PPC905AE101控制模塊,PPC905AE101使用尺寸
模塊的輸入保護(hù)足以保證在性能降低的情況下運(yùn)行高達(dá)200V共模。該模塊提供外部電氣隔離
通過(guò)使用光學(xué)隔離在現(xiàn)場(chǎng)布線和背板之間產(chǎn)生噪聲。為了將電容性負(fù)載和噪聲降至最低，模塊的所有現(xiàn)場(chǎng)連接應(yīng)使用優(yōu)質(zhì)絞合屏蔽儀表電纜接線。防護(hù)罩可以是連接到COM或GND。COM連接提供對(duì)模塊中的模擬電路。接地連接提供對(duì)基板（框架）的訪問(wèn)接地）。
PPC905AE101控制模塊當(dāng)模塊的電源工作時(shí)，面板頂部的LED亮起。主要模塊的電源是由PLC電源提供的隔離+24 VDC電源。該電壓通過(guò)逆變器/調(diào)節(jié)器傳輸，為模塊提供工作電壓。該模塊還消耗PLC電源+5 VDC輸出的電力，以驅(qū)動(dòng)隔離電路。該模塊可以安裝在90-30系列PLC系統(tǒng)。見(jiàn)第3-11頁(yè)，以確定模擬電流輸入的數(shù)量可以安裝在系統(tǒng)中的模塊為了限制共模電壓，每個(gè)電流源公共線可以如果信源是浮動(dòng)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(xì)信息，請(qǐng)參閱第2章。默認(rèn)范圍為4至20 mA，用戶數(shù)據(jù)按比例縮放，使4 mA對(duì)應(yīng)于0計(jì)數(shù)20 mA對(duì)應(yīng)32000個(gè)計(jì)數(shù)，每1000個(gè)計(jì)數(shù)代表0.5 mA。什么時(shí)候在輸入/輸出端子板上添加跳線，輸入范圍隨用戶更改為0至20 mA對(duì)數(shù)據(jù)進(jìn)行縮放，使0 mA對(duì)應(yīng)于0的計(jì)數(shù)，20 mA對(duì)應(yīng)于0的計(jì)數(shù)32000，每800個(gè)計(jì)數(shù)代表0.5 mA。隨附兩個(gè)范圍跳線單元一個(gè)用于通道1和2，另一個(gè)用于通道3和4。
Input protection for the module is sufficient to guarantee operation with reduced performance
with up to 200V common-mode. The module provides electrical isolation of externally
generated noise between field wiring and the backplane through the use of optical isolation.
To minimize the capacitive loading and noise, all field connections to the module should be
wired using a good grade of twisted, shielded instrumentation cable. The shields can be
connected to either COM or GND. The COM connection provides access to the common of the
analog circuitry in the module. The GND connection provides access to the baseplate (frame
ground).
An LED at the top of the faceplate is ON when the module’s power supply is operating. The main
power source for the module is the isolated +24 VDC power supplied by the PLC power supply.
This voltage is routed through an inverter/regulator to provide the operating voltage for the module.
This module also consumes power from the +5 VDC output of the PLC power supply to drive the
isolation circuitry. This module can be installed in any I/O slot of a 5 or 10-slot baseplate in a
Series 90-30 PLC system. See page 3-11 to determine the number of Analog Current Input
modules that can be installed in a systemIn 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 details.The default range is 4 to 20 mA with user data scaled so that 4 mA corresponds to a count of 0
and 20 mA corresponds to a count of 32000 with each 1000 counts representing 0.5 mA. When
a jumper is added to the I/O terminal board, the input range is changed to 0 to 20 mA with user
