTEM especially when the machine powered ON It will permanently damage the radio controller and RF circuits Physical Damage Our electronic machines are fragile Do not drop the system on hard floor or surface It would cause physical damage to the enclosure and internal circuits Warning Means that failure to observe the instruction can result in death serious injury or considerable material damage This equipment DOES NOT CONTAIN HAZARDEOUS VOLTAGE AND IS SAFE TO OPERATE Caution Means hazard of electri
7. nal injury or death Buyers represent that they have all necessary expertise in the safety and regulatory ramifications of their applications and acknowledge and agree that they are solely responsible for all legal regulatory and safety related requirements concerning their products and any use of FORBIX SEMICON products in such safety critical applications Further Buyers must fully indemnify FORBIX SEMICON and its representatives against any damages arising out of the use of FORBIX SEMICON products in such safety critical applications FORBIX SEMICON products are neither designed nor intended for use in military aerospace applications Buyers acknowledge and agree that any such use of FORBIX SEMICON products is solely at the Buyer s risk and that they are solely responsible for compliance with all legal and regulatory requirements in connection with such use rare FO RB X S EM CO N 4 20mA Current Loop Transmitter Receiver 4 20mA Transmitter Receiver Units FORBIX ELECTRONIC A oul d PORDE SECON O M FORBIX SEMICON 4 20mA Current Loop Transmitter Receiver Introduction 4 20mA transmitter receiver system works on the principle of converting analog signals to wireless RF communication protocol The input current within limits of 0 20mA is converted linearly to analog voltage The analog voltage is then converted to 10 bit ADC value The 10 bit value is then encoded packetized and sent over air to corresponding receiv
8. nly in connection with devices and components recommended and approved by FORBIX SEMICON Exclusion of liability We have checked the contents of this publication and every effort has been made to ensure that the descriptions are as accurate as possible However deviations from the description cannot be completely ruled out so that no liability can be accepted for any errors or omissions in the information given The data in this manual is checked regularly and the necessary corrections will be included in subseguent editions If you have any suggestions please let us know via email at sales forbixindia com For any other information visit our website http www forbixindia com ee
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