Catalog excerpts
DC/DC ConverterHK_S Series Single output, specially designed for application of intelligent passive transmitter Patent Protection RoHS FEATURES • Specialized for power supply of two-wire loop application • High output current up to 3.5mA • Isolation voltage: 1.5K VDC • Operating temperature range: -40°C to +85°C • International standard pin-out HK_S series is specialized for applications of two-wire signal and HART transmission, it can solve a series of problems, such as, the signal transmission errors around 3.5~20mA, followed by the interruption of HART communication or damage to equipment port device, which are caused by the ground potential difference with different ground loops. HK_S series supply power through the loop, so that It can eliminate transmission errors caused by electric potential difference and ensure the accuracy of the communication transmission. General Specifications Item MORNSUN GUANGZHOU 5CIGNCG & TGCHNOLOGY CO.,LTD. MORNSUN Guangzhou Science & Technology Co., Ltd. reserves the copyright and right of final interpretation
Open the catalog to page 1DC/DC ConverterHK_S Series Physical Specifications EMS ESD IEC/EN61000-4-2 Contact ±8KV perf. Criteria B Design Reference 1. Ground Loop Problem In Signal Transmission And Ground Electric Potential Difference There are many reasons causing ground loop problem in instrument circuit, when the signal transmission and receiving devices connected to different location or different power supplies, it will lead to ground loop, which is common in long cable transmission. Most of the reason is that the equipment of the metal shell had physical contact with the ground, so that ground loop...
Open the catalog to page 2DC/DC Converter HK_S Series In the circuit of fig. 1, Sensor signal is converted into digital signals through the ADC, then sent to the current loop DAC and HART modulator through MCU, and form 3.5~20 mA signal output. Current loop DAC get power supply from the PLC bus of output 3.5~20 mA, and output 3.3 V and 2.5 V through the built-in voltage regulator, supply a small amount of power for MCU and HART modulator. In the transmission of fig. 1, there are ground electric potential differences between two-wire system instrument and PLC on the far side, causing the common mode interference. The...
Open the catalog to page 3DC/DC Converter HK S Series MORNSUNDimensions and Recommended Layout Notes: 1. Packing information please refer to Product Packing Information which can be downloaded from www.mornsun-power.com. Packing bag number: 58200003; 2. If the product is not operated within the required load range, the product performance cannot be guaranteed to comply with all parameters in the datasheet; 3. The maximum capacitive load offered were tested at input voltage range and full load; 4. Unless otherwise specified, parameters in this datasheet were measured under the conditions of Ta=25"C, humidity<75%RH...
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