8
Connections on PCB
Connectors on Temp. control PCB
Connector Connects to Usage
CN1
Switching power supply
䋤1 +12VDC
䋤3 GND
To supply the power to PCB
CN2
MTR-480䋨Option䋩
CN3
Remote alarm terminal
䋤1 COM
䋤2 N.C.
(When power is not supplied)
䋤3 N.O.
(When power is not supplied)
Output for remote alarm contact
䊶㩷Open between #1 and #2 when the
power is supplied in normal condition.
䊶㩷#1 and #2 are connected with remote
alarm terminal.
CN4
Temp. control relay
#1: +12V
(When temp. control relay is ON)
#2: GND
To turn temp. control relay on/off
CN5 Display PCB (CN51) To connect with each of switches
CN6 Display PCB (CN52) To connect with each of LED
CN7
Temp. sensor
#9 - #10 Temp. sensor
To sense chamber temperature
CN8
Battery䋨6V䋩
To connect with battery for power failure
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