TW147HL MORNSUN | Alldatasheet
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S ignal conditioning module T W147HL Series 201 A/0 Page of M ORNSUN Guangzhou Science Technology Co., Ltd. reserves the copyright and right of final interpretation Two-wire loop power supply signal conditioning module HART Signal Transmission is available RoHS
FEATURES
H igh linearity (0.1% F.S.) High isolation voltage(2KVAC/1mA/60s) Compact size: SIP9 (26*9.5*12.5mm) Extremely low temperature coefficient: 50ppm/ TYP Operating temperature range: -40 C +85 C HART Signal Transmission is available ESD protection(Bare component 4KV PART NUMBER SYSTEM TW147HL 封装形式 配电电压 配电电流 输入信号 输入信号类型 产品标识 支持 协议 HART TW147HL is a specific signal conditioning module for smart field instruments with HART, The isolation module is designed for transmitting the PWM input signal to output isolated standard 4~20mA through output loop-powered .Meanwhile the module can offer a isolation micro-power for the pre-devices. The module also has an integrated HART signal channel. according to the recommended solutions, it can re alize the Half duplex communication between the field and control area which greatly reduce the wiring cost between the field and the control area. The module adopts unique electromagnetic isolation mode and high performance power feedback. The module achieves the function of transmitting PWM signal to isolated standard 4~20mA accurately, which can match instruments analog input port(such as PLC DCS etc). In addition, this module has small package (SIP9) and excellent temperature drift characteristics (at -40 +85 operating temperature range drift is less than 50PPM This module can bear 2KVAC isolation voltage between the input and output. Selection Guide Part No. Power Supply input Typ. VDC) Input Signal(Duty Cycle) Output Signal(mA) Isolation Power Output (VDC) TW147HL ~24 0~100% 4~20 3.3 Notes: Customization products are available if required. Input Specifications Item Operating Conditions Min. Typ. Max. Unit Power Input Input voltage VDC Input power Single Input and Isolation power output at full load W Power supply protection Single Input Frequency Operating temperature range of -40 to +85 ViH-ViL=3.3V 100 1000 Hz Duty Cycle Operating temperature range of -40 to +85 ViH-ViL=3.3V 100% Edge time 500Hz Ta=25 100 nS PWM amplitude ViH-ViL V Overload Ta=25 V Package HART Signal Transmission is available Output voltage of isolated Output current of isolated Single Input Single Input type Protocol
S ignal conditioning module T W147HL Series 201 A/0 Page of M ORNSUN Guangzhou Science Technology Co., Ltd. reserves the copyright and right of final interpretation Output Specifications Item Operating Conditions Min. Typ. Max. Unit Isolation Power Output Output voltage Output current of isolated power supply full loads Nominal value Nominal value Nominal value V Output Current Operating temperature range of -40 to +85 mA Short circuit protection Ta=25 Continuous short-circuit protection After debugging it resumed normal work Single Output Output signal Reference s election g uide Load capacity Output signal @22mA RL (Vin-Vin(min))/0.022 RL 550 Vin refers to the power supply voltage Vin (min) refers to the nominal minimum supply voltage Load Regulation 24V Power supply, 0~250 Ω load -0.05%F.S./100 Ω 0.05%F.S./100 Ω Ripple noise 20MHz bandwidth Max 250 Ω /0.01 μ F load Ta=25 mVp-p Transmission Specifications Item Operating Conditions Min. Typ. Max. Unit Signal Precision Ta=25 -0.1%F.S. +0.1%F.S. Temperature Coefficient Operating temperature range of -40 to +85 100 PPM/ Response time Ta=25 s Communication Operating temperature range of -40 to +85 S upport HART communication with recommended circuit (Reference the Design Reference General Specifications Item Operating Conditions Min. Typ. Max. Unit Electric Isolation Two- port isolation (signal input and signal output) Isolation voltage testing for minute, leakage current <1mA, humidity <70% KVAC Insulation Resistance 500VDC 100 M Ω Operating Temperature -40 +85 Transportation and Storage Temperature Max Casing Temperature Ta=25 ,24V Power supply, 250 Ω load Application Environment The presence of dust, fierce vibration, impulsion and corrosive gas may cause damage to the product. Physical Specifications Casing Material Black flame-retardant and heat-resistant plastic Package SIP9 Weight g(Typ.) C ooling Method Free air convection EMC Specifications EMS E SD IEC/EN61000-4-2 Contact 4KV perf. Criteria B RS I EC/EN61000-4-3 3V/m perf. Criteria A EFT IEC/EN61000-4-4 Two-wire loop port 2KV (see Fig. for recommended circuit) perf. Criteria B Surge IEC/EN61000-4-5 Two-wire loop port 1KV (see Fig. for recommended circuit) perf. Criteria B CS IEC/EN61000-4-6 Vr.m.s perf. Criteria A Application P recautions
