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SCR-210A015U01_SCR-210A012U01_SCR-210A014U01_SCR19Z-M功率控制器OMEGA歐米茄

SCR19系列SCR功率控制器僅用于將電力與電阻負載（如烤箱、熔爐、熱封器等）進(jìn)行比例分配（注：它們不用于驅動(dòng)變壓器或任何感應負載）。

SCR19系列控制器提供兩種比例控制方法-零電壓切換和相位角點(diǎn)火。在零電壓切換模式下，控制器打開(kāi)交流電源電壓的完整循環(huán)。觸發(fā)電路設計為盡可能接近交流正弦波穿過(guò)零點(diǎn)的點(diǎn)打開(kāi)SCR。實(shí)際上，線(xiàn)路電壓是開(kāi)著(zhù)和關(guān)著(zhù)的，并在整個(gè)循環(huán)中施加到加熱器上。

SCR-210A015U01_SCR-210A012U01_SCR-210A014U01_SCR19Z-M功率控制器OMEGA歐米茄

The SCR19 Series SCR Power Controllers are designed to proportion electric power to resistive loads only, such as ovens, furnaces, heat sealers, etc. (NOTE: They are not designed to drive transformers or any inductive load.) 

These heater controllers consist of power semi-conductors (SCRs), properly-sized heat sinks, trigger circuitry, and fuses supplied on panels for surface mounting. The SCR power controller accepts a 4 to 20 mA dc output from a temperature controller or can be supplied with manual option using a remote potentiometer. 

The SCR19 Series controllers offers two methods of proportional control – Zero-voltage-switched and Phase-angled-fired. With the Zero-voltage-switching mode, the controller switches on complete cycles of the ac supply voltage. The trigger circuit is designed to turn on the SCRs as close as possible to the point where the AC sine wave crosses through zero. In effect, the line voltage is turned on and off and applied to the heaters in whole cycles. 

SCR-210A015U01_SCR-210A012U01_SCR-210A014U01_SCR19Z-M功率控制器OMEGA歐米茄

SCR19系列控制器提供兩種比例控制方法-零電壓切換和相位角點(diǎn)火。在零電壓切換模式下，控制器打開(kāi)交流電源電壓的完整循環(huán)。觸發(fā)電路設計為盡可能接近交流正弦波穿過(guò)零點(diǎn)的點(diǎn)打開(kāi)SCR。實(shí)際上，線(xiàn)路電壓是開(kāi)著(zhù)和關(guān)著(zhù)的，并在整個(gè)循環(huán)中施加到加熱器上。

當輸入為4至20 mA時(shí)，Heter控制器的輸出將在4 mA以下關(guān)閉，在20 mA時(shí)完全打開(kāi)。比例作用是通過(guò)改變循環(huán)次數來(lái)實(shí)現的。輸出將從低輸入時(shí)的***個(gè)循環(huán)打開(kāi)和九個(gè)循環(huán)關(guān)閉到***大輸入時(shí)的所有循環(huán)打開(kāi)。

SCR19可控硅功率控制器的輸出由加熱器集成，加熱器產(chǎn)生與輸入信號直接變化的平滑比例熱輸出。在相位角點(diǎn)火模式下，通過(guò)控制全交流正弦波每半個(gè)周期的開(kāi)啟（點(diǎn)火）點(diǎn)來(lái)控制負載功率。