TOA Electronics FPS1000-48, FPS1000-24, FPS-S1U Block diagram of the I2C option, Eeprom functions

Page 23

7.3 Block diagram of the I2C option

Refer to Fig 7-1 for description of the I2C block diagram and for typical application.

 

A0

Output Fail

 

OTP

 

A1

 

Temperature Alarm

 

A2

 

Fan Fail

 

REGISTER

 

AC Input Fail

 

 

 

A0

Output voltage

 

A1

Output current

 

A2

 

 

 

ADC

Temperature

A0

A0

 

A1

A1

 

A2

A2

 

 

EEPROM

 

Fig 7-1: I2C option bloack diagram

 

Serial CLOCK

 

 

Serial DATA

7.4 Operation and functions 7.4.1. Digital status

Digital status functions are provided by a PCF8574, 8-bit Register. It provides a single 8-bit word when read by the I2C controller. Fault is indicated by "1" and Good level is indicated by "0".

Refer to Table 7-1 for the register information.

 

BIT

 

FUNCTION

 

 

 

 

MEANING

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

0

 

Output Fail

 

 

 

 

Output voltage is <80% +/- 5% of Vout rated

 

 

1

 

Over Temperature Protection

 

 

Internal temperature is over 80°C. Supply turns off.

 

2

 

Temperature Alarm

 

 

Internal temperature is over 70°C. Supply is on.

 

 

3

 

Fan Fail

 

 

 

 

Failure of an internal fan.

 

 

 

 

 

4

 

AC Input Fail

 

 

 

 

AC Input <85Vac

 

 

 

 

 

5

 

Not Used

 

 

 

 

Always "0".

 

 

 

 

 

 

 

6

 

Not Used

 

 

 

 

Always "0".

 

 

 

 

 

 

 

7

 

Not Used

 

 

 

 

Always "0".

 

 

 

 

 

 

Table 7-1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

PCF8574 slave address:

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Bit

7

6

 

5

4

 

3

 

2

1

 

0

 

Value

0

1

 

0

0

 

A2

 

A1

A0

 

R/W

7.4.2 EEPROM functions

A 256 bytes EEPROM included in the I2C option. The EEPROM type is AT24C02 and it is programmed at the factory with the data shown in Table 7-2.

ADDRESS

BYTES

DATA

0

4

Number of fields

4

16

Manufacturer

20

20

Serial number

40

16

Revision

56

16

Country of manufacture

72

16

Model name

88

16

Output voltage

104

16

Date of manufacture

254

2

Checksum

Table 7-2

The slave EEPROM address is:

Bit

7

6

5

4

3

2

1

0

Value

1

0

1

0

A2

A1

A0

R/W

20

Image 23
Contents FPS Series 1000W In 1U FPS1000 Series Table of Contents Disclaimer WarrantyLimitation of Warranty Warranty ServiceFPS1000 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 Current Carrying Capacity Connecting the LoadLoad Wiring Making the load connections Noise and Impedance EffectsInductive loads Repackaging for Shipment Input/Output connector informationFunctions and Features FPS10004.7KΩ Dcok signalACFail signal Remote On/Off controlRemote Sensing Basic Connections for Operation Connecting single load, Local sensingConnecting Single Load, Remote Sensing Connecting Multiple loads, radial distribution methodGrounding outputs Multiple loads connection with distribution terminalsOutput voltage trimming at parallel operation Parallel and Series OperationParallel operation Parallel operation with Remote sensingRemote On/Off control at parallel operation Signal Return bus at parallel operationSeries connection for positive and negative output voltage Series operationI2C BUS Interface Option Eeprom functions Block diagram of the I2C optionOperation and functions 7.4.1. Digital status Output current readback Analog functions4 A/D Scaling 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 RackOutput voltage trimming Supervisory signals12.4 On/Off control Parallel operation with Remote sensing Output voltage trimming at parallel operation Signal Return bus at parallel operationRemote On/Off control at parallel operation Addressing A0, A1, A2 FPS-S1U I2C BUS Interface OptionIntroduction Adjustments and Calibration FPS-S1U MaintenanceUnits under warranty Periodic maintenanceFPS-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