2 FUNCTION DESCRIPTION
1) ELECTRIC CIRCUITS
9
VA1
A14821
7
Note: B type has been only appliated to europe area.
11
VA1
B
14821
9
TRANS secondary side is composed of electric power circuits for RELAY driving electricity (12Vdc) and for supplying electricity to MICOM
and IC (5Vdc). The voltage in each part is as follows.
PARTS both ends of VA1 both ends of both ends of CE1 both ends of CE2 both ends of CC2
transformer
VOLTAGE 230Vac 14Vac 17Vdc 12Vdc 5Vdc
VA1 is the part to protect over voltage and noise. When more than 385V is applied, the thermal-fuse(130C cut-off, local
option) in a first part of TRANS is cut so that the elements in the secondary side of TRANS are protected.
2) OSCILLATION CIRCUIT
CIRCUIT for occurring CLOCK which motivates the internal local element of IC1 to transmit and receive an information and BASIC TIME
for calculating time. Use a proper form for OSC 1. Because in case that SPECIFICATION is changed, the calculated time in IC1 is
changed or IC1 isn't able to operate.
3) RESET CIRCUIT
KIA7042
All the internal parts of MICOM(IC1) return to the initial condition when the early power ON or apply power again in MICOM after
temporary power failure. As a result, all the functions operate according to the early condition. At the early period of power ON the "LOW"
voltage is applied in the RESET terminal of MICOM for the fixed time. The RESET terminal is 5V during the general operation.
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ACEC
LG-GOLDSTAR
