PPCC322BE控制模块,PPCC322BE实验数据
输入电流范围4至20 mA和0至20 mA校准工厂校准至每次计数4µA更新速率2毫秒（所有四个通道）4-20 mA 4µA时的分辨率（1 LSB=4µA）0-20 mA时的分辨率5µA（1 LSB=5µA）绝对精度 0.1%满刻度+0.1%读数共模电压200伏线性<1最低有效位磁场侧和逻辑侧之间的隔离1500伏直流时共模抑制>70 db；
PPCC322BE控制模块>60 Hz时为70 db直流至1 kHz的交叉通道抑制>80 db输入阻抗250欧姆输入滤波器响应325 Hz隔离+24伏电源的内部功耗为100 mA背板上+5伏总线25 mA产品标准和通用规范见附录B。在存在严重射频干扰（IEC 801-3，10V/m）的情况下，精度可能会降低到±0.5%。为了限制共模电压，每个电流源公共线可能会如果信源是浮动的，也要绑定到其相关的COM终端。这些可选连接如上图所示。有关接线和屏蔽接地连接的详细信息，请参阅第2章SIC693ALG221模拟输入模块现场接线信息下图提供了将现场接线连接到用户终端板的信息在4通道模拟电流输入模块上。
Input Current Ranges 4 to 20 mA and 0 to 20 mA
Calibration Factory calibrated to 4 µA per count
Update Rate 2 msec (all four channels)
Resolution at 4-20 mA 4 µA (1 LSB = 4 µA)
Resolution at 0-20 mA 5 µA (1 LSB = 5 µA)
Absolute Accuracy 0.1% full scale + 0.1% reading
Common Mode Voltage 200 volts
Linearity < 1 Least Significant Bit
Isolation 1500 volts between field side and logic side
Common Mode Rejection > 70 db at DC; >70 db at 60 Hz
Cross-Channel Rejection > 80 db from DC to 1 kHz
Input Impedance 250 ohms
Input Filter Response 325 Hz
Internal Power Consumption 100 mA from the isolated +24 volt supply
25 mA from+5 volt bus on the backplane
Refer to Appendix B for product standards and general specifications.
In the presence of severe RF interference (IEC 801-3, 10V/m), accuracy may be degraded to ±0.5% FSIn order to limit common-mode voltages, each current source common line may
also be tied to its associated COM terminal if the source is floating. These
optional connections are shown in the figure above.
Please refer to Chapter 2 for wiring and shield ground connection detailsIC693ALG221 Analog Input Module Field Wiring Information
The following figure provides information for connecting field wiring to the user terminal board
on the 4-Channel Analog Current Input Module.
