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Rev. A
2.6
CPU ( MOTOROLA/ MC68HC908JL8CSP)
The Central Process Unit
2.7
Electricity Sw itch
I t controls the + 5Vdc and + 12Vdc supplies.
+ 5Vdc and + 12Vdc Control Power Generator.
P 5Vdc (generated from 7805 regulator) and + 12Vdc power supply.
2.8
Charger:
The source for the Charger comes from the mains through the transformer and
full-bridge inverter. The charger is controlled with high frequency technology and
the acceptable charging voltage is 13.6~ 13.9V.
2.9
I nverter Circuit:
The inverter circuit is based on a full-bridge circuitry.
2.10 I nterface Circuit:
The UPS display device contains one LED (or three-LED as option) and one switch.
2.11 Batteries:
Acts as a power supply source while the UPS is on battery mode. Different types
of batteries are used for different models of UPS:
450VA: 12V4.5Ah * 1pc or equal capability
650VA: 12V7Ah * 1 pc or equal capability
850VA: 12V9Ah * 1 pc or equal capability
EMI
Filter
Main Relay
Buck Relay
Boost Relay
O/P Relay
O/P-N
O/P-L
I/P-N
I/P-L
Transformer
Inverter/Charger
Battery
Line
Sense
O/P / Load
Sense
CPU
Figure S- 1 Block Diagram
Содержание EP450 series
Страница 2: ...Page 1 of 26 Rev A UNINTERRUPTIBLE POWER SYSTEM SPECIFICATION EP450 650 850 Series ...
Страница 3: ...Page 2 of 26 Rev A 1 0 Revision Summary REVI SI ON SECTI ON DESCRI PTI ON Rev A Formal Release ...
Страница 9: ...Page 8 of 26 Rev A Figure S 2 Control Power Circuit CH1 C15 å GND Figure W 1 Cold Start ...
Страница 11: ...Page 10 of 26 Rev A Figure S 3 B Charger Control Circuit ...
Страница 15: ...Page 14 of 26 Rev A Figure S 5 I nverter circuit CH1 DS N CH2 Output Voltage 1 200V Figure W 3 Control logic 1 ...
Страница 18: ...Page 17 of 26 Rev A Figure S 6 CPU Control Circuit ...
Страница 26: ...Page 25 of 26 Rev A Figure W 7 Battery Mode Examination Flowchart ...
Страница 27: ...Page 26 of 26 Rev A Figure W 8 Line Mode Examination Flowchart ...
