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19
7
8
9
7
8
+
1
–
3
1
2
3
4
5
6
~
7
8
9
10
11
12
13
14
15
16
17
18
10
12
+
–
RTD
Current output,
DC SSR driver output
+
–
Control output 1
CN4720 Series
B
B
A
*Voltage/
Current
input
Power supply
T.C.
Alarm 1
(Upper limit alarm)
Alarm 2
(Lower limit alarm)
Heater burnout
alarm output
Common
CT input
Control output 2(on the cooling side)
Current output, DC SSR
driver output
–
+
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
3
2
1
2
1
+
–
7
5
~
12
10
+
–
A
B
B
–
+
CN4520, CN4620 Series
2
1
RTD
*Voltage/
Current
input
Current output, DC SSR
driver output
T.C.
Current output,
DC SSR driver
output
Control output 1
Power supply
Control output 2
(on the cooling side)
Alarm 1 (upper limit alarm)
Alarm 2 (lower limit alarm)
Heater burnout alarm
Common
CT input
–
+