TDK 750W HALF RACK technical manual Connecting single loads, local sensing default

3.9.7Connecting single loads, local sensing (default).

Fig.3-10 shows recommended load and sensing connections for a single load. The local sense lines shown are default connections at the rear panel J2 sense connector. Local sensing is suit- able for applications where load regulation is less critical.

+V	+
	Load

Power -V

Supply

-Rem.sense	Load lines, twisted
-Local sense
	pair, shortest length
+Local sense	possible.
+Rem.sense

Fig.3-10: Single load connection, local sensing

3.9.8Connecting single loads, remote sensing

Fig.3-11 shows recommended remote sensing connection for single loads. Remote sensing is used when, in Constant Voltage mode, the load regulation is important at the load terminals. Use twisted or shielded wires to minimize noise pick-up. If shielded wires are used, the shield should be connected to the ground at one point, either at the power supply chassis or the load ground. The optimal point for the shield ground should be determined by experimentation.

+V

Power -VSupply

-Rem.sense -Local sense +Local sense +Rem.sense

Load lines. Twisted pair shortest length possible.

+

Load

Sense lines. Twisted pair or shielded.

Fig.3-11: Remote sensing, single load

3.9.9Connecting multiple loads, radial distribution method

Fig.3-12 shows multiple loads connected to one supply. Each load should be connected to the power supply’s output terminals using separate airs of wires. It is recommended that each pair of wires will be as short as possible and twisted or shielded to minimize noise pick-up and radiation. The sense wires should be connected to the power supply output terminals or to the load with the most critical load regulation requirement.

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83-507-5002 Rev. B