TOA Electronics FPS1000-12 Parallel and Series Operation, Parallel operation with Remote sensing

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CHAPTER 13 PARALLEL AND SERIES OPERATION

13.1 Parallel operation

Up to 3 FPS-S1U racks with up to 8 FPS1000 installed units of the same output voltage rating can be connected in parallel. The built-in Oring diodes on the main output and on the +12V auxiliary voltage in each FPS1000 unit allow N+1 operation. By connecting the CS signal between the paralleled units, automatic current balance is achieved, with +/-10% accuracy. For input voltages less than 100Vac, maximum output Power derated by 10% of the Power rating. Refer to Fig 13-1 for output Power derating in parallel operation.

%of rated Power

100

90

			Input voltage
		265	Input voltage
85	100	265	(Vrms)

Fig 13-1: Output Power derating at parallel operation

13.1.1 Parallel operation with Remote sensing

Fig13-2 shows typical connection of parallel operation with Remote sensing. The CS signal wires should be as short aspossible and with the same length.

FPS-S1U #1				+V			+S
FPS-S1U #1				+S			+S
				+S
		ON/ ON/		ON/	-S		-S
	SIG. OFF OFF OFF				-V		-S
CS RTN		A	B	C	-V
9	11	5	15	25			+S
FPS-S1U #2				+V		+S	+V
FPS-S1U #2				+S		+S
				+S			LOAD
		ON/ ON/ ON/			-S		LOAD
		ON/ ON/ ON/			-S	-S
	SIG. OFF OFF OFF				-V	-S	-V
CS RTN		A	B	C	-V		-V
9	11	5	15	25
							-S
FPS-S1U #3				+V		+S
FPS-S1U #3				+S		+S
				+S
		ON/ ON/		ON/	-S	-S
	SIG. OFF OFF OFF				-V	-S
CS RTN		A	B	C	-V

9 11

5 15 25

Fig 13-2: Parallel operation with Remote sensing

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Contents FPS Series 1000W In 1U FPS1000 Series Table of Contents Limitation of Warranty WarrantyWarranty Service DisclaimerFPS1000 Power Supply and FPS-S1U Rack Safety Instructions Safety Symbols FPS1000 Series Specifications Outline Drawings FPS 1000 Series Outline Drawings FPS 1000/P Series Outline Drawings FPS1000 Power Supply Installation Load Wiring Connecting the LoadCurrent Carrying Capacity Inductive loads Noise and Impedance EffectsMaking the load connections Repackaging for Shipment Input/Output connector informationFunctions and Features ACFail signal Dcok signalRemote On/Off control FPS10004.7KΩRemote Sensing Connecting Single Load, Remote Sensing Connecting single load, Local sensingConnecting Multiple loads, radial distribution method Basic Connections for OperationGrounding outputs Multiple loads connection with distribution terminalsParallel operation Parallel and Series OperationParallel operation with Remote sensing Output voltage trimming at parallel operationRemote On/Off control at parallel operation Signal Return bus at parallel operationSeries connection for positive and negative output voltage Series operationI2C BUS Interface Option Operation and functions 7.4.1. Digital status Block diagram of the I2C optionEeprom functions 4 A/D Scaling Analog functionsOutput current readback FPS1000 Typical application diagramFPS1000 Maintenance FPS-S1U 19 Rack Single Output Maximum output power Chapter FPS-S1U Rack SpecificationsFPS-S1U Rack Mounting FPS-S1U Rack InstallationRear panel description Control and monitoring signals connectorSCL I2C Blank panels Modules locationFPS-S1U and FPS-S1U/P Outline Drawings FPS-S1U/P Outline Drawing Multiple loads connection Basic Connections for Operation FPS-S1U Rack12.4 On/Off control Supervisory signalsOutput voltage trimming Parallel operation with Remote sensing Output voltage trimming at parallel operation Signal Return bus at parallel operationRemote On/Off control at parallel operation Introduction FPS-S1U I2C BUS Interface OptionAddressing A0, A1, A2 Units under warranty FPS-S1U MaintenancePeriodic maintenance Adjustments and CalibrationFPS-T1U 19 Rack Triple Output Chapter FPS-T1U Rack SpecificationsFPS-T1U Rack Mounting FPS-T1U Rack InstallationFPS-T1U Rear panel J1A, J2B, J3C Conector Description Modules location FPS-T1U and FPS-T1U/P Outline Drawings FPS-T1U/P Outline Drawing 19.2 On/Off control Basic Connections for Operation FPS-T1U RackOutput Voltag Trimming Load Series operation Module a Module B Module C FPS-T1U I2C BUS Interface OptionFPS-T1U Maintenance