ABB IPFLD24 Power supply system module

ABB IPFLD24 Power supply system module

The analog inputs are overvoltage protected. All eight channels are placed in Hold mode simultaneously. Internal counters are used for automatic scanning. You can operate multiple SCXI-1140 boards under SCXIbus control or directly from a data acquisition board. The outputs of all eight channels are available at the output connector. You can also multiplex the outputs onto a single channel. You can use SCXI-1140 switches to connect other SCXI-1140 outputs to the same channel over the analog bus. The block diagram in Figure 3-1 illustrates the key functional components of the SCXI-1140. The major components of the SCXI-1140 are the digital interface, the timing control circuitry, the track-and-hold circuitry, and the analog circuitry. The theory of operation of each of these components is explained in the remainder of this chapter.

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