倍加福KCD2-SCD-1信号隔离器

特征

•1通道信号隔离器

•24v直流电源(导轨供电)

•电流输出650Ω负载

•HART I/P和阀门定位器

•精确度0.1%

•外壳宽度12.5毫米

•根据IEC 61508，安全等级可达最多SIL

应用

这种信号调节器驱动智能I/P转换器，电动阀门和定位器，并提供隔离non-intrinsically安全应用程序。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。一个开路电路对所述控制端允许通过控制进行断铅监测系统。

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6和8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。

技术参数

General specifications
Signal type Analog output
Functional safety related parameters
Safety Integrity Level (SIL) SIL 2
Supply
Connection Power Rail or terminals 9+, 10-
Rated voltage Ur 19 30 V DC
Ripple ≤ 10 %
Rated current Ir ≤ 30 mA
Power dissipation ≤ 600 mW
Power consumption ≤ 700 mW
Input
Connection side control side
Connection terminals 5-, 6+
Input signal 4 20 mA limited to approx. 30 mA
Input voltage depending on switch configuration
open loop voltage of the control system < 23 V
open loop voltage of the control system < 27 V
Voltage drop depending on switch configuration
open loop voltage of the control system < 23 V: approx. 6 V at 20 mA
open loop voltage of the control system < 27 V: approx. 10 V at 20 mA
Input resistance > 100 kΩ, with field wiring open
Output
Connection side field side
Connection terminals 1+, 2-
Current 4 20 mA
Load 0 650 Ω
Voltage ≥ 13 V at 20 mA
Ripple 20 mV rms
Transfer characteristics
Accuracy 0.1 %
Deviation at 20 °C (68 °F), 0/4 20 mA
≤ ± 0.1 % incl. non-linearity and hysteresis
Influence of ambient temperature < 2 μA/K (0 60 °C (32 140 °F)); < 4 μA/K (-20 0 °C (-4 32 °F))
Frequency range bandwidth at 0.5 Vss signal 0 3 kHz (-3 dB)
Rise time 10 to 90 % ≤ 100 ms