20 Samsung Electronics
1) If door is open, door S/W contact is closed. Then MICOM receives “low” signal and detects
door open.
2) If door is closed, door S/W contact is open. Then MICOM receives “high” signal and detects
door close.
DOOR
F
R
Door Conditions
CLOSE
OPEN
CLOSE
OPEN
Door S/W Contact
OPEN
CLOSE
OPEN
CLOSE
MICOM
PIN NO
# 7
# 8
Micom Input Voltage
“LOW”
“HIGH”
“LOW”
“HIGH”
5. “V” Motor Position Detector(Reed S/W)
1) The position of “V” motor for controlling the G.A–fuzzy of the temperature in the
refrigeration room is detected by the reed switch.
2) When MICOM Pin 43 changes ‘high’ to ‘low’ by the operation of fan, MICOM detects the
position of “V” motor.
REED S/W
CON 02
7
6
5
Vcc
R405
4.7K
R406
10K
C403
104
43
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