12
Control Action
Reverse:
For heating control with a heater. The heater output is increased when the mea-
sured temperature is below the SP (i.e., a negative temperature difference).
Normal:
For cooling control of overheated objects using cooling water or some other
method. The cooling water output is increased when the measured temperature
is above the SP (i.e., a positive temperature difference).
Control Method
Selects the method of control.
2-3
Wiring
2-3-1 Input Wiring
C200H-TC00
j
Thermocouple
CT
TC
CT
TC
24 VDC
0.2 A
CT: Current Transformer
TC: Thermocouple
Heater wire
Loop 2
Loop 1
The 24-VDC output from the
C200H CPU or the Power
Supply Units is convenient.
A0
A1
A2
A3
A4
A5
A6
A7
A8
A9
Refer to the
table below.
Terminal No.
Terminal name
A0
CT
Loop 1
A1
CT
A2
TC (–)
A3
TC (+)
A4
CT
Loop 2
A5
CT
A6
TC (–)
A7
TC (+)
A8
24 VDC
A9
0 V
Wiring
Section 2-3
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