◎ 可控硅移相觸發(fā)器模塊 (SCR-JKK，TRIAC-JKK)
THYRISTOR PHASE-SHIFT TRIGGER MODULE (SCR-JKK, TRIAC-JKK)
◆ 可控硅移相觸發(fā)器模塊分單向可控硅移相觸發(fā)器模塊(SCR-JKK) 和雙向可控硅移相觸發(fā)器模塊 (TRIAC-JKK)。
◆ 可控硅移相觸發(fā)器模塊的原理是 : 以電網(wǎng)相位為同步 , 當(dāng)改變控制電壓的大小 , 內(nèi)部便產(chǎn)生相對電網(wǎng)電壓180° ~0°的觸發(fā)脈沖 , 通過光電隔離 , 輸出端 (A, G)便觸發(fā)相應(yīng)的可控硅導(dǎo)通 , 從而達(dá)到移相調(diào)壓的目的。
◆ 移相觸發(fā)器的控制部分由于與輸出觸發(fā)端光電隔離 ,因而可以用手動或者自動兩種控制方式 . 在應(yīng)用中只需提供 18VAC 的電網(wǎng)同步電壓 , 電極以插片連接 , 使用極為方便。
◆ SCR-JKK 和 TRIAC-JKK 按控制信號不同 , 分為以下規(guī)格 ( 型號表 ):
◆ The thyristor phase-shift trigger module can be divided into the SCR thyristor phase-shift trigger module (SCR-JKK) and the TRIAC thyristor phase-shift trigger module (TRIAC-JKK).
◆ The principle of the thyristor phase-shift trigger module is: The phase of the power grid will be taking as the synchronization reference, and by change the magnitude of the control voltage, a phase-shiftable trigger pulse signal (which can be shifted from 180° to 0° relative to the voltage phase of the power grid) will be generated in the module, and then this signal will be sent to the output terminal (A, G ports) by the optical isolation method to trigger the corresponding thyristors to achieve the purpose of phase-shift and voltage- regulation.
◆ The control part of the phase-shift trigger is optically isolated from the output terminal of the trigger, so it can be controlled manually or automatically. In the application, it only needs to provide 18VAC voltage synchronized with the power grid, and the electrodes are connected by inserts, which make the thyristor phase-shift trigger module extremely convenient to use.
◆ According to different control signals, SCR-JKK and TRIAC-JKK can be divided into four types: E, F, G, and H types. The following is the specification model table.
為方便說明 , 下面以 0~5V 控制信號為標(biāo)準(zhǔn)作介紹 ( 型號簡稱 SCR-JKK 和 TRIAC-JKK)
For convenience of explanation, the following introduces with the 0~5V control signal as a standard (Model: SCR-JKK and TRIAC-JKK)
◎ 移相觸發(fā)器的引腳功能
The port functions of the phase-shift trigger:
①②腳接同步變壓器的副邊繞組 (18VAC), 供給移相觸發(fā)器電源和同步基準(zhǔn) ;
③腳接可控硅的觸發(fā)門極 ;
④腳接單向可控硅的陽極或雙向可控硅的主電極 T1;
⑤腳為內(nèi)部地 , 當(dāng)移相觸發(fā)器由外電路自動控制時(shí) , ⑤腳與外電路地相連 ;
⑥腳為控制端，當(dāng)⑥腳輸入有 0.5V 電壓信號時(shí)，③④腳控制觸發(fā)的可控硅便在 180° -0°范圍內(nèi)移相導(dǎo)通；
⑦腳為模塊內(nèi)部產(chǎn)生的 +5V 電壓端 , 當(dāng)⑤⑥⑦腳外接電位器手動控制時(shí) , ⑦腳提供電源 , 當(dāng)外電路提供控制信號時(shí) , ⑦腳懸空。
The ① and ② ports are connected to the 18VAC secondary winding of the synchronous transformer to offer the power supply and the synchronous reference for the phase-shift trigger;
③ port is connected to the trigger gate of the thyristor;
④ port is connected to the anode of the SCR thyristor or the main electrode T1 of the TRIAC thyristor;
The ⑤ port is the internal common ground terminal. If the phase-shift trigger is controlled by the external automatic control circuit, the ⑤ port will be connected to the ground of the external control circuit;
The ⑥ port is the control terminal. When there is a 0.5V voltage signal inputted to the ⑥ port, the thyristor on the ③ and ④ ports will be triggered in the phase-shift range of 180° ~0° ;
The ⑦ port is the +5V voltage terminal generated inside the module. If the ⑤ , ⑥ , ⑦ ports are connected to the external potentiometer to apply the manual control method, the ⑦ port acts as the power supply for it; if the control signal is provided by external control circuit to apply the automatic control method, the ⑦ port should be left floating.
