ABB IMRIO02远程I/o模块
品牌：ABB
型号：ABB IMRIO02
产品说明：远程I/o模块
ABB IMRIO02远程I/o模块中文资料：
ABB IMRIO02远程I/o模块直流电源连接将25 VDC（标称）电源的+和-导线连接到端子接头上的顶部两个端子。这些连接对AC/DC输入电源的极性不敏感。（但是，本章稍后将讨论的仅直流输入型电源对极性敏感。）输入过电压保护装置此信息适用于除IC693PWR322和IC693PWR 328之外的所有90-30系列电源。ABB IMRIO02该电源的过电压保护装置内部连接到用户接线板上的引脚4。该针脚通常通过出厂时安装的跨接导线与机架接地（针脚3）相连。如果不需要过电压保护或在上游提供过电压保护，则可以通过从引脚3和4上拆下跨接带来禁用此功能。如果要对该电源进行高压测试，则必须在测试期间通过拆下端子板跨接带禁用过电压保护。测试后，通过重新安装跳线带重新启用过电压保护。跳线带将过电压保护装置连接到接线板上的框架接地螺钉端子ABB IMRIO02
英文资料
DC Power Source Connections Connect the + and - wires from the 25 VDC (nominal) power source to the top two terminals on the terminal connector. These connections are not polarity-sensitive on an AC/DC input power supply. (However, the DC Input-only type supplies, which are discussed later in this chapter, are polarity sensitive.) Input Overvoltage Protection Devices This information applies to all Series 90-30 power supplies except IC693PWR322 and IC693PWR328. The overvoltage protection devices for this power supply are connected internally to pin 4 on the user terminal strip. This pin is normally connected to frame ground (pin 3) with the supplied jumper strap which is installed at the factory. If overvoltage protection is not required or is supplied upstream, this feature can be disabled by removing the jumper strap from pins 3 and 4.If you want to Hi-pot test this supply, overvoltage protection must be disabled during the test by removing the terminal strip jumper strap. Re-enable overvoltage protection after testing by reinstalling the strap.Jumper Strap Connects Overvoltage Protection Devices to Frame Ground Screw Terminals on Terminal BoardABB IMRIO02
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