亚洲综合在线播放_久久视频免费在线_久久久黄色av_亚洲免费视频一区

倍加福KFD2-SCD2-Ex1.LK安全柵特征

?單通道

?24v直流電源(電源線(xiàn))

?電流輸出700Ω負(fù)載

?HART I/P和閥門(mén)定位器

?線(xiàn)路故障檢測(cè)(LFD)

?準(zhǔn)確度0.05%

?帶有測(cè)試插座的終端塊

?根據(jù)IEC 61508，安全等級(jí)可達(dá)SIL2

應(yīng)用

這種隔離屏障用于內(nèi)在安全應(yīng)用。它驅(qū)動(dòng)智能I/P轉(zhuǎn)換器，電動(dòng)閥門(mén)，和危險(xiǎn)區(qū)域的定位器。的模擬值上疊加數(shù)字信號(hào)現(xiàn)場(chǎng)或控制端，雙向傳輸。電流通過(guò)DC/DC轉(zhuǎn)換器被重復(fù)終端1和2。一個(gè)開(kāi)路和短路的場(chǎng)電路具有高輸入控制端阻抗允許通過(guò)檢測(cè)線(xiàn)路故障控制系統(tǒng)。如果數(shù)字通信的環(huán)路電阻太低，一個(gè)內(nèi)部之間的250Ω電阻終端8和9可用，可用作HART通信電阻。用于連接HART通信器的套接字為集成到設(shè)備的終端。一個(gè)集體錯(cuò)誤消息傳遞特性在什么時(shí)候可用與動(dòng)力軌系統(tǒng)配套使用。

技術(shù)參數(shù)

General specifications
Signal type Analog output
Supply
Connection Power Rail or terminals 14+, 15-
Rated voltage Un 20 ... 35 V DC
Ripple within the supply tolerance
Power loss 0.8 W at 20 mA into 10 V (equivalent to 500 Ω) load
Power consumption 1 W at 20 mA
Input
Connection terminals 7-, 8+, (9+)
Voltage drop approx. 4 V or internal resistance 200 Ω at 20 mA
Input resistance > 100 kΩ, when wiring resistance in the field > 16 V (equivalent to 800 Ω at 20 mA)
Current 4 ... 20 mA limited to approx. 25 mA
Output
Connection terminals 1+, 2-
Current 4 ... 20 mA
Load 100 ... 700 Ω
Voltage ≥ 14 V at 20 mA
Transfer characteristics
Deviation
After calibration at 20 °C (68 °F): ≤ 10 μA incl. non-linearity, calibration, hysteresis, supply and load changes
Influence of ambient temperature ≤ 1 μA/K
Rise time < 100 μs , 10 ... 90 % step change
Electrical isolation
Input/power supply functional insulation, rated insulation voltage 50 V AC
Directive conformity
Electromagnetic compatibility
Directive 2004/108/EC EN 61326-1:2006
Conformity
Electromagnetic compatibility NE 21:2011
Degree of protection IEC 60529:2001
Protection against electrical shock UL 61010-1:2004
Ambient conditions
Ambient temperature -20 ... 60 °C (-4 ... 140 °F)