TOA Electronics FPS1000-12, FPS1000-24, FPS1000-32, FPS-S1U, FPS-T1U Typical application diagram

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7.5.3 Internal temperature measurement

The internal ambient temperature is measured to provide information of the safe operation of the power supply. The internal ambient temperature is usually higher than the power supply air intake temperature due to internal power dissipation. As the power dissipation varies with the load, the internal ambient temperature increases with the load. Refer to Fig 7-2 for typical internal temperature rise above the air intake temperature versus the load.

Internal temp. rise (°C)

15

10

5

0

25

50

75

100 % of rated load

Fig 7-2: Internal temperature rise vs. load

Internal temperature calculation example:

1.Hex readback: 68 (0110 1000).

2.Convert hex readback to decimal: 104

3.Calculate the measured temperature:

Temp=104*0.391=40.664oC

7.6 Typical application diagram

A typical application is described in Fig 7-3.

PC

RS232

RS232

CABLE

RS232 TO

I2C

CONVERTOR

			ON/OFF
			CONTROL
CLOCK	SIGNAL	ON/OFF		+S
CLOCK	RETURN			+V
SCL				+V
DATA	FPS1000
SDA
				-V
GND	A0	A1	A2	-S
				-S

				ADDRESS
				SETTING

+

LOAD

-

Fig 7-3: Typical application of I2C interface

22

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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