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Power supply Our industrial computer runs on DC but the site only has 220 VAC. Should we use the supplied adapter or a DIN-rail power supply? Both work; choose by where the machine sits.
External adapter (brick type): fine for desks, clean control rooms and trial machines. The downsides: it is easy t… Power supply During the rainy season, an outdoor station has had LAN and COM ports burn out several times after lightning. How do we protect it… Lightning rarely strikes the machine itself. Ports burn out from induced surges travelling along long cables: network cable, RS-485 lines and power cables enter… Power supply When choosing a DIN-rail 24 VDC power supply for an industrial computer, how many watts is enough? Add up everything that draws power through the machine, then add headroom.
1. Maximum machine power: from the datasheet, often given as maximum current at a gi… Power supply The plant loses power suddenly and a few times Windows failed to boot afterwards. Is there anything short of buying a large UPS? A cabinet-wide UPS is one option, but industrial computers usually allow something smaller and cheaper.
A DIN-rail 24 V buffer: a battery or supercapacitor mod… Power supply Our cabinet only has 24 VDC. The machine is rated 9–36 VDC — can we wire it directly, or do we need a separate power supply? You can wire it directly; 24 V sits in the middle of the range. But check four things first.
1. Inrush current. At switch-on the machine draws a peak several t…