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MICOM FUNCTION AND CIRCUIT DIAGRAM
6-2. Circuit Diagram
6-2-1. Power Supply Diagram
Power supply diagram consists of a noise reduction part and a SIMPS(Switching Mode Power Supply), a rectifying part (BD1, CE1)
(from AC to DC), a switching part (IC3) for switching the DC voltage, TRANS for delivering the energy from Switch 1 to #2, Switch #2
for supplying power to MICOM and IC, and a FEED BACK(IC4) for sending a feedback to TRANS in order to maintain a consistent
voltage at #2.
There may be high voltage electricity (DC310V) on the power supply. Please wait more than 3 minutes after you unplug
Caution
the power in order to prevent an electric shock.
6-2-2. Oscillation Circuit
Synchronizing CLOCK generation for transmitting and receiving information of IC1 (MICOM) inner logic devices, and time generation
for time calculation. If specifications of OSC1 are modified, it may alter its calculation time or may cause a malfunction. Please use
regular parts.
6-2-3. RESET Circuit
When MICOM is powering up from an initial power-on or from a power outrage recovery, the reset circuit initialize several parts inside
of the MICOM (C1), including the RAM. In the early stage of the power-up process, the MICOM RESET terminal is supplied with a
'LOW' voltage for a certain period of time (10mins). (normal voltage for RESET terminal is 5.3V)
(MICOM does not operate with a defected RESET IC)
CC13
2
R31
1
R1
IC3
1
3
KIA7042AP
CC104
2
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27
28
(VAREF)
14
(VASS)
3
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