PPCC322BE控制模塊,PPCC322BE實驗數(shù)據(jù)
輸入電流范圍4至20 mA和0至20 mA校準工廠校準至每次計數(shù)4μA更新速率2毫秒（所有四個通道）4-20 mA 4μA時的分辨率（1 LSB=4μA）0-20 mA時的分辨率5μA（1 LSB=5μA）絕對精度 0.1%滿刻度+0.1%讀數(shù)共模電壓200伏線性<1最低有效位磁場側(cè)和邏輯側(cè)之間的隔離1500伏直流時共模抑制>70 db；
PPCC322BE控制模塊>60 Hz時為70 db直流至1 kHz的交叉通道抑制>80 db輸入阻抗250歐姆輸入濾波器響應(yīng)325 Hz隔離+24伏電源的內(nèi)部功耗為100 mA背板上+5伏總線25 mA產(chǎn)品標準和通用規(guī)范見附錄B。在存在嚴重射頻干擾（IEC 801-3，10V/m）的情況下，精度可能會降低到±0.5%。為了限制共模電壓，每個電流源公共線可能會如果信源是浮動的，也要綁定到其相關(guān)的COM終端。這些可選連接如上圖所示。有關(guān)接線和屏蔽接地連接的詳細信息，請參閱第2章SIC693ALG221模擬輸入模塊現(xiàn)場接線信息下圖提供了將現(xiàn)場接線連接到用戶終端板的信息在4通道模擬電流輸入模塊上。
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.
