倍加福KCD2-SCD-EX1安全栅特征 •单通道 •24v直流电源(电源线) •电流输出650Ω负载 •HART I/P和阀门定位器 •断铅监测 •精确度0.1% •外壳宽度12.5毫米 •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 Supply Connection Power Rail or terminals 9+, 10- Rated voltage Un 19 ... 30 V DC Ripple ≤ 10 % Rated current In ≤ 30 mA Power loss ≤ 600 mW Power consumption ≤ 700 mW Input Connection terminals 5-, 6+ Input ** 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 terminals 1+, 2- Current 4 ... 20 mA Load 0 ... 650 Ω Voltage ≥ 13 V at 20 mA Ripple 20 mV rms