S ignal conditioning module T W147HL Series 201 A/0 Page of M ORNSUN Guangzhou Science Technology Co., Ltd. reserves the copyright and right of final interpretation Please read the instructions carefully before use; contact our technical directly if you have any problem. Do not use the product in hazardous areas. U se DC power supply for the product and 220V AC power supply is prohibited. Do not dismount and assemble the product without permission to avoid failure or malfunction of equipment. A fter-sales service E x-factory inspection and quality control have been strictly conducted for the product; if there occurs abnormal operation or possibility of failure of internal module, please contact the local representative or our technical support. T he warranty period for the product is years as calculated from the date of delivery. I f any quality problem occurs under normal use within the warranty period, the product can be repaired or changed for free. A pplied circuit Please refer to Isolated Transmitter Application Notes Design Reference Typical application Vo+ Si + 0V/Si- Vin GND HART Transmitter Voltage Regurator R Signal Transmitter HART-OUT HART-IN Fig. signal conditioning module functional diagram Product application wiring diagram TW147HL Vi n(1 ) Io(2 ) HART IN(3 ) Vo+(9 ) HART OUT(6 ) Si +(8 )
0 V/Si -(7 )
Ω GND GND PLC DCS VLO OP 2 4VDC 3 .3 V IN( 6) V+(5 ) COM( 4) MCU_PWM 3 .3 V 2 .2 uF A51 91 _RTS NC(3 ) GND(2 ) NO(1 ) 3 .3 V GND0 GND0 A51 91 _TxA Fi lter A51 91 _RxA MCP6 0 01 TS5 A3 15 9 Fig. field area HART communication application
Description
Fig.2 shows a typical application of the Signal conditioning module TWxxxHL. MCU system, HART modem IC A5191 and the signal conditioning module TWxxxHL work together for the communication between smart field devices and control systems Note A5191 chip is a IC from Onsemi with HART modulation and demodulation Signal Access Description: A5191_TxA: Connect A5191 chip TxA pin A5191_RxA: Connect A5191 chip RxA pin A5191_RTS: Connect A5191 chip RTS pin MCU_PWM: Connect MCU chip PWM pin Filter: Filter for receiving Please refer to the technical manual of Onsemi A5191 chip for details if necessary Working principle PWM signal isolation transmission and conversion: PWM signal input into Si+ pin and isolated in the module T hen it outputs mA current in the output side after reduction, filtering, V I conversion. HART signal sending When HART signal is sending it s modulated to FSK signal FSK signal output through A5191 chip TxA pin Because of the weak drive capability of A5191 we use MCP6001 to follow voltage Then we use TS5A3159 as low voltage analog switch A5191 chip RTS pin control the switch When sending HART signal RTS is low level The analog switch NC and COM pin break over In this time FSK signal is sent to HART_OUT pin After isolated FSK signal will be sent to two wire port to finish HART signal sending (When sending HART signal continuously the circuit loss is about 0.6mA, the static loss of about 0.1mA) HART signal detection A5191 chip RTS pin should be high level when detecting HART signal So the analog switch is off now HART signal from two-wire port will
S ignal conditioning module T W147HL Series 201 A/0 Page of M ORNSUN Guangzhou Science Technology Co., Ltd. reserves the copyright and right of final interpretation be coupled with HART_IN pin through the μ F capacitance After isolated the signal is sent to HART_OUT pin (The analog swtich must turn off otherwise HART_OUT pin could not receive HART signal Then through filter A5191 RxA pin can receive HART signal The whole system which shown in Fig.2, provides a solution for the transmitting of the sensor signal to the 4~20mA standard current signal and the HART communication between smart field devices and control systems. what's more, all the connections between field area and control area are only two analog wires. Therefore, lowe r cost for systems is possible. The output of module could match the input of common instruments by sampling resistance RL If the function of HART communicating is not necessary, please remove the HART modem IC A5191 MCP6001 TS5A3159 in the system, and do not connect the HART_IN PIN and HART_OUT PIN of TWxxxHL into any circuits. RL 2 50 Ω TxxxxH L-F HK5S03B L Vin(1) Io(2) HART IN (3) Vo+(9) HART IN (6) Si+(8) 0V/ Si-(7) Vin(1) GN D(2) Vo(6) 0V(4) 3 .3 V 3mA 3 .3 V 9mA ZD 5 V 1 0uF GND GND PLC DCS VLO OP 2 4VDC Fig. Power capacity expansion program of field area Fig.3 shows another typical application of TWxxxHL In order to expand the power supply to field area, a power module HK5S03BL is added into the system. As Fig.3 shows, the capacity of TWxxxHL power supplying is 3mA, By adding HK5S03BL the capacity of power supplying rises to 7mA EMC solution-recommended circuit Fig. Components Recommended parameters MOV1 S07K30 Ω /2W TVS1 SMCJ30A For more information please find the application note s on www.mornsun-power.com
S ignal conditioning module T W147HL Series 201 A/0 Page of M ORNSUN Guangzhou Science Technology Co., Ltd. reserves the copyright and right of final interpretation Dimensions and Recommended Layout Notes: Packing Information please refer to 'Product Packing Information'. Packing bag number: 58240002; Unless otherwise specified, data in this datasheet should be tested under the conditions of Ta=25 humidity<75% when inputting nominal voltage and outputting rated load; All index testing methods in this datasheet are based on our Company s corporate standards; The performance indexes of the product models listed in this datasheet are as above, but some indexes of non-standard model products will exceed the above-mentioned requirements, and please directly contact our technician for specific information; We can provide product customization service; Specifications of this product are subject to changes without prior notice. Mornsun Guangzhou Science Technology Co., Ltd. Address: No. Kehui St. Kehui Development Center, Science Ave., Guangzhou Science City, Luogang District, Guangzhou, China Tel: 86-20-38601850-8801 Fax: 86-20-38601272 E-mail: info@mornsun.cn