12
Connections on PCB
The following shows the connections of connectors on the Temp. controller PCB.
Connector Connects
to
Usage
CN1
Switching power supply
To supply the power to PCB.
CN2
Network interface
To connect to MTR-480
(
option
)
CN3
Remote alarm terminal
#1: COM.
#2: N.O.
#3: N.C.
Remote alarm contact outputs.
In normal condition, open for #1-#2 and
closed for #1-#3.
CN4
#1-#2
:
Temp. control relay
#3-#4
:
Heater relay
To control internal temperature (12VDC)
To supply the power to Cap. tube heater
(12VDC)
CN5
#1-#5: Switch PCB
#6-#7: Buzzer
To connect to each switch
CN6
Display PCB
To connect to each LED
CN7
#1-#2: Door switch
#5-#6: AT sensor
#7-#8: Filter sensor
#9-#10: Cascade sensor
To control the door switch
To detect the ambient temperature
To detect the temperature in condenser outlet pipe.
To detect the temperature in cascade.
CN8
#1-#2: Battery
(
#1:6V
#2:Battery switch
)
#3-#4: Transformer
To supply the power during power failure
To supply the power to PCB.
CN9
#1-#2: H. Comp. relay
To control compressor H ON/OFF (12VDC)
CN10 Unused
CN11
#1-#3: Temp. sensor
To detect the internal temperature.
Содержание MDF-U53V
Страница 8: ...5 Dimensions ...
Страница 12: ...9 Components on PCB ...
Страница 16: ...13 㩷 Wiring Diagram 㩷 ...
Страница 17: ...14 ...
Страница 18: ...15 㩷 Circuit Diagram 㩷 ...
Страница 36: ...33 MDF U73V MDF U73VC MDF U53V MDF U53VC Ultra Low Temperature Freezer INSTRUCTION MANUAL MDF U73V MDF U73VC ...
Страница 44: ...41 8 FREEZER COMPONENTS 8 1 6 2 4 12 15 inside 14 5 3 11 9 10 7 5 inside 17 18 16 13 19 ...