倍加福KFD2-SCD2-Ex1.LK安全栅特征

•单通道

•24v直流电源(电源线)

•电流输出700Ω负载

•HART I/P和阀门定位器

•线路故障检测(LFD)

•准确度0.05%

•带有测试插座的终端块

•根据IEC 61508，安全等级可达SIL2

应用

这种隔离屏障用于内在安全应用。它驱动智能I/P转换器，电动阀门，和危险区域的定位器。的模拟值上叠加数字信号现场或控制端，双向传输。电流通过DC/DC转换器被重复终端1和2。一个开路和短路的场电路具有高输入控制端阻抗允许通过检测线路故障控制系统。如果数字通信的环路电阻太低，一个内部之间的250Ω电阻终端8和9可用，可用作HART通信电阻。用于连接HART通信器的套接字为集成到设备的终端。一个集体错误消息传递特性在什么时候可用与动力轨系统配套使用。

技术参数

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
bbbbb
Connection terminals 7-, 8+, (9+)
Voltage drop approx. 4 V or internal resistance 200 Ω at 20 mA
bbbbb 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
bbbbb/power supply functional insulation, rated insulation voltage 50 V AC
Directive conbbbbity
Electromagnetic compatibility
Directive 2004/108/EC EN 61326-1:2006
Conbbbbity
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)