◎ 全隔離單相交流調(diào)壓模塊 (DTY)
FULL ISOLATION SINGLE PHASE AC
VOLTAGE REGULATOR MODULE (DTY)
◆ 全隔離單相交流調(diào)壓模塊（以下簡稱單相調(diào)壓模塊DTY）是集同步變壓器、相位檢測電路、移相觸發(fā)電路和輸出可控硅于一體，當(dāng)改變控制電壓的大小，就可改變輸出可控硅的觸發(fā)相角，即實(shí)現(xiàn)單相交流電的調(diào)壓。根據(jù)輸出可控硅器件不同分一只雙向可控硅的普通型，兩只單向可控硅反并聯(lián)的增強(qiáng)型和一只單向可控硅的半波型等三類。按單相交流負(fù)載的額定電壓分 220V 和380V 兩類，按控制信號(hào)的不同分 E、F、G、H 型等四類，以下為規(guī)格型號(hào)表（注：電流等級(jí)為模塊內(nèi)部可控硅最大電流有效值）
為方便說明，下面以 0-5V 控制信號(hào)為標(biāo)準(zhǔn)作介紹（型號(hào)簡稱 DTY）：
◆ ①②為輸出端 , 即模塊內(nèi)部可控硅的兩極 . 增強(qiáng)型和普通型的①②端無極性 , 半波型模塊內(nèi)部單向可控硅的陽極接①端 , 陰極接②端。
◆ ③④為模塊內(nèi)部同步變壓器初級(jí) , 分 220VAC 和380VAC 兩種規(guī)格 : 220VAC 規(guī)格允許使用在 165-240VAC 范圍的電網(wǎng)上 , 380VAC 規(guī)格的模塊允許使用在 285-420VAC 的電網(wǎng)上 , ③④不分極性。
◆ COM 為內(nèi)部接地端 , CON 為控制端 , +5V 為內(nèi)部產(chǎn)生 , 只供電位器手動(dòng)控制用 , ①②③④的強(qiáng)電部分和 +5V,CON, COM 的弱電部分為全隔離 . 應(yīng)用電路如下圖所示 :
◆ The full isolation single phase AC voltage regulator module (hereinafter referred to as the single phase voltage regulator module DTY) integrates the synchronous transformer, the phase detection circuit, the phase-shift trigger circuit and the thyristor output circuit. The trigger angle (firing angle) of the thyristor can be controlled by changing the control voltage, that is, to regulate the single phase AC output voltage. According to the different types of the thyristor, the single phase oltage regulator module DTY can be divided into three types: ordinary type (one TRIAC as the output component), enhanced type (a pair of reverse-parallel SCR as the output component) and a half-wave type (one SCR as the output component). According to the rated voltage of single phase AC load, the single phase voltage regulator module DTY can be divided into 220V type and 380V type. According to different control signals, the single phase voltage regulator module DTY can be divided into four types: E, F, G, and H types. The following is the specification model table (Note: The current grade in this table is the maximum rms current of the internal thyristor of the module).
For convenience of explanation, the following introduces with the 0~5V control signal as a standard (Model: DTY):
◆ ① and ② ports are the output terminals of the module (i.e., the two poles of the thyristor inside the module). ① and ② ports of the enhanced and the ordinary type have no polarity. The anode of the SCR thyristor inside the half-wave type module is connected to the ① port, and the cathode is connected to the ② port.
◆ ③ and ④ ports are the synchronous transformer primary inside the module, and the specification can be divided into 220VAC type and 380VAC type: 220VAC type can be used into the power grid at the range of 165-240VAC, 380VAC type can be used into the power grid at the range of 285- 420VAC. ③ and ④ ports have no polarity.
◆ COM port is the internal common ground terminal, CON port is the control terminal, and the +5V port is the power supply generated inside the module only for the manual control of potentiometer. The strong current part ( ① , ② , ③ , and ④ ports) and the weak current part (+5V, CON, ,,,,,,,,,,,,and COM ports) are fully isolated. The application
circuit is shown below:
◎ 有關(guān)技術(shù)指標(biāo)及應(yīng)注意的問題
Related technical specifications and precautions
1、通過①②加在負(fù)載上的電壓相位和③④端的電壓相位必須一致，否則失控。電網(wǎng)頻率須為 50Hz。
2、CON 對(duì) COM 必須為正，如極性相反則輸出端失控（全開或關(guān)閉）。當(dāng)控制端 CON 從 0-5V 改變時(shí)，交流負(fù)載上的電壓從 0 伏到最大可調(diào)（對(duì)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，可靠關(guān)斷模塊的輸出；CON 在 08V-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∝從 180°到 0°線性減小，交流負(fù)載上的電壓從 0 伏增大到最大值；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。
3、CON 對(duì) COM 的輸入阻抗分 EF 和 H 型均為大于等于 30K 歐；G 型為 250 歐。+5V 電壓信號(hào)只提供給手控電位器用，不作它用，所選用的電位器阻值在2-10KΩ間，注：4-20mA 的 G 型不能用電位器手動(dòng)調(diào)節(jié)，些時(shí) +5V 端也沒有用處。
4、單相交流異步電動(dòng)機(jī)的調(diào)速原則上應(yīng)采用變頻器，只有風(fēng)機(jī)類、水泵類單相電機(jī)在要求不高的場合可采用單調(diào)壓模塊。
5、三只單相調(diào)壓模塊不能使用在三相電網(wǎng)上對(duì)三相負(fù)載調(diào)壓。
6、弱電部分、強(qiáng)電部分、模塊底板互相之間絕緣電壓均大于 2000VAV。
7、整個(gè)模塊的發(fā)熱量按負(fù)載實(shí)際電流安倍數(shù)乘 1.5 瓦 /安倍計(jì)算，散熱器可選用 MG-L、MG-H 系列。
8、有關(guān)電流等級(jí)的選取及保護(hù)等有關(guān)使用注意事項(xiàng)請(qǐng)
參考單相交流固態(tài)繼電器說明。
1、 The phase applied to the load through ① and ② ports must be consistent with the phase of ③ and ④ ports, otherwise the device will be out of control. And the frequency of the power grid must be 50 Hz.
2、 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 decreases linearly from 180° to 0° as the control voltage increases, and the voltage on the AC load creases 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).
3.、 The input impedance between CON and COM is 5-99999divided 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). The +5V voltage signal 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.
4、 The speed control of the single phase AC asynchronous motor should be adjusted by the frequency converter, while the single phase voltage regulation module can only be applied to fan motors and pump motors where the requirements are not high.
5、It is not possible to use three single phase voltage regulator modules to regulate the three phase load on the three phase power grid.
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