◎ 應(yīng)用電路 Application circuit
◎ 控制電壓 U CON 與可控硅輸出導(dǎo)通角 α 關(guān)系曲線 ( 阻性負(fù)載 ) 及波形圖
The relationship and waveform of the control voltage U CON and the conduction angle α of the thyristor (when resistive load)
◎ 移相觸發(fā)器的功能和技術(shù)參數(shù)
Related technical specifications and precautions
1.CON 對 COM 必須為正 , 如極性相反則輸出端失控( 全開或全閉 ). 當(dāng)控制端 CON 從 0~5V 改變時(shí) , 交流負(fù)載上的電壓從 0V 到最大值可調(diào) ( 對阻性負(fù)載而言 ). 其中 CON 在 0~0.8V 左右時(shí)為全關(guān)閉區(qū)域 , 能
可靠關(guān)斷模塊的輸出 ; CON 在 0.8V~4.6V 左右為可調(diào)區(qū)域 , 即隨著控制電壓的增大 , 導(dǎo)通角 α 從 180°到 0°線性減小 , 交流負(fù)載上的電壓從 0V 增大到最大值 ; CON 在 4.6V~5V 左右時(shí)為全開通區(qū)域 , 交流負(fù)載上的電壓為最大值 ( 接近電網(wǎng)電壓 )。
2.CON 對 COM 的輸入阻抗分 E, F 和 H 型均為大于等于 30KΩ; G 型為 250Ω。
3. 移相觸發(fā)器均可使用在 100~420VAC, 50Hz 的電網(wǎng)上 (100V 以下可定制 )。
4. ①②腳接同步變壓器次級繞組 , 電壓值允許在18VAC±5VAC 范圍內(nèi) , 功率 2W 即可。
5. ⑦腳的 +5V 電壓信號只提供給手控電位器用 , 不做他用 , 所選用的電位器阻值 , 要求在 2~10KΩ. 注 :4~20mA 的 G 型不能用電位器手動調(diào)節(jié) , 此時(shí) +5V端也沒有任何用處。
6. 移相觸發(fā)器模塊可以觸發(fā) 1000A 以內(nèi)可控硅 ( 注意觸發(fā)端接法 )。
7. 移相觸發(fā)器本身發(fā)熱很小 , 不需另外散熱。
1.CON must be positive relative to COM, and if the polarity is opposite, the output terminal will be out of control (fully open or fully closed). When the control terminal CON changes from 0V to 5V, the voltage on the AC load can be adjusted from 0V to the maximum value (for resistive loads). When the control voltage on CON is around 0V~0.8V (Fully-closed Region), the control signal can reliably shut down the output of the module. When the control voltage on CON is around 0.8V~4.6V (Adjustable Region), the conduction angle α decreases linearly from 180° to 0° as the control voltage increases, and the voltage on the AC load increases from 0V to the maximum value. When the control voltage on CON is around 4.6V~5V (Full-open Region), the voltage on the AC load is the maximum value (close to the power grid voltage).
2. The input impedance between CON and COM is divided into E, F and H type (the impedance of these three types are greater than or equal to 30KΩ), and G type (the impedance is 250Ω).
3.The phase-shift trigger module can be applied to 100~420VAC, 50Hz power grid (below 100V can be customized).
4. ① and ② ports are connected to the secondary winding of the synchronous transformer, which allows a voltage of 18VAC ± 5VAC and a power of 2W.
5. The +5V voltage signal on 7 port is only provided for the manual potentiometer (the selected resistance is between 2~10KΩ), not for other uses. Note: The G type (4~20mA as control signal) cannot be manually adjusted by the potentiometer, so the +5V port is useless for the G type.
6. The phase-shift trigger module can trigger thyristors within 1000A current (please pay attention to the connection method of the trigger terminal).
7. The phase-shift trigger itself generates very little heat and does not require additional heat dissipation.
◎ 可控硅移相觸發(fā)器模塊外形尺寸圖
The overall dimensions of the thyristor phase-shift trigger module
