TOA Electronics FPS1000-48 Basic Connections For Operation, Connecting single load, Local sensing

CHAPTER 5 BASIC CONNECTIONS FOR OPERATION

5.1 Connecting single load, Local sensing

Local sensing is suitable for applications where load regulation is not critical. Fig 5-1 shows recommended load and sensing connections for applications with a single load.

		+V	1,2,4	+
FPS1000		+S	8
				LOAD
		-S	13
SIGNAL	ON/
		-V		-
RTN	OFF		3,5,6
10	7

Fig 5-1: single load connection, local sensing

*In Local sense applications, the +/- sense have to be connected to the +/-V terminals of the FPS1000 units prior the operating the FPS1000 units

5.2 Connecting Single Load, Remote Sensing

Remote sensing is used in cases where 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 the power supply side or the load. The optimal point for the shield ground should be determined by experimentation. Refer to the power supply specifications for the maximum voltage drop allowed at the load wires.

			Load line.
		1,2,4	Up to 1V drop.
	+V		+
		8
FPS1000	+S

LOAD

		-S	13
SIGNAL	ON/		3,5,6
		-V		-
RTN	OFF
10	7		Sense lines	Load line.
			Twisted pairs	Up to 1V drop.

Fig 5-2: Remote sensing, single load.

5.3 Connecting Multiple loads, radial distribution method

In cases of multiple loads connected to one supply, each load should be connected to the power supply's output terminals using separate pairs 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.

			+V
FPS1000			+S
SIGNAL	ON/		-S
			-V
RTN	OFF
10
		7

1,2,4	+	LOAD # 1
8	-
13	+	LOAD # 2
	-
3,5,6	+
		LOAD # 3
	-

Fig 5-3: Multiple loads connection , radial distribution

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