Page 16 of 26
Rev. A
8 Microprocessor( CPU) Control Circuit
The CPU is supplied by + 5Vdc power supply to pin7 with ground pin at pin3. An
extra oscillation circuitry consisting of C01, C02, and crystal XL1 is connected to pin4 &5.
The Vesta series is using MOTOROLA/ MC68HC908JL8CSP CPU. The pin definition is listed
below(Figure S-6):
PI N
FUNCTI ON
Pin1 N/ A
Pin2 SW
Pin3 ground
Pin4 oscillation
circuit
Pin5 oscillation
circuit
Pin6
main relay control
Pin7 Power
source
Pin8
series detect (GREEN FUNTI ON)
Pin9 CHG.ON
Pin10 O/ P-V
detection
Pin11
I nput line detection
Pin12 Load
detection
Pin13 RXD
Pin14
TXD
Pin15 Shutdown
Pin16 Buzzer
control
Pin17
Battery voltage detection
Pin18
I nverter PWM signal (CPU.M3)
Pin19
I nverter PWM signal (CPU.M2)
Pin20
I nverter PWM signal (CPU.M4)
Pin21
I nverter PWM signal (CPU.M1)
Pin22 VA
detect
Pin23 Series
detect
Pin24 LED1
control
Pin25 LED2
control
Pin26 LED3
control
Pin27 ZERO-CRO
control
Pin28 Buck
relay
control
Pin29 Boost
relay
control
Pin30 Reset
control
Pin31 O-P
Relay
Pin32 Voltage
detect
Summary of Contents for EP450 series
Page 2: ...Page 1 of 26 Rev A UNINTERRUPTIBLE POWER SYSTEM SPECIFICATION EP450 650 850 Series ...
Page 9: ...Page 8 of 26 Rev A Figure S 2 Control Power Circuit CH1 C15 å GND Figure W 1 Cold Start ...
Page 11: ...Page 10 of 26 Rev A Figure S 3 B Charger Control Circuit ...
Page 18: ...Page 17 of 26 Rev A Figure S 6 CPU Control Circuit ...
Page 26: ...Page 25 of 26 Rev A Figure W 7 Battery Mode Examination Flowchart ...
Page 27: ...Page 26 of 26 Rev A Figure W 8 Line Mode Examination Flowchart ...