IS200BICLH1BBA工业卡件,ABB卡件
图2-16:WYE电压互感器连接2.2.8数字输入只有9个数字输入设计用于干触点连接。两个数字输入（访问和测试）具有自己的公共端子；数字输入的其余部分共用一个公共端子（见图2-10：第2-8页的典型接线图）。此外，+24 V DC开关电源用于感应式或电容式接近探头的控制电源。NPN晶体管输出可被带到配置为计数器或转速表的可分配数字输入之一。有关+24 V直流开关电源的最大电流消耗，请参阅第1-5页第1.2节：规范。不向数字输入注入电压。仅限干触点连接。警告2-14 469电机管理继电器GE电源管理2.2电气2安装2 2.2.9模拟输入469为四个0至1mA、0至20mA或4至20mA电流输入信号（现场可编程）提供端子。该电流信号可用于监测外部量，如振动、压力或流量。四个输入共用一个公共回路。必须观察这些输入的极性，以便正确操作。模拟输入电路与模拟输出电路和RTD电路作为一组隔离。三个电路只能使用一个接地参考。相对于469安全接地，Transorbs将此隔离限制在±36 V。此外，+24V DC模拟输入电源用于回路供电传感器的控制电源。有关此电源的最大电流消耗，请参阅第1-5页第1.2节：规范。图2–17：回路供电传感器连接2.2.10模拟输出469提供4个模拟输出通道，可按要求提供0至1 mA（最大10 kΩ 阻抗）或4至20 mA（最大值为1200Ω 阻抗）。每个通道可配置为为任何测量参数的任何范围提供满量程输出灵敏度。如第2–8页图2–10：典型接线图所示，这些输出共用一个公共回路。必须观察这些输出的极性，以便正确操作。应使用屏蔽电缆，仅屏蔽一端接地，以尽量减少噪声影响。模拟输出电路与模拟输入电路和RTD电路隔离为一组。三个电路只能使用一个接地参考。相对于469安全接地，Transorbs将此隔离限制在±36 V。如果需要电压输出，则必须在SCADA测量装置的输入端连接负载电阻器。忽略输入的输入阻抗，Rload=V满量程/Imax。例如，对于0至1 mA，如果要求5 V满量程对应1 mA，则Rload=5 V/0.001 A=5000Ω. 对于4至20 mA，该电阻器的负载Rload=5 V/0.020 A=250Ω. GE Power Management 469电机管理继电器2-15 2安装2.2电气2 2.2.11 RTD传感器连接a）描述469可监测多达12个RTD输入，用于定子、轴承、环境或其他温度监测。每个RTD的类型可现场编程为100Ω 铂（DIN 43760），100Ω 镍，120Ω 镍或10Ω 铜RTD必须为三线式
Figure 2–16: WYE VOLTAGE TRANSFORMER CONNECTION 2.2.8 DIGITAL INPUTS There are 9 digital inputs designed for dry contact connections only. Two of the digital inputs (Access and Test) have their own common terminal; the balance of the digital inputs share one common terminal (see Figure 2– 10: TYPICAL WIRING DIAGRAM on page 2–8). In addition, the +24 V DC switch supply is brought out for control power of an inductive or capacitive proximity probe. The NPN transistor output could be taken to one of the assignable digital inputs configured as a counter or tachometer. Refer to Section 1.2: SPECIFICATIONS on page 1–5 for maximum current draw from the +24 V DC switch supply. DO NOT INJECT VOLTAGES TO DIGITAL INPUTS. DRY CONTACT CONNECTIONS ONLY. CAUTION 2-14 469 Motor Management Relay GE Power Management 2.2 ELECTRICAL 2 INSTALLATION 2 2.2.9 ANALOG INPUTS The 469 provides terminals for four 0 to 1mA, 0 to 20mA, or 4 to 20mA current input signals (field programmable). This current signal can be used to monitor external quantities such as vibration, pressure, or flow. The four inputs share one common return. Polarity of these inputs must be observed for proper operation The analog input circuitry is isolated as a group with the analog output circuitry and the RTD circuitry. Only one ground reference should be used for the three circuits. Transorbs limit this isolation to ±36 V with respect to the 469 safety ground. In addition, the +24 V DC analog input supply is brought out for control power of loop powered transducers. Refer to Section 1.2: SPECIFICATIONS on page 1–5 for maximum current draw from this supply. Figure 2–17: LOOP POWERED TRANSDUCER CONNECTION 2.2.10 ANALOG OUTPUTS The 469 provides 4 analog output channels which may be ordered to provide a full-scale range of either 0 to 1 mA (into a maximum 10 kΩ impedance) or 4 to 20 mA (into a maximum 1200 Ω impedance). Each channel can be configured to provide full-scale output sensitivity for any range of any measured parameter. As shown in Figure 2–10: TYPICAL WIRING DIAGRAM on page 2–8, these outputs share one common return. Polarity of these outputs must be observed for proper operation. Shielded cable should be used, with only one end of the shield grounded, to minimize noise effects. The analog output circuitry is isolated as a group with the Analog Input circuitry and the RTD circuitry. Only one ground reference should be used for the three circuits. Transorbs limit this isolation to ±36 V with respect to the 469 safety ground. If a voltage output is required, a burden resistor must be connected at the input of the SCADA measuring device. Ignoring the input impedance of the input, Rload = Vfull scale / Imax. For 0 to 1 mA, for example, if 5 V full scale is required to correspond to 1 mA, Rload = 5 V / 0.001 A = 5000 Ω. For 4 to 20 mA, this resistor would be Rload = 5 V / 0.020 A = 250 Ω. GE Power Management 469 Motor Management Relay 2-15 2 INSTALLATION 2.2 ELECTRICAL 2 2.2.11 RTD SENSOR CONNECTIONS a) DESCRIPTION The 469 monitors up to 12 RTD inputs for Stator, Bearing, Ambient, or Other temperature monitoring. The type of each RTD is field programmable as 100 Ω Platinum (DIN 43760), 100 Ω Nickel, 120 Ω Nickel, or 10 Ω Copper. RTDs must be three wire type
