DDK NFT-801RM3-S擰緊機(jī),NFT-801RM3-S電機(jī)
為了最大限度地減少電容負(fù)載和噪聲，模塊的所有現(xiàn)場(chǎng)連接應(yīng)使用良好的電纜連接絞合屏蔽儀表電纜等級(jí)。屏蔽應(yīng)連接至接地用戶端子連接器塊。接地連接提供對(duì)基板的訪問（機(jī)架接地）可更好地抑制任何屏蔽漏電流引起的噪聲。當(dāng)模塊的電源工作時(shí)，模塊面板上的LED亮起。這個(gè)模塊在現(xiàn)場(chǎng)接線和背板通過使用光學(xué)隔離。
DDK NFT-801RM3-S擰緊機(jī)該模塊可以安裝在5的任何輸入/輸出插槽中或90-30系列PLC系統(tǒng)中的10槽基板。如果用戶提供的供應(yīng)品不用于為模塊供電，最多可以在一個(gè)模塊中安裝三個(gè)模擬電流輸出模塊基板。最大輸出負(fù)載（電壓模式）5 mA（2K歐姆最小電阻）（2000 pF最大電容）磁場(chǎng)和邏輯側(cè)之間的隔離1500伏+5V電源的內(nèi)部功耗為30 mA215 mA，來自隔離的+24 VDC背板電源或用戶供應(yīng)產(chǎn)品標(biāo)準(zhǔn)和通用規(guī)范見附錄B。
1可根據(jù)圖3-38所示的總模塊電流計(jì)算電壓輸出選項(xiàng)上的允許負(fù)載。
2允許的用戶供電取決于電流負(fù)載和環(huán)境溫度，如圖3-38所示。
3在存在嚴(yán)重射頻干擾（IEC 801-3，10V/m）的情況下，精度可能會(huì)降低到μA（4至20mA）范圍），μA（0至20 mA范圍）以下兩個(gè)圖提供了將現(xiàn)場(chǎng)布線連接到模擬電路的信息電流輸出模塊。圖3-40顯示了使用輸出所需的連接作為模擬電流輸出。
To minimize thecapacitive loading and noise, all field connections to the module should be wired using a good
grade of twisted, shielded instrumentation cable. The shields should be connected to GND on
the user terminal connector block. The GND connection provides access to the baseplate
(frame ground) resulting in superior rejection of noise caused by any shield drain currents.
An LED on the module’s faceplate is ON when the module’s power supply is operating. The
module provides electrical isolation of externally generated noise between field wiring and the
backplane through use of optical isolation. This module can be installed in any I/O slot of a 5
or 10-slot baseplate in a Series 90-30 PLC system. If user provided supplies are not used to
power the module, a maximum of three Analog Current Output modules can be installed in a
baseplate.Maximum Output Loading (voltage mode) 5 mA (2K ohms minimum resistance) (2000 pF
maximum capacitance)
Isolation 1500 volts between field and logic side
Internal Power Consumption 30 mA from +5V supply
215 mA from Isolated +24 VDC backplane supply
or user supply
Refer to Appendix B for product standards and general specifications.
1 Allowable load on the voltage output option can be calculated from the total module current shown in Figure 3-38.
2 Allowable user supply is dependent on the current load and the ambient temperature as shown in Figure 3-38.
3 In the presence of severe RF interference (IEC 801-3, 10V/m), accuracy may be degraded to μA (4 to 20 mA
range), μA (0 to 20 mA range)The following two figures provide information for connecting field wiring to the Analog
Current Output module. Figure 3-40 shows the connections necessary for the outputs to be used
as analog current outputs.
