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UPS Display with PC Interface

 The microcontroller based UPS Display unit samples one of the 8 parameters of the UPS (input voltage, output voltage, battery voltage, input current, output current, battery current, input frequency and output frequency) every 200 msec. All the parameters can be viewed on the alphanumeric LCD display one after another using keys. The parameter values on display are updated every 1 sec. The same will be also transmitted to PC every 1 sec. through serial port. Battery low information will be sent immediately on detection. The unit also features real time clock. The display unit along with PC shut down software can be used for automatic monitoring of UPS and shut down of the PCs on power failure.

Specifications/Features   


Input Parameters

Range

Input to be provided to the unit

Resolution for display

Input Voltage

0-255Vac

0-5Vdc

1V

Output Voltage

0-255Vac

0-5Vdc

1V

Input Current

0-64A

0-5Vdc   (CT o/p)

1A

Output Current

0-64A

0-5Vdc   (CT o/p)

1A

DC Current (Charging and Discharging)

0-128A

0-75mV (Shunt o/p)

1A

DC Voltage

0-128V

0-5V

1V

Input Frequency

45-55Hz

From i/p voltage

1 Hz

Output Frequency

45-55Hz

From o/p voltage

1 Hz

Outputs:

  • 16x2 line LCD Display

  • RS 232 PC Interface           

  • Built-in RTC

  • Date & Time Display

  • Soft touch keys (3 nos.) to set date & Time and to scroll the data display