直流離心風(fēng)機設(shè)計要素（中英對照）

　　1、葉輪/Impeller

　　葉輪由塑膠材料PA66，玻纖增強注模制成，材料符合 ROHS 及阻燃UL-V0級。Impeller made of plastic PA66,fiberglass reinforced. All material accord with ROHS and UL-V0

　　2、電機/Motor

　　外轉(zhuǎn)子直流無刷電機。轉(zhuǎn)子上安裝鐵氧體材料，轉(zhuǎn)子外殼表面電泳成黑色，材料符合 ROHS。

　　External rotor brushless DC motor ,Rotor with ferrite and coated in black. All material accord with ROHS

　　3、軟起動/Soft Start

　　電機開始在低轉(zhuǎn)速起動，大約20秒到達(dá)全速，以防止來自電源的電流沖擊。The motor start at low speed,after 20 SEC running to full speed, to prevent current surges being drawn from the power supply

　　4、速度輸出信號/Speed output signal

　　風(fēng)扇輸出一個與外接上拉電阻成比例的速度信號，風(fēng)機每旋轉(zhuǎn)一周，這個信號包含3個脈沖輸出，信號最大幅值電壓為12V。

　　The fan provides an output signal proportional to its speed with out pull up resistor. The signal comprises of 3 cycles per revolution of a squar. The maximum amplitude of the signal is 12 V

　　5、速度控制/PWM input

　　PWM輸入控制電壓范圍：0～10VDC， PWM控制信號頻率范圍:1～10 kHZ

　　Signal voltage range: 0～10VDC

　　The frequency for control signal of the fan shall be able to accept 1～10 kHZ.

　　6、保護/Protection

　　電機保護功能有堵轉(zhuǎn)保護、限流保護、低電壓與過電壓停止運轉(zhuǎn)功能

　　This motor with locked-rotor protection, current limited,under-voltage and over-voltage lockout protection